Add serial checkRx in stepper ISR. Copied HardwareSerial to MarlinSerial (Needed for checkRx).master
Erik van der Zalm
14 years ago
parent
aad4b75b94
commit
f75f426dfa
@ -0,0 +1,213 @@
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/*
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HardwareSerial.cpp - Hardware serial library for Wiring
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Copyright (c) 2006 Nicholas Zambetti. All right reserved.
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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Modified 23 November 2006 by David A. Mellis
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Modified 28 September 2010 by Mark Sproul
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*/
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <inttypes.h>
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#include "wiring.h"
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#include "wiring_private.h"
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// this next line disables the entire HardwareSerial.cpp,
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// this is so I can support Attiny series and any other chip without a uart
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#if defined(UBRRH) || defined(UBRR0H) || defined(UBRR1H) || defined(UBRR2H) || defined(UBRR3H)
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#include "MarlinSerial.h"
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// Define constants and variables for buffering incoming serial data. We're
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// using a ring buffer (I think), in which rx_buffer_head is the index of the
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// location to which to write the next incoming character and rx_buffer_tail
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// is the index of the location from which to read.
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#define RX_BUFFER_SIZE 128
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struct ring_buffer
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{
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unsigned char buffer[RX_BUFFER_SIZE];
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int head;
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int tail;
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};
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#if defined(UBRRH) || defined(UBRR0H)
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ring_buffer rx_buffer = { { 0 }, 0, 0 };
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#endif
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inline void store_char(unsigned char c, ring_buffer *rx_buffer)
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{
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int i = (unsigned int)(rx_buffer->head + 1) % RX_BUFFER_SIZE;
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// if we should be storing the received character into the location
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// just before the tail (meaning that the head would advance to the
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// current location of the tail), we're about to overflow the buffer
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// and so we don't write the character or advance the head.
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if (i != rx_buffer->tail) {
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rx_buffer->buffer[rx_buffer->head] = c;
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rx_buffer->head = i;
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}
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}
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//#elif defined(SIG_USART_RECV)
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#if defined(USART0_RX_vect)
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// fixed by Mark Sproul this is on the 644/644p
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//SIGNAL(SIG_USART_RECV)
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SIGNAL(USART0_RX_vect)
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{
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#if defined(UDR0)
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unsigned char c = UDR0;
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#elif defined(UDR)
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unsigned char c = UDR; // atmega8, atmega32
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#else
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#error UDR not defined
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#endif
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store_char(c, &rx_buffer);
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}
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#endif
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// Constructors ////////////////////////////////////////////////////////////////
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MarlinSerial::MarlinSerial(ring_buffer *rx_buffer,
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volatile uint8_t *ubrrh, volatile uint8_t *ubrrl,
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volatile uint8_t *ucsra, volatile uint8_t *ucsrb,
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volatile uint8_t *udr,
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uint8_t rxen, uint8_t txen, uint8_t rxcie, uint8_t udre, uint8_t u2x)
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{
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_rx_buffer = rx_buffer;
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_ubrrh = ubrrh;
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_ubrrl = ubrrl;
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_ucsra = ucsra;
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_ucsrb = ucsrb;
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_udr = udr;
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_rxen = rxen;
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_txen = txen;
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_rxcie = rxcie;
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_udre = udre;
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_u2x = u2x;
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}
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// Public Methods //////////////////////////////////////////////////////////////
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void MarlinSerial::begin(long baud)
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{
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uint16_t baud_setting;
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bool use_u2x = true;
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#if F_CPU == 16000000UL
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// hardcoded exception for compatibility with the bootloader shipped
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// with the Duemilanove and previous boards and the firmware on the 8U2
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// on the Uno and Mega 2560.
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if (baud == 57600) {
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use_u2x = false;
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}
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#endif
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if (use_u2x) {
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*_ucsra = 1 << _u2x;
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baud_setting = (F_CPU / 4 / baud - 1) / 2;
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} else {
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*_ucsra = 0;
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baud_setting = (F_CPU / 8 / baud - 1) / 2;
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}
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// assign the baud_setting, a.k.a. ubbr (USART Baud Rate Register)
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*_ubrrh = baud_setting >> 8;
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*_ubrrl = baud_setting;
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sbi(*_ucsrb, _rxen);
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sbi(*_ucsrb, _txen);
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sbi(*_ucsrb, _rxcie);
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}
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void MarlinSerial::end()
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{
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cbi(*_ucsrb, _rxen);
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cbi(*_ucsrb, _txen);
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cbi(*_ucsrb, _rxcie);
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}
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int MarlinSerial::available(void)
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{
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return (unsigned int)(RX_BUFFER_SIZE + _rx_buffer->head - _rx_buffer->tail) % RX_BUFFER_SIZE;
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}
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int MarlinSerial::peek(void)
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{
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if (_rx_buffer->head == _rx_buffer->tail) {
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return -1;
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} else {
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return _rx_buffer->buffer[_rx_buffer->tail];
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}
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}
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int MarlinSerial::read(void)
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{
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// if the head isn't ahead of the tail, we don't have any characters
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if (_rx_buffer->head == _rx_buffer->tail) {
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return -1;
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} else {
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unsigned char c = _rx_buffer->buffer[_rx_buffer->tail];
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_rx_buffer->tail = (unsigned int)(_rx_buffer->tail + 1) % RX_BUFFER_SIZE;
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return c;
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}
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}
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void MarlinSerial::flush()
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{
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// don't reverse this or there may be problems if the RX interrupt
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// occurs after reading the value of rx_buffer_head but before writing
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// the value to rx_buffer_tail; the previous value of rx_buffer_head
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// may be written to rx_buffer_tail, making it appear as if the buffer
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// don't reverse this or there may be problems if the RX interrupt
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// occurs after reading the value of rx_buffer_head but before writing
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// the value to rx_buffer_tail; the previous value of rx_buffer_head
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// may be written to rx_buffer_tail, making it appear as if the buffer
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// were full, not empty.
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_rx_buffer->head = _rx_buffer->tail;
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}
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void MarlinSerial::write(uint8_t c)
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{
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while (!((*_ucsra) & (1 << _udre)))
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;
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*_udr = c;
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}
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void MarlinSerial::checkRx()
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{
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if((UCSR0A & (1<<RXC0)) != 0) {
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unsigned char c = UDR0;
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store_char(c, &rx_buffer);
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}
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}
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// Preinstantiate Objects //////////////////////////////////////////////////////
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#if defined(UBRR0H) && defined(UBRR0L)
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MarlinSerial MSerial(&rx_buffer, &UBRR0H, &UBRR0L, &UCSR0A, &UCSR0B, &UDR0, RXEN0, TXEN0, RXCIE0, UDRE0, U2X0);
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#else
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#error no serial port defined (port 0)
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#endif
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#endif // whole file
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@ -0,0 +1,66 @@
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/*
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HardwareSerial.h - Hardware serial library for Wiring
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Copyright (c) 2006 Nicholas Zambetti. All right reserved.
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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Modified 28 September 2010 by Mark Sproul
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*/
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#ifndef MarlinSerial_h
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#define MarlinSerial_h
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#include <inttypes.h>
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#include "Stream.h"
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struct ring_buffer;
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class MarlinSerial : public Stream
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{
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private:
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ring_buffer *_rx_buffer;
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volatile uint8_t *_ubrrh;
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volatile uint8_t *_ubrrl;
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volatile uint8_t *_ucsra;
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volatile uint8_t *_ucsrb;
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volatile uint8_t *_udr;
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uint8_t _rxen;
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uint8_t _txen;
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uint8_t _rxcie;
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uint8_t _udre;
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uint8_t _u2x;
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public:
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MarlinSerial(ring_buffer *rx_buffer,
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volatile uint8_t *ubrrh, volatile uint8_t *ubrrl,
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volatile uint8_t *ucsra, volatile uint8_t *ucsrb,
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volatile uint8_t *udr,
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uint8_t rxen, uint8_t txen, uint8_t rxcie, uint8_t udre, uint8_t u2x);
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void begin(long);
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void end();
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virtual int available(void);
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virtual int peek(void);
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virtual int read(void);
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virtual void flush(void);
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virtual void write(uint8_t);
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virtual void checkRx(void);
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using Print::write; // pull in write(str) and write(buf, size) from Print
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};
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#if defined(UBRRH) || defined(UBRR0H)
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extern MarlinSerial MSerial;
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#endif
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#endif
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@ -1,642 +1,643 @@
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/* Arduino Sd2Card Library
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* Copyright (C) 2009 by William Greiman
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*
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* This file is part of the Arduino Sd2Card Library
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*
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* This Library is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This Library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with the Arduino Sd2Card Library. If not, see
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* <http://www.gnu.org/licenses/>.
