#include <io.h>
#include <iomacros.h>
+//! Handles a chipcon command.
+void cc_handle_fn( uint8_t const app,
+ uint8_t const verb,
+ uint32_t const len);
+
+// define the jtag app's app_t
+app_t const chipcon_app = {
+
+ /* app number */
+ CHIPCON,
+
+ /* handle fn */
+ cc_handle_fn,
+
+ /* name */
+ "CHIPCON",
+
+ /* desc */
+ "\tThe CHIPCON app adds support for debugging the chipcon\n"
+ "\t8051 processor.\n"
+};
/* Concerning clock rates, the maximimum clock rates are defined on
page 4 of the spec. They vary, but are roughly 30MHz. Raising
//This could be more accurate.
//Does it ever need to be?
#define CCSPEED 3
-#define CCDELAY(x) delay(x)
-//#define CCDELAY(x)
+//#define CCSPEED 3
+//#define CCDELAY(x) delay(x)
+#define CCDELAY(x)
-#define SETMOSI P5OUT|=MOSI
-#define CLRMOSI P5OUT&=~MOSI
-#define SETCLK P5OUT|=SCK
-#define CLRCLK P5OUT&=~SCK
-#define READMISO (P5IN&MISO?1:0)
+#define SETMOSI SPIOUT|=MOSI
+#define CLRMOSI SPIOUT&=~MOSI
+#define SETCLK SPIOUT|=SCK
+#define CLRCLK SPIOUT&=~SCK
+#define READMISO (SPIIN&MISO?1:0)
-#define CCWRITE P5DIR|=MOSI
-#define CCREAD P5DIR&=~MISO
+#define CCWRITE SPIDIR|=MOSI
+#define CCREAD SPIDIR&=~MISO
//! Set up the pins for CC mode. Does not init debugger.
void ccsetup(){
- P5OUT|=MOSI+SCK+RST;
- P5DIR|=MOSI+SCK+RST;
+ SPIOUT|=MOSI+SCK+RST;
+ SPIDIR|=MOSI+SCK+RST;
//P5REN=0xFF;
}
//! Initialize the debugger
void ccdebuginit(){
//Port output BUT NOT DIRECTION is set at start.
- P5OUT|=MOSI+SCK+RST;
+ SPIOUT|=MOSI+SCK+RST;
- //delay(30); //So the beginning is ready for glitching.
+ delay(30); //So the beginning is ready for glitching.
//Two positive debug clock pulses while !RST is low.
//Take RST low, pulse twice, then high.
- P5OUT&=~SCK;
+ SPIOUT&=~SCK;
delay(10);
- P5OUT&=~RST;
+ SPIOUT&=~RST;
delay(10);
//Two rising edges.
- P5OUT^=SCK; //up
+ SPIOUT^=SCK; //up
delay(1);
- P5OUT^=SCK; //down
+ SPIOUT^=SCK; //down
delay(1);
- P5OUT^=SCK; //up
+ SPIOUT^=SCK; //up
delay(1);
- P5OUT^=SCK; //Unnecessary.
+ SPIOUT^=SCK; //Unnecessary.
delay(1);
//delay(0);
//Raise !RST.
- P5OUT|=RST;
+ SPIOUT|=RST;
}
//! Read and write a CC bit.
byte <<= 1;
/* half a clock cycle before leading/rising edge */
- CCDELAY(CCSPEED/2);
+ CCDELAY(CCSPEED>>2);
SETCLK;
/* half a clock cycle before trailing/falling edge */
- CCDELAY(CCSPEED/2);
+ CCDELAY(CCSPEED>>2);
/* read MISO on trailing edge */
byte |= READMISO;
cmddata[i]=cctrans8(0);
}
-//! Handles a monitor command.
-void cchandle(unsigned char app,
- unsigned char verb,
- unsigned long len){
+//! Handles a chipcon command.
+void cc_handle_fn( uint8_t const app,
+ uint8_t const verb,
+ uint32_t const len)
+{
//Always init. Might help with buggy lines.
//Might hurt too.
//ccdebuginit();
break;
case STOP://exit debugger
//Take RST low, then high.
- P5OUT&=~RST;
+ SPIOUT&=~RST;
CCDELAY(CCSPEED);
- P5OUT|=RST;
+ SPIOUT|=RST;
txdata(app,verb,0);
break;
case SETUP:
txdata(app,verb,1);
break;
case CC_STEP_REPLACE:
- txdata(app,NOK,0);//TODO add me
+ txdata(app,NOK,0);//Don't add this; it's non-standard.
break;
case CC_GET_CHIP_ID:
cmddataword[0]=cc_get_chip_id();