Diff: bdmcpu32.cpp

Revision:

4:682d96ff6d79

Parent:

2:bf3a2b29259a

Child:

5:1775b4b13232

--- a/bdmcpu32.cpp	Tue Jun 07 12:23:28 2011 +0000
+++ b/bdmcpu32.cpp	Wed Sep 11 11:55:51 2013 +0000
@@ -1217,6 +1217,7 @@
     return (bdm_response == BDM_CMDCMPLTE);
 }
 
+
 //-----------------------------------------------------------------------------
 /**
     Writes a word to target MCU via BDM line and gets the response.
@@ -1254,6 +1255,42 @@
 //-----------------------------------------------------------------------------
 /**
     Writes a word to target MCU via BDM line and gets the response.
+
+    @param            value            value to write
+    @param            num_bits        value size, bits
+*/
+/*
+void bdm_clk_fast(uint16_t value, uint8_t num_bits) {
+//    PIN_BKPT.output();
+    PIN_DSI.output();
+    // clock the value via BDM
+    bdm_response = ((uint32_t)value) << (32 - num_bits);
+//    bool dsi;
+    while (num_bits--) {
+
+        // falling edge on BKPT/DSCLK
+        PIN_BKPT.write(0);
+        // set DSI bit
+        PIN_DSI.write(bdm_response & 0x80000000);
+        bdm_response <<= 1;
+        // read DSO bit
+        bdm_response |= PIN_DSO.read();
+        // short delay
+//        for (uint8_t c = 1; c; c--);
+//        wait_us(1);
+        // rising edge on BKPT/DSCLK
+        PIN_BKPT.write(1);
+        // short delay
+        for (uint8_t c = 1; c; c--);
+//        wait_us(1);
+    }
+    PIN_DSI.input();
+}
+//*/
+
+//-----------------------------------------------------------------------------
+/**
+    Writes a word to target MCU via BDM line and gets the response.
     This 'fast' version can be used once the 68332 has been 'prepped'
     because the BDM interface can go twice as fast once the 68332
     clock is increased from 8 MHz to 16 MHz
@@ -1261,6 +1298,8 @@
     @param            value            value to write
     @param            num_bits        value size, bits
 */
+
+//*
 void bdm_clk_fast(uint16_t value, uint8_t num_bits) {
 
     //Set BKPT
@@ -1277,24 +1316,38 @@
     while (num_bits--) {
         // set DSI bit
 //        LPC_GPIO2->FIOPIN = ((bool)(bdm_response & 0x80000000) << 2);
-        if (bdm_response & 0x80000000) 
-            LPC_GPIO2->FIOSET = (1 << 2);
-        else
-            LPC_GPIO2->FIOCLR = (1 << 2);
+        //if (bdm_response & 0x80000000) 
+        //    LPC_GPIO2->FIOSET = (1 << 2);
+        //else
+        //    LPC_GPIO2->FIOCLR = (1 << 2);
+            
+        (bdm_response & 0x80000000) ? LPC_GPIO2->FIOSET = (1 << 2) : LPC_GPIO2->FIOCLR = (1 << 2);
+        
+        //*((volatile unsigned int *)0x23380a88) = (bool)(bdm_response & 0x80000000);
+        //*((volatile unsigned int *)0x23380a88) = bdm_response >> 31;
+        //*((volatile unsigned int *)0x23380a9c) = 1;
+        //used to set the P2.7 pin is slower (about 3 cycles) than this one
+        //GPIO2->FIOPIN=0x80
        // falling edge on BKPT/DSCLK
         LPC_GPIO2->FIOCLR = (1 << 4);
+        //*((volatile unsigned int *)0x23380a90) = 0;
 //        for (uint8_t c = 1; c; c--);
 //        // read DSO bit
 //        (bdm_response <<= 1) |= (bool)((LPC_GPIO0->FIOPIN) & (1 << 11));  -- OLD CONNECTION to PIN 27
         (bdm_response <<= 1) |= (bool)((LPC_GPIO2->FIOPIN) & (1 << 1));
+        //(bdm_response <<= 1) |= *((volatile unsigned int *)0x23380a84);
         // rising edge on BKPT/DSCLK
         LPC_GPIO2->FIOSET = (1 << 4);
+        //*((volatile unsigned int *)0x23380a90) = 1;
         for (uint8_t c = 1; c; c--);
     }
     //Make DSI an input
     LPC_GPIO2->FIODIR &= ~(1 << 2);
 //    LPC_GPIO2->FIOMASK = mask;
 }
+
+//*/
+
 //-----------------------------------------------------------------------------
 /**
     Clears the BDM interface after errors.