Jack Humbert
8 years ago
committed by
GitHub
commit
1524c2cb16
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ifndef MAKEFILE_INCLUDED
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include ../../Makefile
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endif
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@ -0,0 +1,85 @@
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/*
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Copyright 201 Nicolas Poirey <nicolas.poirey@gmail.com>
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This program 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 2 of the License, or
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(at your option) any later version.
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This program 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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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef FRENCHDEV_V1_CONFIG_H
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#define FRENCHDEV_V1_CONFIG_H
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#include "config_common.h"
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/* USB Device descriptor parameter */
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#define VENDOR_ID 0xFEED
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#define PRODUCT_ID 0x1307
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#define DEVICE_VER 0x0001
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#define MANUFACTURER Nicolas Poirey
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#define PRODUCT Frenchdev V1
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#define DESCRIPTION QMK keyboard firmware for Frenchdev
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/* key matrix size */
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#define MATRIX_ROWS 16
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#define MATRIX_COLS 6
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/* number of backlight levels */
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#define BACKLIGHT_LEVELS 3
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#define LED_BRIGHTNESS_LO 15
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#define LED_BRIGHTNESS_HI 255
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/* Set 0 if debouncing isn't needed */
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#define DEBOUNCE 5
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#define USB_MAX_POWER_CONSUMPTION 500
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#define MOUSEKEY_INTERVAL 20
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#define MOUSEKEY_DELAY 0
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#define MOUSEKEY_TIME_TO_MAX 5
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#define MOUSEKEY_MAX_SPEED 2
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#define MOUSEKEY_WHEEL_DELAY 0
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#define TAPPING_TOGGLE 1
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/* define if matrix has ghost */
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//#define MATRIX_HAS_GHOST
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#define TAPPING_TERM 200
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#define IGNORE_MOD_TAP_INTERRUPT // this makes it possible to do rolling combos (zx) with keys that convert to other keys on hold (z becomes ctrl when you hold it, and when this option isn't enabled, z rapidly followed by x actually sends Ctrl-x. That's bad.)
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/* key combination for command */
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#define IS_COMMAND() ( \
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keyboard_report->mods == (MOD_BIT(KC_LCTL) | MOD_BIT(KC_RCTL)) || \
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keyboard_report->mods == (MOD_BIT(KC_LSFT) | MOD_BIT(KC_RSFT)) \
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)
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/*
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* Feature disable options
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* These options are also useful to firmware size reduction.
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*/
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/* disable debug print */
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// #define NO_DEBUG
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/* disable print */
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// #define NO_PRINT
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/* disable action features */
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//#define NO_ACTION_LAYER
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//#define NO_ACTION_TAPPING
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//#define NO_ACTION_ONESHOT
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//#define NO_ACTION_MACRO
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//#define NO_ACTION_FUNCTION
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//#define DEBUG_MATRIX_SCAN_RATE
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#endif //FRENCHDEV_V1_CONFIG_H
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@ -0,0 +1,87 @@
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#include "frenchdev.h"
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#include "i2cmaster.h"
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bool i2c_initialized = 0;
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uint8_t mcp23018_status = 0x20;
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void matrix_init_kb(void) {
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// keyboard LEDs (see "PWM on ports OC1(A|B|C)" in "teensy-2-0.md")
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TCCR1A = 0b10101001; // set and configure fast PWM
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TCCR1B = 0b00001001; // set and configure fast PWM
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// unused pins - D4, D5, D7, E6
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// set as input with internal pull-ip enabled
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DDRD &= ~(1<<5 | 1<<4);
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DDRE &= ~(1<<6);
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PORTD |= (1<<5 | 1<<4);
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PORTE |= (1<<6);
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frenchdev_blink_all_leds();
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frenchdev_blink_all_leds();
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frenchdev_blink_all_leds();
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frenchdev_blink_all_leds();
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matrix_init_user();
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}
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void frenchdev_blink_all_leds(void)
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{
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frenchdev_led_all_off();
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frenchdev_led_all_set(LED_BRIGHTNESS_HI);
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frenchdev_led_1_on();
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_delay_ms(50);
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frenchdev_led_2_on();
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_delay_ms(50);
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frenchdev_led_3_on();
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_delay_ms(50);
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frenchdev_led_1_off();
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_delay_ms(50);
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frenchdev_led_2_off();
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_delay_ms(50);
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frenchdev_led_3_off();
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frenchdev_led_all_off();
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}
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uint8_t init_mcp23018(void) {
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mcp23018_status = 0x20;
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// I2C subsystem
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// uint8_t sreg_prev;
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// sreg_prev=SREG;
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// cli();
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if (i2c_initialized == 0) {
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i2c_init(); // on pins D(1,0)
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i2c_initialized++;
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_delay_ms(1000);
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}
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// set pin direction
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// - unused : input : 1
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// - input : input : 1
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// - driving : output : 0
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mcp23018_status = i2c_start(I2C_ADDR_WRITE); if (mcp23018_status) goto out;
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mcp23018_status = i2c_write(IODIRA); if (mcp23018_status) goto out;
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mcp23018_status = i2c_write(0b00000000); if (mcp23018_status) goto out;
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mcp23018_status = i2c_write(0b00111111); if (mcp23018_status) goto out;
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i2c_stop();
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// set pull-up
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// - unused : on : 1
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// - input : on : 1
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// - driving : off : 0
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mcp23018_status = i2c_start(I2C_ADDR_WRITE); if (mcp23018_status) goto out;
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mcp23018_status = i2c_write(GPPUA); if (mcp23018_status) goto out;
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mcp23018_status = i2c_write(0b00000000); if (mcp23018_status) goto out;
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mcp23018_status = i2c_write(0b00111111); if (mcp23018_status) goto out;
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out:
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i2c_stop();
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// SREG=sreg_prev;
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return mcp23018_status;
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}
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@ -0,0 +1,115 @@
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#ifndef FRENCHDEV_V1_H
