roboforum.ru

bool AVRInSystemProg::readFuseBits( long * bits )
{
   long low, high;

   /* Use AVRISP's 4-byte universal command */
   comm->sendByte( '.' );
   comm->sendByte( 0x50 );
   comm->sendByte( 0x00 );
   comm->sendByte( 0x00 ); // Dummy.
   comm->sendByte( 0x00 ); // Dummy.
   comm->flushTX();
   
   low = comm->getByte();

   if( comm->getByte() != '\r' ) // Check return code from command.
      throw new ErrorMsg( "Low fuse byte readout failed! "
                            "Programmer did not return CR after '.'-command." );

   /* Use AVRISP's 4-byte universal command */
   comm->sendByte( '.' );
   comm->sendByte( 0x58 );
   comm->sendByte( 0x08 );
   comm->sendByte( 0x00 ); // Dummy.
   comm->sendByte( 0x00 ); // Dummy.
   comm->flushTX();
   
   high = comm->getByte();

   if( comm->getByte() != '\r' ) // Check return code from command.
      throw new ErrorMsg( "Low fuse byte readout failed! "
                            "Programmer did not return CR adter '.'-command." );

   /* Put low and high together */
   *bits = (high << 8) | low;

   return true; // Indicate supported command.
}

// ======================================================================
// Control a parallel port AVR programmer (avrdude type "bsd") via USB.
//
// Copyright (C) 2006 Dick Streefland
//
// This is free software, licensed under the terms of the GNU General
// Public License as published by the Free Software Foundation.
// ======================================================================

#include <avr/io.h>
#include "usb.h"

enum
{
   // Generic requests
   USBTINY_ECHO,      // echo test
   USBTINY_READ,      // read byte
   USBTINY_WRITE,      // write byte
   USBTINY_CLR,      // clear bit
   USBTINY_SET,      // set bit
   // Programming requests
   USBTINY_POWERUP,   // apply power (wValue:SCK-period, wIndex:RESET)
   USBTINY_POWERDOWN,   // remove power from chip
   USBTINY_SPI,      // issue SPI command (wValue:c1c0, wIndex:c3c2)
   USBTINY_POLL_BYTES,   // set poll bytes for write (wValue:p1p2)
   USBTINY_FLASH_READ,   // read flash (wIndex:address)
   USBTINY_FLASH_WRITE,   // write flash (wIndex:address, wValue:timeout)
   USBTINY_EEPROM_READ,   // read eeprom (wIndex:address)
   USBTINY_EEPROM_WRITE,   // write eeprom (wIndex:address, wValue:timeout)
   USBTINY_DDRWRITE,        // set port direction
   USBTINY_SPI1            // a single SPI command
};