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stm32:peripherals:pwr_sleep [2016/10/13 12:39] feurstm32:peripherals:pwr_sleep [2019/09/16 07:19] (current) – [Programming Example] kjaz
Line 21: Line 21:
 #include "reg_stm32f4xx.h" #include "reg_stm32f4xx.h"
  
-RCC->AHBENR[0] |= (0x1 <<  0u);       /* Enable GPIOA clock */ +RCC->AHB1ENR |= (0x1 <<  0u);       /* Enable GPIOA clock */ 
-RCC->APBENR[1] |= (0x1 << 14u);       /* Enable SYSCFG clock */+RCC->APB2ENR |= (0x1 << 14u);       /* Enable SYSCFG clock */
  
 /* Configure wake up pin (PA.0). */ /* Configure wake up pin (PA.0). */
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 /* Configure interrupt. */ /* Configure interrupt. */
-SYSCFG->EXTICR[0] |= (0u << 0u);      /* Set EXTI0 to GPIOA. */+SYSCFG->EXTICR1 |= (0u << 0u);      /* Set EXTI0 to GPIOA. */
 EXTI->RTSR |= (0x1 << 0u);            /* Trigger on rising edge. */ EXTI->RTSR |= (0x1 << 0u);            /* Trigger on rising edge. */
 EXTI->IMR |= (0x1 << 0u);             /* Unmask interrupt line. */ EXTI->IMR |= (0x1 << 0u);             /* Unmask interrupt line. */
-NVIC->ISER[0] |= (0x1 << 6u);         /* Enable EXTI0 interrupt. */+NVIC->ISER0 |= (0x1 << 6u);         /* Enable EXTI0 interrupt. */
  
 /* Disable SLEEPDEEP (STOP or STANDBY mode). */ /* Disable SLEEPDEEP (STOP or STANDBY mode). */
 SCB->SCR &= ~(0x1 << 2u); SCB->SCR &= ~(0x1 << 2u);
  
-/* ---------- Enter sleep mode ---------- */+ 
 +/* -------------------- Enter SLEEP mode -------------------- */
  
 __asm volatile ("wfi"); __asm volatile ("wfi");
  
  
-/* ---------- Enter sleep mode ---------- */+/* -------------------- Exit SLEEP mode --------------------- */
  
 /* Since all registers and the SRAM are untouched by the SLEEP mode, /* Since all registers and the SRAM are untouched by the SLEEP mode,
-   the program continues after the WFI instruction. + the program continues after the WFI instruction. 
-   No further steps required.  + No further steps required.  
-*/+ */
  
 </code> </code>
 \\ \\
  • stm32/peripherals/pwr_sleep.1476362344.txt.gz
  • Last modified: 2016/10/13 12:39
  • by feur