STM8L15x的GPIO调试实验_LED灯的自行翻转（IAR）

/** ****************************************************************************** * @file stm8l15x_gpio.c * @author MCD Application Team * @version V1.4.0 * @date 09/24/2010 * @brief This file provides all the GPIO firmware functions. ****************************************************************************** * @copy * * THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS * WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE * TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY * DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING * FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE * CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS. * * <h2><center>&copy; COPYRIGHT 2010 STMicroelectronics</center></h2> */ /* Includes ------------------------------------------------------------------*/ #include "stm8l15x_gpio.h" /** @addtogroup STM8L15x_StdPeriph_Driver * @{ */ /* Private typedef -----------------------------------------------------------*/ /* Private define ------------------------------------------------------------*/ /* Private macro -------------------------------------------------------------*/ /* Private variables ---------------------------------------------------------*/ /* Private function prototypes -----------------------------------------------*/ /* Private functions ---------------------------------------------------------*/ /** * @addtogroup GPIO_Public_Functions * @{ */ /** * @brief Deinitializes the GPIOx peripheral registers to their default reset values. * @param GPIOx: Select the GPIO peripheral number (x = A to I). * @retval None */ void GPIO_DeInit(GPIO_TypeDef* GPIOx) { GPIOx->CR2 = GPIO_CR2_RESET_VALUE; /* Reset Control Register 2 */ GPIOx->ODR = GPIO_ODR_RESET_VALUE; /* Reset Output Data Register */ GPIOx->DDR = GPIO_DDR_RESET_VALUE; /* Reset Data Direction Register */ GPIOx->CR1 = GPIO_CR1_RESET_VALUE; /* Reset Control Register 1 */ } /** * @brief Initializes the GPIOx according to the specified parameters. * @param GPIOx : Select the GPIO peripheral number (x = A to I). * @param GPIO_Pin : This parameter contains the pin number, it can be any value * of the @ref GPIO_Pin_TypeDef enumeration. * @param GPIO_Mode : This parameter can be a value of the * @Ref GPIO_Mode_TypeDef enumeration. * @retval None */ void GPIO_Init(GPIO_TypeDef* GPIOx, uint8_t GPIO_Pin, GPIO_Mode_TypeDef GPIO_Mode) { /*----------------------*/ /* Check the parameters */ /*----------------------*/ //assert_param(IS_GPIO_MODE(GPIO_Mode)); // assert_param(IS_GPIO_PIN(GPIO_Pin)); /* Reset crresponding bit to GPIO_Pin in CR2 register */ GPIOx->CR2 &= (uint8_t)(~(GPIO_Pin)); /*-----------------------------*/ /* Input/Output mode selection */ /*-----------------------------*/ if ((((uint8_t)(GPIO_Mode)) & (uint8_t)0x80) != (uint8_t)0x00) /* Output mode */ { if ((((uint8_t)(GPIO_Mode)) & (uint8_t)0x10) != (uint8_t)0x00) /* High level */ { GPIOx->ODR |= GPIO_Pin; } else /* Low level */ { GPIOx->ODR &= (uint8_t)(~(GPIO_Pin)); } /* Set Output mode */ GPIOx->DDR |= GPIO_Pin; } else /* Input mode */ { /* Set Input mode */ GPIOx->DDR &= (uint8_t)(~(GPIO_Pin)); } /*------------------------------------------------------------------------*/ /* Pull-Up/Float (Input) or Push-Pull/Open-Drain (Output) modes selection */ /*------------------------------------------------------------------------*/ if ((((uint8_t)(GPIO_Mode)) & (uint8_t)0x40) != (uint8_t)0x00) /* Pull-Up or Push-Pull */ { GPIOx->CR1 |= GPIO_Pin; } else /* Float or Open-Drain */ { GPIOx->CR1 &= (uint8_t)(~(GPIO_Pin)); } /*-----------------------------------------------------*/ /* Interrupt (Input) or Slope (Output) modes selection */ /*-----------------------------------------------------*/ if ((((uint8_t)(GPIO_Mode)) & (uint8_t)0x20) != (uint8_t)0x00) /* Interrupt or Slow slope */ { GPIOx->CR2 |= GPIO_Pin; } else /* No external interrupt or No slope control */ { GPIOx->CR2 &= (uint8_t)(~(GPIO_Pin)); } } /** * @brief Writes data to the specified GPIO data port. * @note The port must be configured in output mode. * @param GPIOx : Select the GPIO peripheral number (x = A to I). * @param GPIO_PortVal : Specifies the value to be written to the port output * data register. * @retval None */ void GPIO_Write(GPIO_TypeDef* GPIOx, uint8_t GPIO_PortVal) { GPIOx->ODR = GPIO_PortVal; } /** * @brief Sets or clears the selected data port bit. * @param GPIOx : Select the GPIO peripheral number (x = A to I). * @param GPIO_Pin: Specifies the port bit to be written. * This parameter can be a value of GPIO_Pin_TypeDef enumeration. * @param GPIO_BitVal: specifies the desired status to be written. * This parameter can be a value of @ref BitAction enumeration. * @retval None */ void GPIO_WriteBit(GPIO_TypeDef* GPIOx, GPIO_Pin_TypeDef GPIO_Pin, BitAction GPIO_BitVal) { /* Check the parameters */ //assert_param(IS_GPIO_PIN(GPIO_Pin)); // assert_param(IS_STATE_VALUE(GPIO_BitVal)); if (GPIO_BitVal != RESET) { GPIOx->ODR |= GPIO_Pin; } else { GPIOx->ODR &= (uint8_t)(~GPIO_Pin); } } /** * @brief Writes high level to the specified GPIO pins. * @note The port must be configured in output mode. * @param GPIOx : Select the GPIO peripheral number (x = A to I). * @param GPIO_Pin : Specifies the pins to be turned high. * @retval None */ void GPIO_SetBits(GPIO_TypeDef* GPIOx, uint8_t GPIO_Pin) { GPIOx->ODR |= GPIO_Pin; } /** * @brief Writes low level to the specified GPIO pins. * @param GPIOx : Select the GPIO peripheral number (x = A to I). * @param GPIO_Pin : Specifies the pins to be turned low * @retval None * @par Required preconditions: * The port must be configured in output mode. */ void GPIO_ResetBits(GPIO_TypeDef* GPIOx, uint8_t GPIO_Pin) { GPIOx->ODR &= (uint8_t)(~GPIO_Pin); } /** * @brief Toggles the specified GPIO pins. * @note The port must be configured in output mode. * @param GPIOx : Select the GPIO peripheral number (x = A to I). * @param GPIO_Pin : Specifies the pins to be toggled. * @retval None */ void GPIO_ToggleBits(GPIO_TypeDef* GPIOx, uint8_t GPIO_Pin) { GPIOx->ODR ^= GPIO_Pin; } /** * @brief Reads the specified GPIO input data port. * @note The port must be configured in input mode. * @param GPIOx : Select the GPIO peripheral number (x = A to I). * @retval The GPIOx input data port value. */ uint8_t GPIO_ReadInputData(GPIO_TypeDef* GPIOx) { return ((uint8_t)GPIOx->IDR); } /** * @brief Reads the specified GPIO output data port. * @note The port must be configured in input mode. * @param GPIOx : Select the GPIO peripheral number (x = A to I). * @retval The GPIOx output data port value. */ uint8_t GPIO_ReadOutputData(GPIO_TypeDef* GPIOx) { return ((uint8_t)GPIOx->ODR); } /** * @brief Reads the specified GPIO input data pin. * @param GPIOx : Select the GPIO peripheral number (x = A to I). * @param GPIO_Pin : Specifies the pin number. * @retval BitStatus : GPIO input pin status. */ BitStatus GPIO_ReadInputDataBit(GPIO_TypeDef* GPIOx, GPIO_Pin_TypeDef GPIO_Pin) { return ((BitStatus)(GPIOx->IDR & (uint8_t)GPIO_Pin)); } /** * @brief Reads the specified GPIO Output data pin. * @param GPIOx : Select the GPIO peripheral number (x = A to I). * @param GPIO_Pin : Specifies the pi