Michael Walker / Mbed 2 deprecated NucleoStandbyTest

Test of the Nucleo boards standby mode. sleep() and deepsleep() use the STM32 SLEEP and STOP modes. This uses the 3rd low power mode STANDBY. Utilises the WakeUp code here: https://developer.mbed.org/users/Sissors/code/WakeUp/ Adds a ClearWakeUp so that Standby can be entered repeatedly.

Dependencies:   WakeUp mbed

main.cpp@0:1ecaa40f74d0, 2016-05-07 (annotated)

Committer:
MichaelW
Date:
Sat May 07 11:51:56 2016 +0000
Revision:
0:1ecaa40f74d0
Child:
1:085a87258f10
Working Code

Who changed what in which revision?

UserRevisionLine numberNew contents of line
MichaelW 0:1ecaa40f74d0 1 // Depending on the LED connections either the LED is off the 2 seconds
MichaelW 0:1ecaa40f74d0 2 // the target spends in deepsleep(), and on for the other second. Or it is inverted
MichaelW 0:1ecaa40f74d0 3
MichaelW 0:1ecaa40f74d0 4
MichaelW 0:1ecaa40f74d0 5 #include "mbed.h"
MichaelW 0:1ecaa40f74d0 6 #include "WakeUp.h"
MichaelW 0:1ecaa40f74d0 7 #include "stm32f0xx_hal.h"
MichaelW 0:1ecaa40f74d0 8 #include "stm32f0xx_hal_rtc_ex.h"
MichaelW 0:1ecaa40f74d0 9 #include "rtc_wakeup.h"
MichaelW 0:1ecaa40f74d0 10
MichaelW 0:1ecaa40f74d0 11 #define RTC_CR_WUTE (1<<10)
MichaelW 0:1ecaa40f74d0 12 #define RTC_CR_WUTIE (1<<14)
MichaelW 0:1ecaa40f74d0 13 #define EXTI_IMR_MR20 0x00100000
MichaelW 0:1ecaa40f74d0 14
MichaelW 0:1ecaa40f74d0 15
MichaelW 0:1ecaa40f74d0 16 DigitalOut myled(LED1);
MichaelW 0:1ecaa40f74d0 17 DigitalOut Buzz(A2);
MichaelW 0:1ecaa40f74d0 18 DigitalOut RST(D0);
MichaelW 0:1ecaa40f74d0 19
MichaelW 0:1ecaa40f74d0 20 static RTC_HandleTypeDef RtcHandle;
MichaelW 0:1ecaa40f74d0 21
MichaelW 0:1ecaa40f74d0 22 void ClearWakeUp(void);
MichaelW 0:1ecaa40f74d0 23
MichaelW 0:1ecaa40f74d0 24 int main()
MichaelW 0:1ecaa40f74d0 25 {
MichaelW 0:1ecaa40f74d0 26 ClearWakeUp();
MichaelW 0:1ecaa40f74d0 27 RST = 1;
MichaelW 0:1ecaa40f74d0 28 Buzz = 0;
MichaelW 0:1ecaa40f74d0 29 myled = 1;
MichaelW 0:1ecaa40f74d0 30 wait(0.2);
MichaelW 0:1ecaa40f74d0 31 myled = 0;
MichaelW 0:1ecaa40f74d0 32 wait(0.2);
MichaelW 0:1ecaa40f74d0 33 //print("Wake %i\r\n", TM_LOWPOWER_StandbyReset() );
MichaelW 0:1ecaa40f74d0 34 //The low-power oscillator can be quite inaccurate on some targets
MichaelW 0:1ecaa40f74d0 35 //this function calibrates it against the main clock
MichaelW 0:1ecaa40f74d0 36 WakeUp::calibrate();
MichaelW 0:1ecaa40f74d0 37
MichaelW 0:1ecaa40f74d0 38
MichaelW 0:1ecaa40f74d0 39
MichaelW 0:1ecaa40f74d0 40 //RCC_APB1PeriphResetCmd(RCC_APB1Periph_PWR, DISABLE); //Need write access to DBP bit
MichaelW 0:1ecaa40f74d0 41
MichaelW 0:1ecaa40f74d0 42 //__HAL_RCC_PWR_CLK_ENABLE();
