project/commands/cmd_i2ceeprom_write.c

   1 /**************************************************************************/
   2 /*!
   3     @file     cmd_i2ceeprom_write.c
   4     @author   K. Townsend (microBuilder.eu)
   5
   6     @brief    Code to execute for cmd_i2ceeprom_write in the 'core/cmd'
   7               command-line interpretter.
   8
   9     @section LICENSE
  10
  11     Software License Agreement (BSD License)
  12
  13     Copyright (c) 2010, microBuilder SARL
  14     All rights reserved.
  15
  16     Redistribution and use in source and binary forms, with or without
  17     modification, are permitted provided that the following conditions are met:
  18     1. Redistributions of source code must retain the above copyright
  19     notice, this list of conditions and the following disclaimer.
  20     2. Redistributions in binary form must reproduce the above copyright
  21     notice, this list of conditions and the following disclaimer in the
  22     documentation and/or other materials provided with the distribution.
  23     3. Neither the name of the copyright holders nor the
  24     names of its contributors may be used to endorse or promote products
  25     derived from this software without specific prior written permission.
  26
  27     THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ''AS IS'' AND ANY
  28     EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  29     WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  30     DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE FOR ANY
  31     DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  32     (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  33     LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  34     ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  35     (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  36     SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  37 */
  38 /**************************************************************************/
  39 #include <stdio.h>
  40
  41 #include "projectconfig.h"
  42 #include "core/cmd/cmd.h"
  43 #include "project/commands.h"       // Generic helper functions
  44
  45 #ifdef CFG_I2CEEPROM
  46   #include "drivers/eeprom/eeprom.h"
  47
  48 /**************************************************************************/
  49 /*!
  50     Writes a single byte at the supplied EEPROM address
  51 */
  52 /**************************************************************************/
  53 void cmd_i2ceeprom_write(uint8_t argc, char **argv)
  54 {
  55   uint16_t addr;
  56   uint8_t val;
  57
  58   // Try to convert supplied address to an integer
  59   int32_t addr32;
  60   getNumber (argv[0], &addr32);
  61
  62   // Check for invalid values (getNumber may complain about this as well)
  63   if (addr32 < 0 || eepromCheckAddress(addr32))
  64   {
  65     printf("Address out of range %s", CFG_PRINTF_NEWLINE);
  66     return;
  67   }
  68
  69   // Address seems to be OK
  70   addr = (uint16_t)addr32;
  71
  72   // Make sure this isn't in the reserved system config space
  73   if (addr <= CFG_EEPROM_RESERVED)
  74   {
  75     printf("ERROR: Reserved address (0x%04X-0x%04X)%s", 0, CFG_EEPROM_RESERVED, CFG_PRINTF_NEWLINE);
  76     return;
  77   }
  78
  79   // Try to convert supplied data to an integer
  80   int32_t val32;
  81   getNumber (argv[1], &val32);
  82
  83   // Check for invalid values (getNumber may complain about this as well)
  84   if (val32 < 0 || val32 > 0xFF)
  85   {
  86     printf("Invalid Data: 0-255 or 0x00-0xFF required.%s", CFG_PRINTF_NEWLINE);
  87     return;
  88   }
  89
  90   // Data seems to be OK
  91   val = (uint8_t)val32;
  92
  93   // Write data at supplied address
  94   eepromWriteU8(addr, val);
  95
  96   // Write successful
  97   printf("0x%02X written at 0x%04X%s", val, addr, CFG_PRINTF_NEWLINE);
  98 }
  99
 100 #endif