added blink example

4 files changed, 552 insertions, 0 deletions

diff --git a/Blink/Src/main.c b/Blink/Src/main.c
new file mode 100644
index 0000000..6c4dc28
--- /dev/null
+++ b/Blink/Src/main.c
@@ -0,0 +1,58 @@
+

+#include "main.h"

+

+void SystemClock_Config(void);

+static void MX_GPIO_Init(void);

+

+int main(void)

+{

+  HAL_Init();

+  SystemClock_Config();

+

+  MX_GPIO_Init();

+

+  while (1)

+  {

+    HAL_GPIO_WritePin(GPIOB,GPIO_PIN_13,1);

+    HAL_Delay(1000);

+    HAL_GPIO_WritePin(GPIOB,GPIO_PIN_13,0);

+    HAL_Delay(1000);

+  }

+}

+

+void SystemClock_Config(void)

+{

+  RCC_OscInitTypeDef RCC_OscInitStruct = {0};

+  RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};

+

+  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI;

+  RCC_OscInitStruct.HSIState = RCC_HSI_ON;

+  RCC_OscInitStruct.HSICalibrationValue = RCC_HSICALIBRATION_DEFAULT;

+  RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE;

+  HAL_RCC_OscConfig(&RCC_OscInitStruct);

+

+  RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK

+                              |RCC_CLOCKTYPE_PCLK1;

+  RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_HSI;

+  RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;

+  RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;

+

+  HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_0);

+}

+

+static void MX_GPIO_Init(void)

+{

+  GPIO_InitTypeDef GPIO_InitStruct = {0};

+

+  __HAL_RCC_GPIOB_CLK_ENABLE();

+  __HAL_RCC_GPIOA_CLK_ENABLE();

+

+  HAL_GPIO_WritePin(GPIOB, GPIO_PIN_13, GPIO_PIN_RESET);

+

+  GPIO_InitStruct.Pin = GPIO_PIN_13;

+  GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;

+  GPIO_InitStruct.Pull = GPIO_NOPULL;

+  GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;

+  HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);

+

+}

diff --git a/Blink/Src/stm32f0xx_hal_msp.c b/Blink/Src/stm32f0xx_hal_msp.c
new file mode 100644
index 0000000..5fa4162
--- /dev/null
+++ b/Blink/Src/stm32f0xx_hal_msp.c
@@ -0,0 +1,84 @@
+/* USER CODE BEGIN Header */

+/**

+  ******************************************************************************

+  * File Name          : stm32f0xx_hal_msp.c

+  * Description        : This file provides code for the MSP Initialization 

+  *                      and de-Initialization codes.

+  ******************************************************************************

+  * @attention

+  *

+  * <h2><center>&copy; Copyright (c) 2020 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"

+/* USER CODE BEGIN Includes */

+

+/* USER CODE END Includes */

+

+/* Private typedef -----------------------------------------------------------*/

+/* USER CODE BEGIN TD */

+

+/* USER CODE END TD */

+

+/* Private define ------------------------------------------------------------*/

+/* USER CODE BEGIN Define */

+ 

+/* USER CODE END Define */

+

+/* Private macro -------------------------------------------------------------*/

+/* USER CODE BEGIN Macro */

+

+/* USER CODE END Macro */

+

+/* Private variables ---------------------------------------------------------*/

+/* USER CODE BEGIN PV */

+

+/* USER CODE END PV */

+

+/* Private function prototypes -----------------------------------------------*/

+/* USER CODE BEGIN PFP */

+

+/* USER CODE END PFP */

+

+/* External functions --------------------------------------------------------*/

+/* USER CODE BEGIN ExternalFunctions */

+

+/* USER CODE END ExternalFunctions */

+

+/* USER CODE BEGIN 0 */

+

+/* USER CODE END 0 */

+/**

+  * Initializes the Global MSP.

+  */

+void HAL_MspInit(void)

+{

+  /* USER CODE BEGIN MspInit 0 */

+

+  /* USER CODE END MspInit 0 */

+

+  __HAL_RCC_SYSCFG_CLK_ENABLE();

+  __HAL_RCC_PWR_CLK_ENABLE();

+

+  /* System interrupt init*/

+

+  /* USER CODE BEGIN MspInit 1 */

+

+  /* USER CODE END MspInit 1 */

+}

+

+/* USER CODE BEGIN 1 */

+

+/* USER CODE END 1 */

+

+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/

diff --git a/Blink/Src/stm32f0xx_it.c b/Blink/Src/stm32f0xx_it.c
new file mode 100644
index 0000000..445f4b9
--- /dev/null
+++ b/Blink/Src/stm32f0xx_it.c
@@ -0,0 +1,145 @@
+/* USER CODE BEGIN Header */

+/**

+  ******************************************************************************

+  * @file    stm32f0xx_it.c

+  * @brief   Interrupt Service Routines.

