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[TOTAL_PROGRAMMING_SPEEDS] =
  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 uint8_t V2Protocol_WaitForProgComplete(uint8_t ProgrammingMode, uint16_t PollAddress, uint8_t PollValue,
  80                                        uint8_t DelayMS, uint8_t ReadMemCommand)
  81 {
  82         uint8_t ProgrammingStatus = STATUS_CMD_OK;
  83
  84         /* Determine method of Programming Complete check */
  85         switch (ProgrammingMode & ~(PROG_MODE_PAGED_WRITES_MASK | PROG_MODE_COMMIT_PAGE_MASK))
  86         {
  87                 case PROG_MODE_WORD_TIMEDELAY_MASK:
  88                 case PROG_MODE_PAGED_TIMEDELAY_MASK:
  89                         V2Protocol_DelayMS(DelayMS);
  90                         break;
  91                 case PROG_MODE_WORD_VALUE_MASK:
  92                 case PROG_MODE_PAGED_VALUE_MASK:
  93                         TCNT0 = 0;
  94
  95                         do
  96                         {
  97                                 SPI_SendByte(ReadMemCommand);
  98                                 SPI_SendByte(PollAddress >> 8);
  99                                 SPI_SendByte(PollAddress & 0xFF);
 100                         }
 101                         while ((SPI_TransferByte(0x00) != PollValue) && (TCNT0 < TARGET_BUSY_TIMEOUT_MS));
 102
 103                         if (TCNT0 >= TARGET_BUSY_TIMEOUT_MS)
 104                          ProgrammingStatus = STATUS_RDY_BSY_TOUT;
 105
 106                         break;
 107                 case PROG_MODE_WORD_READYBUSY_MASK:
 108                 case PROG_MODE_PAGED_READYBUSY_MASK:
 109                         ProgrammingStatus = V2Protocol_WaitWhileTargetBusy();
 110                         break;
 111         }
 112
 113         return ProgrammingStatus;
 114 }
 115
 116 uint8_t V2Protocol_WaitWhileTargetBusy(void)
 117 {
 118         TCNT0 = 0;
 119
 120         do
 121         {
 122                 SPI_SendByte(0xF0);
 123                 SPI_SendByte(0x00);
 124
 125                 SPI_SendByte(0x00);
 126         }
 127         while ((SPI_ReceiveByte() & 0x01) && (TCNT0 < TARGET_BUSY_TIMEOUT_MS));
 128
 129         if (TCNT0 >= TARGET_BUSY_TIMEOUT_MS)
 130           return STATUS_RDY_BSY_TOUT;
 131         else
 132           return STATUS_CMD_OK;
 133 }
 134
 135 void V2Protocol_LoadExtendedAddress(void)
 136 {
 137         SPI_SendByte(0x4D);
 138         SPI_SendByte(0x00);
 139         SPI_SendByte((CurrentAddress & 0x00FF0000) >> 16);
 140         SPI_SendByte(0x00);
 141 }