//This could be more accurate.
//Does it ever need to be?
#define CCSPEED 3
-#define CCDELAY(x) delay(x)
+//#define CCDELAY(x) delay(x)
+#define CCDELAY(x)
#define SETMOSI P5OUT|=MOSI
#define CLRMOSI P5OUT&=~MOSI
void ccsetup(){
P5OUT|=MOSI+SCK+RST;
P5DIR|=MOSI+SCK+RST;
- //P5DIR&=~MISO; //MOSI is MISO
+ //P5REN=0xFF;
}
+
+/* 33 cycle critical region
+0000000e <ccdebuginit>:
+ e: f2 d0 0d 00 bis.b #13, &0x0031 ;5 cycles
+ 12: 31 00
+ 14: f2 c2 31 00 bic.b #8, &0x0031 ;4 cycles
+ 18: d2 c3 31 00 bic.b #1, &0x0031 ;4
+ 1c: f2 e2 31 00 xor.b #8, &0x0031 ;4
+ 20: f2 e2 31 00 xor.b #8, &0x0031 ;4
+ 24: f2 e2 31 00 xor.b #8, &0x0031 ;4
+ 28: f2 e2 31 00 xor.b #8, &0x0031 ;4
+ 2c: d2 d3 31 00 bis.b #1, &0x0031 ;4
+ 30: 30 41 ret
+*/
+
+/*
//! Initialize the debugger
void ccdebuginit(){
+ //Port output BUT NOT DIRECTION is set at start.
+ P5OUT|=MOSI+SCK+RST;
+
+ //delay(30); //So the beginning is ready for glitching.
+
//Two positive debug clock pulses while !RST is low.
//Take RST low, pulse twice, then high.
P5OUT&=~SCK;
P5OUT&=~RST;
- //pulse twice
- CCDELAY(CCSPEED);
- P5OUT|=SCK; //up
- CCDELAY(CCSPEED);
- P5OUT&=~SCK; //down
- CCDELAY(CCSPEED);
- P5OUT|=SCK; //up
- CCDELAY(CCSPEED);
- P5OUT&=~SCK; //down
+ //Two rising edges.
+ P5OUT^=SCK; //up
+ P5OUT^=SCK; //down
+ P5OUT^=SCK; //up
+ P5OUT^=SCK; //Unnecessary.
+
//Raise !RST.
P5OUT|=RST;
}
+*/
+
+//! Initialize the debugger.
+void ccdebuginit();
//! Read and write a CC bit.
unsigned char cctrans8(unsigned char byte){
if(cmddata[0]&0x4)
ccread(1);
txdata(app,verb,1);
-
break;
case WRITE: //Write a command with no reply.
cccmd(len);
txdata(app,verb,0);
break;
case START://enter debugger
- ccsetup();
ccdebuginit();
txdata(app,verb,0);
break;
void cc_lockchip(){
register int i;
- debugstr("Locking chip.");
+ //debugstr("Locking chip.");
cc_wr_config(1);//Select Info Flash
if(!(cc_rd_config()&1))
debugstr("Config forgotten!");
//! Read the CHIP ID bytes.
unsigned short cc_get_chip_id(){
- unsigned short toret;
cmddata[0]=CCCMD_GET_CHIP_ID; //0x68
cccmd(1);
ccread(2);
cmddata[1]=0xc7;
cmddata[2]=0x51;
cc_debug_instr(3);
- debugstr("Loaded bank info.");
+ //debugstr("Loaded bank info.");
cc_set_pc(0xf000+MAXFLASHPAGE_SIZE);//execute code fragment
cc_resume();
- debugstr("Executing.");
+ //debugstr("Executing.");
while(!(cc_read_status()&CC_STATUS_CPUHALTED)){
}
- debugstr("Done flashing.");
+ //debugstr("Done flashing.");
P1OUT&=~1;//clear LED
}