Ryan Greene / Mbed 2 deprecated DodgeRadioEmulatorv30

Library to control Dodge LX (83.3k) CAN devices

Dependencies:   DodgeRadioLib EthernetWrapperLib OBDIILib mbed

WatchDogTimer.cpp@5:46f139e53b15, 2012-01-24 (annotated)

Committer:
rtgree01
Date:
Tue Jan 24 02:18:42 2012 +0000
Revision:
5:46f139e53b15
Parent:
2:e8b13ea2881b 
Radio Emulator using operate function.; obdii disabled

Who changed what in which revision?

UserRevisionLine numberNew contents of line
rtgree01 1:90487a39d54e 1 #include "WatchDogTimer.h"
rtgree01 1:90487a39d54e 2
rtgree01 1:90487a39d54e 3 void WatchDogTimer::kick(float s)
rtgree01 1:90487a39d54e 4 {
rtgree01 1:90487a39d54e 5 LPC_WDT->WDCLKSEL = 0x1; // Set CLK src to PCLK
rtgree01 1:90487a39d54e 6 uint32_t clk = SystemCoreClock / 16; // WD has a fixed /4 prescaler, PCLK default is /4
rtgree01 1:90487a39d54e 7 LPC_WDT->WDTC = s * (float)clk;
rtgree01 1:90487a39d54e 8 LPC_WDT->WDMOD = 0x3; // Enabled and Reset
rtgree01 1:90487a39d54e 9 kick();
rtgree01 1:90487a39d54e 10 }
rtgree01 1:90487a39d54e 11
rtgree01 1:90487a39d54e 12 // "kick" or "feed" the dog - reset the watchdog timer
rtgree01 1:90487a39d54e 13 // by writing this required bit pattern
rtgree01 1:90487a39d54e 14 void WatchDogTimer::kick()
rtgree01 1:90487a39d54e 15 {
rtgree01 1:90487a39d54e 16 LPC_WDT->WDFEED = 0xAA;
rtgree01 1:90487a39d54e 17 LPC_WDT->WDFEED = 0x55;
rtgree01 1:90487a39d54e 18 }
rtgree01 2:e8b13ea2881b 19
rtgree01 2:e8b13ea2881b 20 // On reset, indicate a watchdog reset or a pushbutton reset
rtgree01 2:e8b13ea2881b 21 bool WatchDogTimer::TimedOut()
rtgree01 2:e8b13ea2881b 22 {
rtgree01 2:e8b13ea2881b 23 return ((LPC_WDT->WDMOD >> 2) & 1);
rtgree01 5:46f139e53b15 24 }
rtgree01 5:46f139e53b15 25
rtgree01 5:46f139e53b15 26 void WatchDogTimer::Disable()
rtgree01 5:46f139e53b15 27 {
rtgree01 5:46f139e53b15 28 LPC_WDT->WDMOD = 0;
rtgree01 2:e8b13ea2881b 29 }