__attribute__((noreturn)) void main(void){
cli();
//set-up serial communications
DDRD=28;//3 serial pins on d.2 to d.4 d.5 to d.7 contain msbs for flash data d.0 to d.4 is in port C
DDRB=62;//serial clocks (B.1 SHCP) (B.2 Latch) (B.3 CE#) (B.4 OE#) (B.5 WE#)
UBRR0H=0;
UBRR0L=3;//set to 0.5M baud
UCSR0A|=2;//double speed aysnc
UCSR0B = (1<<RXEN0)|(1<<TXEN0);//Enable receiver and transmitter
UCSR0C=6;//async 1 stop bit 8bit char no parity bits
_delay_ms(50);
StringPgm(PSTR("RDY"));
USART_Receive();//wait for handshake
char mode = USART_Receive();//wait for mode
StringPgm(PSTR("RDY"));
serialWrB(readId(0));
uint8_t cap=readId(1);
serialWrB(cap);
__uint24 capacity=524288L;
switch(cap){
case 0xB5:
capacity=131072L;
case 0xB6:
capacity=262144L;
break;
}
if(mode=='W'){
chipErase();
serialWrB('D');
verifyF(capacity);
__uint24 x;
for (x=0;x<capacity;++x){
pgmB(x,USART_Receive());
serialWrB(readB(x));
}
}else if(mode=='R')
ReadChip(capacity);
while(1);
}
static void captureImg(uint16_t wg,uint16_t hg){
uint16_t lg2;
#ifdef useQvga
uint8_t buf[640];
#elif defined(useQqvga)
uint8_t buf[320];
#endif
StringPgm(PSTR("RDY"));
//Wait for vsync it is on pin 3 (counting from 0) portD
while(!(PIND&8));//wait for high
while((PIND&8));//wait for low
#ifdef useVga
while(hg--){
lg2=wg;
while(lg2--){
while((PIND&4));//wait for low
UDR0=(PINC&15)|(PIND&240);
while(!(PIND&4));//wait for high
}
}
#elif defined(useQvga)
/*We send half of the line while reading then half later */
while(hg--){
uint8_t*b=buf,*b2=buf;
lg2=wg/2;
while(lg2--){
while((PIND&4));//wait for low
*b++=(PINC&15)|(PIND&240);
while(!(PIND&4));//wait for high
while((PIND&4));//wait for low
*b++=(PINC&15)|(PIND&240);
UDR0=*b2++;
while(!(PIND&4));//wait for high
}
/* Finish sending the remainder during blanking */
lg2=wg/2;
while(!( UCSR0A & (1<<UDRE0)));//wait for byte to transmit
while(lg2--){
UDR0=*b2++;
while(!( UCSR0A & (1<<UDRE0)));//wait for byte to transmit
}
}
#else
/* This code is very similar to qvga sending code except we have even more blanking time to take advantage of */
while(hg--){
uint8_t*b=buf,*b2=buf;
lg2=wg/5;
while(lg2--){
while((PIND&4));//wait for low
*b++=(PINC&15)|(PIND&240);
while(!(PIND&4));//wait for high
while((PIND&4));//wait for low
*b++=(PINC&15)|(PIND&240);
while(!(PIND&4));//wait for high
while((PIND&4));//wait for low
*b++=(PINC&15)|(PIND&240);
while(!(PIND&4));//wait for high
while((PIND&4));//wait for low
*b++=(PINC&15)|(PIND&240);
while(!(PIND&4));//wait for high
while((PIND&4));//wait for low
*b++=(PINC&15)|(PIND&240);
UDR0=*b2++;
while(!(PIND&4));//wait for high
}
/* Finish sending the remainder during blanking */
lg2=320-(wg/5);
while(!( UCSR0A & (1<<UDRE0)));//wait for byte to transmit
while(lg2--){
UDR0=*b2++;
while(!( UCSR0A & (1<<UDRE0)));//wait for byte to transmit
}
}
#endif
}