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#define FRENCHDEV_V1_H
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#include "quantum.h"
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#include <stdint.h>
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#include <stdbool.h>
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#include "i2cmaster.h"
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#include <util/delay.h>
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#define CPU_PRESCALE(n) (CLKPR = 0x80, CLKPR = (n))
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#define CPU_16MHz 0x00
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// I2C aliases and register addresses (see "mcp23018.md" on tmk repository)
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#define I2C_ADDR 0b0100000
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#define I2C_ADDR_WRITE ( (I2C_ADDR<<1) | I2C_WRITE )
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#define I2C_ADDR_READ ( (I2C_ADDR<<1) | I2C_READ )
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#define IODIRA 0x00 // i/o direction register
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#define IODIRB 0x01
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#define GPPUA 0x0C // GPIO pull-up resistor register
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#define GPPUB 0x0D
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#define GPIOA 0x12 // general purpose i/o port register (write modifies OLAT)
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#define GPIOB 0x13
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#define OLATA 0x14 // output latch register
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#define OLATB 0x15
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extern uint8_t mcp23018_status;
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void init_frenchdev(void);
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void frenchdev_blink_all_leds(void);
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uint8_t init_mcp23018(void);
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#define LED_BRIGHTNESS_LO 15
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#define LED_BRIGHTNESS_HI 255
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inline void frenchdev_board_led_on(void) { DDRD |= (1<<6); PORTD |= (1<<6); }
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inline void frenchdev_led_1_on(void) { DDRB |= (1<<5); PORTB |= (1<<5); }
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inline void frenchdev_led_2_on(void) { DDRB |= (1<<6); PORTB |= (1<<6); }
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inline void frenchdev_led_3_on(void) { DDRB |= (1<<7); PORTB |= (1<<7); }
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inline void frenchdev_led_on(uint8_t led) { DDRB |= (1<<(led+4)); PORTB |= (1<<(led+4)); }
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inline void frenchdev_board_led_off(void) { DDRD &= ~(1<<6); PORTD &= ~(1<<6); }
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inline void frenchdev_led_1_off(void) { DDRB &= ~(1<<5); PORTB &= ~(1<<5); }
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inline void frenchdev_led_2_off(void) { DDRB &= ~(1<<6); PORTB &= ~(1<<6); }
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inline void frenchdev_led_3_off(void) { DDRB &= ~(1<<7); PORTB &= ~(1<<7); }
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inline void frenchdev_led_off(uint8_t led) { DDRB &= ~(1<<(led+4)); PORTB &= ~(1<<(led+4)); }
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inline void frenchdev_led_all_on(void)
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{
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frenchdev_board_led_on();
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frenchdev_led_1_on();
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frenchdev_led_2_on();
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frenchdev_led_3_on();
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}
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inline void frenchdev_led_all_off(void)
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{
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frenchdev_board_led_off();
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frenchdev_led_1_off();
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frenchdev_led_2_off();
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frenchdev_led_3_off();
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}
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inline void frenchdev_led_1_set(uint8_t n) { OCR1A = n; }
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inline void frenchdev_led_2_set(uint8_t n) { OCR1B = n; }
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inline void frenchdev_led_3_set(uint8_t n) { OCR1C = n; }
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inline void frenchdev_led_set(uint8_t led, uint8_t n) {
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(led == 1) ? (OCR1A = n) :
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(led == 2) ? (OCR1B = n) :
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(OCR1C = n);
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}
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inline void frenchdev_led_all_set(uint8_t n)
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{
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frenchdev_led_1_set(n);
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frenchdev_led_2_set(n);
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frenchdev_led_3_set(n);
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}
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#define KEYMAP( \
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\
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k01, k02, k03, k04, k05, k06, k09, k0a, k0b, k0c, k0d, k0e, \
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k10, k11, k12, k13, k14, k15, k16, k19, k1a, k1b, k1c, k1d, k1e, k1f, \
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k20, k21, k22, k23, k24, k25, k26, k29, k2a, k2b, k2c, k2d, k2e, k2f, \
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k30, k31, k32, k33, k34, k35, k36, k39, k3a, k3b, k3c, k3d, k3e, k3f, \
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k40, k41, k42, k43, k44, k45, k46, k47, k37, k38, k48, k49, k4a, k4b, k4c, k4d, k4e, k4f, \
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k50, k51, k52, k53, k54, k55, k56, k57, k58, k59, k5a, k5b, k5c, k5d, k5e, k5f, \
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\
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PL1, PL2, PL3, \
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PR1, PR2, PR3 \
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) \
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\
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/* matrix positions, inverted left and right for I2C to be on row 0-7 */\
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{ \
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\
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{ k5f, k4f, k3f, k2f, k1f, KC_NO}, \
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{ k5e, k4e, k3e, k2e, k1e, k0e }, \
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{ k5d, k4d, k3d, k2d, k1d, k0d }, \
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{ k5c, k4c, k3c, k2c, k1c, k0c }, \
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{ k5b, k4b, k3b, k2b, k1b, k0b }, \
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{ k5a, k4a, k3a, k2a, k1a, k0a }, \
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{ k59, k49, k39, k29, k19, k09 }, \
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{ k58, k48, k38, PR1, PR2, PR3 }, \
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\
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{ k57, k47, k37, PL1, PL2, PL3 }, \
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{ k56, k46, k36, k26, k16, k06 }, \
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{ k55, k45, k35, k25, k15, k05 }, \
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{ k54, k44, k34, k24, k14, k04 }, \
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{ k53, k43, k33, k23, k13, k03 }, \
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{ k52, k42, k32, k22, k12, k02 }, \
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{ k51, k41, k31, k21, k11, k01 }, \
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{ k50, k40, k30, k20, k10, KC_NO } \
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}
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#endif
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@ -0,0 +1,178 @@
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#ifndef _I2CMASTER_H
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#define _I2CMASTER_H 1
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/*************************************************************************
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* Title: C include file for the I2C master interface
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* (i2cmaster.S or twimaster.c)
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* Author: Peter Fleury <pfleury@gmx.ch> http://jump.to/fleury
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* File: $Id: i2cmaster.h,v 1.10 2005/03/06 22:39:57 Peter Exp $
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* Software: AVR-GCC 3.4.3 / avr-libc 1.2.3
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* Target: any AVR device
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* Usage: see Doxygen manual
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**************************************************************************/
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#ifdef DOXYGEN
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/**
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@defgroup pfleury_ic2master I2C Master library
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@code #include <i2cmaster.h> @endcode
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@brief I2C (TWI) Master Software Library
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Basic routines for communicating with I2C slave devices. This single master
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implementation is limited to one bus master on the I2C bus.
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This I2c library is implemented as a compact assembler software implementation of the I2C protocol
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which runs on any AVR (i2cmaster.S) and as a TWI hardware interface for all AVR with built-in TWI hardware (twimaster.c).
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Since the API for these two implementations is exactly the same, an application can be linked either against the
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software I2C implementation or the hardware I2C implementation.