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*/
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#if ARDUINO < 100
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#include <WProgram.h>
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#else // ARDUINO
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#include <Arduino.h>
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#endif // ARDUINO
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#include "Sd2Card.h"
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//------------------------------------------------------------------------------
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#ifndef SOFTWARE_SPI
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// functions for hardware SPI
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//------------------------------------------------------------------------------
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// make sure SPCR rate is in expected bits
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#if (SPR0 != 0 || SPR1 != 1)
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#error unexpected SPCR bits
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#endif
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/**
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* Initialize hardware SPI
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* Set SCK rate to F_CPU/pow(2, 1 + spiRate) for spiRate [0,6]
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*/
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static void spiInit(uint8_t spiRate) {
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// See avr processor documentation
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SPCR = (1 << SPE) | (1 << MSTR) | (spiRate >> 1);
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SPSR = spiRate & 1 || spiRate == 6 ? 0 : 1 << SPI2X;
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}
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//------------------------------------------------------------------------------
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/** SPI receive a byte */
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static uint8_t spiRec() {
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SPDR = 0XFF;
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while (!(SPSR & (1 << SPIF)));
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return SPDR;
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}
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//------------------------------------------------------------------------------
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/** SPI read data - only one call so force inline */
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static inline __attribute__((always_inline))
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void spiRead(uint8_t* buf, uint16_t nbyte) {
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if (nbyte-- == 0) return;
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SPDR = 0XFF;
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for (uint16_t i = 0; i < nbyte; i++) {
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while (!(SPSR & (1 << SPIF)));
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buf[i] = SPDR;
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SPDR = 0XFF;
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}
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while (!(SPSR & (1 << SPIF)));
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buf[nbyte] = SPDR;
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}
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//------------------------------------------------------------------------------
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/** SPI send a byte */
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static void spiSend(uint8_t b) {
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SPDR = b;
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while (!(SPSR & (1 << SPIF)));
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}
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//------------------------------------------------------------------------------
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/** SPI send block - only one call so force inline */
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static inline __attribute__((always_inline))
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void spiSendBlock(uint8_t token, const uint8_t* buf) {
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SPDR = token;
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for (uint16_t i = 0; i < 512; i += 2) {
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while (!(SPSR & (1 << SPIF)));
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SPDR = buf[i];
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while (!(SPSR & (1 << SPIF)));
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SPDR = buf[i + 1];
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}
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while (!(SPSR & (1 << SPIF)));
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}
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//------------------------------------------------------------------------------
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#else // SOFTWARE_SPI
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//------------------------------------------------------------------------------
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/** nop to tune soft SPI timing */
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#define nop asm volatile ("nop\n\t")
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//------------------------------------------------------------------------------
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/** Soft SPI receive byte */
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static uint8_t spiRec() {
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uint8_t data = 0;
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// no interrupts during byte receive - about 8 us
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cli();
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// output pin high - like sending 0XFF
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fastDigitalWrite(SPI_MOSI_PIN, HIGH);
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for (uint8_t i = 0; i < 8; i++) {
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fastDigitalWrite(SPI_SCK_PIN, HIGH);
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// adjust so SCK is nice
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nop;
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nop;
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data <<= 1;
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if (fastDigitalRead(SPI_MISO_PIN)) data |= 1;
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fastDigitalWrite(SPI_SCK_PIN, LOW);
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}
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// enable interrupts
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sei();
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return data;
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}
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//------------------------------------------------------------------------------
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/** Soft SPI read data */
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static void spiRead(uint8_t* buf, uint16_t nbyte) {
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for (uint16_t i = 0; i < nbyte; i++) {
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buf[i] = spiRec();
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}
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}
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//------------------------------------------------------------------------------
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/** Soft SPI send byte */
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static void spiSend(uint8_t data) {
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// no interrupts during byte send - about 8 us
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cli();
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for (uint8_t i = 0; i < 8; i++) {
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fastDigitalWrite(SPI_SCK_PIN, LOW);
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fastDigitalWrite(SPI_MOSI_PIN, data & 0X80);
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data <<= 1;
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fastDigitalWrite(SPI_SCK_PIN, HIGH);
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}
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// hold SCK high for a few ns
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nop;
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nop;
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nop;
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nop;
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fastDigitalWrite(SPI_SCK_PIN, LOW);
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// enable interrupts
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sei();
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}
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//------------------------------------------------------------------------------
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/** Soft SPI send block */
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void spiSendBlock(uint8_t token, const uint8_t* buf) {
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spiSend(token);
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for (uint16_t i = 0; i < 512; i++) {
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spiSend(buf[i]);
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}
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}
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#endif // SOFTWARE_SPI
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//------------------------------------------------------------------------------
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// send command and return error code. Return zero for OK
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uint8_t Sd2Card::cardCommand(uint8_t cmd, uint32_t arg) {
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// select card
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chipSelectLow();
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// wait up to 300 ms if busy
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waitNotBusy(300);
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// send command
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spiSend(cmd | 0x40);
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// send argument
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for (int8_t s = 24; s >= 0; s -= 8) spiSend(arg >> s);
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// send CRC
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uint8_t crc = 0XFF;
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if (cmd == CMD0) crc = 0X95; // correct crc for CMD0 with arg 0
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if (cmd == CMD8) crc = 0X87; // correct crc for CMD8 with arg 0X1AA
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spiSend(crc);
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// skip stuff byte for stop read
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if (cmd == CMD12) spiRec();
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// wait for response
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for (uint8_t i = 0; ((status_ = spiRec()) & 0X80) && i != 0XFF; i++);
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return status_;
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}
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//------------------------------------------------------------------------------
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/**
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* Determine the size of an SD flash memory card.
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*
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* \return The number of 512 byte data blocks in the card
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* or zero if an error occurs.
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*/
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uint32_t Sd2Card::cardSize() {
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csd_t csd;
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if (!readCSD(&csd)) return 0;
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if (csd.v1.csd_ver == 0) {
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uint8_t read_bl_len = csd.v1.read_bl_len;
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uint16_t c_size = (csd.v1.c_size_high << 10)
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| (csd.v1.c_size_mid << 2) | csd.v1.c_size_low;
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uint8_t c_size_mult = (csd.v1.c_size_mult_high << 1)
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| csd.v1.c_size_mult_low;
|
||||
return (uint32_t)(c_size + 1) << (c_size_mult + read_bl_len - 7);
|
||||
} else if (csd.v2.csd_ver == 1) {
|
||||
uint32_t c_size = ((uint32_t)csd.v2.c_size_high << 16)
|
||||
| (csd.v2.c_size_mid << 8) | csd.v2.c_size_low;
|
||||
return (c_size + 1) << 10;
|
||||
} else {
|
||||
error(SD_CARD_ERROR_BAD_CSD);
|
||||
return 0;
|
||||
}
|
||||
}
|
||||
//------------------------------------------------------------------------------
|
||||
void Sd2Card::chipSelectHigh() {
|
||||
digitalWrite(chipSelectPin_, HIGH);
|
||||
}
|
||||
//------------------------------------------------------------------------------
|
||||
void Sd2Card::chipSelectLow() {
|
||||
#ifndef SOFTWARE_SPI
|
||||
spiInit(spiRate_);
|
||||
#endif // SOFTWARE_SPI
|
||||
digitalWrite(chipSelectPin_, LOW);
|
||||
}
|
||||
//------------------------------------------------------------------------------
|
||||
/** Erase a range of blocks.
|
||||
*
|
||||
* \param[in] firstBlock The address of the first block in the range.
|
||||
* \param[in] lastBlock The address of the last block in the range.
|
||||
*
|
||||
* \note This function requests the SD card to do a flash erase for a
|
||||
* range of blocks. The data on the card after an erase operation is
|
||||
* either 0 or 1, depends on the card vendor. The card must support
|
||||
* single block erase.
|
||||
*
|
||||
* \return The value one, true, is returned for success and
|
||||
* the value zero, false, is returned for failure.
