Monitor echo function, for better synchronization.

[goodfet] / firmware / apps / monitor / monitor.c

diff --git a/firmware/apps/monitor/monitor.c b/firmware/apps/monitor/monitor.c
index 0bb7838..218afca 100644 (file)
--- a/firmware/apps/monitor/monitor.c
+++ b/firmware/apps/monitor/monitor.c
@@ -1,15 +1,113 @@
+/*! \file monitor.c
+  \author Travis Goodspeed
+  \brief Local debug monitor.
+*/
+
 #include "command.h"
+#include "platform.h"
+#include "monitor.h"
+
+//! Call a function by address.
+int fncall(unsigned int adr){
+  int (*machfn)() = 0;
+  machfn= (int (*)()) adr;
+  return machfn();
+}
 
 //! Handles a monitor command.
 void monitorhandle(unsigned char app,
                   unsigned char verb,
-                  unsigned char len){
+                  unsigned long len){
   switch(verb){
+  default:
+    debugstr("ERROR: Command unsupported by debug monitor.");
+    break;
+  case MONITOR_ECHO:
+    //Echo back the same buffer.
+    txdata(app,verb,len);
+    break;
   case PEEK:
     cmddata[0]=memorybyte[cmddataword[0]];
     txdata(app,verb,1);
     break;
   case POKE:
+    //Todo, make word or byte.
+    memorybyte[cmddataword[0]]=cmddata[2];
+    cmddata[0]=memorybyte[cmddataword[0]];
+    txdata(app,verb,1);
     break;
+  case CALL:
+    //Set the program counter to cmdword[0];
+    cmddataword[0]=fncall(cmddataword[0]);
+    txdata(app,verb,2);
+    break;
+  case EXEC:
+    //Execute the argument as code from RAM.
+    cmddataword[0]=fncall((u16) cmddataword);
+    txdata(app,verb,2);
+    break;
+  case MONITOR_SIZEBUF:
+    //TODO make the data length target-specific, varying by ram.
+    cmddataword[0]=0x100;
+    txdata(app,verb,2);
+    break;
+  case MONITOR_CHANGE_BAUD:
+    //This command, and ONLY this command, does not reply.
+    setbaud(cmddata[0]);
+    //txdata(app,verb,0);
+    break;
+  case MONITOR_RAM_PATTERN:
+    monitor_ram_pattern();//reboots, will never return
+    break;
+  case MONITOR_RAM_DEPTH:
+    cmddataword[0]=monitor_ram_depth();
+    txdata(app,verb,2);
+    break;
+  case MONITOR_DIR:
+    P5DIR=cmddata[0];
+    txdata(app,verb,1);
+    break;
+  case MONITOR_IN:
+    cmddata[0]=P5IN;
+    txdata(app,verb,1);
+    break;
+  case MONITOR_OUT:
+    P5OUT=cmddata[0];
+    txdata(app,verb,1);
+    break;
+  case MONITOR_SILENT:
+    silent=cmddata[0];
+    txdata(app,verb,1);
+    break;
+  case MONITOR_CONNECTED:
+    msp430_init_dco_done();
+    txdata(app,verb,0);
+    break;
+  }
+}
+
+//! Overwrite all of RAM with 0xBEEF, then reboot.
+void monitor_ram_pattern(){
+  register int *a;
+  
+  //Wipe all of ram.
+  for(a=(int*)0x1100;a<(int*)0x2500;a++){//TODO get these from the linker.
+    *((int*)a) = 0xBEEF;
   }
+  txdata(0x00,0x90,0);
+  
+  //Reboot
+  #ifdef MSP430
+  asm("br &0xfffe");
+  #endif
+}
+
+//! Return the number of contiguous bytes 0xBEEF, to measure RAM usage.
+unsigned int monitor_ram_depth(){
+  register int a;
+  register int count=0;
+  for(a=0x1100;a<0x2500;a+=2)
+    if(*((int*)a)==0xBEEF) count+=2;
+  
+  return count;
 }