return jtag430x2_jtagid();
}
+//! Grab the core ID.
unsigned int jtag430_coreid(){
jtag_ir_shift8(IR_COREIP_ID);
return jtag_dr_shift16(0);
}
+//! Grab the device ID.
unsigned long jtag430_deviceid(){
jtag_ir_shift8(IR_DEVICE_ID);
return jtag_dr_shift20(0);
}
-//! Set the program counter.
-void jtag430x2_setpc(unsigned long pc){
- //From SLAU265.
-
- unsigned short Mova;
- unsigned short Pc_l;
-
- Mova = 0x0080;
- Mova += (unsigned short)((pc>>8) & 0x00000F00);
- Pc_l = (unsigned short)((pc & 0xFFFF));
- // Check Full-Emulation-State at the beginning
+//! Write data to address
+void jtag430x2_writemem(unsigned long adr,
+ unsigned int data){
jtag_ir_shift8(IR_CNTRL_SIG_CAPTURE);
if(jtag_dr_shift16(0) & 0x0301){
- // MOVA #imm20, PC
+ CLRTCLK;
+ jtag_ir_shift8(IR_CNTRL_SIG_16BIT);
+ if(adr>=0x100)
+ jtag_dr_shift16(0x0500);//word mode
+ else
+ jtag_dr_shift16(0x0510);//byte mode
+ jtag_ir_shift8(IR_ADDR_16BIT);
+ jtag_dr_shift20(adr);
+
+ SETTCLK;
+
+ jtag_ir_shift8(IR_DATA_TO_ADDR);
+ jtag_dr_shift16(data);//16 word
+
+ CLRTCLK;
+ jtag_ir_shift8(IR_CNTRL_SIG_16BIT);
+ jtag_dr_shift16(0x0501);
+ SETTCLK;
+
+ CLRTCLK;
+ SETTCLK;
+ //init state
+ }else{
+ while(1) P1OUT^=1; //loop if locked up
+ }
+}
+
+//! Read data from address
+unsigned int jtag430x2_readmem(unsigned long adr){
+ unsigned int toret=0;
+ unsigned int tries=5;
+
+ while(1){
+ do{
+ jtag_ir_shift8(IR_CNTRL_SIG_CAPTURE);
+ }while(!(jtag_dr_shift16(0) & 0x0301));
+
+ if(jtag_dr_shift16(0) & 0x0301){
+ // Read Memory
CLRTCLK;
- // take over bus control during clock LOW phase
- jtag_ir_shift8(IR_DATA_16BIT);
- SETTCLK;
- jtag_dr_shift16(Mova);
jtag_ir_shift8(IR_CNTRL_SIG_16BIT);
- jtag_dr_shift16(0x1400);
- jtag_ir_shift8(IR_DATA_16BIT);
- CLRTCLK;
+ if(adr>=0x100){
+ jtag_dr_shift16(0x0501);//word read
+ }else{
+ jtag_dr_shift16(0x0511);//byte read
+ }
+
+ jtag_ir_shift8(IR_ADDR_16BIT);
+ jtag_dr_shift20(adr); //20
+
+ jtag_ir_shift8(IR_DATA_TO_ADDR);
SETTCLK;
- jtag_dr_shift16(Pc_l);
CLRTCLK;
+ toret = jtag_dr_shift16(0x0000);
+
SETTCLK;
- jtag_dr_shift16(0x4303);
+
+ //Cycle a bit.
CLRTCLK;
- jtag_ir_shift8(IR_ADDR_CAPTURE);
- jtag_dr_shift20(0x00000);
- }else{
- while(1) P1OUT^=1; //Lock LED if locked up.
+ SETTCLK;
+ return toret;
+ }
}
+ //return toret;
}
+//! Syncs a POR.
