diff options
Diffstat (limited to 'main.c')
| -rw-r--r-- | main.c | 38 |
1 files changed, 22 insertions, 16 deletions
@@ -23,6 +23,8 @@ #define DAY_SECONDS (24*3600) +void RTC_IRQHandler(void); + uint32_t pcg32_random_r() { // *Really* minimal PCG32 code / (c) 2014 M.E. O'Neill / pcg-random.org // Licensed under Apache License 2.0 (NO WARRANTY, etc. see website) @@ -109,30 +111,34 @@ int main(void){ GPIOC->CRH |= (0<<GPIO_CRH_CNF13_Pos) | (2<<GPIO_CRH_MODE13_Pos); /* PC13 - LED */ - GPIOB->CRH |= + GPIOB->CRH = (0<<GPIO_CRH_CNF8_Pos) | (2<<GPIO_CRH_MODE8_Pos); /* PB8 - MOSFET */ GPIOC->ODR |= 1<<13; /* LED */ GPIOB->ODR &= ~(1<<8); /* MOSFET */ rtc_init(); rtc_alarm_reset(); - //NVIC_ClearPendingIRQ(RTC_IRQn); - NVIC_EnableIRQ(RTC_IRQn); - NVIC_SetPriority(RTC_IRQn, 1); + NVIC_ClearPendingIRQ(RTC_IRQn); + //NVIC_EnableIRQ(RTC_IRQn); + //NVIC_SetPriority(RTC_IRQn, 1); rtc_set_alarm_rel_sec(1); - //if (!(PWR->CSR & PWR_CSR_WUF)) /* This reset wasn't caused by the RTC alarm */ - REBOOT_REGISTER++; + if (!(PWR->CSR & PWR_CSR_WUF)) /* This reset wasn't caused by the RTC alarm */ + REBOOT_REGISTER++; - //SCB->SCR |= SCB_SCR_SEVONPEND_Msk; + SCB->SCR |= SCB_SCR_SEVONPEND_Msk; //SCB->SCR &= (~SCB_SCR_SLEEPONEXIT_Msk) & (~SCB_SCR_SLEEPDEEP_Msk); //PWR->CR &= (~PWR_CR_PDDS) & (~PWR_CR_LPDS); - //PWR->CR |= PWR_CR_CWUF; /* This has 2 cycles latency, thus the NOPs */ - //asm volatile ("nop"); - //asm volatile ("nop"); - while (42) - asm volatile ("wfi"); + while (42) { + RTC_IRQHandler(); + PWR->CR |= PWR_CR_CWUF; /* This has 2 cycles latency, thus the NOPs */ + asm volatile ("nop"); + asm volatile ("nop"); + asm volatile ("wfe"); + } + //while (42) + // asm volatile ("wfi"); } void RTC_IRQHandler(void) { @@ -160,15 +166,15 @@ void RTC_IRQHandler(void) { GPIOB->ODR |= 1<<8; /* Go to sleep mode to keep GPIO active */ - //PWR->CR &= ~PWR_CR_PDDS; - //SCB->SCR &= ~(SCB_SCR_SLEEPDEEP_Msk); /* Use deep sleep mode */ + PWR->CR &= ~PWR_CR_PDDS; + SCB->SCR &= ~(SCB_SCR_SLEEPDEEP_Msk); /* Use deep sleep mode */ } else { GPIOB->ODR &= ~(1<<8); /* Go to standby mode to reduce power consumption */ - //PWR->CR = PWR_CR_PDDS; - //SCB->SCR |= SCB_SCR_SLEEPDEEP_Msk; /* Use deep sleep mode */ + PWR->CR = PWR_CR_PDDS; + SCB->SCR |= SCB_SCR_SLEEPDEEP_Msk; /* Use deep sleep mode */ } GPIOC->ODR &= ~(1<<13); |