CVS: jtag/msp430 JTAGfunc.c,1.6,1.7

Update of /cvsroot/mspgcc/jtag/msp430
In directory sc8-pr-cvs1.sourceforge.net:/tmp/cvs-serv2296/jtag/msp430

Modified Files:
	JTAGfunc.c 
Log Message:
finally ReadMemQuick and WriteMemQuick implementations that do work

Index: JTAGfunc.c
===================================================================
RCS file: /cvsroot/mspgcc/jtag/msp430/JTAGfunc.c,v
retrieving revision 1.6
retrieving revision 1.7
diff -u -w -d -r1.6 -r1.7
--- JTAGfunc.c	27 Dec 2005 01:12:11 -0000	1.6
+++ JTAGfunc.c	29 Dec 2005 18:44:19 -0000	1.7
@@ -416,21 +416,19 @@
 void WriteMemQuick(WORD StartAddr, WORD Length, const WORD *DataArray) {
     WORD i;
     
-    // Initialize writing:
-    SetPC((WORD)(StartAddr-4));
-    HaltCPU();
+    SetPC(StartAddr - 2);
+    HIL_JTAG_IR(IR_DATA_16BIT);
+    HIL_TCLK(1);                                // F2xxx
+    HIL_JTAG_DR(JMP_$, F_WORD);                 // Load "jmp $" instruction for use while HALT'ed.
+    HIL_TCLK(POS_EDGE);
     
-    ClrTCLK();
     HIL_JTAG_IR(IR_CNTRL_SIG_16BIT);
-    HIL_JTAG_DR(0x2408, F_WORD);                // Set RW to write
+    HIL_JTAG_DR(0x2408, F_WORD);                // Set JTAG_HALT bit
     HIL_JTAG_IR(IR_DATA_QUICK);
     for (i = 0; i < Length; i++) {
-        HIL_JTAG_DR(DataArray[i], F_WORD);      // Shift in the write data
-        SetTCLK();
-        ClrTCLK();                              // Increment PC by 2
+        HIL_JTAG_DR(DataArray[i], F_WORD);           // Write data to memory.
+        HIL_TCLK(POS_EDGE);
     }
-    SetTCLK();
-    
     ReleaseCPU();
 }
 
@@ -475,22 +473,21 @@
 void ReadMemQuick(WORD StartAddr, WORD Length, WORD *DataArray) {
     WORD i;
     
-    // Initialize reading:
-    SetPC(StartAddr-4);         //XXX: is this correct or should it be -2
-    HaltCPU();
+    SetPC(StartAddr - 2);
+    HIL_JTAG_IR(IR_DATA_16BIT);
+    HIL_JTAG_DR(JMP_$, F_WORD);             // Load "jmp $" instruction for use while HALT'ed.
+    HIL_TCLK(NEG_EDGE);
     
-    ClrTCLK();
     HIL_JTAG_IR(IR_CNTRL_SIG_16BIT);
-    HIL_JTAG_DR(0x2409, F_WORD);                    // Set RW to read
+    HIL_JTAG_DR(0x2409, F_WORD);            // Set JTAG_HALT bit
     HIL_JTAG_IR(IR_DATA_QUICK);
-    
     for (i = 0; i < Length; i++) {
-        SetTCLK();
-        ClrTCLK();
-        DataArray[i] = HIL_JTAG_DR(0x0000, F_WORD); // Shift out the data
-                                                    // from the target.
+        HIL_TCLK(NEG_EDGE);
+        DataArray[i] = HIL_JTAG_DR(0, F_WORD);   // Read data from memory.
     }
-    SetTCLK();
+    HIL_TCLK(1);                            // F2xxx
+    HIL_JTAG_IR(IR_CNTRL_SIG_16BIT);
+    HIL_JTAG_DR(0x2401, F_WORD);            // Clear the HALT_JTAG bit (Release CPU)
     
     ReleaseCPU();
 }



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