/*!
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\file gd32e23x_gpio.c
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\brief GPIO driver
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\version 2019-02-19, V1.0.0, firmware for GD32E23x
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*/
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/*
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Copyright (c) 2019, GigaDevice Semiconductor Inc.
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All rights reserved.
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Redistribution and use in source and binary forms, with or without modification,
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are permitted provided that the following conditions are met:
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1. Redistributions of source code must retain the above copyright notice, this
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list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright notice,
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this list of conditions and the following disclaimer in the documentation
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and/or other materials provided with the distribution.
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3. Neither the name of the copyright holder nor the names of its contributors
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may be used to endorse or promote products derived from this software without
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specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
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INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
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OF SUCH DAMAGE.
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*/
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#include "gd32e23x_gpio.h"
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/*!
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\brief reset GPIO port
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\param[in] gpio_periph: GPIOx(x = A,B,C,F)
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only one parameter can be selected which is shown as below:
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\arg GPIOx(x = A,B,C,F)
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\param[out] none
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\retval none
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*/
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void gpio_deinit(uint32_t gpio_periph)
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{
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switch(gpio_periph){
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case GPIOA:
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/* reset GPIOA */
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rcu_periph_reset_enable(RCU_GPIOARST);
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rcu_periph_reset_disable(RCU_GPIOARST);
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break;
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case GPIOB:
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/* reset GPIOB */
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rcu_periph_reset_enable(RCU_GPIOBRST);
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rcu_periph_reset_disable(RCU_GPIOBRST);
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break;
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case GPIOC:
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/* reset GPIOC */
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rcu_periph_reset_enable(RCU_GPIOCRST);
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rcu_periph_reset_disable(RCU_GPIOCRST);
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break;
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case GPIOF:
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/* reset GPIOF */
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rcu_periph_reset_enable(RCU_GPIOFRST);
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rcu_periph_reset_disable(RCU_GPIOFRST);
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break;
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default:
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break;
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}
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}
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/*!
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\brief set GPIO mode
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\param[in] gpio_periph: GPIOx(x = A,B,C,F)
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only one parameter can be selected which is shown as below:
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\arg GPIOx(x = A,B,C,F)
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\param[in] mode: gpio pin mode
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\arg GPIO_MODE_INPUT: input mode
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\arg GPIO_MODE_OUTPUT: output mode
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\arg GPIO_MODE_AF: alternate function mode
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\arg GPIO_MODE_ANALOG: analog mode
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\param[in] pull_up_down: gpio pin with pull-up or pull-down resistor
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\arg GPIO_PUPD_NONE: floating mode, no pull-up and pull-down resistors
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\arg GPIO_PUPD_PULLUP: with pull-up resistor
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\arg GPIO_PUPD_PULLDOWN:with pull-down resistor
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\param[in] pin: GPIO pin
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one or more parameters can be selected which are shown as below:
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\arg GPIO_PIN_x(x=0..15), GPIO_PIN_ALL, PB9/PC13 does not exist on GD32E231
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\param[out] none
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\retval none
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*/
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void gpio_mode_set(uint32_t gpio_periph, uint32_t mode, uint32_t pull_up_down, uint32_t pin)
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{
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uint16_t i;
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uint32_t ctl, pupd;
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ctl = GPIO_CTL(gpio_periph);
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pupd = GPIO_PUD(gpio_periph);
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for(i = 0U;i < 16U;i++){
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if((1U << i) & pin){
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/* clear the specified pin mode bits */
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ctl &= ~GPIO_MODE_MASK(i);
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/* set the specified pin mode bits */
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ctl |= GPIO_MODE_SET(i, mode);
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/* clear the specified pin pupd bits */
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pupd &= ~GPIO_PUPD_MASK(i);
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/* set the specified pin pupd bits */
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pupd |= GPIO_PUPD_SET(i, pull_up_down);
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}
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}
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GPIO_CTL(gpio_periph) = ctl;
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GPIO_PUD(gpio_periph) = pupd;
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}
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/*!
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\brief set GPIO output type and speed
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\param[in] gpio_periph: GPIOx(x = A,B,C,F)
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only one parameter can be selected which is shown as below:
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\arg GPIOx(x = A,B,C,F)
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\param[in] otype: gpio pin output mode
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\arg GPIO_OTYPE_PP: push pull mode
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\arg GPIO_OTYPE_OD: open drain mode
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\param[in] speed: gpio pin output max speed
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\arg GPIO_OSPEED_2MHZ: output max speed 2MHz
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\arg GPIO_OSPEED_10MHZ: output max speed 10MHz
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\arg GPIO_OSPEED_50MHZ: output max speed 50MHz
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\param[in] pin: GPIO pin
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one or more parameters can be selected which are shown as below:
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\arg GPIO_PIN_x(x=0..15), GPIO_PIN_ALL, PB9/PC13 does not exist on GD32E231
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\param[out] none
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\retval none
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*/
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void gpio_output_options_set(uint32_t gpio_periph, uint8_t otype, uint32_t speed, uint32_t pin)
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{
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uint16_t i;
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uint32_t ospeed;
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if(GPIO_OTYPE_OD == otype){
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GPIO_OMODE(gpio_periph) |= (uint32_t)pin;
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}else{
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GPIO_OMODE(gpio_periph) &= (uint32_t)(~pin);
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}
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/* get the specified pin output speed bits value */
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ospeed = GPIO_OSPD(gpio_periph);
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for(i = 0U;i < 16U;i++){
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if((1U << i) & pin){
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/* clear the specified pin output speed bits */
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ospeed &= ~GPIO_OSPEED_MASK(i);
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/* set the specified pin output speed bits */
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ospeed |= GPIO_OSPEED_SET(i,speed);
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}
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}
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GPIO_OSPD(gpio_periph) = ospeed;
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}
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/*!
