//Normal voltage, use resistors instead of output.
//P5DIR=0x80; //ONLY glitch pin is output.
+ P5DIR|=0x80; //glitch pin is output.
P5OUT|=0x80; //It MUST begin high.
//P5REN|=0x7F; //Resistors pull high and low weakly.
WDTCTL = WDTPW + WDTHOLD; // Stop WDT
TACTL = TASSEL1 + TACLR; // SMCLK, clear TAR
CCTL0 = CCIE; // CCR0 interrupt enabled
- CCR0 = glitchcount+0x15; //clock divider
- TACTL |= MC_3;
+ CCR0 = glitchcount+0x10; // Compare Value
+ TACTL |= MC_2; // continuous mode.
#endif
}
// Timer A0 interrupt service routine
interrupt(TIMERA0_VECTOR) Timer_A (void){
- P5OUT&=~BIT7;//Glitch
- //P5DIR=BIT7; //All else high impedance.
- P5OUT|=BIT7;//Normal
- TACTL |= MC0;// Stop Timer_A;
+ //This oughtn't be necessary, but glitches repeat without it.
+ TACTL=0; //disable counter.
+
+
+ P5OUT^=BIT7;//Glitch
+ //asm("nop"); //delay deepens glitch.
+ P5OUT^=BIT7;//Normal
+
+ //This oughtn't be necessary, but glitches repeat without it.
+ TACTL=0; //disable counter.
+
+ //P5OUT^=BIT7;//Normal
return;
}
void glitchhandle(unsigned char app,
unsigned char verb,
unsigned long len){
- P1OUT&=~1;
switch(verb){
case GLITCHVOLTAGES:
glitchvoltages(cmddataword[0],
case GLITCHVERB:
//FIXME parameters don't work yet.
glitchprime();
+ TAR=0; //Reset clock.
handle(cmddata[0],cmddata[1],0);
+ TACTL |= MC0;// Stop Timer_A;
break;
case GLITCHTIME:
_DINT();//disable interrupts
TACTL=0; //clear dividers
TACTL|=TACLR; //clear config
TACTL|=TASSEL_SMCLK| //smclk source
- MC_2; //continuout mode.
+ MC_2; //continuous mode.
//perform the function
silent++;//Don't want the function to return anything.
+ TAR=0;
handle(cmddata[0],cmddata[1],0);
- silent--;
cmddataword[0]=TAR; //Return counter.
+ silent--;
txdata(app,verb,2);
break;
case START:
- glitchvoltages(0xFFF,0);//Inverted VCC and GND.
+ //Testing mode, for looking at the glitch waveform.
+ glitchvoltages(0,0xFFF);//Minimum glitch, for noise test.
+ //glitchvoltages(0,0);//Drop VCC
+ //glitchvoltages(0xFFF,0xFFF);//Raise Ground
P5OUT|=BIT7;//Normal
P5DIR|=BIT7;
while(1){
P5OUT&=~BIT7;//Glitch
- //asm("nop");//asm("nop");asm("nop");asm("nop");asm("nop");asm("nop");
- asm("nop"); //Not necessary.
+ //asm("nop"); //Not Necessary
P5OUT|=BIT7;//Normal
asm("nop");asm("nop");asm("nop");asm("nop");asm("nop");asm("nop");
asm("nop");asm("nop");asm("nop");asm("nop");asm("nop");asm("nop");