|
||||
*/
|
||||
bool Sd2Card::erase(uint32_t firstBlock, uint32_t lastBlock) {
|
||||
csd_t csd;
|
||||
if (!readCSD(&csd)) goto fail;
|
||||
// check for single block erase
|
||||
if (!csd.v1.erase_blk_en) {
|
||||
// erase size mask
|
||||
uint8_t m = (csd.v1.sector_size_high << 1) | csd.v1.sector_size_low;
|
||||
if ((firstBlock & m) != 0 || ((lastBlock + 1) & m) != 0) {
|
||||
// error card can't erase specified area
|
||||
error(SD_CARD_ERROR_ERASE_SINGLE_BLOCK);
|
||||
goto fail;
|
||||
}
|
||||
}
|
||||
if (type_ != SD_CARD_TYPE_SDHC) {
|
||||
firstBlock <<= 9;
|
||||
lastBlock <<= 9;
|
||||
}
|
||||
if (cardCommand(CMD32, firstBlock)
|
||||
|| cardCommand(CMD33, lastBlock)
|
||||
|| cardCommand(CMD38, 0)) {
|
||||
error(SD_CARD_ERROR_ERASE);
|
||||
goto fail;
|
||||
}
|
||||
if (!waitNotBusy(SD_ERASE_TIMEOUT)) {
|
||||
error(SD_CARD_ERROR_ERASE_TIMEOUT);
|
||||
goto fail;
|
||||
}
|
||||
chipSelectHigh();
|
||||
return true;
|
||||
|
||||
fail:
|
||||
chipSelectHigh();
|
||||
return false;
|
||||
}
|
||||
//------------------------------------------------------------------------------
|
||||
/** Determine if card supports single block erase.
|
||||
*
|
||||
* \return The value one, true, is returned if single block erase is supported.
|
||||
* The value zero, false, is returned if single block erase is not supported.
|
||||
*/
|
||||
bool Sd2Card::eraseSingleBlockEnable() {
|
||||
csd_t csd;
|
||||
return readCSD(&csd) ? csd.v1.erase_blk_en : false;
|
||||
}
|
||||
//------------------------------------------------------------------------------
|
||||
/**
|
||||
* Initialize an SD flash memory card.
|
||||
*
|
||||
* \param[in] sckRateID SPI clock rate selector. See setSckRate().
|
||||
* \param[in] chipSelectPin SD chip select pin number.
|
||||
*
|
||||
* \return The value one, true, is returned for success and
|
||||
* the value zero, false, is returned for failure. The reason for failure
|
||||
* can be determined by calling errorCode() and errorData().
|
||||
*/
|
||||
bool Sd2Card::init(uint8_t sckRateID, uint8_t chipSelectPin) {
|
||||
errorCode_ = type_ = 0;
|
||||
chipSelectPin_ = chipSelectPin;
|
||||
// 16-bit init start time allows over a minute
|
||||
uint16_t t0 = (uint16_t)millis();
|
||||
uint32_t arg;
|
||||
|
||||
// set pin modes
|
||||
pinMode(chipSelectPin_, OUTPUT);
|
||||
chipSelectHigh();
|
||||
pinMode(SPI_MISO_PIN, INPUT);
|
||||
pinMode(SPI_MOSI_PIN, OUTPUT);
|
||||
pinMode(SPI_SCK_PIN, OUTPUT);
|
||||
|
||||
#ifndef SOFTWARE_SPI
|
||||
// SS must be in output mode even it is not chip select
|
||||
pinMode(SS_PIN, OUTPUT);
|
||||
// set SS high - may be chip select for another SPI device
|
||||
#if SET_SPI_SS_HIGH
|
||||
digitalWrite(SS_PIN, HIGH);
|
||||
#endif // SET_SPI_SS_HIGH
|
||||
// set SCK rate for initialization commands
|
||||
spiRate_ = SPI_SD_INIT_RATE;
|
||||
spiInit(spiRate_);
|
||||
#endif // SOFTWARE_SPI
|
||||
|
||||
// must supply min of 74 clock cycles with CS high.
|
||||
for (uint8_t i = 0; i < 10; i++) spiSend(0XFF);
|
||||
|
||||
// command to go idle in SPI mode
|
||||
while ((status_ = cardCommand(CMD0, 0)) != R1_IDLE_STATE) {
|
||||
if (((uint16_t)millis() - t0) > SD_INIT_TIMEOUT) {
|
||||
error(SD_CARD_ERROR_CMD0);
|
||||
goto fail;
|
||||
}
|
||||
}
|
||||
// check SD version
|
||||
if ((cardCommand(CMD8, 0x1AA) & R1_ILLEGAL_COMMAND)) {
|
||||
type(SD_CARD_TYPE_SD1);
|
||||
} else {
|
||||
// only need last byte of r7 response
|
||||
for (uint8_t i = 0; i < 4; i++) status_ = spiRec();
|
||||
if (status_ != 0XAA) {
|
||||
error(SD_CARD_ERROR_CMD8);
|
||||
goto fail;
|
||||
}
|
||||
type(SD_CARD_TYPE_SD2);
|
||||
}
|
||||
// initialize card and send host supports SDHC if SD2
|
||||
arg = type() == SD_CARD_TYPE_SD2 ? 0X40000000 : 0;
|
||||
|
||||
while ((status_ = cardAcmd(ACMD41, arg)) != R1_READY_STATE) {
|
||||
// check for timeout
|
||||
if (((uint16_t)millis() - t0) > SD_INIT_TIMEOUT) {
|
||||
error(SD_CARD_ERROR_ACMD41);
|
||||
goto fail;
|
||||
}
|
||||
}
|
||||
// if SD2 read OCR register to check for SDHC card
|
||||
if (type() == SD_CARD_TYPE_SD2) {
|
||||
if (cardCommand(CMD58, 0)) {
|
||||
error(SD_CARD_ERROR_CMD58);
|
||||
goto fail;
|
||||
}
|
||||
if ((spiRec() & 0XC0) == 0XC0) type(SD_CARD_TYPE_SDHC);
|
||||
// discard rest of ocr - contains allowed voltage range
|
||||
for (uint8_t i = 0; i < 3; i++) spiRec();
|
||||
}
|
||||
chipSelectHigh();
|
||||
|
||||
#ifndef SOFTWARE_SPI
|
||||
return setSckRate(sckRateID);
|
||||
#else // SOFTWARE_SPI
|
||||
return true;
|
||||
#endif // SOFTWARE_SPI
|
||||
|
||||
fail:
|
||||
chipSelectHigh();
|
||||
return false;
|
||||
}
|
||||
//------------------------------------------------------------------------------
|
||||
/**
|
||||
* Read a 512 byte block from an SD card.
|
||||
*
|
||||
* \param[in] blockNumber Logical block to be read.
|
||||
* \param[out] dst Pointer to the location that will receive the data.
|
||||
|
||||
* \return The value one, true, is returned for success and
|
||||
* the value zero, false, is returned for failure.
|
||||
*/
|
||||
bool Sd2Card::readBlock(uint32_t blockNumber, uint8_t* dst) {
|
||||
// use address if not SDHC card
|
||||
if (type()!= SD_CARD_TYPE_SDHC) blockNumber <<= 9;
|
||||
if (cardCommand(CMD17, blockNumber)) {
|
||||
error(SD_CARD_ERROR_CMD17);
|
||||
goto fail;
|
||||
}
|
||||
return readData(dst, 512);
|
||||
|
||||
fail:
|
||||
chipSelectHigh();
|
||||
return false;
|
||||
}
|
||||
//------------------------------------------------------------------------------
|
||||
/** Read one data block in a multiple block read sequence
|
||||
*
|
||||
* \param[in] dst Pointer to the location for the data to be read.
|
||||
*
|
||||
* \return The value one, true, is returned for success and
|
||||
* the value zero, false, is returned for failure.