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Use 4.7k pull-up resistor on the SDA and SCL pin.
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Adapt the SCL and SDA port and pin definitions and eventually the delay routine in the module
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i2cmaster.S to your target when using the software I2C implementation !
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Adjust the CPU clock frequence F_CPU in twimaster.c or in the Makfile when using the TWI hardware implementaion.
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@note
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The module i2cmaster.S is based on the Atmel Application Note AVR300, corrected and adapted
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to GNU assembler and AVR-GCC C call interface.
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Replaced the incorrect quarter period delays found in AVR300 with
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half period delays.
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@author Peter Fleury pfleury@gmx.ch http://jump.to/fleury
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@par API Usage Example
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The following code shows typical usage of this library, see example test_i2cmaster.c
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@code
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#include <i2cmaster.h>
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#define Dev24C02 0xA2 // device address of EEPROM 24C02, see datasheet
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int main(void)
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{
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unsigned char ret;
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i2c_init(); // initialize I2C library
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// write 0x75 to EEPROM address 5 (Byte Write)
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i2c_start_wait(Dev24C02+I2C_WRITE); // set device address and write mode
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i2c_write(0x05); // write address = 5
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i2c_write(0x75); // write value 0x75 to EEPROM
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i2c_stop(); // set stop conditon = release bus
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// read previously written value back from EEPROM address 5
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i2c_start_wait(Dev24C02+I2C_WRITE); // set device address and write mode
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i2c_write(0x05); // write address = 5
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i2c_rep_start(Dev24C02+I2C_READ); // set device address and read mode
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||||
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ret = i2c_readNak(); // read one byte from EEPROM
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i2c_stop();
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for(;;);
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}
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||||
@endcode
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||||
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||||
*/
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#endif /* DOXYGEN */
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/**@{*/
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#if (__GNUC__ * 100 + __GNUC_MINOR__) < 304
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#error "This library requires AVR-GCC 3.4 or later, update to newer AVR-GCC compiler !"
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#endif
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#include <avr/io.h>
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||||
/** defines the data direction (reading from I2C device) in i2c_start(),i2c_rep_start() */
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#define I2C_READ 1
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||||
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||||
/** defines the data direction (writing to I2C device) in i2c_start(),i2c_rep_start() */
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#define I2C_WRITE 0
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||||
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/**
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@brief initialize the I2C master interace. Need to be called only once
|
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@param void
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||||
@return none
|
||||
*/
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||||
extern void i2c_init(void);
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||||
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||||
/**
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||||
@brief Terminates the data transfer and releases the I2C bus
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||||
@param void
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||||
@return none
|
||||
*/
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||||
extern void i2c_stop(void);
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||||
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||||
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||||
/**
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||||
@brief Issues a start condition and sends address and transfer direction
|
||||
|
||||
@param addr address and transfer direction of I2C device
|
||||
@retval 0 device accessible
|
||||
@retval 1 failed to access device
|
||||
*/
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||||
extern unsigned char i2c_start(unsigned char addr);
|
||||
|
||||
|
||||
/**
|
||||
@brief Issues a repeated start condition and sends address and transfer direction
|
||||
|
||||
@param addr address and transfer direction of I2C device
|
||||
@retval 0 device accessible
|
||||
@retval 1 failed to access device
|
||||
*/
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||||
extern unsigned char i2c_rep_start(unsigned char addr);
|
||||
|
||||
|
||||
/**
|
||||
@brief Issues a start condition and sends address and transfer direction
|
||||
|
||||
If device is busy, use ack polling to wait until device ready
|
||||
@param addr address and transfer direction of I2C device
|
||||
@return none
|
||||
*/
|
||||
extern void i2c_start_wait(unsigned char addr);
|
||||
|
||||
|
||||
/**
|
||||
@brief Send one byte to I2C device
|
||||
@param data byte to be transfered
|
||||
@retval 0 write successful
|
||||
@retval 1 write failed
|
||||
*/
|
||||
extern unsigned char i2c_write(unsigned char data);
|
||||
|
||||
|
||||
/**
|
||||
@brief read one byte from the I2C device, request more data from device
|
||||
@return byte read from I2C device
|
||||
*/
|
||||
extern unsigned char i2c_readAck(void);
|
||||
|
||||
/**
|
||||
@brief read one byte from the I2C device, read is followed by a stop condition
|
||||
@return byte read from I2C device
|
||||
*/
|
||||
extern unsigned char i2c_readNak(void);
|
||||
|
||||
/**
|
||||
@brief read one byte from the I2C device
|
||||
|
||||
Implemented as a macro, which calls either i2c_readAck or i2c_readNak
|
||||
|
||||
@param ack 1 send ack, request more data from device<br>
|
||||
0 send nak, read is followed by a stop condition
|
||||
@return byte read from I2C device
|
||||
*/
|
||||
extern unsigned char i2c_read(unsigned char ack);
|
||||
#define i2c_read(ack) (ack) ? i2c_readAck() : i2c_readNak();
|
||||
|
||||
|
||||
/**@}*/
|
||||
#endif
|
||||
@ -0,0 +1,13 @@
|
||||
layout :
|
||||
|
||||
[default layout](http://i.imgur.com/r2Nvr4p.png)
|
||||
|
||||
the thing when finished :
|
||||
http://imgur.com/a/6FY8v
|
||||
|
||||
concept and mockup:
|
||||
http://imgur.com/a/R0vvs
|
||||
|
||||
to build :
|
||||
|
||||
docker run --rm -e keymap=default -e keyboard=frenchdev --rm -v D:/Repositories/qmk:/qmk:rw edasque/qmk_firmware
|
||||
@ -0,0 +1,396 @@
|
||||
/*
|
||||
|
||||
Note to self: adapted from ergodox EZ matrix
|
||||
The "column" and "row" in here actually refers to the opposite on the keyboard
|
||||
see definition of KEYMAP in v1.h, the grid is transposed so that a "row" in here is actually a "column" on the physical keyboard
|
||||
Nicolas
|
||||
|
||||
Note for ErgoDox EZ customizers: Here be dragons!
|
||||
This is not a file you want to be messing with.
|
||||
All of the interesting stuff for you is under keymaps/ :)
|
||||
Love, Erez
|
||||
|
||||
Copyright 2013 Oleg Kostyuk <cub.uanic@gmail.com>
|
||||
Copyright 2013 Nicolas Poirey <nicolas.poirey@gmail.com>
|
||||
|
||||
This program 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 2 of the License, or
|
||||
(at your option) any later version.