MichaelW 0:1ecaa40f74d0 43 //PWR->CR |= PWR_CR_DBP;
MichaelW 0:1ecaa40f74d0 44 //SET_BIT(PWR->CR, PWR_CR_DBP);
MichaelW 0:1ecaa40f74d0 45 /* //Wait for Backup domain Write protection disable
MichaelW 0:1ecaa40f74d0 46 uint32_t tickstart = HAL_GetTick();
MichaelW 0:1ecaa40f74d0 47
MichaelW 0:1ecaa40f74d0 48
MichaelW 0:1ecaa40f74d0 49 while((PWR->CR & PWR_CR_DBP) == RESET)
MichaelW 0:1ecaa40f74d0 50 {
MichaelW 0:1ecaa40f74d0 51 if((HAL_GetTick() - tickstart) > RCC_DBP_TIMEOUT_VALUE)
MichaelW 0:1ecaa40f74d0 52 {
MichaelW 0:1ecaa40f74d0 53 return HAL_TIMEOUT;
MichaelW 0:1ecaa40f74d0 54 }
MichaelW 0:1ecaa40f74d0 55 }
MichaelW 0:1ecaa40f74d0 56 */
MichaelW 0:1ecaa40f74d0 57 /*
MichaelW 0:1ecaa40f74d0 58 HAL_PWR_EnableBkUpAccess();
MichaelW 0:1ecaa40f74d0 59
MichaelW 0:1ecaa40f74d0 60 RtcHandle.Instance = RTC;
MichaelW 0:1ecaa40f74d0 61 __HAL_RTC_WRITEPROTECTION_DISABLE(&RtcHandle);
MichaelW 0:1ecaa40f74d0 62
MichaelW 0:1ecaa40f74d0 63 __HAL_RTC_ALARM_EXTI_CLEAR_FLAG();
MichaelW 0:1ecaa40f74d0 64 __HAL_RTC_ALARM_CLEAR_FLAG(&RtcHandle, RTC_FLAG_ALRAF);
MichaelW 0:1ecaa40f74d0 65 __HAL_RTC_WAKEUPTIMER_CLEAR_FLAG(&RtcHandle, RTC_FLAG_WUTF);
MichaelW 0:1ecaa40f74d0 66 //__HAL_RTC_WAKEUPTIMER_EXTI_CLEAR_FLAG() ;
MichaelW 0:1ecaa40f74d0 67
MichaelW 0:1ecaa40f74d0 68 // __HAL_RCC_BACKUPRESET_FORCE();
MichaelW 0:1ecaa40f74d0 69 //__HAL_RCC_BACKUPRESET_FORCE();
MichaelW 0:1ecaa40f74d0 70
MichaelW 0:1ecaa40f74d0 71 __HAL_RTC_WRITEPROTECTION_ENABLE(&RtcHandle);
MichaelW 0:1ecaa40f74d0 72
MichaelW 0:1ecaa40f74d0 73 */
MichaelW 0:1ecaa40f74d0 74
MichaelW 0:1ecaa40f74d0 75 ///Direct register access version ***************************************************
MichaelW 0:1ecaa40f74d0 76
MichaelW 0:1ecaa40f74d0 77 // ClearWakeUp();
MichaelW 0:1ecaa40f74d0 78
MichaelW 0:1ecaa40f74d0 79 //RCC_APB1PeriphCmd(RCC_APB1Periph_PWR, ENABLE);
MichaelW 0:1ecaa40f74d0 80
MichaelW 0:1ecaa40f74d0 81 // __HAL_PWR_CLEAR_FLAG(PWR_FLAG_SB);
MichaelW 0:1ecaa40f74d0 82 //From Below works ***************************************************
MichaelW 0:1ecaa40f74d0 83
MichaelW 0:1ecaa40f74d0 84 WakeUp::set_ms(2000);
MichaelW 0:1ecaa40f74d0 85
MichaelW 0:1ecaa40f74d0 86 //Enter deepsleep, the program won't go beyond this point until it is woken up
MichaelW 0:1ecaa40f74d0 87 //deepsleep();
MichaelW 0:1ecaa40f74d0 88
MichaelW 0:1ecaa40f74d0 89 printf("Standby Mode\r\n");
MichaelW 0:1ecaa40f74d0 90
MichaelW 0:1ecaa40f74d0 91 ClearWakeUp();
MichaelW 0:1ecaa40f74d0 92
MichaelW 0:1ecaa40f74d0 93 HAL_PWR_EnterSTANDBYMode();
MichaelW 0:1ecaa40f74d0 94
MichaelW 0:1ecaa40f74d0 95 //This will never be executed
MichaelW 0:1ecaa40f74d0 96 printf("After sleep\r\n");
MichaelW 0:1ecaa40f74d0 97 }
