358 lines
10 KiB
C
358 lines
10 KiB
C
/*!
|
|
\file gd32f4xx_gpio.c
|
|
\brief GPIO driver
|
|
*/
|
|
|
|
/*
|
|
Copyright (C) 2016 GigaDevice
|
|
|
|
2016-08-15, V1.0.0, firmware for GD32F4xx
|
|
*/
|
|
|
|
#include "gd32f4xx_gpio.h"
|
|
|
|
/*!
|
|
\brief reset GPIO port
|
|
\param[in] gpio_periph: GPIOx(x = A,B,C,D,E,F,G,H,I)
|
|
\param[out] none
|
|
\retval none
|
|
*/
|
|
void gpio_deinit(uint32_t gpio_periph)
|
|
{
|
|
switch(gpio_periph){
|
|
case GPIOA:
|
|
/* reset GPIOA */
|
|
rcu_periph_reset_enable(RCU_GPIOARST);
|
|
rcu_periph_reset_disable(RCU_GPIOARST);
|
|
break;
|
|
case GPIOB:
|
|
/* reset GPIOB */
|
|
rcu_periph_reset_enable(RCU_GPIOBRST);
|
|
rcu_periph_reset_disable(RCU_GPIOBRST);
|
|
break;
|
|
case GPIOC:
|
|
/* reset GPIOC */
|
|
rcu_periph_reset_enable(RCU_GPIOCRST);
|
|
rcu_periph_reset_disable(RCU_GPIOCRST);
|
|
break;
|
|
case GPIOD:
|
|
/* reset GPIOD */
|
|
rcu_periph_reset_enable(RCU_GPIODRST);
|
|
rcu_periph_reset_disable(RCU_GPIODRST);
|
|
break;
|
|
case GPIOE:
|
|
/* reset GPIOE */
|
|
rcu_periph_reset_enable(RCU_GPIOERST);
|
|
rcu_periph_reset_disable(RCU_GPIOERST);
|
|
break;
|
|
case GPIOF:
|
|
/* reset GPIOF */
|
|
rcu_periph_reset_enable(RCU_GPIOFRST);
|
|
rcu_periph_reset_disable(RCU_GPIOFRST);
|
|
break;
|
|
case GPIOG:
|
|
/* reset GPIOG */
|
|
rcu_periph_reset_enable(RCU_GPIOGRST);
|
|
rcu_periph_reset_disable(RCU_GPIOGRST);
|
|
break;
|
|
case GPIOH:
|
|
/* reset GPIOH */
|
|
rcu_periph_reset_enable(RCU_GPIOHRST);
|
|
rcu_periph_reset_disable(RCU_GPIOHRST);
|
|
break;
|
|
case GPIOI:
|
|
/* reset GPIOI */
|
|
rcu_periph_reset_enable(RCU_GPIOIRST);
|
|
rcu_periph_reset_disable(RCU_GPIOIRST);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
/*!
|
|
\brief set GPIO output mode
|
|
\param[in] gpio_periph: GPIOx(x = A,B,C,D,E,F,G,H,I)
|
|
\param[in] mode: gpio pin mode
|
|
\arg GPIO_MODE_INPUT: input mode
|
|
\arg GPIO_MODE_OUTPUT: output mode
|
|
\arg GPIO_MODE_AF: alternate function mode
|
|
\arg GPIO_MODE_ANALOG: analog mode
|
|
\param[in] pull_up_down: gpio pin with pull-up or pull-down resistor
|
|
\arg GPIO_PUPD_NONE: without weak pull-up and pull-down resistors
|
|
\arg GPIO_PUPD_PULLUP: with weak pull-up resistor
|
|
\arg GPIO_PUPD_PULLDOWN:with weak pull-down resistor
|
|
\param[in] pin: GPIO_PIN_x(x=0..15), GPIO_PIN_ALL
|
|
\param[out] none
|
|
\retval none
|
|
*/
|
|
void gpio_mode_set(uint32_t gpio_periph,uint32_t mode,uint32_t pull_up_down,uint32_t pin)
|
|
{
|
|
uint16_t i;
|
|
uint32_t ctl, pupd;
|
|
|
|
ctl = GPIO_CTL(gpio_periph);
|
|
pupd = GPIO_PUD(gpio_periph);
|
|
|
|
for(i = 0U;i < 16U;i++){
|
|
if((1U << i) & pin){
|
|
/* clear the specified pin mode bits */
|
|
ctl &= ~GPIO_MODE_MASK(i);
|
|
/* set the specified pin mode bits */
|
|
ctl |= GPIO_MODE_SET(i, mode);
|
|
|
|
/* clear the specified pin pupd bits */
|
|
pupd &= ~GPIO_PUPD_MASK(i);
|
|
/* set the specified pin pupd bits */
|
|
pupd |= GPIO_PUPD_SET(i, pull_up_down);
|
|
}
|
|
}
|
|
|
|
GPIO_CTL(gpio_periph) = ctl;
|
|
GPIO_PUD(gpio_periph) = pupd;
|
|
}
|
|
|
|
/*!
