X-Git-Url: http://git.rot13.org/?a=blobdiff_plain;ds=sidebyside;f=firmware%2Fapps%2Fmonitor%2Fmonitor.c;h=1263bcb007524c6c3094af5999d1c8523177f19e;hb=ce0bba3cfbf4844bdce1f6984af24d1f78c347f1;hp=defa814a63660b32089af08b539d13b57cede651;hpb=4323091949d787158fccc6871356bcdd61fffffa;p=goodfet

diff --git a/firmware/apps/monitor/monitor.c b/firmware/apps/monitor/monitor.c
index defa814..1263bcb 100644
--- a/firmware/apps/monitor/monitor.c
+++ b/firmware/apps/monitor/monitor.c
@@ -1,4 +1,13 @@
+/*! \file monitor.c
+  \author Travis Goodspeed
+  
+  This is an implementation of the SPI protocol
+  for the GoodFET project.
+*/
+
 #include "command.h"
+#include "platform.h"
+#include "monitor.h"
 
 //! Handles a monitor command.
 void monitorhandle(unsigned char app,
@@ -15,5 +24,53 @@ void monitorhandle(unsigned char app,
     cmddata[0]=memorybyte[cmddataword[0]];
     txdata(app,verb,1);
     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;
   }
 }
+
+//! 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
+  asm("br &0xfffe");
+}
+
+//! 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;
+}