diff options
Diffstat (limited to 'Projects/NUCLEO-WB35CE/Examples/CORTEX/CORTEXM_SysTick/Src/main.c')
| -rw-r--r-- | Projects/NUCLEO-WB35CE/Examples/CORTEX/CORTEXM_SysTick/Src/main.c | 242 |
1 files changed, 242 insertions, 0 deletions
diff --git a/Projects/NUCLEO-WB35CE/Examples/CORTEX/CORTEXM_SysTick/Src/main.c b/Projects/NUCLEO-WB35CE/Examples/CORTEX/CORTEXM_SysTick/Src/main.c new file mode 100644 index 000000000..a7179dfd9 --- /dev/null +++ b/Projects/NUCLEO-WB35CE/Examples/CORTEX/CORTEXM_SysTick/Src/main.c @@ -0,0 +1,242 @@ +/* USER CODE BEGIN Header */ +/** + ****************************************************************************** + * @file Cortex/CORTEXM_SysTick/Src/main.c + * @author MCD Application Team + * @brief This example shows how to configure the SysTick. + ****************************************************************************** + * @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 */ + +/* USER CODE END PV */ + +/* Private function prototypes -----------------------------------------------*/ +void SystemClock_Config(void); +/* USER CODE BEGIN PFP */ +/* 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 */ + /* 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 */ + + /* USER CODE END Init */ + + /* Configure the system clock */ + SystemClock_Config(); + + /* USER CODE BEGIN SysInit */ + + /* USER CODE END SysInit */ + + /* Initialize all configured peripherals */ + /* USER CODE BEGIN 2 */ + /* Initialize LEDs */ + BSP_LED_Init(LED2); + BSP_LED_Init(LED1); + BSP_LED_Init(LED3); + + /* Turn on LED2 and LED3 */ + BSP_LED_On(LED2); + BSP_LED_On(LED3); + + /* SysTick Timer is configured by default to generate an interrupt each 1 msec. + --------------------------------------------------------------------------- + 1. The configuration is done using HAL_SYSTICK_Config() located in HAL_Init(). + + 2. The HAL_SYSTICK_Config() function configure: + - The SysTick Reload register with value passed as function parameter. + - Configure the SysTick IRQ priority to the lowest value. + - Reset the SysTick Counter register. + - Configure the SysTick Counter clock source to be Core Clock Source (HCLK). + - Enable the SysTick Interrupt. + - Start the SysTick Counter. + + 3. The SysTick time base 1 msec is computed using the following formula: + + Reload Value = SysTick Counter Clock (Hz) x Desired Time base (s) + + - Reload Value is the parameter to be passed for SysTick_Config() function + - Reload Value should not exceed 0xFFFFFF + + @note: Caution, the SysTick time base 1 msec must not be changed due to use + of these time base by HAL driver. + */ + + /* USER CODE END 2 */ + + /* Infinite loop */ + /* USER CODE BEGIN WHILE */ + while (1) + { + /* USER CODE END WHILE */ + + /* USER CODE BEGIN 3 */ + /* Toggle LED1 */ + BSP_LED_Toggle(LED1); + + /* Insert 50 ms delay */ + HAL_Delay(50); + + /* Toggle LED2 and LED3 */ + BSP_LED_Toggle(LED2); + BSP_LED_Toggle(LED3); + + /* Insert 100 ms delay */ + HAL_Delay(100); + } + /* 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 CPU, AHB and APB busses clocks + */ + 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 */ +/* 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 */ + 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****/ |