kopia lustrzana https://github.com/OpenRTX/OpenRTX
114 wiersze
3.4 KiB
C
114 wiersze
3.4 KiB
C
/***************************************************************************
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* Copyright (C) 2024 - 2025 by Silvano Seva IU2KWO *
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 3 of the License, or *
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* (at your option) any later version. *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU General Public License for more details. *
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* *
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* You should have received a copy of the GNU General Public License *
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* along with this program; if not, see <http://www.gnu.org/licenses/> *
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***************************************************************************/
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#ifndef GPIO_STM32_H
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#define GPIO_STM32_H
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#include <peripherals/gpio.h>
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#include <stdint.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* This file provides the interface for STM32 gpio.
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*/
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/**
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* Maximum GPIO switching speed.
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* For more details see microcontroller's reference manual and datasheet.
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*/
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enum Speed
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{
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LOW = 0x0, ///< 2MHz
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MEDIUM = 0x1, ///< 25MHz
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FAST = 0x2, ///< 50MHz
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HIGH = 0x3 ///< 100MHz
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};
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/**
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* STM32 gpio devices
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*/
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extern const struct gpioDev GpioA;
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extern const struct gpioDev GpioB;
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extern const struct gpioDev GpioC;
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extern const struct gpioDev GpioD;
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extern const struct gpioDev GpioE;
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/**
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* Configure gpio pin functional mode.
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*
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* @param port: gpio port.
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* @param pin: gpio pin number, between 0 and 15.
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* @param mode: bit 7:0 set gpio functional mode, bit 15:8 manage gpio alternate
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* function mapping.
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*/
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void gpio_setMode(const void *port, const uint8_t pin, const uint16_t mode);
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/**
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* Configure gpio pin maximum output speed.
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*
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* @param port: gpio port.
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* @param pin: gpio pin number, between 0 and 15.
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* @param spd: gpio output speed to be set.
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*/
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void gpio_setOutputSpeed(const void *port, const uint8_t pin, const enum Speed spd);
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/**
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* Set gpio pin to high logic level.
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* NOTE: this operation is performed atomically.
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*
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* @param port: gpio port.
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* @param pin: gpio pin number, between 0 and 15.
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*/
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static inline void gpio_setPin(const void *port, const uint8_t pin)
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{
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((GPIO_TypeDef *)(port))->BSRR = (1 << pin);
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}
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/**
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* Set gpio pin to low logic level.
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* NOTE: this operation is performed atomically.
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*
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* @param port: gpio port.
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* @param pin: gpio pin number, between 0 and 15.
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*/
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static inline void gpio_clearPin(const void *port, const uint8_t pin)
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{
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((GPIO_TypeDef *)(port))->BSRR = (1 << (pin + 16));
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}
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/**
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* Read gpio pin's logic level.
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*
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* @param port: gpio port.
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* @param pin: gpio pin number, between 0 and 15.
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* @return 1 if pin is at high logic level, 0 if pin is at low logic level.
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*/
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static inline uint8_t gpio_readPin(const void *port, const uint8_t pin)
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{
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GPIO_TypeDef *p = (GPIO_TypeDef *)(port);
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return ((p->IDR & (1 << pin)) != 0) ? 1 : 0;
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}
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#ifdef __cplusplus
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}
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#endif
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#endif /* GPIO_STM32_H */
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