|
||||
*/
|
||||
bool Sd2Card::readData(uint8_t *dst) {
|
||||
chipSelectLow();
|
||||
return readData(dst, 512);
|
||||
}
|
||||
//------------------------------------------------------------------------------
|
||||
bool Sd2Card::readData(uint8_t* dst, uint16_t count) {
|
||||
// wait for start block token
|
||||
uint16_t t0 = millis();
|
||||
while ((status_ = spiRec()) == 0XFF) {
|
||||
if (((uint16_t)millis() - t0) > SD_READ_TIMEOUT) {
|
||||
error(SD_CARD_ERROR_READ_TIMEOUT);
|
||||
goto fail;
|
||||
}
|
||||
}
|
||||
if (status_ != DATA_START_BLOCK) {
|
||||
error(SD_CARD_ERROR_READ);
|
||||
goto fail;
|
||||
}
|
||||
// transfer data
|
||||
spiRead(dst, count);
|
||||
|
||||
// discard CRC
|
||||
spiRec();
|
||||
spiRec();
|
||||
chipSelectHigh();
|
||||
return true;
|
||||
|
||||
fail:
|
||||
chipSelectHigh();
|
||||
return false;
|
||||
}
|
||||
//------------------------------------------------------------------------------
|
||||
/** read CID or CSR register */
|
||||
bool Sd2Card::readRegister(uint8_t cmd, void* buf) {
|
||||
uint8_t* dst = reinterpret_cast<uint8_t*>(buf);
|
||||
if (cardCommand(cmd, 0)) {
|
||||
error(SD_CARD_ERROR_READ_REG);
|
||||
goto fail;
|
||||
}
|
||||
return readData(dst, 16);
|
||||
|
||||
fail:
|
||||
chipSelectHigh();
|
||||
return false;
|
||||
}
|
||||
//------------------------------------------------------------------------------
|
||||
/** Start a read multiple blocks sequence.
|
||||
*
|
||||
* \param[in] blockNumber Address of first block in sequence.
|
||||
*
|
||||
* \note This function is used with readData() and readStop() for optimized
|
||||
* multiple block reads. SPI chipSelect must be low for the entire sequence.
|
||||
*
|
||||
* \return The value one, true, is returned for success and
|
||||
* the value zero, false, is returned for failure.
|
||||
*/
|
||||
bool Sd2Card::readStart(uint32_t blockNumber) {
|
||||
if (type()!= SD_CARD_TYPE_SDHC) blockNumber <<= 9;
|
||||
if (cardCommand(CMD18, blockNumber)) {
|
||||
error(SD_CARD_ERROR_CMD18);
|
||||
goto fail;
|
||||
}
|
||||
chipSelectHigh();
|
||||
return true;
|
||||
|
||||
fail:
|
||||
chipSelectHigh();
|
||||
return false;
|
||||
}
|
||||
//------------------------------------------------------------------------------
|
||||
/** End a read multiple blocks sequence.
|
||||
*
|
||||
* \return The value one, true, is returned for success and
|
||||
* the value zero, false, is returned for failure.
|
||||
*/
|
||||
bool Sd2Card::readStop() {
|
||||
chipSelectLow();
|
||||
if (cardCommand(CMD12, 0)) {
|
||||
error(SD_CARD_ERROR_CMD12);
|
||||
goto fail;
|
||||
}
|
||||
chipSelectHigh();
|
||||
return true;
|
||||
|
||||
fail:
|
||||
chipSelectHigh();
|
||||
return false;
|
||||
}
|
||||
//------------------------------------------------------------------------------
|
||||
/**
|
||||
* Set the SPI clock rate.
|
||||
*
|
||||
* \param[in] sckRateID A value in the range [0, 6].
|
||||
*
|
||||
* The SPI clock will be set to F_CPU/pow(2, 1 + sckRateID). The maximum
|
||||
* SPI rate is F_CPU/2 for \a sckRateID = 0 and the minimum rate is F_CPU/128
|
||||
* for \a scsRateID = 6.
|
||||
*
|
||||
* \return The value one, true, is returned for success and the value zero,
|
||||
* false, is returned for an invalid value of \a sckRateID.
|
||||
*/
|
||||
bool Sd2Card::setSckRate(uint8_t sckRateID) {
|
||||
if (sckRateID > 6) {
|
||||
error(SD_CARD_ERROR_SCK_RATE);
|
||||
return false;
|
||||
}
|
||||
spiRate_ = sckRateID;
|
||||
return true;
|
||||
}
|
||||
//------------------------------------------------------------------------------
|
||||
// wait for card to go not busy
|
||||
bool Sd2Card::waitNotBusy(uint16_t timeoutMillis) {
|
||||
uint16_t t0 = millis();
|
||||
while (spiRec() != 0XFF) {
|
||||
if (((uint16_t)millis() - t0) >= timeoutMillis) goto fail;
|
||||
}
|
||||
return true;
|
||||
|
||||
fail:
|
||||
return false;
|
||||
}
|
||||
//------------------------------------------------------------------------------
|
||||
/**
|
||||
* Writes a 512 byte block to an SD card.
|
||||
*
|
||||
* \param[in] blockNumber Logical block to be written.
|
||||
* \param[in] src Pointer to the location of the data to be written.
|
||||
* \return The value one, true, is returned for success and
|
||||
* the value zero, false, is returned for failure.
|
||||
*/
|
||||
bool Sd2Card::writeBlock(uint32_t blockNumber, const uint8_t* src) {
|
||||
// use address if not SDHC card
|
||||
if (type() != SD_CARD_TYPE_SDHC) blockNumber <<= 9;
|
||||
if (cardCommand(CMD24, blockNumber)) {
|
||||
error(SD_CARD_ERROR_CMD24);
|
||||
goto fail;
|
||||
}
|
||||
if (!writeData(DATA_START_BLOCK, src)) goto fail;
|
||||
|
||||
// wait for flash programming to complete
|
||||
if (!waitNotBusy(SD_WRITE_TIMEOUT)) {
|
||||
error(SD_CARD_ERROR_WRITE_TIMEOUT);
|
||||
goto fail;
|
||||
}
|
||||
// response is r2 so get and check two bytes for nonzero
|
||||
if (cardCommand(CMD13, 0) || spiRec()) {
|
||||
error(SD_CARD_ERROR_WRITE_PROGRAMMING);
|
||||
goto fail;
|
||||
}
|
||||
chipSelectHigh();
|
||||
return true;
|
||||
|
||||
fail:
|
||||
chipSelectHigh();
|
||||
return false;
|
||||
}
|
||||
//------------------------------------------------------------------------------
|
||||
/** Write one data block in a multiple block write sequence
|
||||
* \param[in] src Pointer to the location of the data to be written.
|
||||
* \return The value one, true, is returned for success and
|
||||
* the value zero, false, is returned for failure.
|
||||
*/
|
||||
bool Sd2Card::writeData(const uint8_t* src) {
|
||||
chipSelectLow();
|
||||
// wait for previous write to finish
|
||||
if (!waitNotBusy(SD_WRITE_TIMEOUT)) goto fail;
|
||||
if (!writeData(WRITE_MULTIPLE_TOKEN, src)) goto fail;
|
||||
chipSelectHigh();
|
||||
return true;
|
||||
|
||||
fail:
|
||||
error(SD_CARD_ERROR_WRITE_MULTIPLE);
|
||||
chipSelectHigh();
|
||||
return false;
|
||||
}
|
||||
//------------------------------------------------------------------------------
|
||||
// send one block of data for write block or write multiple blocks
|
||||
bool Sd2Card::writeData(uint8_t token, const uint8_t* src) {
|
||||
spiSendBlock(token, src);
|
||||
|
||||
spiSend(0xff); // dummy crc
|
||||
spiSend(0xff); // dummy crc
|
||||
|
||||
status_ = spiRec();
|
||||
if ((status_ & DATA_RES_MASK) != DATA_RES_ACCEPTED) {
|
||||
error(SD_CARD_ERROR_WRITE);
|
||||
goto fail;
|
||||
}
|
||||
return true;
|
||||
|
||||
fail:
|
||||
chipSelectHigh();
|
||||
return false;
|
||||
}
|
||||
//------------------------------------------------------------------------------
|
||||
/** Start a write multiple blocks sequence.
|
||||
*
|
||||
* \param[in] blockNumber Address of first block in sequence.
|
||||
* \param[in] eraseCount The number of blocks to be pre-erased.
|
||||
*
|
||||
* \note This function is used with writeData() and writeStop()
|
||||
* for optimized multiple block writes.
|
||||
*
|
||||
* \return The value one, true, is returned for success and
|
||||
* the value zero, false, is returned for failure.
