int main() {
unsigned int i=0;
unsigned int num_pages;
// Initial state: flash is insactive, and the big guy just pulled down the
// MISO pin.
last_f = 1;
if (READ_MISO_PIN())
last_b = 0;
else
last_b = 1;
if (last_b == 0) {
CLR_BIG_GUY_RESET_PIN();
MAKE_BIG_GUY_RESET_OUTPUT();
spi_init();
CLR_SCK_PIN();
MAKE_BIG_GUY_RESET_OUTPUT();
pulse_flash_cs();
wait_ms(20);
// read the program legth
num_pages = read_params();
//num_pages=575;
num_pages += 0xff;
num_pages >>= 8;
error_code(num_pages);
if (program_enable()) {
program_erase();
} else {
error_code(0x10);
hibernate();
}
// wait a little bit
wait_ms(120);
pulse_flash_cs();
// pulse the reset pin
//wait_ms(20);
// upload the program
if (program_enable()) {
for (i=0; i < num_pages; i++) {
program_page(i);
wait_ms(56);
}
} else {
error_code(0x20);
}
}
/*---------------------------------------------------------------------------*/
int
xmem_pwrite(const void *_buf, int size, unsigned long addr)
{
const unsigned char *p = _buf;
const unsigned long end = addr + size;
unsigned long i, next_page;
ENERGEST_ON(ENERGEST_TYPE_FLASH_WRITE);
for(i = addr; i < end;) {
next_page = (i | 0xff) + 1;
if(next_page > end) {
next_page = end;
}
p = program_page(i, p, next_page - i);
i = next_page;
}
ENERGEST_OFF(ENERGEST_TYPE_FLASH_WRITE);
return size;
}
void avrisp(int ReceivedByte){
// is pmode active?
if (ram.isp.pmode) LEDs_TurnOnLEDs(LEDS_PMODE);
else LEDs_TurnOffLEDs(LEDS_PMODE);
// is there an error?
if (ram.isp.error) LEDs_TurnOnLEDs(LEDS_ERR);
else LEDs_TurnOffLEDs(LEDS_ERR);
// read in bytes from the CDC interface
if (!(ReceivedByte < 0)){
switch (ReceivedByte) {
case STK_GET_SYNC:
ram.isp.error = 0;
replyOK();
break;
case STK_GET_SIGNON:
if (getch() == CRC_EOP) {
sendCDCbyte(STK_INSYNC);
sendCDCbyte('A');
sendCDCbyte('V');
sendCDCbyte('R');
sendCDCbyte(' ');
sendCDCbyte('I');
sendCDCbyte('S');
sendCDCbyte('P');
sendCDCbyte(STK_OK);
}
break;
case STK_GET_PARM:
get_parameters(getch());
break;
case STK_SET_PARM:
set_parameters();
replyOK();
break;
case STK_SET_PARM_EXT: // extended parameters - ignore for now
fill(5);
replyOK();
break;
case STK_PMODE_START:
start_pmode();
replyOK();
break;
case STK_SET_ADDR:
ram.isp._addr = getch();
ram.isp._addr += 256 * getch();
replyOK();
break;
case STK_PROG_FLASH:
//uint8_t low = getch();
getch();
//uint8_t high = getch();
getch();
replyOK();
break;
case STK_PROG_DATA:
//uint8_t data = getch();
getch();
replyOK();
break;
case STK_PROG_PAGE:
program_page();
break;
case STK_READ_PAGE:
read_page();
break;
case STK_UNIVERSAL:
universal();
break;
case STK_PMODE_END:
ram.isp.error = 0;
end_pmode();
replyOK();
break;
case STK_READ_SIGN:
read_signature();
break;
// expecting a command, not CRC_EOP
// this is how we can get back in sync
case CRC_EOP:
ram.isp.error++;
sendCDCbyte(STK_NOSYNC);
break;
// anything else we will return STK_UNKNOWN
default:
ram.isp.error++;
if (CRC_EOP == getch())
sendCDCbyte(STK_UNKNOWN);
else
sendCDCbyte(STK_NOSYNC);
}
}
}
