//------------------------------------------------------------------------------
int __attribute__((OS_main)) main(void)
{
const int* isr = isrJump; // read array from program memory, saves copy step
for( unsigned char i=0; i<6; i+=2 )
{
boot_page_fill( i, pgm_read_word(isr++) ); // install RESET trampoline
}
commitPage( 0 );
rnaInit();
for(;;)
{
rnaPoll(); // everything else happens through the RNA bus
}
}
//------------------------------------------------------------------------------
int __attribute__((OS_main)) main(void)
{
dnaUsbInit();
enableLed();
usbCommand = ceCommandIdle;
usbRNAPacketExpected = 1;
TCCR0B = 1<<CS01 | 1<<CS00; // set 8-bit timer prescaler to div/64
TIMSK0 = 1<<TOIE0; // enable the interrupt
rnaInit();
sei();
setLedOff();
for(;;)
{
rnaPoll();
if ( rnaPacketAvail )
{
setLedOn();
rnaPacketAvail = 0;
_delay_ms( 50 );
while ( !rnaSend(usbRNATo, usbRNAPacket, usbRNAPacketExpected) )
{
_delay_ms(1);
}
setLedOff();
}
/*
if ( usbRNAPacketPos == usbRNAPacketExpected )
{
usbRNAPacketPos = 0;
if ( *usbRNAPacket == RNATypeDebugString )
{
usbRNAPacket[usbRNAPacketExpected] = 0;
usbprint( (char *)usbRNAPacket + 1, usbRNAPacketExpected );
}
}
*/
}
}
//------------------------------------------------------------------------------
int __attribute__((OS_main)) main(void)
{
DDRD = 0x0;
PORTD = 0b00000100; // turn on pullup for D2 (RNA bus)
// if the source of the reset was a watchdog timeout, indicating a software
// request of bootloader entry, disable the watchdog and enter the
// bootloader
if ( WDTCSR & (1<<WDE) )
{
MCUSR = 0;
WDTCSR |= (1<<WDCE) | (1<<WDE);
WDTCSR = 0;
}
else
{
_delay_us(50); // give state a chance to settle
for( unsigned int i=4000; i; i-- )
{
_delay_ms(1);
// pin must be HELD low, make sure spurious RNA requests do not reset us!
if ( PIND & 0b00000100 )
{
goto jumpToZero;
}
}
}
rnaInit();
for(;;)
{
rnaPoll(); // everything else happens through the RNA bus
if ( jumpToApp )
{
jumpToZero:
boot_rww_enable();
asm volatile ("ijmp" ::"z" (0)); // in with both feet...
}
}
}