|
||||
*/
|
||||
bool Sd2Card::writeStart(uint32_t blockNumber, uint32_t eraseCount) {
|
||||
// send pre-erase count
|
||||
if (cardAcmd(ACMD23, eraseCount)) {
|
||||
error(SD_CARD_ERROR_ACMD23);
|
||||
goto fail;
|
||||
}
|
||||
// use address if not SDHC card
|
||||
if (type() != SD_CARD_TYPE_SDHC) blockNumber <<= 9;
|
||||
if (cardCommand(CMD25, blockNumber)) {
|
||||
error(SD_CARD_ERROR_CMD25);
|
||||
goto fail;
|
||||
}
|
||||
chipSelectHigh();
|
||||
return true;
|
||||
|
||||
fail:
|
||||
chipSelectHigh();
|
||||
return false;
|
||||
}
|
||||
//------------------------------------------------------------------------------
|
||||
/** End a write multiple blocks sequence.
|
||||
*
|
||||
* \return The value one, true, is returned for success and
|
||||
* the value zero, false, is returned for failure.
|
||||
*/
|
||||
bool Sd2Card::writeStop() {
|
||||
chipSelectLow();
|
||||
if (!waitNotBusy(SD_WRITE_TIMEOUT)) goto fail;
|
||||
spiSend(STOP_TRAN_TOKEN);
|
||||
if (!waitNotBusy(SD_WRITE_TIMEOUT)) goto fail;
|
||||
chipSelectHigh();
|
||||
return true;
|
||||
|
||||
fail:
|
||||
error(SD_CARD_ERROR_STOP_TRAN);
|
||||
chipSelectHigh();
|
||||
return false;
|
||||
/* Arduino Sd2Card Library
|
||||
* Copyright (C) 2009 by William Greiman
|
||||
*
|
||||
* This file is part of the Arduino Sd2Card Library
|
||||
*
|
||||
* This Library is free software: you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation, either version 3 of the License, or
|
||||
* (at your option) any later version.
|
||||
*
|
||||
* This Library is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with the Arduino Sd2Card Library. If not, see
|
||||
* <http://www.gnu.org/licenses/>.
|
||||
*/
|
||||
#if ARDUINO < 100
|
||||
#define HardwareSerial_h // trick to disable the standard HWserial
|
||||
#include <WProgram.h>
|
||||
#else // ARDUINO
|
||||
#include <Arduino.h>
|
||||
#endif // ARDUINO
|
||||
#include "Sd2Card.h"
|
||||
//------------------------------------------------------------------------------
|
||||
#ifndef SOFTWARE_SPI
|
||||
// functions for hardware SPI
|
||||
//------------------------------------------------------------------------------
|
||||
// make sure SPCR rate is in expected bits
|
||||
#if (SPR0 != 0 || SPR1 != 1)
|
||||
#error unexpected SPCR bits
|
||||
#endif
|
||||
/**
|
||||
* Initialize hardware SPI
|
||||
* Set SCK rate to F_CPU/pow(2, 1 + spiRate) for spiRate [0,6]
|
||||
*/
|
||||
static void spiInit(uint8_t spiRate) {
|
||||
// See avr processor documentation
|
||||
SPCR = (1 << SPE) | (1 << MSTR) | (spiRate >> 1);
|
||||
SPSR = spiRate & 1 || spiRate == 6 ? 0 : 1 << SPI2X;
|
||||
}
|
||||
//------------------------------------------------------------------------------
|
||||
/** SPI receive a byte */
|
||||
static uint8_t spiRec() {
|
||||
SPDR = 0XFF;
|
||||
while (!(SPSR & (1 << SPIF)));
|
||||
return SPDR;
|
||||
}
|
||||
//------------------------------------------------------------------------------
|
||||
/** SPI read data - only one call so force inline */
|
||||
static inline __attribute__((always_inline))
|
||||
void spiRead(uint8_t* buf, uint16_t nbyte) {
|
||||
if (nbyte-- == 0) return;
|
||||
SPDR = 0XFF;
|
||||
for (uint16_t i = 0; i < nbyte; i++) {
|
||||
while (!(SPSR & (1 << SPIF)));
|
||||
buf[i] = SPDR;
|
||||
SPDR = 0XFF;
|
||||
}
|
||||
while (!(SPSR & (1 << SPIF)));
|
||||
buf[nbyte] = SPDR;
|
||||
}
|
||||
//------------------------------------------------------------------------------
|
||||
/** SPI send a byte */
|
||||
static void spiSend(uint8_t b) {
|
||||
SPDR = b;
|
||||
while (!(SPSR & (1 << SPIF)));
|
||||
}
|
||||
//------------------------------------------------------------------------------
|
||||
/** SPI send block - only one call so force inline */
|
||||
static inline __attribute__((always_inline))
|
||||
void spiSendBlock(uint8_t token, const uint8_t* buf) {
|
||||
SPDR = token;
|
||||
for (uint16_t i = 0; i < 512; i += 2) {
|
||||
while (!(SPSR & (1 << SPIF)));
|
||||
SPDR = buf[i];
|
||||
while (!(SPSR & (1 << SPIF)));
|
||||
SPDR = buf[i + 1];
|
||||
}
|
||||
while (!(SPSR & (1 << SPIF)));
|
||||
}
|
||||
//------------------------------------------------------------------------------
|
||||
#else // SOFTWARE_SPI
|
||||
//------------------------------------------------------------------------------
|
||||
/** nop to tune soft SPI timing */
|
||||
#define nop asm volatile ("nop\n\t")
|
||||
//------------------------------------------------------------------------------
|
||||
/** Soft SPI receive byte */
|
||||
static uint8_t spiRec() {
|
||||
uint8_t data = 0;
|
||||
// no interrupts during byte receive - about 8 us
|
||||
cli();
|
||||
// output pin high - like sending 0XFF
|
||||
fastDigitalWrite(SPI_MOSI_PIN, HIGH);
|
||||
|
||||
for (uint8_t i = 0; i < 8; i++) {
|
||||
fastDigitalWrite(SPI_SCK_PIN, HIGH);
|
||||
|
||||
// adjust so SCK is nice
|
||||
nop;
|
||||
nop;
|
||||
|
||||
data <<= 1;
|
||||
|
||||
if (fastDigitalRead(SPI_MISO_PIN)) data |= 1;
|
||||
|
||||
fastDigitalWrite(SPI_SCK_PIN, LOW);
|
||||
}
|
||||
// enable interrupts
|
||||
sei();
|
||||
return data;
|
||||
}
|
||||
//------------------------------------------------------------------------------
|
||||
/** Soft SPI read data */
|
||||
static void spiRead(uint8_t* buf, uint16_t nbyte) {
|
||||
for (uint16_t i = 0; i < nbyte; i++) {
|
||||
buf[i] = spiRec();
|
||||
}
|
||||
}
|
||||
//------------------------------------------------------------------------------
|
||||
/** Soft SPI send byte */
|
||||
static void spiSend(uint8_t data) {
|
||||
// no interrupts during byte send - about 8 us
|
||||
cli();
|
||||
for (uint8_t i = 0; i < 8; i++) {
|
||||
fastDigitalWrite(SPI_SCK_PIN, LOW);
|
||||
|
||||
fastDigitalWrite(SPI_MOSI_PIN, data & 0X80);
|
||||
|
||||
data <<= 1;
|
||||
|
||||
fastDigitalWrite(SPI_SCK_PIN, HIGH);
|
||||
}
|
||||
// hold SCK high for a few ns
|
||||
nop;
|
||||
nop;
|
||||
nop;
|
||||
nop;
|
||||
|
||||
fastDigitalWrite(SPI_SCK_PIN, LOW);
|
||||
// enable interrupts
|
||||
sei();
|
||||
}
|
||||
//------------------------------------------------------------------------------
|
||||
/** Soft SPI send block */
|
||||
void spiSendBlock(uint8_t token, const uint8_t* buf) {
|
||||
spiSend(token);
|
||||
for (uint16_t i = 0; i < 512; i++) {
|
||||
spiSend(buf[i]);
|
||||
}
|
||||
}
|
||||
#endif // SOFTWARE_SPI
|
||||
//------------------------------------------------------------------------------
|
||||
// send command and return error code. Return zero for OK
|
||||
uint8_t Sd2Card::cardCommand(uint8_t cmd, uint32_t arg) {
|
||||
// select card
|
||||
chipSelectLow();
|
||||
|
||||
// wait up to 300 ms if busy
|
||||
waitNotBusy(300);
|
||||
|
||||
// send command
|
||||
spiSend(cmd | 0x40);
|
||||
|
||||
// send argument
|
||||
for (int8_t s = 24; s >= 0; s -= 8) spiSend(arg >> s);
|
||||
|
||||
// send CRC
|
||||
uint8_t crc = 0XFF;
|
||||
if (cmd == CMD0) crc = 0X95; // correct crc for CMD0 with arg 0
|
||||
if (cmd == CMD8) crc = 0X87; // correct crc for CMD8 with arg 0X1AA
|
||||
spiSend(crc);
|
||||
|
||||
// skip stuff byte for stop read
|
||||
if (cmd == CMD12) spiRec();
|
||||
|
||||
// wait for response
|
||||
for (uint8_t i = 0; ((status_ = spiRec()) & 0X80) && i != 0XFF; i++);
|
||||
return status_;
|
||||
}
|
||||
//------------------------------------------------------------------------------
|
||||
/**
|
||||
* Determine the size of an SD flash memory card.