+  ******************************************************************************

+  * @attention

+  *

+  * <h2><center>&copy; Copyright (c) 2020 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"

+#include "stm32f0xx_it.h"

+/* Private includes ----------------------------------------------------------*/

+/* USER CODE BEGIN Includes */

+/* USER CODE END Includes */

+

+/* Private typedef -----------------------------------------------------------*/

+/* USER CODE BEGIN TD */

+

+/* USER CODE END TD */

+

+/* 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 -----------------------------------------------*/

+/* USER CODE BEGIN PFP */

+

+/* USER CODE END PFP */

+

+/* Private user code ---------------------------------------------------------*/

+/* USER CODE BEGIN 0 */

+

+/* USER CODE END 0 */

+

+/* External variables --------------------------------------------------------*/

+

+/* USER CODE BEGIN EV */

+

+/* USER CODE END EV */

+

+/******************************************************************************/

+/*           Cortex-M0 Processor Interruption and Exception Handlers          */ 

+/******************************************************************************/

+/**

+  * @brief This function handles Non maskable interrupt.

+  */

+void NMI_Handler(void)

+{

+  /* USER CODE BEGIN NonMaskableInt_IRQn 0 */

+

+  /* USER CODE END NonMaskableInt_IRQn 0 */

+  /* USER CODE BEGIN NonMaskableInt_IRQn 1 */

+

+  /* USER CODE END NonMaskableInt_IRQn 1 */

+}

+

+/**

+  * @brief This function handles Hard fault interrupt.

+  */

+void HardFault_Handler(void)

+{

+  /* USER CODE BEGIN HardFault_IRQn 0 */

+

+  /* USER CODE END HardFault_IRQn 0 */

+  while (1)

+  {

+    /* USER CODE BEGIN W1_HardFault_IRQn 0 */

+    /* USER CODE END W1_HardFault_IRQn 0 */

+  }

+}

+

+/**

+  * @brief This function handles System service call via SWI instruction.

+  */

+void SVC_Handler(void)

+{

+  /* USER CODE BEGIN SVC_IRQn 0 */

+

+  /* USER CODE END SVC_IRQn 0 */

+  /* USER CODE BEGIN SVC_IRQn 1 */

+

+  /* USER CODE END SVC_IRQn 1 */

+}

+

+/**

+  * @brief This function handles Pendable request for system service.

+  */

+void PendSV_Handler(void)

+{

+  /* USER CODE BEGIN PendSV_IRQn 0 */

+

+  /* USER CODE END PendSV_IRQn 0 */

+  /* USER CODE BEGIN PendSV_IRQn 1 */

+

+  /* USER CODE END PendSV_IRQn 1 */

+}

+

+/**

+  * @brief This function handles System tick timer.

+  */

+void SysTick_Handler(void)

+{

+  /* USER CODE BEGIN SysTick_IRQn 0 */

+

+  /* USER CODE END SysTick_IRQn 0 */

+  HAL_IncTick();

+  /* USER CODE BEGIN SysTick_IRQn 1 */

+

+  /* USER CODE END SysTick_IRQn 1 */

+}

+

+/******************************************************************************/

+/* STM32F0xx Peripheral Interrupt Handlers                                    */

+/* Add here the Interrupt Handlers for the used peripherals.                  */

+/* For the available peripheral interrupt handler names,                      */

+/* please refer to the startup file (startup_stm32f0xx.s).                    */

+/******************************************************************************/

+

+/* USER CODE BEGIN 1 */

+

+/* USER CODE END 1 */

+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/

diff --git a/Blink/Src/system_stm32f0xx.c b/Blink/Src/system_stm32f0xx.c
new file mode 100644
index 0000000..6a3202b
--- /dev/null
+++ b/Blink/Src/system_stm32f0xx.c
@@ -0,0 +1,265 @@
+/**

+  ******************************************************************************

+  * @file    system_stm32f0xx.c

+  * @author  MCD Application Team

+  * @brief   CMSIS Cortex-M0 Device Peripheral Access Layer System Source File.

+  *

+  * 1. This file provides two functions and one global variable to be called from

+  *    user application:

+  *      - SystemInit(): This function is called at startup just after reset and 

+  *                      before branch to main program. This call is made inside

+  *                      the "startup_stm32f0xx.s" file.

+  *

+  *      - SystemCoreClock variable: Contains the core clock (HCLK), it can be used

+  *                                  by the user application to setup the SysTick

+  *                                  timer or configure other parameters.

+  *

+  *      - SystemCoreClockUpdate(): Updates the variable SystemCoreClock and must

+  *                                 be called whenever the core clock is changed

+  *                                 during program execution.

