//! Setup the AVR pins.
void avrsetup(){
spisetup();
-
- glitchsetup();
}
//! Initialized an attached AVR.
SETSS;
CLRCLK;
- delay(500);
+ //delay(5);
CLRSS;
- delay(500);
+ //delay(5);
//Enable programming
avr_prgen();
}
//! Read and write an SPI byte with delays.
-unsigned char avrtrans8(unsigned char byte){
- register unsigned int bit;
+u8 avrtrans8(u8 byte){
+ register u16 bit;
//This function came from the SPI Wikipedia article.
//Minor alterations.
avrtrans8(a);
avrtrans8(b);
if(avrtrans8(c)!=b){
- debugstr("AVR sync error, b not returned as c.");
+ //debugstr("AVR sync error, b not returned as c.");
//Reconnect here?
}
return avrtrans8(d);
u8 avr_lockbits(){
return avrexchange(0x58, 0, 0, 0);
}
+//! Write lock bits.
+void avr_setlock(u8 bits){
+ avrexchange(0xAC,0xE0,0x00,
+ bits);
+}
//! Read a byte of EEPROM.
u8 avr_peekeeprom(u16 adr){
unsigned int at;
static u8 connected=0;
+ /*
if(!avr_isready() && connected)
debugstr("AVR is not yet ready.");
+ */
switch(verb){
case READ:
avrsetup();
txdata(app,verb,0);
break;
- case START://returns device code
+ case START:
avrconnect();
- //no break here
+ txdata(app,verb,0);
+ break;//Used to fall through here.
case AVR_PEEKSIG:
for(i=0;i<4;i++)
cmddata[i]=avr_sig(i);
cmddata[0]=avr_lockbits();
txdata(app,verb,1);
break;
-
+ case AVR_POKELOCK:
+ avr_setlock(cmddata[0]);
+ txdata(app,verb,0);
+ break;
case AVR_POKEEEPROM:
avr_pokeeeprom(cmddataword[0], cmddata[2]);
//no break here.