diff options
Diffstat (limited to 'Projects/NUCLEO-WB35CE/Examples_LL/WWDG/WWDG_RefreshUntilUserEvent_Init/Src/main.c')
-rw-r--r-- | Projects/NUCLEO-WB35CE/Examples_LL/WWDG/WWDG_RefreshUntilUserEvent_Init/Src/main.c | 346 |
1 files changed, 346 insertions, 0 deletions
diff --git a/Projects/NUCLEO-WB35CE/Examples_LL/WWDG/WWDG_RefreshUntilUserEvent_Init/Src/main.c b/Projects/NUCLEO-WB35CE/Examples_LL/WWDG/WWDG_RefreshUntilUserEvent_Init/Src/main.c new file mode 100644 index 000000000..5497cad8f --- /dev/null +++ b/Projects/NUCLEO-WB35CE/Examples_LL/WWDG/WWDG_RefreshUntilUserEvent_Init/Src/main.c @@ -0,0 +1,346 @@ +/* USER CODE BEGIN Header */ +/** + ****************************************************************************** + * @file Examples_LL/WWDG/WWDG_RefreshUntilUserEvent_Init/Src/main.c + * @author MCD Application Team + * @brief This example describes how to configure WWDG down-counter (with Window) + * using the STM32WBxx WWDG LL API. + * Peripheral initialization done using LL unitary services functions. + ****************************************************************************** + * @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 */ + +/* USER CODE END PD */ + +/* Private macro -------------------------------------------------------------*/ +/* USER CODE BEGIN PM */ + +/* USER CODE END PM */ + +/* Private variables ---------------------------------------------------------*/ + +/* USER CODE BEGIN PV */ +static __IO uint8_t KeyPressed = 0; +/* USER CODE END PV */ + +/* Private function prototypes -----------------------------------------------*/ +void SystemClock_Config(void); +static void MX_GPIO_Init(void); +static void MX_WWDG_Init(void); +/* USER CODE BEGIN PFP */ +void UserButton_Callback(void); +void Check_WWDG_Reset(void); +void LED_On(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 */ + /* USER CODE END 1 */ + + /* MCU Configuration--------------------------------------------------------*/ + + /* Reset of all peripherals, Initializes the Flash interface and the Systick. */ + + + NVIC_SetPriorityGrouping(NVIC_PRIORITYGROUP_4); + + /* System interrupt init*/ + + /* USER CODE BEGIN Init */ + + /* USER CODE END Init */ + + /* Configure the system clock */ + SystemClock_Config(); + + /* USER CODE BEGIN SysInit */ + + /* Check if the system has resumed from WWDG reset*/ + Check_WWDG_Reset(); + + /* USER CODE END SysInit */ + + /* Initialize all configured peripherals */ + MX_GPIO_Init(); + MX_WWDG_Init(); + /* USER CODE BEGIN 2 */ + + /* USER CODE END 2 */ + + /* Infinite loop */ + /* USER CODE BEGIN WHILE */ + while (1) + { + if (1 != KeyPressed) + { + /* Refresh WWDG Downcounter to initial value ~2s*/ + LL_WWDG_SetCounter(WWDG, 0X7E); + + LL_GPIO_TogglePin(LED2_GPIO_Port, LED2_Pin); + LL_mDelay(LED_BLINK_FAST); + } + /* USER CODE END WHILE */ + + /* USER CODE BEGIN 3 */ + } + /* USER CODE END 3 */ +} + +/** + * @brief System Clock Configuration + * @retval None + */ +void SystemClock_Config(void) +{ + LL_FLASH_SetLatency(LL_FLASH_LATENCY_3); + + /* MSI configuration and activation */ + LL_RCC_MSI_Enable(); + while(LL_RCC_MSI_IsReady() != 1) + { + }; + + /* Main PLL configuration and activation */ + LL_RCC_PLL_ConfigDomain_SYS(LL_RCC_PLLSOURCE_MSI, LL_RCC_PLLM_DIV_1, 32, LL_RCC_PLLR_DIV_2); + LL_RCC_PLL_Enable(); + LL_RCC_PLL_EnableDomain_SYS(); + while(LL_RCC_PLL_IsReady() != 1) + { + }; + + /* Sysclk activation on the main PLL */ + /* Set CPU1 prescaler*/ + LL_RCC_SetAHBPrescaler(LL_RCC_SYSCLK_DIV_1); + + /* Set CPU2 prescaler*/ + LL_C2_RCC_SetAHBPrescaler(LL_RCC_SYSCLK_DIV_2); + + LL_RCC_SetSysClkSource(LL_RCC_SYS_CLKSOURCE_PLL); + while(LL_RCC_GetSysClkSource() != LL_RCC_SYS_CLKSOURCE_STATUS_PLL) + { + }; + + /* Set AHB SHARED prescaler*/ + LL_RCC_SetAHB4Prescaler(LL_RCC_SYSCLK_DIV_1); + + /* Set APB1 prescaler*/ + LL_RCC_SetAPB1Prescaler(LL_RCC_APB1_DIV_1); + + /* Set APB2 