Diff: main.cpp

Revision:

0:d1018730bb52

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Wed Feb 18 14:47:35 2015 +0000
@@ -0,0 +1,53 @@
+#include "mbed.h"
+
+DigitalIn sw(p5);
+DigitalOut led(p10);
+DigitalOut myled1(LED1);
+DigitalOut myled2(LED2);
+DigitalOut myled3(LED3);
+DigitalOut myled4(LED4);
+
+class Watchdog {
+public:
+// Load timeout value in watchdog timer and enable
+    void kick(float s) {
+        LPC_WDT->WDCLKSEL = 0x1;                // Set CLK src to PCLK
+        uint32_t clk = SystemCoreClock / 16;    // WD has a fixed /4 prescaler, PCLK default is /4
+        LPC_WDT->WDTC = s * (float)clk;
+        LPC_WDT->WDMOD = 0x3;                   // Enabled and Reset
+        kick();
+    }
+// "kick" or "feed" the dog - reset the watchdog timer
+// by writing this required bit pattern
+    void kick() {
+        LPC_WDT->WDFEED = 0xAA;
+        LPC_WDT->WDFEED = 0x55;
+    }
+};
+ 
+// Setup the watchdog timer
+Watchdog wdt;
+
+int main() {
+    int count = 0;
+    if ((LPC_WDT->WDMOD >> 2) & 1)
+    myled4 = 1; else myled3 = 1;
+    
+    wdt.kick(10.0); 
+    
+    while(1) {
+        if (sw == 1) {
+        led = 1;
+        myled1 = 1;
+        wait(0.2);
+        } else {
+            if (count >= 20) while(1) {};
+            led = 0;
+            myled1 = 0;
+            wait(0.2);
+        }
+        count++;
+        wdt.kick(); 
+    }
+    
+}