From 271be037b736d66a7b7e0c4d5d30c5a24025277f Mon Sep 17 00:00:00 2001 From: Dean Camera Date: Tue, 25 Aug 2009 13:21:19 +0000 Subject: Partial Commit: Move AVRISP project out of the Projects\Incomplete directory. --- Projects/AVRISP/Lib/V2ProtocolTarget.c | 183 +++++++++++++++++++++++++++++++++ 1 file changed, 183 insertions(+) create mode 100644 Projects/AVRISP/Lib/V2ProtocolTarget.c (limited to 'Projects/AVRISP/Lib/V2ProtocolTarget.c') diff --git a/Projects/AVRISP/Lib/V2ProtocolTarget.c b/Projects/AVRISP/Lib/V2ProtocolTarget.c new file mode 100644 index 0000000000..a39c5e96d1 --- /dev/null +++ b/Projects/AVRISP/Lib/V2ProtocolTarget.c @@ -0,0 +1,183 @@ +/* + LUFA Library + Copyright (C) Dean Camera, 2009. + + dean [at] fourwalledcubicle [dot] com + www.fourwalledcubicle.com +*/ + +/* + Copyright 2009 Dean Camera (dean [at] fourwalledcubicle [dot] com) + + Permission to use, copy, modify, and distribute this software + and its documentation for any purpose and without fee is hereby + granted, provided that the above copyright notice appear in all + copies and that both that the copyright notice and this + permission notice and warranty disclaimer appear in supporting + documentation, and that the name of the author not be used in + advertising or publicity pertaining to distribution of the + software without specific, written prior permission. + + The author disclaim all warranties with regard to this + software, including all implied warranties of merchantability + and fitness. In no event shall the author be liable for any + special, indirect or consequential damages or any damages + whatsoever resulting from loss of use, data or profits, whether + in an action of contract, negligence or other tortious action, + arising out of or in connection with the use or performance of + this software. +*/ + +/** \file + * + * Target-related functions for the V2 Protocol decoder. + */ + +#include "V2ProtocolTarget.h" + +/** Current memory address for FLASH/EEPROM memory read/write commands */ +uint32_t CurrentAddress; + +/** Converts the given AVR Studio SCK duration parameter (set by a SET PARAM command from the host) to the nearest + * possible SPI clock prescaler mask for passing to the SPI_Init() routine. + * + * \return Nearest SPI prescaler mask for the given SCK frequency + */ +uint8_t V2Protocol_GetSPIPrescalerMask(void) +{ + static const uint8_t SPIMaskFromSCKDuration[TOTAL_PROGRAMMING_SPEEDS] = + { + #if (F_CPU == 8000000) + SPI_SPEED_FCPU_DIV_2, // AVRStudio = 8MHz SPI, Actual = 4MHz SPI + SPI_SPEED_FCPU_DIV_2, // AVRStudio = 4MHz SPI, Actual = 4MHz SPI + SPI_SPEED_FCPU_DIV_4, // AVRStudio = 2MHz SPI, Actual = 2MHz SPI + SPI_SPEED_FCPU_DIV_8, // AVRStudio = 1MHz SPI, Actual = 1MHz SPI + SPI_SPEED_FCPU_DIV_16, // AVRStudio = 500KHz SPI, Actual = 500KHz SPI + SPI_SPEED_FCPU_DIV_32, // AVRStudio = 250KHz SPI, Actual = 250KHz SPI + SPI_SPEED_FCPU_DIV_64 // AVRStudio = 125KHz SPI, Actual = 125KHz SPI + #if (F_CPU == 16000000) + SPI_SPEED_FCPU_DIV_2, // AVRStudio = 8MHz SPI, Actual = 8MHz SPI + SPI_SPEED_FCPU_DIV_4, // AVRStudio = 4MHz SPI, Actual = 4MHz SPI + SPI_SPEED_FCPU_DIV_8, // AVRStudio = 2MHz SPI, Actual = 2MHz SPI + SPI_SPEED_FCPU_DIV_16, // AVRStudio = 1MHz SPI, Actual = 1MHz SPI + SPI_SPEED_FCPU_DIV_32, // AVRStudio = 500KHz SPI, Actual = 500KHz SPI + SPI_SPEED_FCPU_DIV_64, // AVRStudio = 250KHz SPI, Actual = 250KHz SPI + SPI_SPEED_FCPU_DIV_128 // AVRStudio = 125KHz SPI, Actual = 125KHz SPI + #else + #error No SPI prescaler masks for chosen F_CPU speed. + #endif + }; + + uint8_t SCKDuration = V2Params_GetParameterValue(PARAM_SCK_DURATION); + + if (SCKDuration >= sizeof(SPIMaskFromSCKDuration)) + SCKDuration = (sizeof(SPIMaskFromSCKDuration) - 1); + + return SPIMaskFromSCKDuration[SCKDuration]; +} + +/** Asserts or deasserts the target's reset line, using the correct polarity as set by the host using a SET PARAM command. + * When not asserted, the line is tristated so as not to intefere with normal device operation. + * + * \param ResetTarget Boolean true when the target should be held in reset, false otherwise + */ +void V2Protocol_ChangeTargetResetLine(bool ResetTarget) +{ + if (ResetTarget) + { + RESET_LINE_DDR |= RESET_LINE_MASK; + + if (!(V2Params_GetParameterValue(PARAM_RESET_POLARITY))) + RESET_LINE_PORT |= RESET_LINE_MASK; + } + else + { + RESET_LINE_PORT &= ~RESET_LINE_MASK; + RESET_LINE_DDR &= ~RESET_LINE_MASK; + } +} + +/** Waits until the last issued target memory programming command has completed, via the check mode given and using + * the given parameters. + * + * \param ProgrammingMode Programming mode used and completion check to use, a mask of PROG_MODE_* constants + * \param PollAddress Memory address to poll for completion if polling check mode used + * \param PollValue Poll value to check against if polling check mode used + * \param DelayMS Milliseconds to delay before returning if delay check mode used + * \param ReadMemCommand Device low-level READ MEMORY command to send if value check mode used + * + * \return V2 Protocol status \ref STATUS_CMD_OK if the no timeout occurred, \ref STATUS_RDY_BSY_TOUT or + * \ref STATUS_CMD_TOUT otherwise + */ +uint8_t V2Protocol_WaitForProgComplete(uint8_t ProgrammingMode, uint16_t PollAddress, uint8_t PollValue, + uint8_t DelayMS, uint8_t ReadMemCommand) +{ + uint8_t ProgrammingStatus = STATUS_CMD_OK; + + /* Determine method of Programming Complete check */ + switch (ProgrammingMode & ~(PROG_MODE_PAGED_WRITES_MASK | PROG_MODE_COMMIT_PAGE_MASK)) + { + case PROG_MODE_WORD_TIMEDELAY_MASK: + case PROG_MODE_PAGED_TIMEDELAY_MASK: + V2Protocol_DelayMS(DelayMS); + break; + case PROG_MODE_WORD_VALUE_MASK: + case PROG_MODE_PAGED_VALUE_MASK: + TCNT0 = 0; + + do + { + SPI_SendByte(ReadMemCommand); + SPI_SendByte(PollAddress >> 8); + SPI_SendByte(PollAddress & 0xFF); + } + while ((SPI_TransferByte(0x00) != PollValue) && (TCNT0 < TARGET_BUSY_TIMEOUT_MS)); + + if (TCNT0 >= TARGET_BUSY_TIMEOUT_MS) + ProgrammingStatus = STATUS_CMD_TOUT; + + break; + case PROG_MODE_WORD_READYBUSY_MASK: + case PROG_MODE_PAGED_READYBUSY_MASK: + ProgrammingStatus = V2Protocol_WaitWhileTargetBusy(); + break; + } + + return ProgrammingStatus; +} + +/** Waits until the target has completed the last operation, by continuously polling the device's + * BUSY flag until it is cleared, or until the \ref TARGET_BUSY_TIMEOUT_MS timeout period has expired. + * + * \return V2 Protocol status \ref STATUS_CMD_OK if the no timeout occurred, \ref STATUS_RDY_BSY_TOUT otherwise + */ +uint8_t V2Protocol_WaitWhileTargetBusy(void) +{ + TCNT0 = 0; + + do + { + SPI_SendByte(0xF0); + SPI_SendByte(0x00); + + SPI_SendByte(0x00); + } + while ((SPI_ReceiveByte() & 0x01) && (TCNT0 < TARGET_BUSY_TIMEOUT_MS)); + + if (TCNT0 >= TARGET_BUSY_TIMEOUT_MS) + return STATUS_RDY_BSY_TOUT; + else + return STATUS_CMD_OK; +} + +/** Sends a low-level LOAD EXTENDED ADDRESS command to the target, for addressing of memory beyond the + * 64KB boundary. This sends the command with the correct address as indicated by the current address + * pointer variable set by the host when a SET ADDRESS command is issued. + */ +void V2Protocol_LoadExtendedAddress(void) +{ + SPI_SendByte(0x4D); + SPI_SendByte(0x00); + SPI_SendByte((CurrentAddress & 0x00FF0000) >> 16); + SPI_SendByte(0x00); +} -- cgit v1.2.3