Simon Ford / Mbed 2 deprecated WatchdogExample

A very basic example using the watchdog timer

Dependencies:   mbed

main.cpp

Committer:
simon
Date:
2010-02-17
Revision:
0:8da3c40a4505

File content as of revision 0:8da3c40a4505:

#include "mbed.h"

DigitalOut led(LED1);

class Watchdog {
public:
    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();
    }
    
    void kick() {
        LPC_WDT->WDFEED = 0xAA;
        LPC_WDT->WDFEED = 0x55;
    }
};

Watchdog w;

int main() {
    printf("Hello World!\n");
    w.kick(2.5);

    int hang = 0;
    while(1) {
        printf("loop...\n");
        wait(0.1);
        
        if(hang == 10) {
            while(1);
        }

        w.kick();
        hang++;
    }
}