Projects/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         printf("COMMAND %d\r\n", V2Command);
  68
  69         switch (V2Command)
  70         {
  71                 case CMD_SIGN_ON:
  72                         V2Protocol_ProcessCmdSignOn();
  73                         break;
  74                 case CMD_SET_PARAMETER:
  75                         V2Protocol_ProcessCmdSetParam();
  76                         break;
  77                 case CMD_GET_PARAMETER:
  78                         V2Protocol_ProcessCmdGetParam();
  79                         break;
  80                 default:
  81                         Endpoint_ClearOUT();
  82                         Endpoint_SetEndpointDirection(ENDPOINT_DIR_IN);
  83                         Endpoint_Write_Byte(STATUS_CMD_UNKNOWN);
  84                         Endpoint_ClearIN();
  85                         break;
  86         }
  87
  88         /* Reset Endpoint direction to OUT ready for next command */
  89         Endpoint_SetEndpointDirection(ENDPOINT_DIR_OUT);
  90 }
  91
  92 static ParameterItem_t* V2Protocol_GetParameterItem(uint8_t ParamID)
  93 {
  94         for (uint8_t TableIndex = 0; TableIndex < (sizeof(ParameterTable) / sizeof(ParameterTable[0])); TableIndex++)
  95         {
  96                 if (ParamID == eeprom_read_byte(&ParameterTable[TableIndex].ParameterID))
  97                   return &ParameterTable[TableIndex];
  98         }
  99
 100         return NULL;
 101 }
 102
 103 static void V2Protocol_ProcessCmdSignOn(void)
 104 {
 105         Endpoint_ClearOUT();
 106         Endpoint_SetEndpointDirection(ENDPOINT_DIR_IN);
 107
 108         Endpoint_Write_Byte(CMD_SIGN_ON);
 109         Endpoint_Write_Byte(STATUS_CMD_OK);
 110         Endpoint_Write_Byte(PROGRAMMER_ID_LEN);
 111         Endpoint_Write_Stream_LE(PROGRAMMER_ID, PROGRAMMER_ID_LEN);
 112         Endpoint_ClearIN();
 113 }
 114
 115 static void V2Protocol_ProcessCmdSetParam(void)
 116 {
 117         uint8_t ParamID    = Endpoint_Read_Byte();
 118         uint8_t ParamValue = Endpoint_Read_Byte();
 119
 120         ParameterItem_t* ParameterItem = V2Protocol_GetParameterItem(ParamID);
 121
 122         Endpoint_ClearOUT();
 123         Endpoint_SetEndpointDirection(ENDPOINT_DIR_IN);
 124
 125         if (ParameterItem != NULL)
 126         {
 127                 eeprom_write_byte(&ParameterItem->ParameterValue, ParamValue);
 128
 129                 Endpoint_Write_Byte(CMD_SET_PARAMETER);
 130                 Endpoint_Write_Byte(STATUS_CMD_OK);
 131         }
 132         else
 133         {
 134                 Endpoint_Write_Byte(STATUS_CMD_FAILED);
 135         }
 136
 137         Endpoint_ClearIN();
 138 }
 139
 140 static void V2Protocol_ProcessCmdGetParam(void)
 141 {
 142         uint8_t ParamID    = Endpoint_Read_Byte();
 143
 144         ParameterItem_t* ParameterItem = V2Protocol_GetParameterItem(ParamID);
 145
 146         Endpoint_ClearOUT();
 147         Endpoint_SetEndpointDirection(ENDPOINT_DIR_IN);
 148
 149         if (ParameterItem != NULL)
 150         {
 151                 Endpoint_Write_Byte(CMD_GET_PARAMETER);
 152                 Endpoint_Write_Byte(STATUS_CMD_OK);
 153                 Endpoint_Write_Byte(eeprom_read_byte(&ParameterItem->ParameterValue));
 154         }
 155         else
 156         {
 157                 Endpoint_Write_Byte(STATUS_CMD_FAILED);
 158         }
 159
 160         Endpoint_ClearIN();
 161 }