#include "command.h"
#include "glitch.h"
-//! Disable glitch state at init.
+
+//! Call this before the function to be glitched.
+void glitchprime(){
+#ifdef DAC12IR
+ //Don't forget to call glitchvoltages().
+ P5OUT|=0x80;
+ //Reconfigure TACTL.
+ TACTL=0; //Clear dividers.
+ TACTL|=TACLR; //Clear TimerA Config
+ TACTL|=
+ TASSEL_SMCLK | //SMCLK source,
+ MC_1 | //Count up to CCR0
+ TAIE; //Enable Interrupt
+ CCTL0 = CCIE; // CCR0 interrupt enabled
+ CCR0 = glitchcount;
+
+ //Enable general interrupts, just in case.
+ //_EINT();
+#endif
+}
+
+//! Setup glitching.
void glitchsetup(){
#ifdef DAC12IR
//Set GSEL high to disable glitching.
P5DIR|=0x80;
- P6DIR|=0x40;
+ P6DIR|=BIT6+BIT5;
P5OUT|=0x80;
- P6OUT|=0x40;
-
- glitchsetupdac();
+ P6OUT|=BIT6+BIT5;
- WDTCTL = WDTPW + WDTHOLD; // Stop WDT
- TACTL = TASSEL1 + TACLR; // SMCLK, clear TAR
- CCTL0 = CCIE; // CCR0 interrupt enabled
+ WDTCTL = WDTPW + WDTHOLD; // Stop WDT
+ TACTL = TASSEL1 + TACLR; // SMCLK, clear TAR
+ CCTL0 = CCIE; // CCR0 interrupt enabled
CCR0 = glitchcount;
- TACTL |= MC1; // Start Timer_A in continuous mode
+ TACTL |= MC1; // Start Timer_A in continuous mode
+ //TACTL |= MC0; // Stop Timer_A;
_EINT(); // Enable interrupts
#endif
}
-//! Setup analog chain for glitching.
-void glitchsetupdac(){
- glitchvoltages(glitchL,glitchH);
-}
-
-// Timer A0 interrupt service routine
+// Timer A0 interrupt service routine
interrupt(TIMERA0_VECTOR) Timer_A (void)
{
-
- switch(glitchstate){
- case 0:
- P1OUT|=1;
- glitchstate=1;
- DAC12_0DAT = glitchH;
- break;
- case 1:
- P1OUT|=1;
- glitchstate=0;
- DAC12_0DAT = glitchL;
- break;
- default:
- P1OUT&=~1;
- //Do nothing.
- break;
- }
- CCR0 += glitchcount; // Add Offset to CCR0
+ P5OUT&=~BIT7;//Glitch
+ P5OUT|=BIT7;//Normal
+ TACTL |= MC0; // Stop Timer_A;
+ return;
}
-u16 glitchH=0xfff, glitchL=0xfff,
- glitchstate=2, glitchcount=0;
+u16 glitchcount=0;
//! Glitch an application.
void glitchapp(u8 app){
//! Set glitching voltages.
-void glitchvoltages(u16 low, u16 high){
+void glitchvoltages(u16 gnd, u16 vcc){
int i;
- glitchH=high;
- glitchL=low;
-
+ //debugstr("Set glitching voltages.");
#ifdef DAC12IR
ADC12CTL0 = REF2_5V + REFON; // Internal 2.5V ref on
// Delay here for reference to settle.
for(i=0;i!=0xFFFF;i++) asm("nop");
DAC12_0CTL = DAC12IR + DAC12AMP_5 + DAC12ENC; // Int ref gain 1
+ DAC12_1CTL = DAC12IR + DAC12AMP_5 + DAC12ENC; // Int ref gain 1
// 1.0V 0x0666, 2.5V 0x0FFF
- DAC12_0DAT = high;
- //DAC12_0DAT = 0x0880;
+ DAC12_0DAT = vcc; //high;
+ DAC12_1DAT = gnd; //low;
#endif
}
//! Set glitching rate.
glitchcount=rate;
}
-
//! Handles a monitor command.
void glitchhandle(unsigned char app,
unsigned char verb,
glitchrate(cmddataword[0]);
txdata(app,verb,0);
break;
+ case GLITCHVERB:
+ //FIXME parameters don't work yet.
+ glitchprime();
+ handle(cmddata[0],cmddata[1],0);
+ break;
+ case GLITCHTIME:
+ _DINT();//disable interrupts
+ TACTL=0; //clear dividers
+ TACTL|=TACLR; //clear config
+ TACTL|=TASSEL_SMCLK| //smclk source
+ MC_2; //continuout mode.
+
+ //perform the function
+ silent++;//Don't want the function to return anything.
+ handle(cmddata[0],cmddata[1],0);
+ silent--;
+ cmddataword[0]=TAR; //Return counter.
+ txdata(app,verb,2);
+ break;
case START:
+ glitchvoltages(0xFFF,0);//Inverted VCC and GND.
+ 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.
+ 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");
+ }
+ txdata(app,verb,0);
+ break;
case STOP:
case GLITCHAPP:
- case GLITCHVERB:
default:
debugstr("Unknown glitching verb.");
txdata(app,NOK,0);