|
||||
|
||||
This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
*/
|
||||
|
||||
/*
|
||||
* scan matrix
|
||||
*/
|
||||
#include <stdint.h>
|
||||
#include <stdbool.h>
|
||||
#include <avr/io.h>
|
||||
#include "wait.h"
|
||||
#include "action_layer.h"
|
||||
#include "print.h"
|
||||
#include "debug.h"
|
||||
#include "util.h"
|
||||
#include "matrix.h"
|
||||
#include "frenchdev.h"
|
||||
#include "i2cmaster.h"
|
||||
#ifdef DEBUG_MATRIX_SCAN_RATE
|
||||
#include "timer.h"
|
||||
#endif
|
||||
|
||||
/*
|
||||
* This constant define not debouncing time in msecs, but amount of matrix
|
||||
* scan loops which should be made to get stable debounced results.
|
||||
*
|
||||
* On Ergodox matrix scan rate is relatively low, because of slow I2C.
|
||||
* Now it's only 317 scans/second, or about 3.15 msec/scan.
|
||||
* According to Cherry specs, debouncing time is 5 msec.
|
||||
*
|
||||
* And so, there is no sense to have DEBOUNCE higher than 2.
|
||||
*/
|
||||
|
||||
#ifndef DEBOUNCE
|
||||
# define DEBOUNCE 5
|
||||
#endif
|
||||
static uint8_t debouncing = DEBOUNCE;
|
||||
|
||||
/* matrix state(1:on, 0:off) */
|
||||
static matrix_row_t matrix[MATRIX_ROWS];
|
||||
static matrix_row_t matrix_debouncing[MATRIX_ROWS];
|
||||
|
||||
static matrix_row_t read_cols(uint8_t row);
|
||||
static void init_cols(void);
|
||||
static void unselect_rows(void);
|
||||
static void select_row(uint8_t row);
|
||||
|
||||
static uint8_t mcp23018_reset_loop;
|
||||
|
||||
#ifdef DEBUG_MATRIX_SCAN_RATE
|
||||
uint32_t matrix_timer;
|
||||
uint32_t matrix_scan_count;
|
||||
#endif
|
||||
|
||||
|
||||
__attribute__ ((weak))
|
||||
void matrix_init_user(void) {}
|
||||
|
||||
__attribute__ ((weak))
|
||||
void matrix_scan_user(void) {}
|
||||
|
||||
__attribute__ ((weak))
|
||||
void matrix_init_kb(void) {
|
||||
matrix_init_user();
|
||||
}
|
||||
|
||||
__attribute__ ((weak))
|
||||
void matrix_scan_kb(void) {
|
||||
matrix_scan_user();
|
||||
}
|
||||
|
||||
inline
|
||||
uint8_t matrix_rows(void)
|
||||
{
|
||||
return MATRIX_ROWS;
|
||||
}
|
||||
|
||||
inline
|
||||
uint8_t matrix_cols(void)
|
||||
{
|
||||
return MATRIX_COLS;
|
||||
}
|
||||
|
||||
void matrix_init(void)
|
||||
{
|
||||
// initialize row and col
|
||||
debug_enable = true;
|
||||
debug_matrix = true;
|
||||
debug_keyboard = true;
|
||||
debug_mouse = true;
|
||||
|
||||
mcp23018_status = init_mcp23018();
|
||||
|
||||
|
||||
unselect_rows();
|
||||
init_cols();
|
||||
|
||||
// initialize matrix state: all keys off
|
||||
for (uint8_t i=0; i < MATRIX_ROWS; i++) {
|
||||
matrix[i] = 0;
|
||||
matrix_debouncing[i] = 0;
|
||||
}
|
||||
|
||||
#ifdef DEBUG_MATRIX_SCAN_RATE
|
||||
matrix_timer = timer_read32();
|
||||
matrix_scan_count = 0;
|
||||
#endif
|
||||
|
||||
matrix_init_quantum();
|
||||
|
||||
}
|
||||
|
||||
void matrix_power_up(void) {
|
||||
mcp23018_status = init_mcp23018();
|
||||
|
||||
unselect_rows();
|
||||
init_cols();
|
||||
|
||||
// initialize matrix state: all keys off
|
||||
for (uint8_t i=0; i < MATRIX_ROWS; i++) {
|
||||
matrix[i] = 0;
|
||||
matrix_debouncing[i] = 0;
|
||||
}
|
||||
|
||||
#ifdef DEBUG_MATRIX_SCAN_RATE
|
||||
matrix_timer = timer_read32();
|
||||
matrix_scan_count = 0;
|
||||
#endif
|
||||
|
||||
}
|
||||
|
||||
uint8_t matrix_scan(void)
|
||||
{
|
||||
if (mcp23018_status) { // if there was an error
|
||||
if (++mcp23018_reset_loop == 0) {
|
||||
// since mcp23018_reset_loop is 8 bit - we'll try to reset once in 255 matrix scans
|
||||
// this will be approx bit more frequent than once per second
|
||||
print("trying to reset mcp23018\n");
|
||||
mcp23018_status = init_mcp23018();
|
||||
if (mcp23018_status) {
|
||||
print("left side not responding\n");
|
||||
} else {
|
||||
print("left side attached\n");
|
||||
frenchdev_blink_all_leds();
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
#ifdef DEBUG_MATRIX_SCAN_RATE
|
||||
matrix_scan_count++;
|
||||
|
||||
uint32_t timer_now = timer_read32();
|
||||
if (TIMER_DIFF_32(timer_now, matrix_timer)>1000) {
|
||||
print("matrix scan frequency: ");
|
||||
pdec(matrix_scan_count);
|
||||
print("\n");
|
||||
|
||||
matrix_timer = timer_now;
|
||||
matrix_scan_count = 0;
|
||||
}
|
||||
#endif
|
||||
|
||||
for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
|
||||
select_row(i);
|
||||
wait_us(30); // without this wait read unstable value.
