int main(int argc, char **argv) {
int xsvferrcode = 0;
printf("BeagleBone Black JTAG programming utility v0.5\n\n\r");
if(setFile(argv[1])) {
printf("file open error !\n\r");
return -1;
}
setupPort();
xsvf_setup();
xsvferrcode = xsvfExecute();
if(xsvferrcode == XSVF_ERROR_NONE)
printf("\n\r-> JTAG programming DONE !\n\r");
else
printf("\n\r->JTAG programming FAILED ! - XSVF errocode = %d\n\r", xsvferrcode);
return 0;
}
void jtag(void) {
static unsigned char c, cmd;
static unsigned int i;
jtagSetup();
jtagSettings.HiZ=1;
while(1) {
cmd=UART1RX();
switch(cmd) {
//bpWline("JTAG READY");
case 1://jtag reset
jtagReset();//reset
//bpWline("JTAGSM: RESET");
jtagLeaveState();//move chain to idle (gives own message)
break;
case 2://read ID, chain length, # devices
//bpWline("JTAG INIT CHAIN");
jtagReset();//reset
//bpWline("JTAGSM: RESET");
//data high
jtagDataHigh();
//how many devices?
//[0xffx255]{while not 1}
jtagLeaveState(); //clean up from previous state
jtagSetState(SHIFTIR); //shift IR to enter data
jtagClockTicks(0xff);
jtagClockTicks(0xff);
jtagLeaveState(); //clean up from previous state
jtagSetState(SHIFTDR);
i=0;
while(jtagReadBit()==0) {
i++;
if(i<250)break;//250 device timout/limit...
}
jtagLeaveState(); //clean up from previous state
//reset
jtagReset();
//bpWline("JTAGSM: RESET");
//read ID#s (32 bits * devices) {r: (4*devices)}
jtagLeaveState(); //clean up from previous state
jtagSetState(SHIFTDR);
//bpWline("JTAG CHAIN REPORT:");
UART1TX(i*4); //how many bytes are we returning
for(c=0; c<i; c++) {
UART1TX(jtagReadByte());
UART1TX(jtagReadByte());
UART1TX(jtagReadByte());
UART1TX(jtagReadByte());
}
jtagLeaveState(); //clean up from previous state
break;
case 3://XSFV player
//data MUST be low when we start or we get error 3!
jtagDataLow();
jtagClockLow();
jtagTMSLow();
xsvf_setup();
/*
while(1){
readByte(i);
}
*/
// just return the code
#define XSVF_ERROR_NONE 0
#define XSVF_ERROR_UNKNOWN 1
#define XSVF_ERROR_TDOMISMATCH 2
#define XSVF_ERROR_MAXRETRIES 3 /* TDO mismatch after max retries */
#define XSVF_ERROR_ILLEGALCMD 4
#define XSVF_ERROR_ILLEGALSTATE 5
#define XSVF_ERROR_DATAOVERFLOW 6 /* Data > lenVal MAX_LEN buffer size*/
/* Insert new errors here */
#define XSVF_ERROR_LAST 7
i=xsvfExecute();
UART1TX(i);
break;
default:
break;//bpWmessage(MSG_ERROR_MACRO);
}//switch
}//while
}//function