sf
Dependencies: LPC1114_WakeInterruptIn
Fork of WakeUp by
Diff: Device/WakeUp_STM_RTC.cpp
- Revision:
- 17:49d9e3a3e904
- Parent:
- 15:b2a710aca356
- Child:
- 20:68f2ee917691
--- a/Device/WakeUp_STM_RTC.cpp Sun Sep 14 06:45:51 2014 +0000 +++ b/Device/WakeUp_STM_RTC.cpp Wed Apr 22 20:36:13 2015 +0000 @@ -15,6 +15,9 @@ #define RTC_IRQ RTC_IRQn #endif +//Disabling the Backup Powerdomain does not seem to work nicely anymore if you want to use other RTC functions afterwards. +//For now I have disabled it in code, if you find WakeUp increases your powerconsumption, try enabling it again (code is still there, just commented) + FunctionPointer WakeUp::callback; void WakeUp::set_ms(uint32_t ms) @@ -24,7 +27,7 @@ wait_us(250); //The f401 seems to want a delay after init } - PWR->CR |= PWR_CR_DBP; //Enable power domain + //PWR->CR |= PWR_CR_DBP; //Enable power domain RTC->WPR = 0xCA; //Disable RTC write protection RTC->WPR = 0x53; @@ -33,7 +36,7 @@ while(!(RTC->ISR & RTC_ISR_ALRAWF)); if (ms == 0) { //Just disable alarm - PWR->CR &= ~PWR_CR_DBP; //Disable power domain + //PWR->CR &= ~PWR_CR_DBP; //Disable power domain RTC->WPR = 0xFF; //Enable RTC write protection return; } @@ -82,7 +85,7 @@ RTC->CR |= RTC_CR_ALRAE | RTC_CR_ALRAIE; //Enable Alarm RTC->WPR = 0xFF; //Enable RTC write protection - PWR->CR &= ~PWR_CR_DBP; //Disable power domain + //PWR->CR &= ~PWR_CR_DBP; //Disable power domain __enable_irq(); //Alarm is set, so irqs can be enabled again @@ -95,10 +98,14 @@ void WakeUp::irq_handler(void) { //Clear RTC + EXTI interrupt flags - PWR->CR |= PWR_CR_DBP; //Enable power domain + //PWR->CR |= PWR_CR_DBP; //Enable power domain RTC->ISR &= ~RTC_ISR_ALRAF; + RTC->WPR = 0xCA; //Disable RTC write protection + RTC->WPR = 0x53; + RTC->CR &= ~RTC_CR_ALRAE; + RTC->WPR = 0xFF; //Enable RTC write protection EXTI->PR = EXTI_RTC_LINE; - PWR->CR &= ~PWR_CR_DBP; //Disable power domain + //PWR->CR &= ~PWR_CR_DBP; //Disable power domain callback.call(); }