Library to control Dodge LX (83.3k) CAN devices
Dependencies: DodgeRadioLib EthernetWrapperLib OBDIILib mbed
WatchDogTimer.cpp@0:4d16a55d0eec, 2011-08-20 (annotated)
- Committer:
- rtgree01
- Date:
- Sat Aug 20 14:20:13 2011 +0000
- Revision:
- 0:4d16a55d0eec
- Child:
- 1:90487a39d54e
First Rev with OBDII enabled, calculates mpg, but no transmission
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
rtgree01 |
0:4d16a55d0eec | 1 | #include "WatchDogTimer.h" |
rtgree01 |
0:4d16a55d0eec | 2 | |
rtgree01 |
0:4d16a55d0eec | 3 | void WatchDogTimer::kick(float s) |
rtgree01 |
0:4d16a55d0eec | 4 | { |
rtgree01 |
0:4d16a55d0eec | 5 | LPC_WDT->WDCLKSEL = 0x1; // Set CLK src to PCLK |
rtgree01 |
0:4d16a55d0eec | 6 | uint32_t clk = SystemCoreClock / 16; // WD has a fixed /4 prescaler, PCLK default is /4 |
rtgree01 |
0:4d16a55d0eec | 7 | LPC_WDT->WDTC = s * (float)clk; |
rtgree01 |
0:4d16a55d0eec | 8 | LPC_WDT->WDMOD = 0x3; // Enabled and Reset |
rtgree01 |
0:4d16a55d0eec | 9 | kick(); |
rtgree01 |
0:4d16a55d0eec | 10 | } |
rtgree01 |
0:4d16a55d0eec | 11 | |
rtgree01 |
0:4d16a55d0eec | 12 | // "kick" or "feed" the dog - reset the watchdog timer |
rtgree01 |
0:4d16a55d0eec | 13 | // by writing this required bit pattern |
rtgree01 |
0:4d16a55d0eec | 14 | void WatchDogTimer::kick() |
rtgree01 |
0:4d16a55d0eec | 15 | { |
rtgree01 |
0:4d16a55d0eec | 16 | LPC_WDT->WDFEED = 0xAA; |
rtgree01 |
0:4d16a55d0eec | 17 | LPC_WDT->WDFEED = 0x55; |
rtgree01 |
0:4d16a55d0eec | 18 | } |