Egon V
code that uses Watchdog to reset Mbed every 30seconds. After 30-60mins, the ethernet interface fails to setup() after WatchDog reset.
main.cpp@0:0ce833f21e63, 2012-06-07 (annotated)
- Committer:
- eqon
- Date:
- Thu Jun 07 05:44:29 2012 +0000
- Revision:
- 0:0ce833f21e63
Who changed what in which revision?
| User | Revision | Line number | New contents of line |
|---|---|---|---|
| eqon | 0:0ce833f21e63 | 1 | #include "mbed.h" |
| eqon | 0:0ce833f21e63 | 2 | #include "EthernetNetIf.h" |
| eqon | 0:0ce833f21e63 | 3 | EthernetNetIf eth; |
| eqon | 0:0ce833f21e63 | 4 | |
| eqon | 0:0ce833f21e63 | 5 | void dogKick() { |
| eqon | 0:0ce833f21e63 | 6 | LPC_WDT->WDFEED = 0xAA; |
| eqon | 0:0ce833f21e63 | 7 | LPC_WDT->WDFEED = 0x55; |
| eqon | 0:0ce833f21e63 | 8 | printf("dogkick\n"); |
| eqon | 0:0ce833f21e63 | 9 | } |
| eqon | 0:0ce833f21e63 | 10 | void setDog(float s =30) { |
| eqon | 0:0ce833f21e63 | 11 | LPC_WDT->WDCLKSEL = 0x1; // Set CLK src to PCLK |
| eqon | 0:0ce833f21e63 | 12 | uint32_t clk = SystemCoreClock / 16; // WD has a fixed /4 prescaler, PCLK default is /4 |
| eqon | 0:0ce833f21e63 | 13 | LPC_WDT->WDTC = s * (float)clk; |
| eqon | 0:0ce833f21e63 | 14 | LPC_WDT->WDMOD = 0x3; // Enabled and Reset |
| eqon | 0:0ce833f21e63 | 15 | dogKick(); |
| eqon | 0:0ce833f21e63 | 16 | } |
| eqon | 0:0ce833f21e63 | 17 | DigitalOut ethrst(P1_28);// PHY chip on mbed reset |
| eqon | 0:0ce833f21e63 | 18 | DigitalOut led(LED3); //Alive |
| eqon | 0:0ce833f21e63 | 19 | int main() { |
| eqon | 0:0ce833f21e63 | 20 | ethrst=0;//PHY reset |
| eqon | 0:0ce833f21e63 | 21 | wait(1); |
| eqon | 0:0ce833f21e63 | 22 | ethrst=1; |
| eqon | 0:0ce833f21e63 | 23 | wait(1); |
| eqon | 0:0ce833f21e63 | 24 | |
| eqon | 0:0ce833f21e63 | 25 | printf("\n\nStartup...\n"); |
| eqon | 0:0ce833f21e63 | 26 | |
| eqon | 0:0ce833f21e63 | 27 | |
| eqon | 0:0ce833f21e63 | 28 | setDog(30); |
| eqon | 0:0ce833f21e63 | 29 | printf("Setting up...\n"); |
| eqon | 0:0ce833f21e63 | 30 | EthernetErr ethErr = eth.setup();// i have tested with different timeouts setup(30000) etc |
| eqon | 0:0ce833f21e63 | 31 | |
| eqon | 0:0ce833f21e63 | 32 | |
| eqon | 0:0ce833f21e63 | 33 | if (ethErr) { |
| eqon | 0:0ce833f21e63 | 34 | printf("Error %d in setup.\n", ethErr); |
| eqon | 0:0ce833f21e63 | 35 | return -1; |
| eqon | 0:0ce833f21e63 | 36 | } |
| eqon | 0:0ce833f21e63 | 37 | printf("Setup OK\n"); |
| eqon | 0:0ce833f21e63 | 38 | led=1; |
| eqon | 0:0ce833f21e63 | 39 | return 0; |
| eqon | 0:0ce833f21e63 | 40 | |
| eqon | 0:0ce833f21e63 | 41 | } |