firm_upgrade.h File Reference

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Functions
void	firm_upgrade_run (void)
	This function runs the upgrade process.

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Detailed Description

This file contains the feature USB host bootloader with Udisk (see AppNote AVR916).

• Compiler: IAR EWAVR and GNU GCC for AVR
• Supported devices: AT90USB1287, AT90USB1286, AT90USB647, AT90USB646

Author:

Atmel Corporation: http://www.atmel.com
Support and FAQ: http://support.atmel.no/

Definition in file firm_upgrade.h.

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Function Documentation

void firm_upgrade_run

(

void

)

This function runs the upgrade process.

//! The status of process is display on UART and writed in a status file on U-Disk.
//! 

Definition at line 111 of file firm_upgrade.c.

References St_hex_line::datas, file_close(), file_eof(), file_open(), file_seek(), firm_upgrade_displayzone(), firm_upgrade_readhexline(), firm_upgrade_searchfile(), firm_upgrade_status(), flash_lib_check(), flash_rd_byte(), flash_wr_block(), FOPEN_MODE_R, FS_SEEK_SET, MAX_DATA_LINE, nav_file_getname(), nav_getindex(), nav_gotoindex(), St_hex_line::u16_add, St_hex_line::u8_nb_data, St_hex_line::u8_type, UPGRADE_ADDR, and UPGRADE_SIZE_MAX.

{
   Fs_index sav_index;
   U8 u8_i, save_int;
   St_hex_line hex_line;
   U8 datas[MAX_DATA_LINE];
   char filename[30];

   hex_line.datas    = datas; // Init data buffer used
   hex_line.u8_type  = 0;     // Autotrize only type 0

   // Save current position to resolve it before exit routine
   sav_index = nav_getindex();
   
   printf("\n\rDislpay upgrade zone BEFORE upgrade:\n\r");
   firm_upgrade_displayzone();

   printf("Search upgrade file\n\r...\r");
   if( !firm_upgrade_searchfile( "upgrade*" ) )
   {
      firm_upgrade_status("No upgrade file");
      nav_gotoindex(&sav_index);
      return;
   }
   
   nav_file_getname( filename, 50 );
   printf("Open upgrade file \"%s\"\n\r...\r", filename );
   if( !file_open(FOPEN_MODE_R) )
   {
      firm_upgrade_status("!! Error to open upgrade file");
      nav_gotoindex(&sav_index);       // Restore previous position
      return;
   }
   
   printf("Check upgrade file\n\r...\r");
   while (!file_eof())
   { 
      // For each text line, check upgrade zone
      hex_line.u8_nb_data = MAX_DATA_LINE;
      if( !firm_upgrade_readhexline( &hex_line ) )
      {
         file_close();
         firm_upgrade_status("!! Error in HEX file format");
         nav_gotoindex(&sav_index);
         return;
      }

      if( (hex_line.u16_add                      <  UPGRADE_ADDR)
      ||  (hex_line.u16_add+hex_line.u8_nb_data) > (UPGRADE_ADDR+UPGRADE_SIZE_MAX) )
      {
         file_close();
         firm_upgrade_status("!! Upgrade zone not autorized");
         nav_gotoindex(&sav_index);
         return;
      }
   }
   
   printf("Program FLASH\n\r...\r");
   // Check bootloader
   if( !flash_lib_check() )
   {
      file_close();
      firm_upgrade_status("!! The bootloder if not loaded");
      nav_gotoindex(&sav_index);
      return;
   }
   
   file_seek(0,FS_SEEK_SET);              // Restart at beginning of file
   while (!file_eof())
   { 
      // For each text line, check upgrade zone
      hex_line.u8_nb_data = MAX_DATA_LINE;
      if( !firm_upgrade_readhexline( &hex_line ) )
      {
         file_close();
         firm_upgrade_status("!! Error in HEX file format");
         nav_gotoindex(&sav_index);
         return;
      }

      // Disabling the interrupt
      save_int=Get_interrupt_state();
      Disable_interrupt();
      // Writing the flash with a check of highest flash address 
      flash_wr_block( hex_line.datas, hex_line.u16_add, hex_line.u8_nb_data );
      // Read data in flash and check programmation with buffer
      for( u8_i=0; u8_i<hex_line.u8_nb_data; u8_i++ )
      {
         if( hex_line.datas[u8_i] != flash_rd_byte((U8 farcode*)hex_line.u16_add) )
         {
            file_close();
            firm_upgrade_status("!! Programmation in flash BAD\n\r!!! Check if the bootloader is loaded in chip.");
            nav_gotoindex(&sav_index);
            return;
         }
         hex_line.u16_add++;
      }     
      // Restore interrupt state
      if(save_int) { Enable_interrupt(); }
   }

   file_close();
   firm_upgrade_status("Upgrade successfull");
   nav_gotoindex(&sav_index);
   
   printf("Dislpay upgrade zone AFTER upgrade:\n\r");
   firm_upgrade_displayzone();
}

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