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, 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                         TCNT0  = 0;
 100
 101                         do
 102                         {
 103                                 SPI_SendByte(ReadMemCommand);
 104                                 SPI_SendByte(PollAddress >> 8);
 105                                 SPI_SendByte(PollAddress & 0xFF);
 106                         }
 107                         while ((SPI_TransferByte(0x00) != PollValue) && (TCNT0 < TARGET_BUSY_TIMEOUT_MS));
 108
 109                         if (TCNT0 >= TARGET_BUSY_TIMEOUT_MS)
 110                          ProgrammingStatus = STATUS_RDY_BSY_TOUT;
 111
 112                         break;
 113                 case PROG_MODE_WORD_READYBUSY_MASK:
 114                 case PROG_MODE_PAGED_READYBUSY_MASK:
 115                         ProgrammingStatus = V2Protocol_WaitWhileTargetBusy();
 116                         break;
 117         }
 118
 119         return ProgrammingStatus;
 120 }
 121
 122 uint8_t V2Protocol_WaitWhileTargetBusy(void)
 123 {
 124         TCNT0  = 0;
 125
 126         do
 127         {
 128                 SPI_SendByte(0xF0);
 129                 SPI_SendByte(0x00);
 130
 131                 SPI_SendByte(0x00);
 132         }
 133         while ((SPI_ReceiveByte() & 0x01) && (TCNT0 < TARGET_BUSY_TIMEOUT_MS));
 134
 135         if (TCNT0 >= TARGET_BUSY_TIMEOUT_MS)
 136           return STATUS_RDY_BSY_TOUT;
 137         else
 138           return STATUS_CMD_OK;
 139 }
 140
 141 void V2Protocol_LoadExtendedAddress(void)
 142 {
 143         SPI_SendByte(0x4D);
 144         SPI_SendByte(0x00);
 145         SPI_SendByte((CurrentAddress & 0x00FF0000) >> 16);
 146         SPI_SendByte(0x00);
 147 }