void ws_flash_read_byte(uint32_t addr, uint8_t *buf)
{
uint8_t sreg;
sreg = SREG;
cli();
eeprom_busy_wait();
_WAIT_FOR_SPM();
eeprom_busy_wait();
boot_spm_busy_wait();
_ENABLE_RWW_SECTION();
*buf = pgm_read_byte_far(addr);
boot_rww_enable();
SREG = sreg;
return;
}
void ws_flash_read_page(uint32_t addr, uint8_t *buf)
{
uint8_t sreg;
uint32_t i;
sreg = SREG;
cli();
eeprom_busy_wait();
for (i=0;i<PAGESIZE;i++)
{
_WAIT_FOR_SPM();
eeprom_busy_wait();
boot_spm_busy_wait();
_ENABLE_RWW_SECTION();
buf[i] = pgm_read_byte_far(addr+i);
}
boot_rww_enable();
SREG = sreg;
return;
}
C_TASK void main(void)
{
ADDR_T address;
unsigned int temp_int;
unsigned char val;
/* Initialization */
void (*funcptr)( void ) = 0x0000; // Set up function pointer to RESET vector.
PROGPORT |= (1<<PROG_NO); // Enable pull-up on PROG_NO line on PROGPORT.
initbootuart(); // Initialize UART.
DDRB |= _BV(PB0); //status LED
/* Branch to bootloader or application code? */
if( !(PROGPIN & (1<<PROG_NO)) ) // If PROGPIN is pulled low, enter programmingmode.
{
PORTB |= _BV(PB0); //set the status led ON
/* Main loop */
for(;;)
{
val=recchar(); // Wait for command character.
// Check autoincrement status.
if(val=='a')
{
sendchar('Y'); // Yes, we do autoincrement.
}
// Set address.
else if(val=='A') // Set address...
{ // NOTE: Flash addresses are given in words, not bytes.
address=(recchar()<<8) | recchar(); // Read address high and low byte.
sendchar('\r'); // Send OK back.
}
// Chip erase.
else if(val=='e')
{
for(address = 0; address < APP_END;address += PAGESIZE)
{ // NOTE: Here we use address as a byte-address, not word-address, for convenience.
_WAIT_FOR_SPM();
#ifdef __ICCAVR__
#pragma diag_suppress=Pe1053 // Suppress warning for conversion from long-type address to flash ptr.
#endif
_PAGE_ERASE( address );
#ifdef __ICCAVR__
#pragma diag_default=Pe1053 // Back to default.
#endif
}
sendchar('\r'); // Send OK back.
}
#ifndef REMOVE_BLOCK_SUPPORT
// Check block load support.
else if(val=='b')
{
sendchar('Y'); // Report block load supported.
sendchar((BLOCKSIZE>>8) & 0xFF); // MSB first.
sendchar(BLOCKSIZE&0xFF); // Report BLOCKSIZE (bytes).
}
// Start block load.
else if(val=='B')