+unsigned int jtag430x2_syncpor(){
+ jtag_ir_shift8(IR_CNTRL_SIG_16BIT);
+ jtag_dr_shift16(0x1501); //JTAG mode
+ while(!(jtag_dr_shift16(0) & 0x200));
+ return jtag430x2_por();
+}
-//! Read data from address
-unsigned int jtag430x2_readmem(unsigned int adr){
- unsigned int toret;
+//! Executes an MSP430X2 POR
+unsigned int jtag430x2_por(){
+ unsigned int i = 0;
- jtag430x2_setpc(adr);
+ // tick
+ CLRTCLK;
SETTCLK;
+
jtag_ir_shift8(IR_CNTRL_SIG_16BIT);
+ jtag_dr_shift16(0x0C01);
+ jtag_dr_shift16(0x0401);
+
+ //cycle
+ for (i = 0; i < 10; i++){
+ CLRTCLK;
+ SETTCLK;
+ }
+
jtag_dr_shift16(0x0501);
- jtag_ir_shift8(IR_ADDR_CAPTURE);
-
- jtag_ir_shift8(IR_DATA_QUICK);
-
- SETTCLK;
+
+ // tick
CLRTCLK;
- toret = jtag_dr_shift16(0);//read
-
+ SETTCLK;
+
+
+ // Disable WDT
+ jtag430x2_writemem(0x015C, 0x5A80);
+
+ // check state
jtag_ir_shift8(IR_CNTRL_SIG_CAPTURE);
+ if(jtag_dr_shift16(0) & 0x0301)
+ return(1);//ok
- return toret;
+ return 0;//error
+}
+
+
+//! Check the fuse.
+unsigned int jtag430x2_fusecheck(){
+ int i;
+ for(i=0;i<3;i++){
+ jtag_ir_shift8(IR_CNTRL_SIG_CAPTURE);
+ if(jtag_dr_shift16(0xAAAA)==0x5555)
+ return 1;//blown
+ }
+ return 0;//unblown
}
-//! Handles classic MSP430 JTAG commands. Forwards others to JTAG.
+//! Handles MSP430X2 JTAG commands. Forwards others to JTAG.
void jtag430x2handle(unsigned char app,
- unsigned char verb,
- unsigned char len){
+ unsigned char verb,
+ unsigned char len){
+ register char blocks;
+
+ unsigned int i,val;
+ unsigned long at;
+
+ //jtag430_resettap();
switch(verb){
case START:
return;
}
- //TAP setup, fuse check
- //jtag430_resettap();
+ jtag430x2_fusecheck();
+
+ jtag430x2_syncpor();
+
+ jtag430_resettap();
+
txdata(app,verb,1);
break;
case JTAG430_READMEM:
case PEEK:
- cmddataword[0]=jtag430x2_readmem(cmddataword[0]);
- //cmddataword[0]=jtag430_readmem(cmddataword[0]);
+ blocks=(len>4?cmddata[4]:1);
+ at=cmddatalong[0];
+
+ /*
+ cmddataword[0]=jtag430x2_readmem(at);
txdata(app,verb,2);
break;
+ */
+
+ len=0x80;
+ serial_tx(app);
+ serial_tx(verb);
+ serial_tx(len);
+
+ while(blocks--){
+ for(i=0;i<len;i+=2){
+ jtag430_resettap();
+ delay(10);
+
+ val=jtag430x2_readmem(at);
+
+ at+=2;
+ serial_tx(val&0xFF);
+ serial_tx((val&0xFF00)>>8);
+ }
+ }
+
+ break;
case JTAG430_COREIP_ID:
cmddataword[0]=jtag430_coreid();
txdata(app,verb,2);
txdata(app,verb,4);
break;
case JTAG430_HALTCPU:
+ //jtag430x2_haltcpu();
+ break;
case JTAG430_RELEASECPU:
case JTAG430_SETINSTRFETCH:
case JTAG430_WRITEMEM:
case POKE:
+ jtag430x2_writemem(cmddatalong[0],
+ cmddataword[2]);
+ cmddataword[0]=jtag430x2_readmem(cmddatalong[0]);
+ txdata(app,verb,2);
+ break;
case JTAG430_WRITEFLASH:
case JTAG430_ERASEFLASH:
case JTAG430_SETPC:
projects / goodfet / blobdiff