|
|
\brief set GPIO output type and speed
|
|
\param[in] gpio_periph: GPIOx(x = A,B,C,D,E,F,G,H,I)
|
|
\param[in] otype: gpio pin output mode
|
|
\arg GPIO_OTYPE_PP: push pull mode
|
|
\arg GPIO_OTYPE_OD: open drain mode
|
|
\param[in] speed: gpio pin output max speed
|
|
\arg GPIO_OSPEED_2MHZ: output max speed 2M
|
|
\arg GPIO_OSPEED_25MHZ: output max speed 25M
|
|
\arg GPIO_OSPEED_50MHZ: output max speed 50M
|
|
\arg GPIO_OSPEED_200MHZ: output max speed 200M
|
|
\param[in] pin: GPIO_PIN_x(x=0..15), GPIO_PIN_ALL
|
|
\param[out] none
|
|
\retval none
|
|
*/
|
|
void gpio_output_options_set(uint32_t gpio_periph,uint8_t otype,uint32_t speed,uint32_t pin)
|
|
{
|
|
uint16_t i;
|
|
uint32_t ospeedr;
|
|
|
|
if(0x1U == otype){
|
|
GPIO_OMODE(gpio_periph) |= (uint32_t)pin;
|
|
}else{
|
|
GPIO_OMODE(gpio_periph) &= (uint32_t)(~pin);
|
|
}
|
|
|
|
/* get the specified pin output speed bits value */
|
|
ospeedr = GPIO_OSPD(gpio_periph);
|
|
|
|
for(i = 0U;i < 16U;i++){
|
|
if((1U << i) & pin){
|
|
/* clear the specified pin output speed bits */
|
|
ospeedr &= ~GPIO_OSPEED_MASK(i);
|
|
/* set the specified pin output speed bits */
|
|
ospeedr |= GPIO_OSPEED_SET(i,speed);
|
|
}
|
|
}
|
|
GPIO_OSPD(gpio_periph) = ospeedr;
|
|
}
|
|
|
|
/*!
|
|
\brief set GPIO pin
|
|
\param[in] gpio_periph: GPIOx(x = A,B,C,D,E,F,G,H,I)
|
|
\param[in] pin: GPIO_PIN_x(x=0..15), GPIO_PIN_ALL
|
|
\param[out] none
|
|
\retval none
|
|
*/
|
|
void gpio_bit_set(uint32_t gpio_periph,uint32_t pin)
|
|
{
|
|
GPIO_BOP(gpio_periph) = (uint32_t)pin;
|
|
}
|
|
|
|
/*!
|
|
\brief reset GPIO pin
|
|
\param[in] gpio_periph: GPIOx(x = A,B,C,D,E,F,G,H,I)
|
|
\param[in] pin: GPIO_PIN_x(x=0..15), GPIO_PIN_ALL
|
|
\param[out] none
|
|
\retval none
|
|
*/
|
|
void gpio_bit_reset(uint32_t gpio_periph,uint32_t pin)
|
|
{
|
|
GPIO_BC(gpio_periph) = (uint32_t)pin;
|
|
}
|
|
|
|
/*!
