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@7:5f6e31faa08e, 2014-10-10 (annotated)

Committer:
martydd3
Date:
Fri Oct 10 20:59:36 2014 +0000
Revision:
7:5f6e31faa08e
Parent:
6:6a04210a3f4f 
PollSwitch code;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
martydd3 6:6a04210a3f4f 1 // Simon's Watchdog code from
martydd3 6:6a04210a3f4f 2 // http://mbed.org/forum/mbed/topic/508/
martydd3 6:6a04210a3f4f 3
martydd3 6:6a04210a3f4f 4 #include "mbed.h"
martydd3 6:6a04210a3f4f 5
martydd3 6:6a04210a3f4f 6 class Watchdog {
martydd3 6:6a04210a3f4f 7 public:
martydd3 6:6a04210a3f4f 8 // Load timeout value in watchdog timer and enable
martydd3 6:6a04210a3f4f 9 void kick(float s) {
martydd3 6:6a04210a3f4f 10 LPC_WDT->WDCLKSEL = 0x1; // Set CLK src to PCLK
martydd3 6:6a04210a3f4f 11 uint32_t clk = SystemCoreClock / 16; // WD has a fixed /4 prescaler, PCLK default is /4
martydd3 6:6a04210a3f4f 12 LPC_WDT->WDTC = s * (float)clk;
martydd3 6:6a04210a3f4f 13 LPC_WDT->WDMOD = 0x3; // Enabled and Reset
martydd3 6:6a04210a3f4f 14 kick();
martydd3 6:6a04210a3f4f 15 }
martydd3 6:6a04210a3f4f 16 // "kick" or "feed" the dog - reset the watchdog timer
martydd3 6:6a04210a3f4f 17 // by writing this required bit pattern
martydd3 6:6a04210a3f4f 18 void kick() {
martydd3 6:6a04210a3f4f 19 LPC_WDT->WDFEED = 0xAA;
martydd3 6:6a04210a3f4f 20 LPC_WDT->WDFEED = 0x55;
martydd3 6:6a04210a3f4f 21 }
martydd3 6:6a04210a3f4f 22 };