|
||||
*
|
||||
* \return The number of 512 byte data blocks in the card
|
||||
* or zero if an error occurs.
|
||||
*/
|
||||
uint32_t Sd2Card::cardSize() {
|
||||
csd_t csd;
|
||||
if (!readCSD(&csd)) return 0;
|
||||
if (csd.v1.csd_ver == 0) {
|
||||
uint8_t read_bl_len = csd.v1.read_bl_len;
|
||||
uint16_t c_size = (csd.v1.c_size_high << 10)
|
||||
| (csd.v1.c_size_mid << 2) | csd.v1.c_size_low;
|
||||
uint8_t c_size_mult = (csd.v1.c_size_mult_high << 1)
|
||||
| csd.v1.c_size_mult_low;
|
||||
return (uint32_t)(c_size + 1) << (c_size_mult + read_bl_len - 7);
|
||||
} else if (csd.v2.csd_ver == 1) {
|
||||
uint32_t c_size = ((uint32_t)csd.v2.c_size_high << 16)
|
||||
| (csd.v2.c_size_mid << 8) | csd.v2.c_size_low;
|
||||
return (c_size + 1) << 10;
|
||||
} else {
|
||||
error(SD_CARD_ERROR_BAD_CSD);
|
||||
return 0;
|
||||
}
|
||||
}
|
||||
//------------------------------------------------------------------------------
|
||||
void Sd2Card::chipSelectHigh() {
|
||||
digitalWrite(chipSelectPin_, HIGH);
|
||||
}
|
||||
//------------------------------------------------------------------------------
|
||||
void Sd2Card::chipSelectLow() {
|
||||
#ifndef SOFTWARE_SPI
|
||||
spiInit(spiRate_);
|
||||
#endif // SOFTWARE_SPI
|
||||
digitalWrite(chipSelectPin_, LOW);
|
||||
}
|
||||
//------------------------------------------------------------------------------
|
||||
/** Erase a range of blocks.
|
||||
*
|
||||
* \param[in] firstBlock The address of the first block in the range.
|
||||
* \param[in] lastBlock The address of the last block in the range.
|
||||
*
|
||||
* \note This function requests the SD card to do a flash erase for a
|
||||
* range of blocks. The data on the card after an erase operation is
|
||||
* either 0 or 1, depends on the card vendor. The card must support
|
||||
* single block erase.
|
||||
*
|
||||
* \return The value one, true, is returned for success and
|
||||
* the value zero, false, is returned for failure.
|
||||
*/
|
||||
bool Sd2Card::erase(uint32_t firstBlock, uint32_t lastBlock) {
|
||||
csd_t csd;
|
||||
if (!readCSD(&csd)) goto fail;
|
||||
// check for single block erase
|
||||
if (!csd.v1.erase_blk_en) {
|
||||
// erase size mask
|
||||
uint8_t m = (csd.v1.sector_size_high << 1) | csd.v1.sector_size_low;
|
||||
if ((firstBlock & m) != 0 || ((lastBlock + 1) & m) != 0) {
|
||||
// error card can't erase specified area
|
||||
error(SD_CARD_ERROR_ERASE_SINGLE_BLOCK);
|
||||
goto fail;
|
||||
}
|
||||
}
|
||||
if (type_ != SD_CARD_TYPE_SDHC) {
|
||||
firstBlock <<= 9;
|
||||
lastBlock <<= 9;
|
||||
}
|
||||
if (cardCommand(CMD32, firstBlock)
|
||||
|| cardCommand(CMD33, lastBlock)
|
||||
|| cardCommand(CMD38, 0)) {
|
||||
error(SD_CARD_ERROR_ERASE);
|
||||
goto fail;
|
||||
}
|
||||
if (!waitNotBusy(SD_ERASE_TIMEOUT)) {
|
||||
error(SD_CARD_ERROR_ERASE_TIMEOUT);
|
||||
goto fail;
|
||||
}
|
||||
chipSelectHigh();
|
||||
return true;
|
||||
|
||||
fail:
|
||||
chipSelectHigh();
|
||||
return false;
|
||||
}
|
||||
//------------------------------------------------------------------------------
|
||||
/** Determine if card supports single block erase.
|
||||
*
|
||||
* \return The value one, true, is returned if single block erase is supported.
|
||||
* The value zero, false, is returned if single block erase is not supported.
|
||||
*/
|
||||
bool Sd2Card::eraseSingleBlockEnable() {
|
||||
csd_t csd;
|
||||
return readCSD(&csd) ? csd.v1.erase_blk_en : false;
|
||||
}
|
||||
//------------------------------------------------------------------------------
|
||||
/**
|
||||
* Initialize an SD flash memory card.
|
||||
*
|
||||
* \param[in] sckRateID SPI clock rate selector. See setSckRate().
|
||||
* \param[in] chipSelectPin SD chip select pin number.
|
||||
*
|
||||
* \return The value one, true, is returned for success and
|
||||
* the value zero, false, is returned for failure. The reason for failure
|
||||
* can be determined by calling errorCode() and errorData().
|
||||
*/
|
||||
bool Sd2Card::init(uint8_t sckRateID, uint8_t chipSelectPin) {
|
||||
errorCode_ = type_ = 0;
|
||||
chipSelectPin_ = chipSelectPin;
|
||||
// 16-bit init start time allows over a minute
|
||||
uint16_t t0 = (uint16_t)millis();
|
||||
uint32_t arg;
|
||||
|
||||
// set pin modes
|
||||
pinMode(chipSelectPin_, OUTPUT);
|
||||
chipSelectHigh();
|
||||
pinMode(SPI_MISO_PIN, INPUT);
|
||||
pinMode(SPI_MOSI_PIN, OUTPUT);
|
||||
pinMode(SPI_SCK_PIN, OUTPUT);
|
||||
|
||||
#ifndef SOFTWARE_SPI
|
||||
// SS must be in output mode even it is not chip select
|
||||
pinMode(SS_PIN, OUTPUT);
|
||||
// set SS high - may be chip select for another SPI device
|
||||
#if SET_SPI_SS_HIGH
|
||||
digitalWrite(SS_PIN, HIGH);
|
||||
#endif // SET_SPI_SS_HIGH
|
||||
// set SCK rate for initialization commands
|
||||
spiRate_ = SPI_SD_INIT_RATE;
|
||||
spiInit(spiRate_);
|
||||
#endif // SOFTWARE_SPI
|
||||
|
||||
// must supply min of 74 clock cycles with CS high.