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\brief set GPIO pin bit
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\param[in] gpio_periph: GPIOx(x = A,B,C,F)
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only one parameter can be selected which is shown as below:
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\arg GPIOx(x = A,B,C,F)
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\param[in] pin: GPIO pin
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one or more parameters can be selected which are shown as below:
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\arg GPIO_PIN_x(x=0..15), GPIO_PIN_ALL, PB9/PC13 does not exist on GD32E231
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\param[out] none
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\retval none
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*/
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void gpio_bit_set(uint32_t gpio_periph, uint32_t pin)
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{
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GPIO_BOP(gpio_periph) = (uint32_t)pin;
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}
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/*!
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\brief reset GPIO pin bit
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\param[in] gpio_periph: GPIOx(x = A,B,C,F)
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only one parameter can be selected which is shown as below:
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\arg GPIOx(x = A,B,C,F)
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\param[in] pin: GPIO pin
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one or more parameters can be selected which are shown as below:
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\arg GPIO_PIN_x(x=0..15), GPIO_PIN_ALL, PB9/PC13 does not exist on GD32E231
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\param[out] none
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\retval none
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*/
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void gpio_bit_reset(uint32_t gpio_periph, uint32_t pin)
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{
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GPIO_BC(gpio_periph) = (uint32_t)pin;
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}
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/*!
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\brief write data to the specified GPIO pin
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\param[in] gpio_periph: GPIOx(x = A,B,C,F)
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only one parameter can be selected which is shown as below:
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\arg GPIOx(x = A,B,C,F)
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\param[in] pin: GPIO pin
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one or more parameters can be selected which are shown as below:
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\arg GPIO_PIN_x(x=0..15), GPIO_PIN_ALL, PB9/PC13 does not exist on GD32E231
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\param[in] bit_value: SET or RESET
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\arg RESET: clear the port pin
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\arg SET: set the port pin
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\param[out] none
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\retval none
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*/
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void gpio_bit_write(uint32_t gpio_periph, uint32_t pin, bit_status bit_value)
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{
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if(RESET != bit_value){
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GPIO_BOP(gpio_periph) = (uint32_t)pin;
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}else{
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GPIO_BC(gpio_periph) = (uint32_t)pin;
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}
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}
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/*!
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\brief write data to the specified GPIO port
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\param[in] gpio_periph: GPIOx(x = A,B,C,F)
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only one parameter can be selected which is shown as below:
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\arg GPIOx(x = A,B,C,F)
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\param[in] data: specify the value to be written to the port output control register
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\param[out] none
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\retval none
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*/
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void gpio_port_write(uint32_t gpio_periph, uint16_t data)
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{
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GPIO_OCTL(gpio_periph) = (uint32_t)data;
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}
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/*!
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\brief get GPIO pin input status
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\param[in] gpio_periph: GPIOx(x = A,B,C,F)
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only one parameter can be selected which is shown as below:
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\arg GPIOx(x = A,B,C,F)
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\param[in] pin: GPIO pin
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one or more parameters can be selected which are shown as below:
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\arg GPIO_PIN_x(x=0..15), GPIO_PIN_ALL, PB9/PC13 does not exist on GD32E231
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\param[out] none
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\retval SET or RESET
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*/
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FlagStatus gpio_input_bit_get(uint32_t gpio_periph, uint32_t pin)
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{
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if((uint32_t)RESET != (GPIO_ISTAT(gpio_periph)&(pin))){
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return SET;
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}else{
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return RESET;
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}
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}
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/*!
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\brief get GPIO all pins input status
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\param[in] gpio_periph: GPIOx(x = A,B,C,F)
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only one parameter can be selected which is shown as below:
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\arg GPIOx(x = A,B,C,F)
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\param[out] none
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\retval state of GPIO all pins
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*/
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uint16_t gpio_input_port_get(uint32_t gpio_periph)
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{
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return (uint16_t)GPIO_ISTAT(gpio_periph);
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}
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/*!
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\brief get GPIO pin output status
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\param[in] gpio_periph: GPIOx(x = A,B,C,F)
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only one parameter can be selected which is shown as below:
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\arg GPIOx(x = A,B,C,F)
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\param[in] pin: GPIO pin
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one or more parameters can be selected which are shown as below:
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\arg GPIO_PIN_x(x=0..15), GPIO_PIN_ALL, PB9/PC13 does not exist on GD32E231
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\param[out] none
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\retval SET or RESET
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*/
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FlagStatus gpio_output_bit_get(uint32_t gpio_periph, uint32_t pin)
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{
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if((uint32_t)RESET != (GPIO_OCTL(gpio_periph)&(pin))){
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return SET;
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}else{
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return RESET;
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}
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}
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/*!