|
||||
matrix_row_t cols = read_cols(i);
|
||||
if (matrix_debouncing[i] != cols) {
|
||||
matrix_debouncing[i] = cols;
|
||||
if (debouncing) {
|
||||
debug("bounce!: "); debug_hex(debouncing); debug("\n");
|
||||
}
|
||||
debouncing = DEBOUNCE;
|
||||
}
|
||||
unselect_rows();
|
||||
}
|
||||
|
||||
if (debouncing) {
|
||||
if (--debouncing) {
|
||||
wait_us(1);
|
||||
// this should be wait_ms(1) but has been left as-is at EZ's request
|
||||
} else {
|
||||
for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
|
||||
matrix[i] = matrix_debouncing[i];
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
matrix_scan_quantum();
|
||||
|
||||
return 1;
|
||||
}
|
||||
|
||||
bool matrix_is_modified(void)
|
||||
{
|
||||
if (debouncing) return false;
|
||||
return true;
|
||||
}
|
||||
|
||||
inline
|
||||
bool matrix_is_on(uint8_t row, uint8_t col)
|
||||
{
|
||||
return (matrix[row] & ((matrix_row_t)1<<col));
|
||||
}
|
||||
|
||||
inline
|
||||
matrix_row_t matrix_get_row(uint8_t row)
|
||||
{
|
||||
return matrix[row];
|
||||
}
|
||||
|
||||
void matrix_print(void)
|
||||
{
|
||||
print("\nr/c 0123456789ABCDEF\n");
|
||||
for (uint8_t row = 0; row < MATRIX_ROWS; row++) {
|
||||
phex(row); print(": ");
|
||||
pbin_reverse16(matrix_get_row(row));
|
||||
print("\n");
|
||||
}
|
||||
}
|
||||
|
||||
uint8_t matrix_key_count(void)
|
||||
{
|
||||
uint8_t count = 0;
|
||||
for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
|
||||
count += bitpop16(matrix[i]);
|
||||
}
|
||||
return count;
|
||||
}
|
||||
|
||||
/* Column pin configuration
|
||||
*
|
||||
* Teensy
|
||||
* col: 0 1 2 3 4 5
|
||||
* pin: F0 F1 F4 F5 F6 F7
|
||||
*
|
||||
* MCP23018
|
||||
* col: 0 1 2 3 4 5
|
||||
* pin: B5 B4 B3 B2 B1 B0
|
||||
*/
|
||||
static void init_cols(void)
|
||||
{
|
||||
// init on mcp23018
|
||||
// not needed, already done as part of init_mcp23018()
|
||||
|
||||
// init on teensy
|
||||
// Input with pull-up(DDR:0, PORT:1)
|
||||
DDRF &= ~(1<<7 | 1<<6 | 1<<5 | 1<<4 | 1<<1 | 1<<0);
|
||||
PORTF |= (1<<7 | 1<<6 | 1<<5 | 1<<4 | 1<<1 | 1<<0);
|
||||
}
|
||||
|
||||
static matrix_row_t read_cols(uint8_t row)
|
||||
{
|
||||
if (row < 8) {
|
||||
if (mcp23018_status) { // if there was an error
|
||||
return 0;
|
||||
} else {
|
||||
uint8_t data = 0;
|
||||
mcp23018_status = i2c_start(I2C_ADDR_WRITE); if (mcp23018_status) goto out;
|
||||
mcp23018_status = i2c_write(GPIOB); if (mcp23018_status) goto out;
|
||||
mcp23018_status = i2c_start(I2C_ADDR_READ); if (mcp23018_status) goto out;
|
||||
data = i2c_readNak();
|
||||
data = ~data;
|
||||
out:
|
||||
i2c_stop();
|
||||
return data;
|
||||
}
|
||||
} else {
|
||||
// read from teensy
|
||||
return
|
||||
(PINF&(1<<0) ? 0 : (1<<0)) |
|
||||
(PINF&(1<<1) ? 0 : (1<<1)) |
|
||||
(PINF&(1<<4) ? 0 : (1<<2)) |
|
||||
(PINF&(1<<5) ? 0 : (1<<3)) |
|
||||
(PINF&(1<<6) ? 0 : (1<<4)) |
|
||||
(PINF&(1<<7) ? 0 : (1<<5)) ;
|
||||
}
|
||||
}
|
||||
|
||||
/* Row pin configuration
|
||||
*
|
||||
* Teensy
|
||||
* row: 7 8 9 10 11 12 13
|
||||
* pin: B0 B1 B2 B3 D2 D3 C6
|
||||
*
|
||||
* MCP23018
|
||||
* row: 0 1 2 3 4 5 6
|
||||
* pin: A0 A1 A2 A3 A4 A5 A6
|
||||
*/
|
||||
static void unselect_rows(void)
|
||||
{
|
||||
// unselect on mcp23018
|
||||
if (mcp23018_status) { // if there was an error
|
||||
// do nothing
|
||||
} else {
|
||||
// set all rows hi-Z : 1
|
||||
mcp23018_status = i2c_start(I2C_ADDR_WRITE); if (mcp23018_status) goto out;
|
||||
mcp23018_status = i2c_write(GPIOA); if (mcp23018_status) goto out;
|
||||
mcp23018_status = i2c_write( 0xFF
|
||||
& ~(0<<8)
|
||||
); if (mcp23018_status) goto out;
|
||||
out:
|
||||
i2c_stop();
|
||||
}
|
||||
|
||||
// unselect on teensy
|
||||
// Hi-Z(DDR:0, PORT:0) to unselect
|
||||
DDRB &= ~(1<<0 | 1<<1 | 1<<2 | 1<<3);
|
||||
PORTB &= ~(1<<0 | 1<<1 | 1<<2 | 1<<3);
|
||||
DDRD &= ~(1<<2 | 1<<3);
|
||||
PORTD &= ~(1<<2 | 1<<3);
|
||||
DDRC &= ~(1<<6 | 1<<7);
|
||||
PORTC &= ~(1<<6 | 1<<7);
|
||||
}
|
||||
|
||||
static void select_row(uint8_t row)
|
||||
{
|
||||
if (row < 8) {
|
||||
// select on mcp23018
|
||||
if (mcp23018_status) { // if there was an error
|
||||
// do nothing
|
||||
} else {
|
||||
// set active row low : 0
|
||||
// set other rows hi-Z : 1
|
||||
mcp23018_status = i2c_start(I2C_ADDR_WRITE); if (mcp23018_status) goto out;
|
||||
mcp23018_status = i2c_write(GPIOA); if (mcp23018_status) goto out;
|
||||
mcp23018_status = i2c_write( 0xFF & ~(1<<row)
|
||||
& ~(0<<8)
|
||||
); if (mcp23018_status) goto out;
|
||||
out:
|
||||
i2c_stop();
|
||||
}
|
||||
} else {
|
||||
// select on teensy
|
||||
// Output low(DDR:1, PORT:0) to select
|
||||
switch (row) {
|
||||
case 8:
|
||||
DDRB |= (1<<0);
|
||||
PORTB &= ~(1<<0);
|
||||
break;
|
||||
case 9:
|
||||
DDRB |= (1<<1);
|
||||
PORTB &= ~(1<<1);
|
||||
break;
|
||||
case 10:
|
||||
DDRB |= (1<<2);
|
||||
PORTB &= ~(1<<2);
|
||||
break;
|
||||
case 11:
|
||||
DDRB |= (1<<3);
|
||||
PORTB &= ~(1<<3);
|
||||
break;
|
||||
case 12:
|
||||
DDRD |= (1<<2);
|
||||
PORTD &= ~(1<<3);
|
||||
break;
|
||||
case 13:
|
||||
DDRD |= (1<<3);
|
||||
PORTD &= ~(1<<3);
|
||||
break;
|
||||
case 14:
|
||||
DDRC |= (1<<6);
|
||||
PORTC &= ~(1<<6);
|
||||
break;
|
||||
case 15:
|
||||
DDRC |= (1<<7);
|
||||
PORTC &= ~(1<<7);
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
@ -0,0 +1,102 @@
|
||||
# Frenchdev : My take on a splitted keyboard for dev and french language
|
||||
Concept based on
|
||||
- [ergodox](https://ergodox-ez.com/)
|
||||
- [katy](https://deskthority.net/workshop-f7/katy-keyboard-or-k80cs-key80-contoured-split-t8524.html)
|
||||
|
||||
with the added possibility to connect up to 6 external switches like pedals,
|
||||
and somewhat like the katy, not all keys are on the same level for easier reach.