|
|
\brief write data to the specified GPIO pin
|
|
\param[in] gpio_periph: GPIOx(x = A,B,C,D,E,F,G,H,I)
|
|
\param[in] pin: GPIO_PIN_x(x=0..15), GPIO_PIN_ALL
|
|
\param[in] bitvalue: SET or RESET
|
|
\arg RESET: clear the port pin
|
|
\arg SET: set the port pin
|
|
\param[out] none
|
|
\retval none
|
|
*/
|
|
void gpio_bit_write(uint32_t gpio_periph,uint32_t pin,bit_status bit_value)
|
|
{
|
|
if(RESET != bit_value){
|
|
GPIO_BOP(gpio_periph) = (uint32_t)pin;
|
|
}else{
|
|
GPIO_BC(gpio_periph) = (uint32_t)pin;
|
|
}
|
|
}
|
|
|
|
/*!
|
|
\brief write data to the specified GPIO port
|
|
\param[in] gpio_periph: GPIOx(x = A,B,C,D,E,F,G,H,I)
|
|
\param[in] data: specify the value to be written to the port output data register
|
|
\param[out] none
|
|
\retval none
|
|
*/
|
|
void gpio_port_write(uint32_t gpio_periph,uint16_t data)
|
|
{
|
|
GPIO_OCTL(gpio_periph) = (uint32_t)data;
|
|
}
|
|
|
|
/*!
|
|
\brief get GPIO pin input status
|
|
\param[in] gpio_periph: GPIOx(x = A,B,C,D,E,F,G,H,I)
|
|
\param[in] pin: GPIO_PIN_x(x=0..15), GPIO_PIN_ALL
|
|
\param[out] none
|
|
\retval input state of gpio pin: SET or RESET
|
|
*/
|
|
FlagStatus gpio_input_bit_get(uint32_t gpio_periph,uint32_t pin)
|
|
{
|
|
if((uint32_t)RESET != (GPIO_ISTAT(gpio_periph)&(pin))){
|
|
return SET;
|
|
}else{
|
|
return RESET;
|
|
}
|
|
}
|
|
|
|
/*!
|
|
\brief get GPIO all pins input status
|
|
\param[in] gpio_periph: GPIOx(x = A,B,C,D,E,F,G,H,I)
|
|
\param[out] none
|
|
\retval input state of gpio all pins
|
|
*/
|
|
uint16_t gpio_input_port_get(uint32_t gpio_periph)
|
|
{
|
|
return (uint16_t)(GPIO_ISTAT(gpio_periph));
|
|
}
|
|
|
|
/*!
|
|
\brief get GPIO pin output status
|
|
\param[in] gpio_periph: GPIOx(x = A,B,C,D,E,F,G,H,I)
|
|
\param[in] pin: GPIO_PIN_x(x=0..15), GPIO_PIN_ALL
|
|
\param[out] none
|
|
\retval output state of gpio pin: SET or RESET
|
|
*/
|
|
FlagStatus gpio_output_bit_get(uint32_t gpio_periph,uint32_t pin)
|
|
{
|
|
if((uint32_t)RESET !=(GPIO_OCTL(gpio_periph)&(pin))){
|
|
return SET;
|
|
}else{
|
|
return RESET;
|
|
}
|
|
}
|
|
|
|
/*!
|
|
\brief get GPIO all pins output status
|
|
\param[in] gpio_periph: GPIOx(x = A,B,C,D,E,F,G,H,I)
|
|
\param[out] none
|
|
\retval output state of gpio all pins
|
|
*/
|
|
uint16_t gpio_output_port_get(uint32_t gpio_periph)
|
|
{
|
|
return ((uint16_t)GPIO_OCTL(gpio_periph));
|
|
}
|
|
|
|
/*!
