Projects/Unfinished/AVRISP/Lib/V2Protocol.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  *  V2Protocol handler, to process V2 Protocol commands used in Atmel programmer devices.
  34  */
  35
  36 #define  INCLUDE_FROM_V2PROTOCOL_C
  37 #include "V2Protocol.h"
  38
  39 ParameterItem_t ParameterTable[] EEMEM =
  40         {
  41                 { .ParameterID    = PARAM_BUILD_NUMBER_LOW,
  42                   .ParameterValue = 0x00                    },
  43                 { .ParameterID    = PARAM_BUILD_NUMBER_HIGH,
  44                   .ParameterValue = 0x00                    },
  45                 { .ParameterID    = PARAM_HW_VER,
  46                   .ParameterValue = 0x01                    },
  47                 { .ParameterID    = PARAM_SW_MAJOR,
  48                   .ParameterValue = 0x01                    },
  49                 { .ParameterID    = PARAM_SW_MINOR,
  50                   .ParameterValue = 0x00                    },
  51                 { .ParameterID    = PARAM_VTARGET,
  52                   .ParameterValue = 0x00                    },
  53                 { .ParameterID    = PARAM_SCK_DURATION,
  54                   .ParameterValue = 0x00                    },
  55                 { .ParameterID    = PARAM_RESET_POLARITY,
  56                   .ParameterValue = 0x00                    },
  57                 { .ParameterID    = PARAM_STATUS_TGT_CONN,
  58                   .ParameterValue = 0x00                    },
  59                 { .ParameterID    = PARAM_DISCHARGEDELAY,
  60                   .ParameterValue = 0x00                    },
  61         };
  62
  63 void V2Protocol_ProcessCommand(void)
  64 {
  65         uint8_t V2Command = Endpoint_Read_Byte();
  66
  67         switch (V2Command)
  68         {
  69                 case CMD_SIGN_ON:
  70                         V2Protocol_ProcessCmdSignOn();
  71                         break;
  72                 case CMD_SET_PARAMETER:
  73                 case CMD_GET_PARAMETER:
  74                         V2Protocol_ProcessCmdGetSetParam(V2Command);
  75                         break;
  76                 default:
  77                         while (Endpoint_BytesInEndpoint() == AVRISP_DATA_EPSIZE)
  78                         {
  79                                 Endpoint_ClearOUT();
  80                                 while (!(Endpoint_IsOUTReceived()));
  81                         }
  82
  83                         Endpoint_ClearOUT();
  84                         Endpoint_SetEndpointDirection(ENDPOINT_DIR_IN);
  85
  86                         Endpoint_Write_Byte(STATUS_CMD_UNKNOWN);
  87                         Endpoint_ClearIN();
  88                         break;
  89         }
  90
  91         printf("COMMAND 0x%02x\r\n", V2Command);
  92
  93         Endpoint_WaitUntilReady();
  94
  95         /* Reset Endpoint direction to OUT ready for next command */
  96         Endpoint_SetEndpointDirection(ENDPOINT_DIR_OUT);
  97 }
  98
  99 static ParameterItem_t* V2Protocol_GetParameterItem(uint8_t ParamID)
 100 {
 101         for (uint8_t TableIndex = 0; TableIndex < (sizeof(ParameterTable) / sizeof(ParameterTable[0])); TableIndex++)
 102         {
 103                 if (ParamID == eeprom_read_byte(&ParameterTable[TableIndex].ParameterID))
 104                   return &ParameterTable[TableIndex];
 105         }
 106
 107         return NULL;
 108 }
 109
 110 static void V2Protocol_ProcessCmdSignOn(void)
 111 {
 112         Endpoint_ClearOUT();
 113         Endpoint_SetEndpointDirection(ENDPOINT_DIR_IN);
 114         Endpoint_WaitUntilReady();
 115
 116         Endpoint_Write_Byte(CMD_SIGN_ON);
 117         Endpoint_Write_Byte(STATUS_CMD_OK);
 118         Endpoint_Write_Byte(PROGRAMMER_ID_LEN);
 119         Endpoint_Write_Stream_LE(PROGRAMMER_ID, PROGRAMMER_ID_LEN);
 120         Endpoint_ClearIN();
 121 }
 122
 123 static void V2Protocol_ProcessCmdGetSetParam(uint8_t V2Command)
 124 {
 125         uint8_t ParamID    = Endpoint_Read_Byte();
 126         uint8_t ParamValue = Endpoint_Read_Byte();
 127
 128         Endpoint_ClearOUT();
 129         Endpoint_SetEndpointDirection(ENDPOINT_DIR_IN);
 130         Endpoint_WaitUntilReady();
 131
 132         ParameterItem_t* ParameterItem = V2Protocol_GetParameterItem(ParamID);
 133
 134         if (ParameterItem != NULL)
 135         {
 136                 Endpoint_Write_Byte(V2Command);
 137                 Endpoint_Write_Byte(STATUS_CMD_OK);
 138
 139                 if (V2Command == CMD_SET_PARAMETER)
 140                   eeprom_write_byte(&ParameterItem->ParameterValue, ParamValue);
 141                 else
 142                   Endpoint_Write_Byte(eeprom_read_byte(&ParameterItem->ParameterValue));
 143         }
 144         else
 145         {
 146                 Endpoint_Write_Byte(STATUS_CMD_FAILED);
 147         }
 148
 149         Endpoint_ClearIN();
 150 }