|
||||
|
||||
###Photos
|
||||
- [default layout](http://i.imgur.com/r2Nvr4p.png)
|
||||
- [editable layout on keyboard layout editor](http://www.keyboard-layout-editor.com/#/gists/4480e3ab8026eb7c710a7e22203ef4aa) (keys placement is NOT precise on this)
|
||||
- [the thing when finished](http://imgur.com/a/6FY8v)
|
||||
- [concept and cardboard mockup](http://imgur.com/a/R0vvs)
|
||||
|
||||
##Build instructions
|
||||
|
||||
docker run --rm -e keymap=default -e keyboard=frenchdev --rm -v D:/Repositories/qmk:/qmk:rw edasque/qmk_firmware
|
||||
|
||||
##Laser-cuttable file
|
||||
There is intentionnaly no hole for the TRRS connector, you are supposed to use a drill for it.
|
||||
This way if you don't want to use the pedals you don't have a useless hole. Plus it's cleaner.
|
||||
http://qmk.fm/frenchdev/frenchdev_v1_lasercut_template.svg
|
||||
|
||||
##Side stickers
|
||||
You can find my original file here : http://qmk.fm/frenchdev/example_printable_stickers.svg
|
||||
|
||||
I used it when training but now I use blanks and the layout is different.
|
||||
I still uploaded it because I think it can be a good jumpstart for any temporary stickers on the
|
||||
side of keycaps.
|
||||
|
||||
##List of parts
|
||||
- I2C mcp23018
|
||||
- [teensy 2](https://www.pjrc.com/store/teensy.html)
|
||||
- 3 LED, 5mm tall with flat head
|
||||
- 3 330 ohm resistor
|
||||
- 2 470 ohm resistor
|
||||
- 2 TRRS connectors
|
||||
- 1 [micro usb breakout board](http://www.ebay.com/itm/-/201387922085?)
|
||||
- 88 cherry/gateron switchs
|
||||
- 94 4148 diodes
|
||||
- 34 R4 keys
|
||||
- 14 R3 keys
|
||||
- 20 R2 keys
|
||||
- 22 R1 keys
|
||||
|
||||
if you fancy adding pedals :
|
||||
[these are good enough and cheap](https://www.amazon.fr/gp/product/B00V7WITKI/ref=oh_aui_detailpage_o04_s00?ie=UTF8&psc=1). You also need a RCA connector for each of those to replace the included cable
|
||||
|
||||
If you (or your coworkers) find them too loud you can replace the switch inside them.
|
||||
For once we don't really care about what's inside :)
|
||||
|
||||
##Various indications
|
||||
|
||||
The PHYSICAL rows and columns are connected as such :
|
||||
|
||||
on right hand (slave) :
|
||||
|
||||
I2C mcp23018
|
||||
.------- --------.
|
||||
GND -| 1 VSS \_/ NC 28 |
|
||||
| 2 NC A7 27 |- C15
|
||||
R5 -| 3 B0 A6 26 |- C14
|
||||
R4 -| 4 B1 A5 25 |- C13
|
||||
R3 -| 5 B2 A4 24 |- C12
|
||||
R2 -| 6 B3 A3 23 |- C11
|
||||
R1 -| 7 B4 A2 22 |- C10
|
||||
R0 -| 8 B5 A1 21 |- C9
|
||||
| 9 B6 A0 20 |- C8
|
||||
| 10 B7 INTA 19 |
|
||||
VCC -| 11 VDD INTB 18 |
|
||||
SCL -| 12 SCL NC 17 |
|
||||
SDA -| 13 SDA RST 16 |- VCC
|
||||
| 14 NC ADDR 15 |- GND
|
||||
`------------------'
|
||||
|
||||
and on left hand (main) :
|
||||
|
||||
TEENSY
|
||||
.------------------.
|
||||
| GND VCC |
|
||||
C7 -| B0 F0 |- R5
|
||||
C6 -| B1 F1 |- R4
|
||||
C5 -| B2 F4 |- R3
|
||||
C4 -| B3 F5 |- R2
|
||||
LEDC -| B7 F6 |- R1
|
||||
SCL -| D0 F7 |- R0
|
||||
SDA -| D1 B6 |- LEDB
|
||||
C3 -| D2 B5 |- LEDA
|
||||
C2 -| D3 B4 |
|
||||
C1 -| C6 D7 |
|
||||
C0 -| C7 D6 |- GND
|
||||
| D5 D4 |
|
||||
| VCC RST |
|
||||
| E6 GND |
|
||||
`------------------'
|
||||
|
||||
We use pull up resistor for SCL and VDA, see https://github.com/ErgoDox-EZ/docs/blob/master/ErgoDox%20EZ%20Schematic.pdf for example
|
||||
|
||||
the connector is a standard TRRS (jack with audio + mic)
