Diff: main.cpp

Revision:

0:da73efbce5d9

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Sun Jan 31 21:05:09 2016 +0000
@@ -0,0 +1,82 @@
+#include "mbed.h"
+#include "PowerControl/PowerControl.h"
+#include "PowerControl/EthernetPowerControl.h"
+
+PwmOut myled(p21);
+DigitalIn button1(p30);
+DigitalIn button2(p29);
+DigitalIn switch1(p8);
+DigitalOut myled4(LED4);
+DigitalOut myled3(LED3);
+float intensity = 0.5f;
+
+// Function to power down magic USB interface chip with new firmware
+#define USR_POWERDOWN    (0x104)
+int semihost_powerdown() {
+    uint32_t arg;
+    return __semihost(USR_POWERDOWN, &arg);
+}
+
+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() {
+    PHY_PowerDown();   //Power down Ethernet interface
+    int result;
+    result = semihost_powerdown();  //Power down USB interface
+    int count = 0;
+    Peripheral_PowerDown(0xFFFF7FFF);
+
+    wdt.kick(4.0);
+    if ((LPC_WDT->WDMOD >> 2) & 1)
+        myled4 = 1; else myled3 = 1;
+        wait(2);
+        myled4 = 0;
+        myled3 = 0;
+
+     
+    
+    while(1) {
+        if (button1 == 0)  {
+            if (intensity <= 1.0f) {
+                intensity += 0.07f;
+            }
+        }
+        if (button2 == 0) {
+            if (intensity >= 0.0f) {
+                intensity -= 0.07f;
+            }
+        }
+        if (switch1 == 0) {
+            myled = intensity;
+        }
+        else {
+            myled = 0.0f;
+            }
+        wait(0.1);
+        count++;
+        if (count == 80) {
+            wait(11);
+            }
+        wdt.kick(); //kick the watchdog timer
+    }
+}