prescaler*/ + LL_RCC_SetAPB2Prescaler(LL_RCC_APB2_DIV_1); + + LL_Init1msTick(64000000); + + /* Update CMSIS variable (which can be updated also through SystemCoreClockUpdate function) */ + LL_SetSystemCoreClock(64000000); + /* USER CODE BEGIN Smps */ + + /* USER CODE END Smps */ +} + +/** + * @brief WWDG Initialization Function + * @param None + * @retval None + */ +static void MX_WWDG_Init(void) +{ + + /* USER CODE BEGIN WWDG_Init 0 */ + + /* USER CODE END WWDG_Init 0 */ + + /* Peripheral clock enable */ + LL_APB1_GRP1_EnableClock(LL_APB1_GRP1_PERIPH_WWDG); + + /* USER CODE BEGIN WWDG_Init 1 */ + + /* Configure WWDG */ + + /* Refresh WWDG before activate it */ + /* Activate WWDG */ + /* set prescaler to have a rollover each about ~2s */ + /* set window value to same value (~2s) as downcounter in order to ba able to refresh the WWDG almost immediately */ + + /* USER CODE END WWDG_Init 1 */ + LL_WWDG_SetCounter(WWDG, 126); + LL_WWDG_Enable(WWDG); + LL_WWDG_SetPrescaler(WWDG, LL_WWDG_PRESCALER_64); + LL_WWDG_SetWindow(WWDG, 126); + /* USER CODE BEGIN WWDG_Init 2 */ + + /* USER CODE END WWDG_Init 2 */ + +} + +/** + * @brief GPIO Initialization Function + * @param None + * @retval None + */ +static void MX_GPIO_Init(void) +{ + LL_EXTI_InitTypeDef EXTI_InitStruct = {0}; + LL_GPIO_InitTypeDef GPIO_InitStruct = {0}; + + /* GPIO Ports Clock Enable */ + LL_AHB2_GRP1_EnableClock(LL_AHB2_GRP1_PERIPH_GPIOA); + LL_AHB2_GRP1_EnableClock(LL_AHB2_GRP1_PERIPH_GPIOB); + + /**/ + LL_GPIO_ResetOutputPin(LED2_GPIO_Port, LED2_Pin); + + /**/ + LL_SYSCFG_SetEXTISource(LL_SYSCFG_EXTI_PORTA, LL_SYSCFG_EXTI_LINE0); + + /**/ + EXTI_InitStruct.Line_0_31 = LL_EXTI_LINE_0; + EXTI_InitStruct.Line_32_63 = LL_EXTI_LINE_NONE; + EXTI_InitStruct.LineCommand = ENABLE; + EXTI_InitStruct.Mode = LL_EXTI_MODE_IT; + EXTI_InitStruct.Trigger = LL_EXTI_TRIGGER_FALLING; + LL_EXTI_Init(&EXTI_InitStruct); + + /**/ + LL_GPIO_SetPinPull(GPIOA, LL_GPIO_PIN_0, LL_GPIO_PULL_UP); + + /**/ + LL_GPIO_SetPinMode(GPIOA, LL_GPIO_PIN_0, LL_GPIO_MODE_INPUT); + + /**/ + GPIO_InitStruct.Pin = LED2_Pin; + GPIO_InitStruct.Mode = LL_GPIO_MODE_OUTPUT; + GPIO_InitStruct.Speed = LL_GPIO_SPEED_FREQ_LOW; + GPIO_InitStruct.OutputType = LL_GPIO_OUTPUT_PUSHPULL; + GPIO_InitStruct.Pull = LL_GPIO_PULL_NO; + LL_GPIO_Init(LED2_GPIO_Port, &GPIO_InitStruct); + + /* EXTI interrupt init*/ + NVIC_SetPriority(EXTI0_IRQn, NVIC_EncodePriority(NVIC_GetPriorityGrouping(),0, 0)); + NVIC_EnableIRQ(EXTI0_IRQn); + +} + +/* USER CODE BEGIN 4 */ + +/** + * @brief This function check if the system has resumed from WWDG reset + * @param None + * @retval None + */ +void Check_WWDG_Reset(void) +{ + if (LL_RCC_IsActiveFlag_WWDGRST()) + { + /* clear WWDG reset flag */ + LL_RCC_ClearResetFlags(); + + /* Re-Initialize GPIO configured peripheral */ + MX_GPIO_Init(); + + /* turn Led on and wait for user event to perform example again */ + LED_On(); + + while(KeyPressed != 1) + { + } + + /* Reset KeyPressed value */ + KeyPressed = 0; + } +} + + +/** + * @brief Turn-on LED2. + * @param None + * @retval None + */ +void LED_On(void) +{ + /* Turn LED2 on */ + LL_GPIO_SetOutputPin(LED2_GPIO_Port, LED2_Pin); +} + + +/******************************************************************************/ +/* USER IRQ HANDLER TREATMENT */ +/******************************************************************************/ +/** + * @brief Function to manage IRQ Handler + * @param None + * @retval None + */ +void UserButton_Callback(void) +{ + KeyPressed = 1; +} +/* 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 */ + /* User can add his own implementation to report the HAL error return state */ + + /* 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, + tex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */ + /* USER CODE END 6 */ +} +#endif /* USE_FULL_ASSERT */ + +/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/ |