From: travisutk <travisutk@12e2690d-a6be-4b82-a7b7-67c4a43b65c8>
Date: Thu, 20 Aug 2009 14:01:43 +0000 (+0000)
Subject: Monitor improved to measure stack depth of any other application.
X-Git-Url: http://git.rot13.org/?p=goodfet;a=commitdiff_plain;h=da2061d1d45ea077c127af4e74c189bb51abd441;ds=sidebyside

Monitor improved to measure stack depth of any other application.
See today's blog post for details.

git-svn-id: https://svn.code.sf.net/p/goodfet/code/trunk@79 12e2690d-a6be-4b82-a7b7-67c4a43b65c8
---

diff --git a/firmware/Makefile b/firmware/Makefile
index b17708b..1d6134e 100644
--- a/firmware/Makefile
+++ b/firmware/Makefile
@@ -23,7 +23,6 @@ run:
 
 install: $(app).hex
 	$(BSL) -e -p $(app).hex 
-	#$(BSL) -P $(app).hex -r
 $(app): $(app).c $(libs) $(apps)
 $(app).hex: $(app)
 	msp430-objcopy goodfet -O ihex goodfet.hex
diff --git a/firmware/apps/monitor/monitor.c b/firmware/apps/monitor/monitor.c
index e5c320a..78aaa91 100644
--- a/firmware/apps/monitor/monitor.c
+++ b/firmware/apps/monitor/monitor.c
@@ -1,5 +1,6 @@
 #include "command.h"
 #include "platform.h"
+#include "monitor.h"
 
 //! Handles a monitor command.
 void monitorhandle(unsigned char app,
@@ -21,5 +22,36 @@ void monitorhandle(unsigned char app,
     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;
   }
 }
+
+//! 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;
+}
diff --git a/firmware/apps/spi/spi.c b/firmware/apps/spi/spi.c
index c70cdb4..5c733eb 100644
--- a/firmware/apps/spi/spi.c
+++ b/firmware/apps/spi/spi.c
@@ -96,7 +96,7 @@ void spiflash_setstatus(unsigned char c){
   spitrans8(0x01);//SET STATUS
   spitrans8(c);
   P5OUT|=SS;  //Raise !SS to end transaction.
-  return c;
+  //return c;
 }
 
 //! Handles a monitor command.
diff --git a/firmware/include/command.h b/firmware/include/command.h
index ece0ad1..d5e22e6 100644
--- a/firmware/include/command.h
+++ b/firmware/include/command.h
@@ -19,6 +19,8 @@ extern unsigned char cmddata[256];
 
 // Monitor Commands
 #define MONITOR_CHANGE_BAUD 0x80
+#define MONITOR_RAM_PATTERN 0x90
+#define MONITOR_RAM_DEPTH 0x91
 
 //CHIPCON commands
 #define CC_CHIP_ERASE 0x80