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144 lines
4.6 KiB
144 lines
4.6 KiB
/*
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LUFA Library
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Copyright (C) Dean Camera, 2012.
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dean [at] fourwalledcubicle [dot] com
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www.lufa-lib.org
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*/
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/*
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Copyright 2012 Dean Camera (dean [at] fourwalledcubicle [dot] com)
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Permission to use, copy, modify, distribute, and sell this
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software and its documentation for any purpose is hereby granted
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without fee, provided that the above copyright notice appear in
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all copies and that both that the copyright notice and this
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permission notice and warranty disclaimer appear in supporting
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documentation, and that the name of the author not be used in
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advertising or publicity pertaining to distribution of the
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software without specific, written prior permission.
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The author disclaim all warranties with regard to this
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software, including all implied warranties of merchantability
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and fitness. In no event shall the author be liable for any
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special, indirect or consequential damages or any damages
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whatsoever resulting from loss of use, data or profits, whether
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in an action of contract, negligence or other tortious action,
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arising out of or in connection with the use or performance of
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this software.
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*/
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/** \file
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*
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* Header file for ISPTarget.c.
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*/
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#ifndef _ISP_TARGET_
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#define _ISP_TARGET_
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/* Includes: */
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#include <avr/io.h>
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#include <avr/pgmspace.h>
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#include <util/delay.h>
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#include <LUFA/Drivers/USB/USB.h>
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#include <LUFA/Drivers/Peripheral/SPI.h>
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#include "../V2ProtocolParams.h"
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/* Preprocessor Checks: */
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#if ((BOARD == BOARD_XPLAIN) || (BOARD == BOARD_XPLAIN_REV1))
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#undef ENABLE_ISP_PROTOCOL
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#if !defined(ENABLE_XPROG_PROTOCOL)
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#define ENABLE_XPROG_PROTOCOL
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#endif
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#endif
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/* Macros: */
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/** Low level device command to issue an extended FLASH address, for devices with over 128KB of FLASH. */
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#define LOAD_EXTENDED_ADDRESS_CMD 0x4D
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/** Macro to convert an ISP frequency to a number of timer clock cycles for the software SPI driver. */
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#define TIMER_COMP(freq) (((F_CPU / 8) / 2 / freq) - 1)
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/** ISP rescue clock speed in Hz, for clocking targets with incorrectly set fuses. */
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#define ISP_RESCUE_CLOCK_SPEED 4000000
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/* External Variables: */
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extern bool HardwareSPIMode;
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/* Function Prototypes: */
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void ISPTarget_EnableTargetISP(void);
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void ISPTarget_DisableTargetISP(void);
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void ISPTarget_ConfigureRescueClock(void);
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void ISPTarget_ConfigureSoftwareSPI(const uint8_t SCKDuration);
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uint8_t ISPTarget_TransferSoftSPIByte(const uint8_t Byte);
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void ISPTarget_ChangeTargetResetLine(const bool ResetTarget);
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uint8_t ISPTarget_WaitWhileTargetBusy(void);
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void ISPTarget_LoadExtendedAddress(void);
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uint8_t ISPTarget_WaitForProgComplete(const uint8_t ProgrammingMode,
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const uint16_t PollAddress,
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const uint8_t PollValue,
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const uint8_t DelayMS,
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const uint8_t ReadMemCommand);
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/* Inline Functions: */
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/** Sends a byte of ISP data to the attached target, using the appropriate SPI hardware or
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* software routines depending on the selected ISP speed.
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*
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* \param[in] Byte Byte of data to send to the attached target
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*/
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static inline void ISPTarget_SendByte(const uint8_t Byte)
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{
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if (HardwareSPIMode)
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SPI_SendByte(Byte);
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else
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ISPTarget_TransferSoftSPIByte(Byte);
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}
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/** Receives a byte of ISP data from the attached target, using the appropriate
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* SPI hardware or software routines depending on the selected ISP speed.
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*
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* \return Received byte of data from the attached target
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*/
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static inline uint8_t ISPTarget_ReceiveByte(void)
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{
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#if !defined(INVERTED_ISP_MISO)
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if (HardwareSPIMode)
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return SPI_ReceiveByte();
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else
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return ISPTarget_TransferSoftSPIByte(0x00);
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#else
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if (HardwareSPIMode)
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return ~SPI_ReceiveByte();
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else
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return ~ISPTarget_TransferSoftSPIByte(0x00);
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#endif
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}
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/** Sends and receives a byte of ISP data to and from the attached target, using the
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* appropriate SPI hardware or software routines depending on the selected ISP speed.
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*
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* \param[in] Byte Byte of data to send to the attached target
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*
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* \return Received byte of data from the attached target
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*/
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static inline uint8_t ISPTarget_TransferByte(const uint8_t Byte)
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{
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#if !defined(INVERTED_ISP_MISO)
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if (HardwareSPIMode)
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return SPI_TransferByte(Byte);
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else
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return ISPTarget_TransferSoftSPIByte(Byte);
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#else
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if (HardwareSPIMode)
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return ~SPI_TransferByte(Byte);
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else
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return ~ISPTarget_TransferSoftSPIByte(Byte);
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#endif
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}
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#endif
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