From 7e74bd3ea2f8de6c6a78fc8e2527c806b2dd8476 Mon Sep 17 00:00:00 2001 From: Dean Camera Date: Sun, 23 Aug 2009 10:17:13 +0000 Subject: Moved out target-related V2 protocol commands into a seperate file for the AVRISP project. Added Load Extended Command functionality to the LOAD ADDRESS V2 Protocol command handler for devices with more than 64KB of memory. --- Projects/Incomplete/AVRISP/Lib/V2ProtocolTarget.c | 116 ++++++++++++++++++++++ 1 file changed, 116 insertions(+) create mode 100644 Projects/Incomplete/AVRISP/Lib/V2ProtocolTarget.c (limited to 'Projects/Incomplete/AVRISP/Lib/V2ProtocolTarget.c') diff --git a/Projects/Incomplete/AVRISP/Lib/V2ProtocolTarget.c b/Projects/Incomplete/AVRISP/Lib/V2ProtocolTarget.c new file mode 100644 index 0000000000..7bcf0bea42 --- /dev/null +++ b/Projects/Incomplete/AVRISP/Lib/V2ProtocolTarget.c @@ -0,0 +1,116 @@ +/* + 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; + +/** Table of masks for SPI_Init() from a given PARAM_SCK_DURATION value */ +static const uint8_t SPIMaskFromSCKDuration[] = + { + #if (F_CPU == 8000000) + SPI_SPEED_FCPU_DIV_2, + #endif + SPI_SPEED_FCPU_DIV_2, SPI_SPEED_FCPU_DIV_4, SPI_SPEED_FCPU_DIV_8, + SPI_SPEED_FCPU_DIV_16, SPI_SPEED_FCPU_DIV_32, SPI_SPEED_FCPU_DIV_64 + #if (F_CPU == 16000000) + , SPI_SPEED_FCPU_DIV_128 + #endif + }; + + +uint8_t V2Protocol_GetSPIPrescalerMask(void) +{ + uint8_t SCKDuration = V2Params_GetParameterValue(PARAM_SCK_DURATION); + + if (SCKDuration >= sizeof(SPIMaskFromSCKDuration)) + SCKDuration = (sizeof(SPIMaskFromSCKDuration) - 1); + + return SPIMaskFromSCKDuration[SCKDuration]; +} + +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; + } +} + +void V2Protocol_DelayMS(uint8_t MS) +{ + while (MS--) + _delay_ms(1); +} + +uint8_t V2Protocol_WaitWhileTargetBusy(void) +{ + uint8_t TimeoutMS = TARGET_BUSY_TIMEOUT_MS; + uint8_t ResponseByte; + + do + { + V2Protocol_DelayMS(1); + + SPI_SendByte(0xF0); + SPI_SendByte(0x00); + + SPI_SendByte(0x00); + ResponseByte = SPI_ReceiveByte(); + } + while ((ResponseByte & 0x01) && (TimeoutMS--)); + + if (!(TimeoutMS)) + return STATUS_CMD_TOUT; + else + return STATUS_CMD_OK; +} + +void V2Protocol_LoadExtendedAddress(void) +{ + SPI_SendByte(0x4D); + SPI_SendByte(0x00); + SPI_SendByte((CurrentAddress & 0x00FF0000) >> 16); + SPI_SendByte(0x00); +} -- cgit v1.2.3