feat: exti trigger example

Examples/LL/GPIO/EXTI_Toggle/main.c

@@ -0,0 +1,95 @@
+/***
+ * Demo: EXTI Interrupt
+ */
+#include "main.h"
+#include "py32f0xx_bsp_button.h"
+#include "py32f0xx_bsp_led.h"
+#include "py32f0xx_bsp_printf.h"
+
+static void APP_SystemClockConfig(void);
+static void APP_GpioConfig(void);
+static void APP_ConfigureEXTI(void);
+
+
+int main(void)
+{
+  APP_SystemClockConfig();
+
+  APP_GpioConfig();
+  APP_ConfigureEXTI();
+
+  while (1);
+}
+
+static void APP_SystemClockConfig(void)
+{
+  LL_RCC_HSI_Enable();
+  while(LL_RCC_HSI_IsReady() != 1);
+
+  LL_RCC_SetAHBPrescaler(LL_RCC_SYSCLK_DIV_1);
+  LL_RCC_SetSysClkSource(LL_RCC_SYS_CLKSOURCE_HSISYS);
+  while(LL_RCC_GetSysClkSource() != LL_RCC_SYS_CLKSOURCE_STATUS_HSISYS);
+
+  LL_RCC_SetAPB1Prescaler(LL_RCC_APB1_DIV_1);
+  LL_Init1msTick(8000000);
+  LL_SetSystemCoreClock(8000000);
+}
+
+static void APP_GpioConfig(void)
+{
+  /* Enable GPIOB Clock */
+  LL_IOP_GRP1_EnableClock(LL_IOP_GRP1_PERIPH_GPIOB);
+  /* PB5 as output */
+  LL_GPIO_SetPinMode(GPIOB, LL_GPIO_PIN_5, LL_GPIO_MODE_OUTPUT);
+}
+
+static void APP_ConfigureEXTI(void)
+{
+  /* Enable GPIOA Clock */
+  LL_IOP_GRP1_EnableClock(LL_IOP_GRP1_PERIPH_GPIOA);
+
+  /* PA12 as input */
+  LL_GPIO_InitTypeDef GPIO_InitStruct;
+  GPIO_InitStruct.Pin = LL_GPIO_PIN_12;
+  GPIO_InitStruct.Mode = LL_GPIO_MODE_INPUT;
+  GPIO_InitStruct.Pull = LL_GPIO_PULL_UP;
+  LL_GPIO_Init(GPIOA, &GPIO_InitStruct);
+
+  /* Triggerred by falling edge */
+  LL_EXTI_InitTypeDef EXTI_InitStruct;
+  EXTI_InitStruct.Line = LL_EXTI_LINE_12;
+  EXTI_InitStruct.LineCommand = ENABLE;
+  EXTI_InitStruct.Mode = LL_EXTI_MODE_IT;
+  EXTI_InitStruct.Trigger = LL_EXTI_TRIGGER_FALLING;
+  LL_EXTI_Init(&EXTI_InitStruct);
+
+  /**
+   * Enable interrupt
+   * - EXTI0_1_IRQn for PA/PB/PC[0,1]
+   * - EXTI2_3_IRQn for PA/PB/PC[2,3]
+   * - EXTI4_15_IRQn for PA/PB/PC[4,15]
+  */
+  NVIC_SetPriority(EXTI4_15_IRQn, 0);
+  NVIC_EnableIRQ(EXTI4_15_IRQn);
+}
+
+void EXTI4_15_IRQHandler(void)
+{
+  if(LL_EXTI_IsActiveFlag(LL_EXTI_LINE_12))
+  {
+    LL_GPIO_TogglePin(GPIOB, LL_GPIO_PIN_5);
+    LL_EXTI_ClearFlag(LL_EXTI_LINE_12);
+  }
+}
+
+void APP_ErrorHandler(void)
+{
+  while (1);
+}
+
+#ifdef  USE_FULL_ASSERT
+void assert_failed(uint8_t *file, uint32_t line)
+{
+  while (1);
+}
+#endif /* USE_FULL_ASSERT */

