IO operation in IO functions in STM32 STM32

IO operation in IO functions in STM32 STM32 The library function of the STM32 series of microcontroller chips has many kinds, and the library function responsible for the IO operation is GPIO, the GPIO function is declared in the STM32 single-chip file STM32F10X_GPIO.H, which is defined in the main function STM32F10X_GPIO.C of the STM32 single chip. There are 8 configuration types of GPIO, namely: 1.GPIO_MODE_AIN analog input 2.GPIO_MODE_IN_FLOATING Empty Input 3.GPIO_MODE_IPD drop-down input 4.GPIO_MODE_IPU pull-up input 5.GPIO_MODE_OUT_OD Open Log 6.GPIO_MODE_OUT_PP push-pull output 7.GPIO_MODE_AF_OD multiplexing output 8.GPIO_MODE_AF_PP multiplex push output The IO Operation step of the STM32 single-chip microcomputer based on the library function: 1. Enable IO clock Function interface: void RCC_APB2PeriphClockCMD (uint32_t rcc_apb2periph, functionalstate newstate); Parameter list: RCC_APB2PeriPh: Peripheral name connected to the APB2 bus NewState: enanle or disable 2, initialization IO port Function interface: void gpio_init (gpio_typedef * gpiox, gpio_inittypedef * gpio_initstructure); Parameter list: GPIOX: Group of IO, such as GPIOA, GPIOB; GPIO_INITSTRUCT: GPIO initialized structure 3. Call the IO port control function to control the IO port level: Function interface Void gpio_setbits (gpio_typedef * gpiox, uint16_t gpio_pin); Void GPIO_RESETBITS (GPIO_TYPEDEF * GPIOX, UINT16_T GPIO_PIN); Void GPIO_WRITEBIT (GPIO_TYPEDEF * GPIOX, UINT16_T GPIO_PIN, BITACTION BITVAL); Void GPIO_WRITE (GPIO_TYPEDEF * GPIOX, UINT16_T Portval); The above is the IO function of the STM32 microcontroller, I hope to help users. This article integrates from CSDN Responsible for AJX, read the full text

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