|
||||
for (uint8_t i = 0; i < 10; i++) spiSend(0XFF);
|
||||
|
||||
// command to go idle in SPI mode
|
||||
while ((status_ = cardCommand(CMD0, 0)) != R1_IDLE_STATE) {
|
||||
if (((uint16_t)millis() - t0) > SD_INIT_TIMEOUT) {
|
||||
error(SD_CARD_ERROR_CMD0);
|
||||
goto fail;
|
||||
}
|
||||
}
|
||||
// check SD version
|
||||
if ((cardCommand(CMD8, 0x1AA) & R1_ILLEGAL_COMMAND)) {
|
||||
type(SD_CARD_TYPE_SD1);
|
||||
} else {
|
||||
// only need last byte of r7 response
|
||||
for (uint8_t i = 0; i < 4; i++) status_ = spiRec();
|
||||
if (status_ != 0XAA) {
|
||||
error(SD_CARD_ERROR_CMD8);
|
||||
goto fail;
|
||||
}
|
||||
type(SD_CARD_TYPE_SD2);
|
||||
}
|
||||
// initialize card and send host supports SDHC if SD2
|
||||
arg = type() == SD_CARD_TYPE_SD2 ? 0X40000000 : 0;
|
||||
|
||||
while ((status_ = cardAcmd(ACMD41, arg)) != R1_READY_STATE) {
|
||||
// check for timeout
|
||||
if (((uint16_t)millis() - t0) > SD_INIT_TIMEOUT) {
|
||||
error(SD_CARD_ERROR_ACMD41);
|
||||
goto fail;
|
||||
}
|
||||
}
|
||||
// if SD2 read OCR register to check for SDHC card
|
||||
if (type() == SD_CARD_TYPE_SD2) {
|
||||
if (cardCommand(CMD58, 0)) {
|
||||
error(SD_CARD_ERROR_CMD58);
|
||||
goto fail;
|
||||
}
|
||||
if ((spiRec() & 0XC0) == 0XC0) type(SD_CARD_TYPE_SDHC);
|
||||
// discard rest of ocr - contains allowed voltage range
|
||||
for (uint8_t i = 0; i < 3; i++) spiRec();
|
||||
}
|
||||
chipSelectHigh();
|
||||
|
||||
#ifndef SOFTWARE_SPI
|
||||
return setSckRate(sckRateID);
|
||||
#else // SOFTWARE_SPI
|
||||
return true;
|
||||
#endif // SOFTWARE_SPI
|
||||
|
||||
fail:
|
||||
chipSelectHigh();
|
||||
return false;
|
||||
}
|
||||
//------------------------------------------------------------------------------
|
||||
/**
|
||||
* Read a 512 byte block from an SD card.
|
||||
*
|
||||
* \param[in] blockNumber Logical block to be read.
|
||||
* \param[out] dst Pointer to the location that will receive the data.
|
||||
|
||||
* \return The value one, true, is returned for success and
|
||||
* the value zero, false, is returned for failure.
|
||||
*/
|
||||
bool Sd2Card::readBlock(uint32_t blockNumber, uint8_t* dst) {
|
||||
// use address if not SDHC card
|
||||
if (type()!= SD_CARD_TYPE_SDHC) blockNumber <<= 9;
|
||||
if (cardCommand(CMD17, blockNumber)) {
|
||||
error(SD_CARD_ERROR_CMD17);
|
||||
goto fail;
|
||||
}
|
||||
return readData(dst, 512);
|
||||
|
||||
fail:
|
||||
chipSelectHigh();
|
||||
return false;
|
||||
}
|
||||
//------------------------------------------------------------------------------
|
||||
/** Read one data block in a multiple block read sequence
|
||||
*
|
||||
* \param[in] dst Pointer to the location for the data to be read.
|
||||
*
|
||||
* \return The value one, true, is returned for success and
|
||||
* the value zero, false, is returned for failure.
|
||||
*/
|
||||
bool Sd2Card::readData(uint8_t *dst) {
|
||||
chipSelectLow();
|
||||
return readData(dst, 512);
|
||||
}
|
||||
//------------------------------------------------------------------------------
|
||||
bool Sd2Card::readData(uint8_t* dst, uint16_t count) {
|
||||
// wait for start block token
|
||||
uint16_t t0 = millis();
|
||||
while ((status_ = spiRec()) == 0XFF) {
|
||||
if (((uint16_t)millis() - t0) > SD_READ_TIMEOUT) {
|
||||
error(SD_CARD_ERROR_READ_TIMEOUT);
|
||||
goto fail;
|
||||
}
|
||||
}
|
||||
if (status_ != DATA_START_BLOCK) {
|
||||
error(SD_CARD_ERROR_READ);
|
||||
goto fail;
|
||||
}
|
||||
// transfer data
|
||||
spiRead(dst, count);
|
||||
|
||||
// discard CRC
|
||||
spiRec();
|
||||
spiRec();
|
||||
chipSelectHigh();
|
||||
return true;
|
||||
|
||||
fail:
|
||||
chipSelectHigh();
|
||||
return false;
|
||||
}
|
||||
//------------------------------------------------------------------------------
|
||||
/** read CID or CSR register */
|
||||
bool Sd2Card::readRegister(uint8_t cmd, void* buf) {
|
||||
uint8_t* dst = reinterpret_cast<uint8_t*>(buf);
|
||||
if (cardCommand(cmd, 0)) {
|
||||
error(SD_CARD_ERROR_READ_REG);
|
||||
goto fail;
|
||||
}
|
||||
return readData(dst, 16);
|
||||
|
||||
fail:
|
||||
chipSelectHigh();
|
||||
return false;
|
||||
}
|
||||
//------------------------------------------------------------------------------
|
||||
/** Start a read multiple blocks sequence.
|
||||
*
|
||||
* \param[in] blockNumber Address of first block in sequence.
|
||||
*
|
||||
* \note This function is used with readData() and readStop() for optimized
|
||||
* multiple block reads. SPI chipSelect must be low for the entire sequence.
|
||||
*
|
||||
* \return The value one, true, is returned for success and
|
||||
* the value zero, false, is returned for failure.
|
||||
*/
|
||||
bool Sd2Card::readStart(uint32_t blockNumber) {
|
||||
if (type()!= SD_CARD_TYPE_SDHC) blockNumber <<= 9;
|
||||
if (cardCommand(CMD18, blockNumber)) {
|
||||
error(SD_CARD_ERROR_CMD18);
|
||||
goto fail;
|
||||
}
|
||||
chipSelectHigh();
|
||||
return true;
|
||||
|
||||
fail:
|
||||
chipSelectHigh();
|
||||
return false;
|
||||
}
|
||||
//------------------------------------------------------------------------------
|
||||
/** End a read multiple blocks sequence.
|
||||
*
|
||||
* \return The value one, true, is returned for success and
|
||||
* the value zero, false, is returned for failure.
|
||||
*/
|
||||
bool Sd2Card::readStop() {
|
||||
chipSelectLow();
|
||||
if (cardCommand(CMD12, 0)) {
|
||||
error(SD_CARD_ERROR_CMD12);
|
||||
goto fail;
|
||||
}
|
||||
chipSelectHigh();
|
||||
return true;
|
||||
|
||||
fail:
|
||||
chipSelectHigh();
|
||||
return false;
|
||||
}
|
||||
//------------------------------------------------------------------------------
|
||||
/**
|
||||
* Set the SPI clock rate.
|
||||
*
|
||||
* \param[in] sckRateID A value in the range [0, 6].
|
||||
*
|
||||
* The SPI clock will be set to F_CPU/pow(2, 1 + sckRateID). The maximum
|
||||
* SPI rate is F_CPU/2 for \a sckRateID = 0 and the minimum rate is F_CPU/128
|
||||
* for \a scsRateID = 6.
|
||||
*
|
||||
* \return The value one, true, is returned for success and the value zero,
|
||||
* false, is returned for an invalid value of \a sckRateID.
|
||||
*/
|
||||
bool Sd2Card::setSckRate(uint8_t sckRateID) {
|
||||
if (sckRateID > 6) {
|
||||
error(SD_CARD_ERROR_SCK_RATE);
|
||||
return false;
|
||||
}
|
||||
spiRate_ = sckRateID;
|
||||
return true;
|
||||
}
|
||||
//------------------------------------------------------------------------------
|
||||
// wait for card to go not busy
|
||||
bool Sd2Card::waitNotBusy(uint16_t timeoutMillis) {
|
||||
uint16_t t0 = millis();
|
||||
while (spiRec() != 0XFF) {
|
||||
if (((uint16_t)millis() - t0) >= timeoutMillis) goto fail;
|
||||
}
|
||||
return true;
|
||||
|
||||
fail:
|
||||
return false;
|
||||
}
|
||||
//------------------------------------------------------------------------------
|
||||
/**
|
||||
* Writes a 512 byte block to an SD card.
|
||||
*
|
||||
* \param[in] blockNumber Logical block to be written.
|
||||
* \param[in] src Pointer to the location of the data to be written.
|
||||
* \return The value one, true, is returned for success and
|
||||
* the value zero, false, is returned for failure.