|
|
\brief set GPIO alternate function
|
|
\param[in] gpio_periph: GPIOx(x = A,B,C,D,E,F,G,H,I)
|
|
\param[in] alt_func_num: gpio pin af function
|
|
\arg GPIO_AF_0: SYSTEM
|
|
\arg GPIO_AF_1: TIMER0, TIMER1
|
|
\arg GPIO_AF_2: TIMER2, TIMER3, TIMER4
|
|
\arg GPIO_AF_3: TIMER7, TIMER8, TIMER9, TIMER10
|
|
\arg GPIO_AF_4: I2C0, I2C1, I2C2
|
|
\arg GPIO_AF_5: SPI0, SPI1, SPI2, SPI3, SPI4, SPI5
|
|
\arg GPIO_AF_6: SPI1, SPI2, SAI0
|
|
\arg GPIO_AF_7: USART0, USART1, USART2
|
|
\arg GPIO_AF_8: UART3, UART4, USART5, UART6, UART7
|
|
\arg GPIO_AF_9: CAN0,CAN1, TLI, TIMER11, TIMER12, TIMER13
|
|
\arg GPIO_AF_10: USB_FS, USB_HS
|
|
\arg GPIO_AF_11: ENET
|
|
\arg GPIO_AF_12: FMC, SDIO, USB_HS
|
|
\arg GPIO_AF_13: DCI
|
|
\arg GPIO_AF_14: TLI
|
|
\arg GPIO_AF_15: EVENTOUT
|
|
\param[in] pin: GPIO_PIN_x(x=0..15), GPIO_PIN_ALL
|
|
\param[out] none
|
|
\retval none
|
|
*/
|
|
void gpio_af_set(uint32_t gpio_periph,uint32_t alt_func_num,uint32_t pin)
|
|
{
|
|
uint16_t i;
|
|
uint32_t afrl, afrh;
|
|
|
|
afrl = GPIO_AFSEL0(gpio_periph);
|
|
afrh = GPIO_AFSEL1(gpio_periph);
|
|
|
|
for(i = 0U;i < 8U;i++){
|
|
if((1U << i) & pin){
|
|
/* clear the specified pin alternate function bits */
|
|
afrl &= ~GPIO_AFR_MASK(i);
|
|
afrl |= GPIO_AFR_SET(i,alt_func_num);
|
|
}
|
|
}
|
|
|
|
for(i = 8U;i < 16U;i++){
|
|
if((1U << i) & pin){
|
|
/* clear the specified pin alternate function bits */
|
|
afrh &= ~GPIO_AFR_MASK(i - 8U);
|
|
afrh |= GPIO_AFR_SET(i - 8U,alt_func_num);
|
|
}
|
|
}
|
|
|
|
GPIO_AFSEL0(gpio_periph) = afrl;
|
|
GPIO_AFSEL1(gpio_periph) = afrh;
|
|
}
|
|
|
|
/*!
|
|
\brief lock GPIO pin
|
|
\param[in] gpio_periph: GPIOx(x = A,B,C,D,E,F,G,H,I)
|
|
\param[in] pin: GPIO_PIN_x(x=0..15), GPIO_PIN_ALL
|
|
\param[out] none
|
|
\retval none
|
|
*/
|
|
void gpio_pin_lock(uint32_t gpio_periph,uint32_t pin)
|
|
{
|
|
uint32_t lock = 0x00010000U;
|
|
lock |= pin;
|
|
|
|
/* lock key writing sequence: write 1->write 0->write 1-> read 0-> read 1 */
|
|
GPIO_LOCK(gpio_periph) = (uint32_t)lock;
|
|
GPIO_LOCK(gpio_periph) = (uint32_t)pin;
|
|
GPIO_LOCK(gpio_periph) = (uint32_t)lock;
|
|
lock = GPIO_LOCK(gpio_periph);
|
|
lock = GPIO_LOCK(gpio_periph);
|
|
}
|
|
|
|
/*!
|
|
\brief toggle GPIO pin
|
|
\param[in] gpio_periph: GPIOx(x = A,B,C,D,E,F,G,H,I)
|
|
\param[in] pin: GPIO_PIN_x(x=0..15), GPIO_PIN_ALL
|
|
\param[out] none
|
|
\retval none
|
|
*/
|
|
void gpio_bit_toggle(uint32_t gpio_periph,uint32_t pin)
|
|
{
|
|
GPIO_TG(gpio_periph) = (uint32_t)pin;
|
|
}
|
|
|
|
/*!
|
|
\brief toggle GPIO port
|
|
\param[in] gpio_periph: GPIOx(x = A,B,C,D,E,F,G,H,I)
|
|
\param[out] none
|
|
\retval none
|
|
*/
|
|
void gpio_port_toggle(uint32_t gpio_periph)
|
|
{
|
|
GPIO_TG(gpio_periph) = 0x0000FFFFU;
|
|
}
|