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\brief get GPIO all pins output status
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\param[in] gpio_periph: GPIOx(x = A,B,C,F)
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only one parameter can be selected which is shown as below:
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\arg GPIOx(x = A,B,C,F)
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\param[out] none
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\retval state of GPIO all pins
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*/
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uint16_t gpio_output_port_get(uint32_t gpio_periph)
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{
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return (uint16_t)GPIO_OCTL(gpio_periph);
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}
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/*!
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\brief set GPIO alternate function
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\param[in] gpio_periph: GPIOx(x = A,B,C)
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only one parameter can be selected which is shown as below:
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\arg GPIOx(x = A,B,C)
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\param[in] alt_func_num: GPIO pin af function, please refer to specific device datasheet
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\arg GPIO_AF_0: TIMER13, TIMER14, TIMER16, SPI0, SPI1, I2S0, CK_OUT, USART0,
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I2C0, I2C1, SWDIO, SWCLK
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\arg GPIO_AF_1: USART0, USART1, TIMER2, TIMER14, I2C0, I2C1
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\arg GPIO_AF_2: TIMER0, TIMER1, TIMER15, TIMER16, I2S0
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\arg GPIO_AF_3: I2C0, TIMER14
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\arg GPIO_AF_4(port A,B only): USART1, I2C0, I2C1, TIMER13
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\arg GPIO_AF_5(port A,B only): TIMER15, TIMER16, I2S0
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\arg GPIO_AF_6(port A,B only): SPI1
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\arg GPIO_AF_7(port A,B only): CMP
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\param[in] pin: GPIO pin
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one or more parameters can be selected which are shown as below:
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\arg GPIO_PIN_x(x=0..15), GPIO_PIN_ALL
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\param[out] none
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\retval none
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*/
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void gpio_af_set(uint32_t gpio_periph, uint32_t alt_func_num, uint32_t pin)
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{
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uint16_t i;
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uint32_t afrl, afrh;
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afrl = GPIO_AFSEL0(gpio_periph);
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afrh = GPIO_AFSEL1(gpio_periph);
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for(i = 0U;i < 8U;i++){
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if((1U << i) & pin){
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/* clear the specified pin alternate function bits */
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afrl &= ~GPIO_AFR_MASK(i);
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afrl |= GPIO_AFR_SET(i,alt_func_num);
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}
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}
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for(i = 8U;i < 16U;i++){
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if((1U << i) & pin){
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/* clear the specified pin alternate function bits */
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afrh &= ~GPIO_AFR_MASK(i - 8U);
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afrh |= GPIO_AFR_SET(i - 8U,alt_func_num);
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}
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}
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GPIO_AFSEL0(gpio_periph) = afrl;
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GPIO_AFSEL1(gpio_periph) = afrh;
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}
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/*!
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\brief lock GPIO pin bit
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\param[in] gpio_periph: GPIOx(x = A,B)
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only one parameter can be selected which is shown as below:
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\arg GPIOx(x = A,B)
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\param[in] pin: GPIO pin
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one or more parameters can be selected which are shown as below:
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\arg GPIO_PIN_x(x=0..15), GPIO_PIN_ALL, PB9/PC13 does not exist on GD32E231
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\param[out] none
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\retval none
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*/
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void gpio_pin_lock(uint32_t gpio_periph, uint32_t pin)
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{
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uint32_t lock = 0x00010000U;
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lock |= pin;
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/* lock key writing sequence: write 1->write 0->write 1->read 0->read 1 */
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GPIO_LOCK(gpio_periph) = (uint32_t)lock;
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GPIO_LOCK(gpio_periph) = (uint32_t)pin;
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GPIO_LOCK(gpio_periph) = (uint32_t)lock;
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lock = GPIO_LOCK(gpio_periph);
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lock = GPIO_LOCK(gpio_periph);
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}
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/*!
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\brief toggle GPIO pin status
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\param[in] gpio_periph: GPIOx(x = A,B,C,F)
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only one parameter can be selected which is shown as below:
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\arg GPIOx(x = A,B,C,F)
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\param[in] pin: GPIO pin
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one or more parameters can be selected which are shown as below:
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\arg GPIO_PIN_x(x=0..15), GPIO_PIN_ALL, PB9/PC13 does not exist on GD32E231
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\param[out] none
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\retval none
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*/
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void gpio_bit_toggle(uint32_t gpio_periph, uint32_t pin)
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{
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GPIO_TG(gpio_periph) = (uint32_t)pin;
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}
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/*!
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\brief toggle GPIO port status
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\param[in] gpio_periph: GPIOx(x = A,B,C,F)
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only one parameter can be selected which is shown as below:
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\arg GPIOx(x = A,B,C,F)
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\param[out] none
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\retval none
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*/
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void gpio_port_toggle(uint32_t gpio_periph)
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{
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GPIO_TG(gpio_periph) = 0x0000FFFFU;
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}
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