Cleaning MSP430X2 client.
[goodfet] / firmware / apps / jtag / jtag430x2.c
index d671da4..16eeb94 100644 (file)
@@ -81,20 +81,16 @@ unsigned int jtag430x2_readmem(unsigned long adr){
   //unsigned int tries=5;
   
   while(1){
-    //do{
-    jtag_ir_shift8(IR_CNTRL_SIG_CAPTURE);
-    //}while(!(jtag_dr_shift16(0) & 0x0301));
+    do{
+      jtag_ir_shift8(IR_CNTRL_SIG_CAPTURE);
+    }while(!(jtag_dr_shift16(0) & 0x0301));
     
     if(jtag_dr_shift16(0) & 0x0301){
       // Read Memory
       CLRTCLK;
       jtag_ir_shift8(IR_CNTRL_SIG_16BIT);
       
-      //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
@@ -111,6 +107,8 @@ unsigned int jtag430x2_readmem(unsigned long adr){
       SETTCLK;
       return toret;
     }
+    
+    return 0xdead;
   }
   //return toret;
 }
@@ -119,7 +117,7 @@ unsigned int jtag430x2_readmem(unsigned long adr){
 unsigned int jtag430x2_syncpor(){
   jtag_ir_shift8(IR_CNTRL_SIG_16BIT);
   jtag_dr_shift16(0x1501); //JTAG mode
-  while(!(jtag_dr_shift16(0) & 0x200));
+  while(!(jtag_dr_shift16(0) & 0x200));  //0x100 or 0x200?
   return jtag430x2_por();
 }
 
@@ -198,7 +196,27 @@ void jtag430x2_handle_fn( uint8_t const app,
     
     //MSP430 or MSP430X
     if(jtagid==MSP430JTAGID){ 
-      debugstr("ERROR, using JTAG430X2 instead of JTAG430!");
+      //debugstr("ERROR, using JTAG430X2 instead of JTAG430!");
+      jtag430mode=MSP430MODE;
+      
+      /* So the way this works is that a width of 20 does some
+        backward-compatibility finagling, causing the correct value
+        to be exchanged for addresses on 16-bit chips as well as the
+        new MSP430X chips.  (This has only been verified on the
+        MSP430F2xx family.  TODO verify for others.)
+      */
+      
+      drwidth=20;
+      
+      //Perform a reset and disable watchdog.
+      jtag430_por();
+      jtag430_writemem(0x120,0x5a80);//disable watchdog
+      
+      jtag430_haltcpu();
+      
+      jtag430_resettap();
+      txdata(app,verb,1);
+      
       return;
     }else if(jtagid==MSP430X2JTAGID){
       jtag430mode=MSP430X2MODE;
@@ -209,6 +227,8 @@ void jtag430x2_handle_fn( uint8_t const app,
       return;
     }
     
+    
+    
     jtag430x2_fusecheck();
         
     jtag430x2_syncpor();