diff options
Diffstat (limited to 'Projects/P-NUCLEO-WB55.Nucleo/Examples_MIX/PWR/PWR_STOP1/Src/main.c')
| -rw-r--r-- | Projects/P-NUCLEO-WB55.Nucleo/Examples_MIX/PWR/PWR_STOP1/Src/main.c | 344 |
1 files changed, 344 insertions, 0 deletions
diff --git a/Projects/P-NUCLEO-WB55.Nucleo/Examples_MIX/PWR/PWR_STOP1/Src/main.c b/Projects/P-NUCLEO-WB55.Nucleo/Examples_MIX/PWR/PWR_STOP1/Src/main.c new file mode 100644 index 000000000..775d4d96c --- /dev/null +++ b/Projects/P-NUCLEO-WB55.Nucleo/Examples_MIX/PWR/PWR_STOP1/Src/main.c @@ -0,0 +1,344 @@ +/* USER CODE BEGIN Header */ +/** + ****************************************************************************** + * @file Examples_MIX/PWR/PWR_STOP1/Src/main.c + * @author MCD Application Team + * @brief This sample code shows how to use STM32WBxx PWR HAL API to enter + * and exit the STOP 1 mode. + ****************************************************************************** + * @attention + * + * <h2><center>© Copyright (c) 2019 STMicroelectronics. + * All rights reserved.</center></h2> + * + * This software component is licensed by ST under BSD 3-Clause license, + * the "License"; You may not use this file except in compliance with the + * License. You may obtain a copy of the License at: + * opensource.org/licenses/BSD-3-Clause + * + ****************************************************************************** + */ +/* USER CODE END Header */ +/* Includes ------------------------------------------------------------------*/ +#include "main.h" + +/* Private includes ----------------------------------------------------------*/ +/* USER CODE BEGIN Includes */ + +/* USER CODE END Includes */ + +/* Private typedef -----------------------------------------------------------*/ +/* USER CODE BEGIN PTD */ + +/* USER CODE END PTD */ + +/* Private define ------------------------------------------------------------*/ +/* USER CODE BEGIN PD */ +#define LED_TOGGLE_DELAY 100 +/* USER CODE END PD */ + +/* Private macro -------------------------------------------------------------*/ +/* USER CODE BEGIN PM */ + +/* USER CODE END PM */ + +/* Private variables ---------------------------------------------------------*/ + +/* USER CODE BEGIN PV */ + +static __IO uint32_t TimingDelay; + +/* USER CODE END PV */ + +/* Private function prototypes -----------------------------------------------*/ +void SystemClock_Config(void); +/* USER CODE BEGIN PFP */ + + +void SYSCLKConfig_FromSTOP(void); + +/* USER CODE END PFP */ + +/* Private user code ---------------------------------------------------------*/ +/* USER CODE BEGIN 0 */ + +/* USER CODE END 0 */ + +/** + * @brief The application entry point. + * @retval int + */ +int main(void) +{ + /* USER CODE BEGIN 1 */ + GPIO_InitTypeDef gpio_initstruct; + + /* STM32WBxx HAL library initialization: + - Configure the Flash prefetch + - Systick timer is configured by default as source of time base, but user + can eventually implement his proper time base source (a general purpose + timer for example or other time source), keeping in mind that Time base + duration should be kept 1ms since PPP_TIMEOUT_VALUEs are defined and + handled in milliseconds basis. + - Set NVIC Group Priority to 4 + - Low Level Initialization + */ + + /* USER CODE END 1 */ + + /* MCU Configuration--------------------------------------------------------*/ + + /* Reset of all peripherals, Initializes the Flash interface and the Systick. */ + HAL_Init(); + + /* USER CODE BEGIN Init */ + /* Configure LED2, and LED1 */ + BSP_LED_Init(LED2); + BSP_LED_Init(LED1); + + /* USER CODE END Init */ + + /* Configure the system clock */ + SystemClock_Config(); + + /* USER CODE BEGIN SysInit */ + + /* Set low-power mode of CPU2 */ + /* Note: Typically, action peformed by CPU2 on a dual core application. + Since this example is single core, perform it by CPU1. */ + /* Note: On STM32WB, both CPU1 and CPU2 must be in low-power mode + to set the entire System in low-power mode, corresponding to + the deepest low-power mode possible. + For example, CPU1 in Stop2 mode and CPU2 in Shutdown mode + will make system enter in Stop2 mode. */ + LL_C2_PWR_SetPowerMode(LL_PWR_MODE_SHUTDOWN); + + /* USER CODE END SysInit */ + + /* Initialize all configured peripherals */ + /* USER CODE BEGIN 2 */ + /* Enable Systick interruption for HAL */ + LL_SYSTICK_EnableIT(); + + /* User push-button (SW1) (External line 4) will be used to wakeup the system from STOP mode */ + BSP_PB_Init(BUTTON_SW1, BUTTON_MODE_EXTI); + + /* Ensure that MSI is wake-up system clock */ + __HAL_RCC_WAKEUPSTOP_CLK_CONFIG(RCC_STOP_WAKEUPCLOCK_MSI); + /* Set all GPIO in analog state to reduce power consumption, + except GPIOC to keep user button interrupt enabled */ + LL_AHB2_GRP1_EnableClock(LL_AHB2_GRP1_PERIPH_GPIOA | + LL_AHB2_GRP1_PERIPH_GPIOB | + LL_AHB2_GRP1_PERIPH_GPIOC | + LL_AHB2_GRP1_PERIPH_GPIOD | + LL_AHB2_GRP1_PERIPH_GPIOE | + LL_AHB2_GRP1_PERIPH_GPIOH); + /* In HAL, following codes can be called instead of LL: + __HAL_RCC_GPIOA_CLK_ENABLE(); + __HAL_RCC_GPIOB_CLK_ENABLE(); + __HAL_RCC_GPIOC_CLK_ENABLE(); + __HAL_RCC_GPIOD_CLK_ENABLE(); + __HAL_RCC_GPIOE_CLK_ENABLE(); + __HAL_RCC_GPIOH_CLK_ENABLE();*/ + + gpio_initstruct.Mode = GPIO_MODE_ANALOG; + gpio_initstruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH; + gpio_initstruct.Pull = GPIO_NOPULL; + gpio_initstruct.Pin = GPIO_PIN_All; + + HAL_GPIO_Init(GPIOA, &gpio_initstruct); + HAL_GPIO_Init(GPIOD, &gpio_initstruct); + HAL_GPIO_Init(GPIOE, &gpio_initstruct); + HAL_GPIO_Init(GPIOH, &gpio_initstruct); + + /* Set all GPIOC pins to analog except PC.4 (pin used for wake-up) */ + gpio_initstruct.Pin &= (GPIO_PIN_All & ~(GPIO_PIN_4)); + HAL_GPIO_Init(GPIOC, &gpio_initstruct); + + /* Set all GPIOB pins to analog except PB.00, PB.05 (LED1, LED2) */ + gpio_initstruct.Pin &= (GPIO_PIN_All & ~(GPIO_PIN_0 | GPIO_PIN_5)); + HAL_GPIO_Init(GPIOB, &gpio_initstruct); + /* USER CODE END 2 */ + + /* Infinite loop */ + /* USER CODE BEGIN WHILE */ + while (1) + { + /* USER CODE END WHILE */ + + /* USER CODE BEGIN 3 */ + /* Insert 5 second delay */ + HAL_Delay(5000); + + /* Turn OFF LED's */ + BSP_LED_Off(LED2); + BSP_LED_Off(LED1); + + /* Enter STOP 1 mode */ + HAL_PWR_EnterSTOPMode(PWR_LOWPOWERREGULATOR_ON, PWR_STOPENTRY_WFI); + + /* ... STOP 1 mode ... */ + + /* At Stop 1 mode exit, enable and select PLL as system clock source + (PLL is disabled in STOP mode) */ + + SYSCLKConfig_FromSTOP(); + } + /* USER CODE END 3 */ +} + +/** + * @brief System Clock Configuration + * @retval None + */ +void SystemClock_Config(void) +{ + RCC_OscInitTypeDef RCC_OscInitStruct = {0}; + RCC_ClkInitTypeDef RCC_ClkInitStruct = {0}; + + /** Initializes the RCC Oscillators according to the specified parameters + * in the RCC_OscInitTypeDef structure. + */ + RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_MSI; + RCC_OscInitStruct.MSIState = RCC_MSI_ON; + RCC_OscInitStruct.MSICalibrationValue = RCC_MSICALIBRATION_DEFAULT; + RCC_OscInitStruct.MSIClockRange = RCC_MSIRANGE_6; + RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON; + RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_MSI; + RCC_OscInitStruct.PLL.PLLM = RCC_PLLM_DIV1; + RCC_OscInitStruct.PLL.PLLN = 32; + RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2; + RCC_OscInitStruct.PLL.PLLR = RCC_PLLR_DIV2; + RCC_OscInitStruct.PLL.PLLQ = RCC_PLLQ_DIV2; + if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK) + { + Error_Handler(); + } + /** Configure the SYSCLKSource, HCLK, PCLK1 and PCLK2 clocks dividers + */ + RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK4|RCC_CLOCKTYPE_HCLK2 + |RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK + |RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2; + RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK; + RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1; + RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1; + RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1; + RCC_ClkInitStruct.AHBCLK2Divider = RCC_SYSCLK_DIV2; + RCC_ClkInitStruct.AHBCLK4Divider = RCC_SYSCLK_DIV1; + + if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_3) != HAL_OK) + { + Error_Handler(); + } + /** Initializes the peripherals clocks + */ + /* USER CODE BEGIN Smps */ + + /* USER CODE END Smps */ +} + +/* USER CODE BEGIN 4 */ +/** + * @brief Configures system clock after wake-up from STOP: enable PLL + * and select PLL as system clock source. + * @note RCC LL API is used in this case to allow MCU to wake-up as quick + * as possible from STOP mode. + * @param None + * @retval None + */ +void SYSCLKConfig_FromSTOP(void) +{ + /* Customize process using LL interface to improve the performance + (wake-up time from STOP quicker in LL than HAL) */ + /* Main PLL activation */ + LL_RCC_PLL_Enable(); + while(LL_RCC_PLL_IsReady() != 1) + { + } + + /* SYSCLK activation on the main PLL */ + LL_RCC_SetSysClkSource(LL_RCC_SYS_CLKSOURCE_PLL); + while(LL_RCC_GetSysClkSource() != LL_RCC_SYS_CLKSOURCE_STATUS_PLL) + { + } +} +/** + * @brief SYSTICK callback + * @param None + * @retval None + */ +void HAL_SYSTICK_Callback(void) +{ + + if (TimingDelay != 0) + { + TimingDelay--; + } + else + { + /* Toggle LED2 */ + BSP_LED_Toggle(LED2); + TimingDelay = LED_TOGGLE_DELAY; + } +} + + +/** + * @brief EXTI line detection callbacks + * @param GPIO_Pin: Specifies the pins connected EXTI line + * @retval None + */ +void HAL_GPIO_EXTI_Callback(uint16_t GPIO_Pin) +{ + if (GPIO_Pin == BUTTON_SW1_PIN) + { + /* Switch on LED2 */ + BSP_LED_On(LED2); + } +} + +/* USER CODE END 4 */ + +/** + * @brief This function is executed in case of error occurrence. + * @retval None + */ +void Error_Handler(void) +{ + /* USER CODE BEGIN Error_Handler_Debug */ + HAL_SuspendTick(); + + /* Turn LED2 & LED1 */ + BSP_LED_On(LED2); + BSP_LED_On(LED1); + while (1) + { + } + + /* USER CODE END Error_Handler_Debug */ +} + +#ifdef USE_FULL_ASSERT +/** + * @brief Reports the name of the source file and the source line number + * where the assert_param error has occurred. + * @param file: pointer to the source file name + * @param line: assert_param error line source number + * @retval None + */ +void assert_failed(uint8_t *file, uint32_t line) +{ + /* USER CODE BEGIN 6 */ + + /* User can add his own implementation to report the file name and line number, + ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */ + + /* Infinite loop */ + while (1) + { + } + /* USER CODE END 6 */ +} +#endif /* USE_FULL_ASSERT */ + +/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/ |