Martin Deng / Mbed 2 deprecated SystemManagement

System Management code

Dependencies:   CANBuffer mbed SystemManagement mbed-rtos

Dependents:   SystemManagement

System Management code for Penn Electric Racing

Functions:

Controls Fans and Pumps via instruction from CAN Messages, ramps them up over time to prevent damage

Turns on/off DC-DC converter via instruction from CAN Messages

Watchdog/Watchdog.cpp

Committer:
martydd3
Date:
2014-10-10
Revision:
7:5f6e31faa08e
Parent:
6:6a04210a3f4f

File content as of revision 7:5f6e31faa08e:

// Simon's Watchdog code from
// http://mbed.org/forum/mbed/topic/508/

#include "mbed.h"

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;
    }
};