Projects/Incomplete/AVRISP/Lib/V2ProtocolTarget.c

   1 /*
   2              LUFA Library
   3      Copyright (C) Dean Camera, 2009.
   4
   5   dean [at] fourwalledcubicle [dot] com
   6       www.fourwalledcubicle.com
   7 */
   8
   9 /*
  10   Copyright 2009  Dean Camera (dean [at] fourwalledcubicle [dot] com)
  11
  12   Permission to use, copy, modify, and distribute this software
  13   and its documentation for any purpose and without fee is hereby
  14   granted, provided that the above copyright notice appear in all
  15   copies and that both that the copyright notice and this
  16   permission notice and warranty disclaimer appear in supporting
  17   documentation, and that the name of the author not be used in
  18   advertising or publicity pertaining to distribution of the
  19   software without specific, written prior permission.
  20
  21   The author disclaim all warranties with regard to this
  22   software, including all implied warranties of merchantability
  23   and fitness.  In no event shall the author be liable for any
  24   special, indirect or consequential damages or any damages
  25   whatsoever resulting from loss of use, data or profits, whether
  26   in an action of contract, negligence or other tortious action,
  27   arising out of or in connection with the use or performance of
  28   this software.
  29 */
  30
  31 /** \file
  32  *
  33  *  Target-related functions for the V2 Protocol decoder.
  34  */
  35
  36 #include "V2ProtocolTarget.h"
  37
  38 /** Current memory address for FLASH/EEPROM memory read/write commands */
  39 uint32_t CurrentAddress;
  40
  41 uint8_t V2Protocol_GetSPIPrescalerMask(void)
  42 {
  43         static const uint8_t SPIMaskFromSCKDuration[] =
  44         {
  45                 #if (F_CPU == 8000000)
  46                 SPI_SPEED_FCPU_DIV_2,
  47                 #endif
  48                 SPI_SPEED_FCPU_DIV_2, SPI_SPEED_FCPU_DIV_4, SPI_SPEED_FCPU_DIV_8,
  49                 SPI_SPEED_FCPU_DIV_16, SPI_SPEED_FCPU_DIV_32, SPI_SPEED_FCPU_DIV_64
  50                 #if (F_CPU == 16000000)
  51                 , SPI_SPEED_FCPU_DIV_128
  52                 #endif
  53         };
  54
  55         uint8_t SCKDuration = V2Params_GetParameterValue(PARAM_SCK_DURATION);
  56
  57         if (SCKDuration >= sizeof(SPIMaskFromSCKDuration))
  58           SCKDuration = (sizeof(SPIMaskFromSCKDuration) - 1);
  59
  60         return SPIMaskFromSCKDuration[SCKDuration];
  61 }
  62
  63 void V2Protocol_ChangeTargetResetLine(bool ResetTarget)
  64 {
  65         if (ResetTarget)
  66         {
  67                 RESET_LINE_DDR  |= RESET_LINE_MASK;
  68
  69                 if (!(V2Params_GetParameterValue(PARAM_RESET_POLARITY)))
  70                   RESET_LINE_PORT |= RESET_LINE_MASK;
  71         }
  72         else
  73         {
  74                 RESET_LINE_PORT &= ~RESET_LINE_MASK;
  75                 RESET_LINE_DDR  &= ~RESET_LINE_MASK;
  76         }
  77 }
  78
  79 void V2Protocol_DelayMS(uint8_t MS)
  80 {
  81         TCNT0  = 0;
  82         while (TCNT0 < MS);
  83 }
  84
  85 uint8_t V2Protocol_WaitForProgComplete(uint8_t ProgrammingMode, uint16_t PollAddress, uint8_t PollValue,
  86                                        uint8_t DelayMS, bool IsFlashMemory, uint8_t ReadMemCommand)
  87 {
  88         uint8_t ProgrammingStatus = STATUS_CMD_OK;
  89
  90         /* Determine method of Programming Complete check */
  91         switch (ProgrammingMode & ~(PROG_MODE_PAGED_WRITES_MASK | PROG_MODE_COMMIT_PAGE_MASK))
  92         {
  93                 case PROG_MODE_WORD_TIMEDELAY_MASK:
  94                 case PROG_MODE_PAGED_TIMEDELAY_MASK:
  95                         V2Protocol_DelayMS(DelayMS);
  96                         break;
  97                 case PROG_MODE_WORD_VALUE_MASK:
  98                 case PROG_MODE_PAGED_VALUE_MASK:
  99                         if (IsFlashMemory && (PollAddress & 0x01))
 100                         {
 101                                 ReadMemCommand |= READ_WRITE_ODD_BYTE_MASK;
 102                                 PollAddress >>= 1;
 103                         }
 104
 105                         TCNT0  = 0;
 106
 107                         do
 108                         {
 109                                 SPI_SendByte(ReadMemCommand);
 110                                 SPI_SendByte(PollAddress >> 8);
 111                                 SPI_SendByte(PollAddress & 0xFF);
 112                         }
 113                         while ((SPI_TransferByte(0x00) != PollValue) && (TCNT0 < TARGET_BUSY_TIMEOUT_MS));
 114
 115                         if (TCNT0 >= TARGET_BUSY_TIMEOUT_MS)
 116                          ProgrammingStatus = STATUS_RDY_BSY_TOUT;
 117
 118                         break;
 119                 case PROG_MODE_WORD_READYBUSY_MASK:
 120                 case PROG_MODE_PAGED_READYBUSY_MASK:
 121                         ProgrammingStatus = V2Protocol_WaitWhileTargetBusy();
 122         }
 123
 124         return ProgrammingStatus;
 125 }
 126
 127 uint8_t V2Protocol_WaitWhileTargetBusy(void)
 128 {
 129         uint8_t ResponseByte;
 130
 131         TCNT0  = 0;
 132
 133         do
 134         {
 135                 SPI_SendByte(0xF0);
 136                 SPI_SendByte(0x00);
 137
 138                 SPI_SendByte(0x00);
 139                 ResponseByte = SPI_ReceiveByte();
 140         }
 141         while ((ResponseByte & 0x01) && (TCNT0 < TARGET_BUSY_TIMEOUT_MS));
 142
 143         if (TCNT0 >= TARGET_BUSY_TIMEOUT_MS)
 144           return STATUS_RDY_BSY_TOUT;
 145         else
 146           return STATUS_CMD_OK;
 147 }
 148
 149 void V2Protocol_LoadExtendedAddress(void)
 150 {
 151         SPI_SendByte(0x4D);
 152         SPI_SendByte(0x00);
 153         SPI_SendByte((CurrentAddress & 0x00FF0000) >> 16);
 154         SPI_SendByte(0x00);
 155 }