From 2b73b151575385c92e5652e390e80d837a457234 Mon Sep 17 00:00:00 2001
From: Stefan `Sec` Zehl <sec@42.org>
Date: Mon, 13 Jun 2011 23:39:21 +0200
Subject: [PATCH] Add low-voltage warning blink

---
 basic/basic.h     |  1 +
 basic/voltage.c   |  6 +++++-
 modules/default.c | 11 +++++++++++
 3 files changed, 17 insertions(+), 1 deletion(-)

diff --git a/basic/basic.h b/basic/basic.h
index 73cf337..c2eb6ac 100644
--- a/basic/basic.h
+++ b/basic/basic.h
@@ -128,5 +128,6 @@ void delayms(uint32_t ms);
 
 // voltage.c
 void VoltageCheck(void);
+uint32_t GetVoltage(void);
 
 #endif
diff --git a/basic/voltage.c b/basic/voltage.c
index 0732e26..1ed2d69 100644
--- a/basic/voltage.c
+++ b/basic/voltage.c
@@ -2,9 +2,9 @@
 
 #include "basic/basic.h"
 
+uint32_t results=5000;
 
 void VoltageCheck(void){
-	uint32_t results;
 
 	results = adcRead(1);
 	results *= 10560;
@@ -18,3 +18,7 @@ void VoltageCheck(void){
 	    __asm volatile ("WFI");
     };
 };
+
+uint32_t GetVoltage(void){
+    return results;
+};
diff --git a/modules/default.c b/modules/default.c
index 3d2f8d2..86581f2 100644
--- a/modules/default.c
+++ b/modules/default.c
@@ -1,4 +1,5 @@
 #include <sysinit.h>
+#include "basic/basic.h"
 
 /**************************************************************************/
 
@@ -15,6 +16,16 @@ void tick_default(void) {
         VoltageCheck();
         ctr=0;
     };
+    if(ctr%5==0){
+        if(GetVoltage()<3600){
+            IOCON_PIO1_11 = 0x0;
+            gpioSetDir(RB_LED3, gpioDirection_Output);
+            if( (ctr/5)%10 == 1 )
+                gpioSetValue (RB_LED3, 1);
+            else
+                gpioSetValue (RB_LED3, 0);
+        };
+    };
 
     return;
 };