133 lines
3.8 KiB
C
133 lines
3.8 KiB
C
/******************************************************************************
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* The MIT License
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*
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* Copyright (c) 2010 Perry Hung.
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*
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* Permission is hereby granted, free of charge, to any person
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* obtaining a copy of this software and associated documentation
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* files (the "Software"), to deal in the Software without
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* restriction, including without limitation the rights to use, copy,
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* modify, merge, publish, distribute, sublicense, and/or sell copies
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* of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*****************************************************************************/
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/**
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* @file gpio.h
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*
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* @brief General purpose I/O (GPIO) and Alternate Function I/O
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* (AFIO) prototypes, defines, and inlined access functions.
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*/
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#ifndef _GPIO_H_
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#define _GPIO_H_
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#include "libmaple.h"
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#include "boards.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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* @brief Get a GPIO port's corresponding afio_exti_port.
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* @param dev GPIO device whose afio_exti_port to return.
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*/
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static inline afio_exti_port gpio_exti_port(const gpio_dev *dev) {
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return dev->exti_port;
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}
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/**
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* Set or reset a GPIO pin.
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*
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* Pin must have previously been configured to output mode.
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*
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* @param dev GPIO device whose pin to set.
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* @param pin Pin on to set or reset
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* @param val If true, set the pin. If false, reset the pin.
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*/
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static inline void gpio_write_pin(uint8_t pin, uint8 val) {
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if (val) {
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(PIN_MAP[pin].gpio_device)->regs->BSRRL = BIT(pin&0x0F);
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} else {
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(PIN_MAP[pin].gpio_device)->regs->BSRRH = BIT(pin&0x0F);
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}
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}
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static inline void gpio_set_pin(uint8_t pin) {
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(PIN_MAP[pin].gpio_device)->regs->BSRRL = BIT(pin&0x0F);
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}
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static inline void gpio_clear_pin(uint8_t pin) {
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(PIN_MAP[pin].gpio_device)->regs->BSRRH = BIT(pin&0x0F);
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}
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/**
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* Determine whether or not a GPIO pin is set.
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*
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* Pin must have previously been configured to input mode.
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*
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* @param dev GPIO device whose pin to test.
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* @param pin Pin on dev to test.
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* @return True if the pin is set, false otherwise.
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*/
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static inline uint32 gpio_read_pin(uint8_t pin) {
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return (PIN_MAP[pin].gpio_device)->regs->IDR & BIT(pin&0x0F);
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}
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/**
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* Toggle a pin configured as output push-pull.
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* @param dev GPIO device.
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* @param pin Pin on dev to toggle.
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*/
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static inline void gpio_toggle_pin(uint8_t pin) {
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(PIN_MAP[pin].gpio_device)->regs->ODR = (PIN_MAP[pin].gpio_device)->regs->ODR ^ BIT(pin&0x0F);
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}
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/*
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* GPIO Convenience routines
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*/
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extern void gpio_init(const gpio_dev *dev);
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extern void gpio_init_all(void);
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extern void gpio_set_mode(uint8_t pin, gpio_pin_mode mode);
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extern void gpio_set_af_mode(uint8_t pin, int mode);
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/*
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* AFIO convenience routines
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*/
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extern void afio_init(void);
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extern void afio_exti_select(afio_exti_num exti, afio_exti_port gpio_port);
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extern void afio_remap(afio_remap_peripheral p);
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/**
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* @brief Enable or disable the JTAG and SW debug ports.
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* @param config Desired debug port configuration
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* @see afio_debug_cfg
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*/
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static inline void afio_cfg_debug_ports(afio_debug_cfg config) {
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//__io uint32 *mapr = &AFIO_BASE->MAPR;
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//*mapr = (*mapr & ~AFIO_MAPR_SWJ_CFG) | config;
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}
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#ifdef __cplusplus
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}
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#endif
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#endif
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