|
||||
|
||||
Diode direction is row to column
|
||||
|
||||
@ -0,0 +1,92 @@
|
||||
#----------------------------------------------------------------------------
|
||||
# On command line:
|
||||
#
|
||||
# make = Make software.
|
||||
#
|
||||
# make clean = Clean out built project files.
|
||||
#
|
||||
# That's pretty much all you need. To compile, always go make clean,
|
||||
# followed by make.
|
||||
#
|
||||
# For advanced users only:
|
||||
# make teensy = Download the hex file to the device, using teensy_loader_cli.
|
||||
# (must have teensy_loader_cli installed).
|
||||
#
|
||||
#----------------------------------------------------------------------------
|
||||
|
||||
# # project specific files
|
||||
SRC = twimaster.c \
|
||||
matrix.c
|
||||
|
||||
# MCU name
|
||||
MCU = atmega32u4
|
||||
|
||||
# Processor frequency.
|
||||
# This will define a symbol, F_CPU, in all source code files equal to the
|
||||
# processor frequency in Hz. You can then use this symbol in your source code to
|
||||
# calculate timings. Do NOT tack on a 'UL' at the end, this will be done
|
||||
# automatically to create a 32-bit value in your source code.
|
||||
#
|
||||
# This will be an integer division of F_USB below, as it is sourced by
|
||||
# F_USB after it has run through any CPU prescalers. Note that this value
|
||||
# does not *change* the processor frequency - it should merely be updated to
|
||||
# reflect the processor speed set externally so that the code can use accurate
|
||||
# software delays.
|
||||
F_CPU = 16000000
|
||||
|
||||
|
||||
#
|
||||
# LUFA specific
|
||||
#
|
||||
# Target architecture (see library "Board Types" documentation).
|
||||
ARCH = AVR8
|
||||
|
||||
# Input clock frequency.
|
||||
# This will define a symbol, F_USB, in all source code files equal to the
|
||||
# input clock frequency (before any prescaling is performed) in Hz. This value may
|
||||
# differ from F_CPU if prescaling is used on the latter, and is required as the
|
||||
# raw input clock is fed directly to the PLL sections of the AVR for high speed
|
||||
# clock generation for the USB and other AVR subsections. Do NOT tack on a 'UL'
|
||||
# at the end, this will be done automatically to create a 32-bit value in your
|
||||
# source code.
|
||||
#
|
||||
# If no clock division is performed on the input clock inside the AVR (via the
|
||||
# CPU clock adjust registers or the clock division fuses), this will be equal to F_CPU.
|
||||
F_USB = $(F_CPU)
|
||||
|
||||
# Interrupt driven control endpoint task(+60)
|
||||
OPT_DEFS += -DINTERRUPT_CONTROL_ENDPOINT
|
||||
|
||||
|
||||
# Boot Section Size in *bytes*
|
||||
# Teensy halfKay 512
|
||||
# Teensy++ halfKay 1024
|
||||
# Atmel DFU loader 4096
|
||||
# LUFA bootloader 4096
|
||||
# USBaspLoader 2048
|
||||
OPT_DEFS += -DBOOTLOADER_SIZE=512
|
||||
|
||||
|
||||
# Build Options
|
||||
# comment out to disable the options.
|
||||
#
|
||||
BOOTMAGIC_ENABLE ?= no # Virtual DIP switch configuration(+1000)
|
||||
MOUSEKEY_ENABLE ?= yes # Mouse keys(+4700)
|
||||
EXTRAKEY_ENABLE ?= yes # Audio control and System control(+450)
|
||||
CONSOLE_ENABLE ?= yes # Console for debug(+400)
|
||||
COMMAND_ENABLE ?= yes # Commands for debug and configuration
|
||||
CUSTOM_MATRIX ?= yes # Custom matrix file (taken and adapted from the ErgoDox EZ to handle custom number of columns)
|
||||
SLEEP_LED_ENABLE ?= no # Breathing sleep LED during USB suspend
|
||||
NKRO_ENABLE ?= yes # USB Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
|
||||
UNICODE_ENABLE ?= yes # Unicode
|
||||
BACKLIGHT_ENABLE ?= no # Enable keyboard backlight functionality on B7 by default
|
||||
MIDI_ENABLE ?= no # MIDI controls
|
||||
UNICODE_ENABLE ?= no # Unicode
|
||||
BLUETOOTH_ENABLE ?= no # Enable Bluetooth with the Adafruit EZ-Key HID
|
||||
AUDIO_ENABLE ?= no # Audio output on port C6
|
||||
RGBLIGHT_ENABLE = no
|
||||
API_SYSEX_ENABLE ?= no
|
||||
|
||||
#ifndef QUANTUM_DIR
|
||||
# include ../../../Makefile
|
||||
#endif
|
||||
@ -0,0 +1,208 @@
|
||||
/*************************************************************************
|
||||
* Title: I2C master library using hardware TWI interface
|
||||
* Author: Peter Fleury <pfleury@gmx.ch> http://jump.to/fleury
|
||||
* File: $Id: twimaster.c,v 1.3 2005/07/02 11:14:21 Peter Exp $
|
||||
* Software: AVR-GCC 3.4.3 / avr-libc 1.2.3
|
||||
* Target: any AVR device with hardware TWI
|
||||
* Usage: API compatible with I2C Software Library i2cmaster.h
|
||||
**************************************************************************/
|
||||
#include <inttypes.h>
|
||||
#include <compat/twi.h>
|
||||
|
||||
#include <i2cmaster.h>
|
||||
|
||||
|
||||
/* define CPU frequency in Mhz here if not defined in Makefile */
|
||||
#ifndef F_CPU
|
||||
#define F_CPU 16000000UL
|
||||
#endif
|
||||
|
||||
/* I2C clock in Hz */
|
||||
#define SCL_CLOCK 400000L
|
||||
|
||||
|
||||
/*************************************************************************
|
||||
Initialization of the I2C bus interface. Need to be called only once
|
||||
*************************************************************************/
|
||||
void i2c_init(void)
|
||||
{
|
||||
/* initialize TWI clock
|
||||
* minimal values in Bit Rate Register (TWBR) and minimal Prescaler
|
||||
* bits in the TWI Status Register should give us maximal possible
|
||||
* I2C bus speed - about 444 kHz
|
||||
*
|
||||
* for more details, see 20.5.2 in ATmega16/32 secification
|
||||
*/
|
||||
|
||||
TWSR = 0; /* no prescaler */
|
||||
TWBR = 10; /* must be >= 10 for stable operation */
|
||||
|
||||
}/* i2c_init */
|
||||
|
||||
|
||||
/*************************************************************************
|
||||
Issues a start condition and sends address and transfer direction.