+  *

+  * 2. After each device reset the HSI (8 MHz) is used as system clock source.

+  *    Then SystemInit() function is called, in "startup_stm32f0xx.s" file, to

+  *    configure the system clock before to branch to main program.

+  *

+  * 3. This file configures the system clock as follows:

+  *=============================================================================

+  *                         Supported STM32F0xx device

+  *-----------------------------------------------------------------------------

+  *        System Clock source                    | HSI

+  *-----------------------------------------------------------------------------

+  *        SYSCLK(Hz)                             | 8000000

+  *-----------------------------------------------------------------------------

+  *        HCLK(Hz)                               | 8000000

+  *-----------------------------------------------------------------------------

+  *        AHB Prescaler                          | 1

+  *-----------------------------------------------------------------------------

+  *        APB1 Prescaler                         | 1

+  *-----------------------------------------------------------------------------

+  *=============================================================================

+  ******************************************************************************

+  * @attention

+  *

+  * <h2><center>&copy; Copyright (c) 2016 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

+  *

+  ******************************************************************************

+  */

+

+/** @addtogroup CMSIS

+  * @{

+  */

+

+/** @addtogroup stm32f0xx_system

+  * @{

+  */

+

+/** @addtogroup STM32F0xx_System_Private_Includes

+  * @{

+  */

+

+#include "stm32f0xx.h"

+

+/**

+  * @}

+  */

+

+/** @addtogroup STM32F0xx_System_Private_TypesDefinitions

+  * @{

+  */

+

+/**

+  * @}

+  */

+

+/** @addtogroup STM32F0xx_System_Private_Defines

+  * @{

+  */

+#if !defined  (HSE_VALUE) 

+  #define HSE_VALUE    ((uint32_t)8000000) /*!< Default value of the External oscillator in Hz.

+                                                This value can be provided and adapted by the user application. */

+#endif /* HSE_VALUE */

+

+#if !defined  (HSI_VALUE)

+  #define HSI_VALUE    ((uint32_t)8000000) /*!< Default value of the Internal oscillator in Hz.

+                                                This value can be provided and adapted by the user application. */

+#endif /* HSI_VALUE */

+

+#if !defined (HSI48_VALUE)

+#define HSI48_VALUE    ((uint32_t)48000000) /*!< Default value of the HSI48 Internal oscillator in Hz.

+                                                 This value can be provided and adapted by the user application. */

+#endif /* HSI48_VALUE */

+/**

+  * @}

+  */

+

+/** @addtogroup STM32F0xx_System_Private_Macros

+  * @{

+  */

+

+/**

+  * @}

+  */

+

+/** @addtogroup STM32F0xx_System_Private_Variables

+  * @{

+  */

+  /* This variable is updated in three ways:

+      1) by calling CMSIS function SystemCoreClockUpdate()

+      2) by calling HAL API function HAL_RCC_GetHCLKFreq()

+      3) each time HAL_RCC_ClockConfig() is called to configure the system clock frequency

+         Note: If you use this function to configure the system clock there is no need to

+               call the 2 first functions listed above, since SystemCoreClock variable is 

+               updated automatically.

+  */

+uint32_t SystemCoreClock = 8000000;

+

+const uint8_t AHBPrescTable[16] = {0, 0, 0, 0, 0, 0, 0, 0, 1, 2, 3, 4, 6, 7, 8, 9};

+const uint8_t APBPrescTable[8]  = {0, 0, 0, 0, 1, 2, 3, 4};

+

+/**

+  * @}

+  */

+

+/** @addtogroup STM32F0xx_System_Private_FunctionPrototypes

+  * @{

+  */

+

+/**

+  * @}

+  */

+

+/** @addtogroup STM32F0xx_System_Private_Functions

+  * @{

+  */

+

+/**

+  * @brief  Setup the microcontroller system.

+  * @param  None

+  * @retval None

+  */

+void SystemInit(void)

+{

+  /* NOTE :SystemInit(): This function is called at startup just after reset and 

+                         before branch to main program. This call is made inside

+                         the "startup_stm32f0xx.s" file.

+                         User can setups the default system clock (System clock source, PLL Multiplier

+                         and Divider factors, AHB/APBx prescalers and Flash settings).

+   */

+}

+

+/**

+   * @brief  Update SystemCoreClock variable according to Clock Register Values.

+  *         The SystemCoreClock variable contains the core clock (HCLK), it can

+  *         be used by the user application to setup the SysTick timer or configure

+  *         other parameters.

+  *

+  * @note   Each time the core clock (HCLK) changes, this function must be called

+  *         to update SystemCoreClock variable value. Otherwise, any configuration

+  *         based on this variable will be incorrect.