MichaelW 0:1ecaa40f74d0 98 void ClearWakeUp(void){
MichaelW 0:1ecaa40f74d0 99 PWR->CR |= PWR_CR_DBP; //Enable power domain
MichaelW 0:1ecaa40f74d0 100 RTC->WPR = 0xCA; //Disable RTC write protection
MichaelW 0:1ecaa40f74d0 101 RTC->WPR = 0x53;
MichaelW 0:1ecaa40f74d0 102
MichaelW 0:1ecaa40f74d0 103 __HAL_PWR_CLEAR_FLAG(PWR_FLAG_WU);
MichaelW 0:1ecaa40f74d0 104 __HAL_PWR_CLEAR_FLAG(PWR_FLAG_SB);
MichaelW 0:1ecaa40f74d0 105
MichaelW 0:1ecaa40f74d0 106 RTC->WPR = 0xFF; //Enable RTC write protection
MichaelW 0:1ecaa40f74d0 107 PWR->CR &= ~PWR_CR_DBP; //Disable power domain
MichaelW 0:1ecaa40f74d0 108 }
MichaelW 0:1ecaa40f74d0 109
MichaelW 0:1ecaa40f74d0 110 void ClearWakeUp2(void)
MichaelW 0:1ecaa40f74d0 111 {
MichaelW 0:1ecaa40f74d0 112 ///Direct register access version ***************************************************
MichaelW 0:1ecaa40f74d0 113 RtcHandle.Instance = RTC;
MichaelW 0:1ecaa40f74d0 114
MichaelW 0:1ecaa40f74d0 115 __HAL_RTC_WAKEUPTIMER_DISABLE(&RtcHandle);
MichaelW 0:1ecaa40f74d0 116 __HAL_RTC_WAKEUPTIMER_DISABLE_IT(&RtcHandle,RTC_IT_WUT);
MichaelW 0:1ecaa40f74d0 117
MichaelW 0:1ecaa40f74d0 118 PWR->CR |= PWR_CR_DBP; //Enable power domain //*******************
MichaelW 0:1ecaa40f74d0 119 RTC->WPR = 0xCA; //Disable RTC write protection
MichaelW 0:1ecaa40f74d0 120 RTC->WPR = 0x53;
MichaelW 0:1ecaa40f74d0 121
MichaelW 0:1ecaa40f74d0 122 __HAL_RTC_WAKEUPTIMER_EXTI_DISABLE_IT() ;
MichaelW 0:1ecaa40f74d0 123 __HAL_RTC_WAKEUPTIMER_EXTI_DISABLE_EVENT() ;
MichaelW 0:1ecaa40f74d0 124
MichaelW 0:1ecaa40f74d0 125 /* Disable the Alarm A interrupt */
MichaelW 0:1ecaa40f74d0 126 __HAL_RTC_ALARMA_DISABLE(&RtcHandle);
MichaelW 0:1ecaa40f74d0 127
MichaelW 0:1ecaa40f74d0 128 /* Clear flag alarm A */
MichaelW 0:1ecaa40f74d0 129 __HAL_RTC_ALARM_CLEAR_FLAG(&RtcHandle, RTC_FLAG_ALRAF);
MichaelW 0:1ecaa40f74d0 130
MichaelW 0:1ecaa40f74d0 131 __HAL_RTC_ALARM_EXTI_CLEAR_FLAG();
MichaelW 0:1ecaa40f74d0 132 __HAL_RTC_ALARM_CLEAR_FLAG(&RtcHandle, RTC_FLAG_ALRAF);
MichaelW 0:1ecaa40f74d0 133 __HAL_RTC_WAKEUPTIMER_CLEAR_FLAG(&RtcHandle, RTC_FLAG_WUTF);
MichaelW 0:1ecaa40f74d0 134
MichaelW 0:1ecaa40f74d0 135 // #define __HAL_RTC_WAKEUPTIMER_EXTI_CLEAR_FLAG() (EXTI->PR = RTC_EXTI_LINE_WAKEUPTIMER_EVENT)
MichaelW 0:1ecaa40f74d0 136 __HAL_RTC_WAKEUPTIMER_EXTI_CLEAR_FLAG() ;
MichaelW 0:1ecaa40f74d0 137
MichaelW 0:1ecaa40f74d0 138 EXTI->PR = RTC_EXTI_LINE_WAKEUPTIMER_EVENT ;
MichaelW 0:1ecaa40f74d0 139 EXTI->PR = 0x007FFFFF;
MichaelW 0:1ecaa40f74d0 140 RTC->WPR = 0xFF; //Enable RTC write protection
MichaelW 0:1ecaa40f74d0 141 PWR->CR &= ~PWR_CR_DBP; //Disable power domain
MichaelW 0:1ecaa40f74d0 142
MichaelW 0:1ecaa40f74d0 143 }