uchar usbFunctionRead(uchar *data, uchar len) {
uchar i;
/* check if programmer is in correct read state */
if ((prog_state != PROG_STATE_READFLASH) && (prog_state
!= PROG_STATE_READEEPROM) && (prog_state != PROG_STATE_TPI_READ)) {
return 0xff;
}
/* fill packet TPI mode */
if(prog_state == PROG_STATE_TPI_READ)
{
tpi_read_block(prog_address, data, len);
prog_address += len;
return len;
}
/* fill packet ISP mode */
for (i = 0; i < len; i++) {
if (prog_state == PROG_STATE_READFLASH) {
data[i] = ispReadFlash(prog_address);
} else {
data[i] = ispReadEEPROM(prog_address);
}
prog_address++;
}
/* last packet? */
if (len < 8) {
prog_state = PROG_STATE_IDLE;
}
return len;
}
uchar ispFlushPage(unsigned long address, uchar pollvalue)
{
ISP_transmit(0x4C);
ISP_transmit(address >> 9);
ISP_transmit(address >> 1);
ISP_transmit(0);
if (pollvalue == 0xFF) {
TIMER_delay(5);
return 0;
} else {
// polling flash
uchar retries = 30;
TIMER_start(1);
while (retries != 0) {
if (ispReadFlash(address) != 0xFF) {
return 0;
};
if (TIMER_timeout == 0)
{
TIMER_start(1);
retries --;
}
}
return 1; // error
}
}
uchar usbFunctionRead(uchar *data, uchar len)
{
uchar i;
int c;
// check if programmer is in correct read state
if (
(prog_state != PROG_STATE_READFLASH)
&& (prog_state != PROG_STATE_READEEPROM)
&& (prog_state != STATE_READ_CDC)
)
return 0xff;
// fill packet
for (i = 0; i < len; i++)
{
if (prog_state == PROG_STATE_READFLASH)
data[i] = ispReadFlash(prog_address);
else if (prog_state == PROG_STATE_READEEPROM)
data[i] = ispReadEEPROM(prog_address);
else if (prog_state == STATE_READ_CDC)
{
c = BUF_get(&debug_buffer);
if (c == -1) break;
data[i] = c;
}
prog_address++;
}
// last packet?
if (len < 8)
prog_state = PROG_STATE_IDLE;
return i;
}
uchar ispWriteFlash(unsigned long address, uchar data, uchar pollmode)
{
ISP_transmit(0x40 | ((address & 1) << 3));
ISP_transmit(address >> 9);
ISP_transmit(address >> 1);
ISP_transmit(data);
if (pollmode == 0)
return 0;
if (data == 0x7F) {
TIMER_delay(5); // wait 4,8 ms
return 0;
} else {
// polling flash
uchar retries = 30;
TIMER_start(1);
while (retries != 0) {
if (ispReadFlash(address) != 0x7F) {
return 0;
};
if (TIMER_timeout == 0)
{
TIMER_start(1);
retries --;
}
}
return 1; // error
}
}
uint32_t flashAvr( uint8_t *data64, uint8_t *data2561, uint16_t size64, uint16_t size2561 )
{
uint32_t i ;
uint8_t *data ;
uint16_t address ;
uint16_t size ;
uint8_t *verifyData ;
ispConnect() ;
clockWait( 64 ) ; // 20mS
wdt_reset() ;
if ( ( IspStatus = ispEnterProgrammingMode() ) == 0 )
{
Signature[0] = ispReadSignature(0) ;
Signature[1] = ispReadSignature(1) ;
Signature[2] = ispReadSignature(2) ;
}
// choose file here
data = data64 ;
size = size64 ;
if ( Signature[1] == 0x98 )
{
data = data2561 ;
size = size2561 ;
}
verifyData = data ;
ispChipErase() ;
if ( Signature[1] == 0x98 )
{
ispTransmit(0x4D) ;
ispTransmit(0) ;
ispTransmit(0) ;
ispTransmit(0) ;
}
for ( address = 0 ; address < size ; address += 256 )
{
i = 256 ;
if ( address + 256 > size )
{
i = size - address ;
}
flashPage( data, address, i ) ;
data += 256 ;
wdt_reset() ;
}
for ( i = 0 ; i < 64 ; i += 1 )
{
M64Program[i] = ispReadFlash( i ) ;
}
ispDisconnect() ;
clockWait(64) ;
wdt_reset() ;
for ( i = 0 ; i < 64 ; i += 1 )
{
if ( *verifyData++ != M64Program[i] )
{
return 1 ;
}
}
return 0 ;
}