+  *

+  * @note   - The system frequency computed by this function is not the real

+  *           frequency in the chip. It is calculated based on the predefined

+  *           constant and the selected clock source:

+  *

+  *           - If SYSCLK source is HSI, SystemCoreClock will contain the HSI_VALUE(*)

+  *

+  *           - If SYSCLK source is HSE, SystemCoreClock will contain the HSE_VALUE(**)

+  *

+  *           - If SYSCLK source is PLL, SystemCoreClock will contain the HSE_VALUE(**)

+  *             or HSI_VALUE(*) multiplied/divided by the PLL factors.

+  *

+  *         (*) HSI_VALUE is a constant defined in stm32f0xx_hal.h file (default value

+  *             8 MHz) but the real value may vary depending on the variations

+  *             in voltage and temperature.

+  *

+  *         (**) HSE_VALUE is a constant defined in stm32f0xx_hal.h file (default value

+  *              8 MHz), user has to ensure that HSE_VALUE is same as the real

+  *              frequency of the crystal used. Otherwise, this function may

+  *              have wrong result.

+  *

+  *         - The result of this function could be not correct when using fractional

+  *           value for HSE crystal.

+  *

+  * @param  None

+  * @retval None

+  */

+void SystemCoreClockUpdate (void)

+{

+  uint32_t tmp = 0, pllmull = 0, pllsource = 0, predivfactor = 0;

+

+  /* Get SYSCLK source -------------------------------------------------------*/

+  tmp = RCC->CFGR & RCC_CFGR_SWS;

+

+  switch (tmp)

+  {

+    case RCC_CFGR_SWS_HSI:  /* HSI used as system clock */

+      SystemCoreClock = HSI_VALUE;

+      break;

+    case RCC_CFGR_SWS_HSE:  /* HSE used as system clock */

+      SystemCoreClock = HSE_VALUE;

+      break;

+    case RCC_CFGR_SWS_PLL:  /* PLL used as system clock */

+      /* Get PLL clock source and multiplication factor ----------------------*/

+      pllmull = RCC->CFGR & RCC_CFGR_PLLMUL;

+      pllsource = RCC->CFGR & RCC_CFGR_PLLSRC;

+      pllmull = ( pllmull >> 18) + 2;

+      predivfactor = (RCC->CFGR2 & RCC_CFGR2_PREDIV) + 1;

+

+      if (pllsource == RCC_CFGR_PLLSRC_HSE_PREDIV)

+      {

+        /* HSE used as PLL clock source : SystemCoreClock = HSE/PREDIV * PLLMUL */

+        SystemCoreClock = (HSE_VALUE/predivfactor) * pllmull;

+      }

+#if defined(STM32F042x6) || defined(STM32F048xx) || defined(STM32F072xB) || defined(STM32F078xx) || defined(STM32F091xC) || defined(STM32F098xx)

+      else if (pllsource == RCC_CFGR_PLLSRC_HSI48_PREDIV)

+      {

+        /* HSI48 used as PLL clock source : SystemCoreClock = HSI48/PREDIV * PLLMUL */

+        SystemCoreClock = (HSI48_VALUE/predivfactor) * pllmull;

+      }

+#endif /* STM32F042x6 || STM32F048xx || STM32F072xB || STM32F078xx || STM32F091xC || STM32F098xx */

+      else

+      {

+#if defined(STM32F042x6) || defined(STM32F048xx)  || defined(STM32F070x6) \

+ || defined(STM32F078xx) || defined(STM32F071xB)  || defined(STM32F072xB) \

+ || defined(STM32F070xB) || defined(STM32F091xC) || defined(STM32F098xx)  || defined(STM32F030xC)

+        /* HSI used as PLL clock source : SystemCoreClock = HSI/PREDIV * PLLMUL */

+        SystemCoreClock = (HSI_VALUE/predivfactor) * pllmull;

+#else

+        /* HSI used as PLL clock source : SystemCoreClock = HSI/2 * PLLMUL */

+        SystemCoreClock = (HSI_VALUE >> 1) * pllmull;

+#endif /* STM32F042x6 || STM32F048xx || STM32F070x6 || 

+          STM32F071xB || STM32F072xB || STM32F078xx || STM32F070xB ||

+          STM32F091xC || STM32F098xx || STM32F030xC */

+      }

+      break;

+    default: /* HSI used as system clock */

+      SystemCoreClock = HSI_VALUE;

+      break;

+  }

+  /* Compute HCLK clock frequency ----------------*/

+  /* Get HCLK prescaler */

+  tmp = AHBPrescTable[((RCC->CFGR & RCC_CFGR_HPRE) >> 4)];

+  /* HCLK clock frequency */

+  SystemCoreClock >>= tmp;

+}

+

+/**

+  * @}

+  */

+

+/**

+  * @}

+  */

+

+/**

+  * @}

+  */

+

+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/

+