#include "command.h"
#include "glitch.h"
+//! Handles a monitor command.
+void glitch_handle_fn( uint8_t const app,
+ uint8_t const verb,
+ uint32_t const len);
+
+// define the glitch app's app_t
+app_t const glitch_app = {
+
+ /* app number */
+ GLITCH,
+
+ /* handle fn */
+ glitch_handle_fn,
+
+ /* name */
+ "GLITCH",
+
+ /* desc */
+ "\tThe GLITCH app adds support for doing glitch research.\n"
+ "\tSee the TI example MSP430x261x_dac12_01.c for usage of the DAC.\n"
+ "\tThis module sends odd and insufficient voltages on P6.6/DAC0\n"
+ "\tin order to bypass security restrictions of target devices.\n"
+};
//! Call this before the function to be glitched.
void glitchprime(){
//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.
// 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;
}
//! Set glitching voltages.
void glitchvoltages(u16 gnd, u16 vcc){
- int i;
+
//debugstr("Set glitching voltages: GND and VCC");
//debughex(gnd);
//debughex(vcc);
*/
#ifdef DAC12IR
+ int i;
ADC12CTL0 = REF2_5V + REFON; // Internal 2.5V ref on
// Delay here for reference to settle.
for(i=0;i!=0xFFFF;i++) asm("nop");
}
//! Handles a monitor command.
-void glitchhandle(unsigned char app,
- unsigned char verb,
- unsigned long len){
+void glitch_handle_fn( uint8_t const app,
+ uint8_t const verb,
+ uint32_t const len)
+{
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:
+ debugstr("Measuring start time.");
_DINT();//disable interrupts
TACTL=0; //clear dividers
TACTL|=TACLR; //clear config
- TACTL|=TASSEL_SMCLK| //smclk source
- MC_2; //continuous mode.
+ TACTL|=
+ TASSEL_SMCLK //smclk source
+ | 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--;
+ debugstr("Measured start time.");
+ debughex(cmddataword[0]);
txdata(app,verb,2);
break;
case START:
//Testing mode, for looking at the glitch waveform.
- glitchvoltages(0xFFF,0);//Inverted VCC and GND.
+ 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");