Examples/LL/GPIO/EXTI_Toggle/main.h

@@ -0,0 +1,55 @@
+/**
+  ******************************************************************************
+  * @file    main.h
+  * @author  MCU Application Team
+  * @brief   Header for main.c file.
+  *          This file contains the common defines of the application.
+  ******************************************************************************
+  * @attention
+  *
+  * <h2><center>&copy; Copyright (c) Puya Semiconductor Co.
+  * All rights reserved.</center></h2>
+  *
+  * <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
+  *
+  ******************************************************************************
+  */
+
+/* Define to prevent recursive inclusion -------------------------------------*/
+#ifndef __MAIN_H
+#define __MAIN_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Includes ------------------------------------------------------------------*/
+#include "py32f0xx_ll_rcc.h"
+#include "py32f0xx_ll_bus.h"
+#include "py32f0xx_ll_system.h"
+#include "py32f0xx_ll_exti.h"
+#include "py32f0xx_ll_cortex.h"
+#include "py32f0xx_ll_utils.h"
+#include "py32f0xx_ll_pwr.h"
+#include "py32f0xx_ll_dma.h"
+#include "py32f0xx_ll_gpio.h"
+
+/* Private includes ----------------------------------------------------------*/
+/* Private defines -----------------------------------------------------------*/
+/* Exported variables prototypes ---------------------------------------------*/
+/* Exported functions prototypes ---------------------------------------------*/
+void APP_ErrorHandler(void);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __MAIN_H */
+
+/************************ (C) COPYRIGHT Puya *****END OF FILE******************/

Examples/LL/GPIO/EXTI_Toggle/py32f0xx_it.c

@@ -0,0 +1,84 @@
+/**
+  ******************************************************************************
+  * @file    py32f0xx_it.c
+  * @author  MCU Application Team
+  * @brief   Interrupt Service Routines.
+  ******************************************************************************
+  * @attention
+  *
+  * <h2><center>&copy; Copyright (c) Puya Semiconductor Co.
+  * All rights reserved.</center></h2>
+  *
+  * <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
+  *
+  ******************************************************************************
+  */
+
+/* Includes ------------------------------------------------------------------*/
+#include "main.h"
+#include "py32f0xx_it.h"
+
+/* Private includes ----------------------------------------------------------*/
+/* Private typedef -----------------------------------------------------------*/
+/* Private define ------------------------------------------------------------*/
+/* Private macro -------------------------------------------------------------*/
+/* Private variables ---------------------------------------------------------*/
+/* Private function prototypes -----------------------------------------------*/
+/* Private user code ---------------------------------------------------------*/
+/* External variables --------------------------------------------------------*/
+
+/******************************************************************************/
+/*           Cortex-M0+ Processor Interruption and Exception Handlers         */
+/******************************************************************************/
+/**
+  * @brief This function handles Non maskable interrupt.
+  */
+void NMI_Handler(void)
+{
+}
+
+/**
+  * @brief This function handles Hard fault interrupt.
+  */
+void HardFault_Handler(void)
+{
+  while (1)
+  {
+  }
+}
+
+/**
+  * @brief This function handles System service call via SWI instruction.
+  */
+void SVC_Handler(void)
+{
+}
+
+/**
+  * @brief This function handles Pendable request for system service.
+  */
+void PendSV_Handler(void)
+{
+}
+
+/**
+  * @brief This function handles System tick timer.
+  */
+void SysTick_Handler(void)
+{
+}
+
+/******************************************************************************/
+/* PY32F0xx 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.                                          */
+/******************************************************************************/
+
+/************************ (C) COPYRIGHT Puya *****END OF FILE******************/

Examples/LL/GPIO/EXTI_Toggle/py32f0xx_it.h

@@ -0,0 +1,49 @@
+/**
+  ******************************************************************************
+  * @file    py32f0xx_it.h
+  * @author  MCU Application Team
+  * @brief   This file contains the headers of the interrupt handlers.
+  ******************************************************************************
+  * @attention
+  *
+  * <h2><center>&copy; Copyright (c) Puya Semiconductor Co.
+  * All rights reserved.</center></h2>
+  *
+  * <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
+  *
+  ******************************************************************************
+  */
+
+
+/* Define to prevent recursive inclusion -------------------------------------*/
+#ifndef __PY32F0XX_IT_H
+#define __PY32F0XX_IT_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Private includes ----------------------------------------------------------*/
+/* Exported types ------------------------------------------------------------*/
+/* Exported constants --------------------------------------------------------*/
+/* Exported macro ------------------------------------------------------------*/
+/* Exported functions prototypes ---------------------------------------------*/
+void NMI_Handler(void);
+void HardFault_Handler(void);
+void SVC_Handler(void);
+void PendSV_Handler(void);
+void SysTick_Handler(void);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __PY32F0XX_IT_H */
+
+/************************ (C) COPYRIGHT Puya *****END OF FILE******************/