Hiroh Satoh
/
keyboard
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Dependencies: BLE_API mbed-dev nRF51822
Diff: WatchDog.h
- Revision:
- 42:2c3be8694896
- Child:
- 45:f4be69c936f6
diff -r 2b034f22b98f -r 2c3be8694896 WatchDog.h
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/WatchDog.h Sat Aug 27 08:43:53 2016 +0000
@@ -0,0 +1,19 @@
+
+class WatchDog {
+ static const uint32_t RELOAD_VALUE = 0x6E524635;
+ static const uint8_t WDT_TIMEOUT = 3; // sec
+public:
+ static void init() {
+ // timeout [s] = (CRV + 1) / 32768;
+ // crv = 32768 * timeout - 1
+ NRF_WDT->CRV = 32768 * WDT_TIMEOUT - 1;
+ NRF_WDT->RREN = WDT_RREN_RR0_Enabled << WDT_RREN_RR0_Pos;
+ NRF_WDT->CONFIG = WDT_CONFIG_SLEEP_Pause << WDT_CONFIG_SLEEP_Pos;
+ NRF_WDT->TASKS_START = 1;
+ }
+
+ static void reload() {
+ NRF_WDT->RR[0] = RELOAD_VALUE;
+ }
+
+};
\ No newline at end of file