|
||||
*/
|
||||
bool Sd2Card::writeBlock(uint32_t blockNumber, const uint8_t* src) {
|
||||
// use address if not SDHC card
|
||||
if (type() != SD_CARD_TYPE_SDHC) blockNumber <<= 9;
|
||||
if (cardCommand(CMD24, blockNumber)) {
|
||||
error(SD_CARD_ERROR_CMD24);
|
||||
goto fail;
|
||||
}
|
||||
if (!writeData(DATA_START_BLOCK, src)) goto fail;
|
||||
|
||||
// wait for flash programming to complete
|
||||
if (!waitNotBusy(SD_WRITE_TIMEOUT)) {
|
||||
error(SD_CARD_ERROR_WRITE_TIMEOUT);
|
||||
goto fail;
|
||||
}
|
||||
// response is r2 so get and check two bytes for nonzero
|
||||
if (cardCommand(CMD13, 0) || spiRec()) {
|
||||
error(SD_CARD_ERROR_WRITE_PROGRAMMING);
|
||||
goto fail;
|
||||
}
|
||||
chipSelectHigh();
|
||||
return true;
|
||||
|
||||
fail:
|
||||
chipSelectHigh();
|
||||
return false;
|
||||
}
|
||||
//------------------------------------------------------------------------------
|
||||
/** Write one data block in a multiple block write sequence
|
||||
* \param[in] src Pointer to the location of the data to be written.
|
||||
* \return The value one, true, is returned for success and
|
||||
* the value zero, false, is returned for failure.
|
||||
*/
|
||||
bool Sd2Card::writeData(const uint8_t* src) {
|
||||
chipSelectLow();
|
||||
// wait for previous write to finish
|
||||
if (!waitNotBusy(SD_WRITE_TIMEOUT)) goto fail;
|
||||
if (!writeData(WRITE_MULTIPLE_TOKEN, src)) goto fail;
|
||||
chipSelectHigh();
|
||||
return true;
|
||||
|
||||
fail:
|
||||
error(SD_CARD_ERROR_WRITE_MULTIPLE);
|
||||
chipSelectHigh();
|
||||
return false;
|
||||
}
|
||||
//------------------------------------------------------------------------------
|
||||
// send one block of data for write block or write multiple blocks
|
||||
bool Sd2Card::writeData(uint8_t token, const uint8_t* src) {
|
||||
spiSendBlock(token, src);
|
||||
|
||||
spiSend(0xff); // dummy crc
|
||||
spiSend(0xff); // dummy crc
|
||||
|
||||
status_ = spiRec();
|
||||
if ((status_ & DATA_RES_MASK) != DATA_RES_ACCEPTED) {
|
||||
error(SD_CARD_ERROR_WRITE);
|
||||
goto fail;
|
||||
}
|
||||
return true;
|
||||
|
||||
fail:
|
||||
chipSelectHigh();
|
||||
return false;
|
||||
}
|
||||
//------------------------------------------------------------------------------
|
||||
/** Start a write multiple blocks sequence.
|
||||
*
|
||||
* \param[in] blockNumber Address of first block in sequence.
|
||||
* \param[in] eraseCount The number of blocks to be pre-erased.
|
||||
*
|
||||
* \note This function is used with writeData() and writeStop()
|
||||
* for optimized multiple block writes.
|
||||
*
|
||||
* \return The value one, true, is returned for success and
|
||||
* the value zero, false, is returned for failure.
|
||||
*/
|
||||
bool Sd2Card::writeStart(uint32_t blockNumber, uint32_t eraseCount) {
|
||||
// send pre-erase count
|
||||
if (cardAcmd(ACMD23, eraseCount)) {
|
||||
error(SD_CARD_ERROR_ACMD23);
|
||||
goto fail;
|
||||
}
|
||||
// use address if not SDHC card
|
||||
if (type() != SD_CARD_TYPE_SDHC) blockNumber <<= 9;
|
||||
if (cardCommand(CMD25, blockNumber)) {
|
||||
error(SD_CARD_ERROR_CMD25);
|
||||
goto fail;
|
||||
}
|
||||
chipSelectHigh();
|
||||
return true;
|
||||
|
||||
fail:
|
||||
chipSelectHigh();
|
||||
return false;
|
||||
}
|
||||
//------------------------------------------------------------------------------
|
||||
/** End a write multiple blocks sequence.
|
||||
*
|
||||
* \return The value one, true, is returned for success and
|
||||
* the value zero, false, is returned for failure.
|
||||
*/
|
||||
bool Sd2Card::writeStop() {
|
||||
chipSelectLow();
|
||||
if (!waitNotBusy(SD_WRITE_TIMEOUT)) goto fail;
|
||||
spiSend(STOP_TRAN_TOKEN);
|
||||
if (!waitNotBusy(SD_WRITE_TIMEOUT)) goto fail;
|
||||
chipSelectHigh();
|
||||
return true;
|
||||
|
||||
fail:
|
||||
error(SD_CARD_ERROR_STOP_TRAN);
|
||||
chipSelectHigh();
|
||||
return false;
|
||||
}
|
||||
|
||||
@ -1,46 +1,48 @@
|
||||
/* Arduino SdFat Library
|
||||
* Copyright (C) 2008 by William Greiman
|
||||
*
|
||||
* This file is part of the Arduino SdFat Library
|
||||
*
|
||||
* This Library is free software: you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation, either version 3 of the License, or
|
||||
* (at your option) any later version.
|
||||
*
|
||||
* This Library is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with the Arduino SdFat Library. If not, see
|
||||
* <http://www.gnu.org/licenses/>.
|
||||
*/
|
||||
#ifndef SdFatUtil_h
|
||||
#define SdFatUtil_h
|
||||
/**
|
||||
* \file
|
||||
* \brief Useful utility functions.
|
||||
*/
|
||||
#include <avr/pgmspace.h>
|
||||
#if ARDUINO < 100
|
||||
#include <WProgram.h>
|
||||
#else // ARDUINO
|
||||
#include <Arduino.h>
|
||||
#endif // ARDUINO
|
||||
/** Store and print a string in flash memory.*/
|
||||
#define PgmPrint(x) SerialPrint_P(PSTR(x))
|
||||
/** Store and print a string in flash memory followed by a CR/LF.*/
|
||||
#define PgmPrintln(x) SerialPrintln_P(PSTR(x))
|
||||
|
||||
namespace SdFatUtil {
|
||||
int FreeRam();
|
||||
void print_P(Print* pr, PGM_P str);
|
||||
void println_P(Print* pr, PGM_P str);
|
||||
void SerialPrint_P(PGM_P str);
|
||||
void SerialPrintln_P(PGM_P str);
|
||||
}
|
||||
|
||||
using namespace SdFatUtil; // NOLINT
|
||||
/* Arduino SdFat Library
|
||||
* Copyright (C) 2008 by William Greiman
|
||||
*
|
||||
* This file is part of the Arduino SdFat Library
|
||||
*
|
||||
* This Library is free software: you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation, either version 3 of the License, or
|
||||
* (at your option) any later version.
|
||||
*
|
||||
* This Library is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with the Arduino SdFat Library. If not, see
|
||||
* <http://www.gnu.org/licenses/>.
|
||||
*/
|
||||
#ifndef SdFatUtil_h
|
||||
#define SdFatUtil_h
|
||||
/**
|
||||
* \file
|
||||
* \brief Useful utility functions.
|
||||
*/
|
||||
#include <avr/pgmspace.h>
|
||||
#if ARDUINO < 100
|
||||
#define HardwareSerial_h // trick to disable the standard HWserial
|
||||
#include <WProgram.h>
|
||||
#include "MarlinSerial.h"
|
||||
#else // ARDUINO
|
||||
#include <Arduino.h>
|
||||
#endif // ARDUINO
|
||||
/** Store and print a string in flash memory.*/
|
||||
#define PgmPrint(x) SerialPrint_P(PSTR(x))
|
||||
/** Store and print a string in flash memory followed by a CR/LF.*/
|
||||
#define PgmPrintln(x) SerialPrintln_P(PSTR(x))
|
||||
|
||||
namespace SdFatUtil {
|
||||
int FreeRam();
|
||||
void print_P(Print* pr, PGM_P str);
|
||||
void println_P(Print* pr, PGM_P str);
|
||||
void SerialPrint_P(PGM_P str);
|
||||
void SerialPrintln_P(PGM_P str);
|
||||
}
|
||||
|
||||
using namespace SdFatUtil; // NOLINT
|
||||
#endif // #define SdFatUtil_h
|
||||
|
||||
Loading…
Reference in new issue