|
||||
return 0 = device accessible, 1= failed to access device
|
||||
*************************************************************************/
|
||||
unsigned char i2c_start(unsigned char address)
|
||||
{
|
||||
uint8_t twst;
|
||||
|
||||
// send START condition
|
||||
TWCR = (1<<TWINT) | (1<<TWSTA) | (1<<TWEN);
|
||||
|
||||
// wait until transmission completed
|
||||
while(!(TWCR & (1<<TWINT)));
|
||||
|
||||
// check value of TWI Status Register. Mask prescaler bits.
|
||||
twst = TW_STATUS & 0xF8;
|
||||
if ( (twst != TW_START) && (twst != TW_REP_START)) return 1;
|
||||
|
||||
// send device address
|
||||
TWDR = address;
|
||||
TWCR = (1<<TWINT) | (1<<TWEN);
|
||||
|
||||
// wail until transmission completed and ACK/NACK has been received
|
||||
while(!(TWCR & (1<<TWINT)));
|
||||
|
||||
// check value of TWI Status Register. Mask prescaler bits.
|
||||
twst = TW_STATUS & 0xF8;
|
||||
if ( (twst != TW_MT_SLA_ACK) && (twst != TW_MR_SLA_ACK) ) return 1;
|
||||
|
||||
return 0;
|
||||
|
||||
}/* i2c_start */
|
||||
|
||||
|
||||
/*************************************************************************
|
||||
Issues a start condition and sends address and transfer direction.
|
||||
If device is busy, use ack polling to wait until device is ready
|
||||
|
||||
Input: address and transfer direction of I2C device
|
||||
*************************************************************************/
|
||||
void i2c_start_wait(unsigned char address)
|
||||
{
|
||||
uint8_t twst;
|
||||
|
||||
|
||||
while ( 1 )
|
||||
{
|
||||
// send START condition
|
||||
TWCR = (1<<TWINT) | (1<<TWSTA) | (1<<TWEN);
|
||||
|
||||
// wait until transmission completed
|
||||
while(!(TWCR & (1<<TWINT)));
|
||||
|
||||
// check value of TWI Status Register. Mask prescaler bits.
|
||||
twst = TW_STATUS & 0xF8;
|
||||
if ( (twst != TW_START) && (twst != TW_REP_START)) continue;
|
||||
|
||||
// send device address
|
||||
TWDR = address;
|
||||
TWCR = (1<<TWINT) | (1<<TWEN);
|
||||
|
||||
// wail until transmission completed
|
||||
while(!(TWCR & (1<<TWINT)));
|
||||
|
||||
// check value of TWI Status Register. Mask prescaler bits.
|
||||
twst = TW_STATUS & 0xF8;
|
||||
if ( (twst == TW_MT_SLA_NACK )||(twst ==TW_MR_DATA_NACK) )
|
||||
{
|
||||
/* device busy, send stop condition to terminate write operation */
|
||||
TWCR = (1<<TWINT) | (1<<TWEN) | (1<<TWSTO);
|
||||
|
||||
// wait until stop condition is executed and bus released
|
||||
while(TWCR & (1<<TWSTO));
|
||||
|
||||
continue;
|
||||
}
|
||||
//if( twst != TW_MT_SLA_ACK) return 1;
|
||||
break;
|
||||
}
|
||||
|
||||
}/* i2c_start_wait */
|
||||
|
||||
|
||||
/*************************************************************************
|
||||
Issues a repeated start condition and sends address and transfer direction
|
||||
|
||||
Input: address and transfer direction of I2C device
|
||||
|
||||
Return: 0 device accessible
|
||||
1 failed to access device
|
||||
*************************************************************************/
|
||||
unsigned char i2c_rep_start(unsigned char address)
|
||||
{
|
||||
return i2c_start( address );
|
||||
|
||||
}/* i2c_rep_start */
|
||||
|
||||
|
||||
/*************************************************************************
|
||||
Terminates the data transfer and releases the I2C bus
|
||||
*************************************************************************/
|
||||
void i2c_stop(void)
|
||||
{
|
||||
/* send stop condition */
|
||||
TWCR = (1<<TWINT) | (1<<TWEN) | (1<<TWSTO);
|
||||
|
||||
// wait until stop condition is executed and bus released
|
||||
while(TWCR & (1<<TWSTO));
|
||||
|
||||
}/* i2c_stop */
|
||||
|
||||
|
||||
/*************************************************************************
|
||||
Send one byte to I2C device
|
||||
|
||||
Input: byte to be transfered
|
||||
Return: 0 write successful
|
||||
1 write failed
|
||||
*************************************************************************/
|
||||
unsigned char i2c_write( unsigned char data )
|
||||
{
|
||||
uint8_t twst;
|
||||
|
||||
// send data to the previously addressed device
|
||||
TWDR = data;
|
||||
TWCR = (1<<TWINT) | (1<<TWEN);
|
||||
|
||||
// wait until transmission completed
|
||||
while(!(TWCR & (1<<TWINT)));
|
||||
|
||||
// check value of TWI Status Register. Mask prescaler bits
|
||||
twst = TW_STATUS & 0xF8;
|
||||
if( twst != TW_MT_DATA_ACK) return 1;
|
||||
return 0;
|
||||
|
||||
}/* i2c_write */
|
||||
|
||||
|
||||
/*************************************************************************
|
||||
Read one byte from the I2C device, request more data from device
|
||||
|
||||
Return: byte read from I2C device
|
||||
*************************************************************************/
|
||||
unsigned char i2c_readAck(void)
|
||||
{
|
||||
TWCR = (1<<TWINT) | (1<<TWEN) | (1<<TWEA);
|
||||
while(!(TWCR & (1<<TWINT)));
|
||||
|
||||
return TWDR;
|
||||
|
||||
}/* i2c_readAck */
|
||||
|
||||
|
||||
/*************************************************************************
|
||||
Read one byte from the I2C device, read is followed by a stop condition
|
||||
|
||||
Return: byte read from I2C device
|
||||
*************************************************************************/
|
||||
unsigned char i2c_readNak(void)
|
||||
{
|
||||
TWCR = (1<<TWINT) | (1<<TWEN);
|
||||
while(!(TWCR & (1<<TWINT)));
|
||||
|
||||
return TWDR;
|
||||
|
||||
}/* i2c_readNak */
|
||||
Loading…
Reference in new issue