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rt-thread-official/bsp/hk32/libraries/rt_drivers/drv_gpio.c

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/*
* Copyright (c) 2006-2021, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2021-08-15 Jonas first version
*/
#include <board.h>
#include "drv_gpio.h"
#ifdef RT_USING_PIN
#define PIN_NUM(port, no) (((((port) & 0xFu) << 4) | ((no) & 0xFu)))
#define PIN_PORT(pin) ((uint8_t)(((pin) >> 4) & 0xFu))
#define PIN_NO(pin) ((uint8_t)((pin) & 0xFu))
#define PIN_HKPORTSOURCE(pin) ((uint8_t)(((pin) & 0xF0u) >> 4))
#define PIN_HKPINSOURCE(pin) ((uint8_t)((pin) & 0xFu))
#define PIN_HKPORT(pin) ((GPIO_TypeDef *)(GPIOA_BASE + (0x400u * PIN_PORT(pin))))
#define PIN_HKPIN(pin) ((uint16_t)(1u << PIN_NO(pin)))
#if defined(GPIOZ)
#define __HK32_PORT_MAX 12u
#elif defined(GPIOK)
#define __HK32_PORT_MAX 11u
#elif defined(GPIOJ)
#define __HK32_PORT_MAX 10u
#elif defined(GPIOI)
#define __HK32_PORT_MAX 9u
#elif defined(GPIOH)
#define __HK32_PORT_MAX 8u
#elif defined(GPIOG)
#define __HK32_PORT_MAX 7u
#elif defined(GPIOF)
#define __HK32_PORT_MAX 6u
#elif defined(GPIOE)
#define __HK32_PORT_MAX 5u
#elif defined(GPIOD)
#define __HK32_PORT_MAX 4u
#elif defined(GPIOC)
#define __HK32_PORT_MAX 3u
#elif defined(GPIOB)
#define __HK32_PORT_MAX 2u
#elif defined(GPIOA)
#define __HK32_PORT_MAX 1u
#else
#define __HK32_PORT_MAX 0u
#error Unsupported HK32 GPIO peripheral.
#endif
#define PIN_HKPORT_MAX __HK32_PORT_MAX
static const struct pin_irq_map pin_irq_map[] =
{
{GPIO_Pin_0, EXTI_Line0, EXTI0_1_IRQn},
{GPIO_Pin_1, EXTI_Line1, EXTI0_1_IRQn},
{GPIO_Pin_2, EXTI_Line2, EXTI2_3_IRQn},
{GPIO_Pin_3, EXTI_Line3, EXTI2_3_IRQn},
{GPIO_Pin_4, EXTI_Line4, EXTI4_15_IRQn},
{GPIO_Pin_5, EXTI_Line5, EXTI4_15_IRQn},
{GPIO_Pin_6, EXTI_Line6, EXTI4_15_IRQn},
{GPIO_Pin_7, EXTI_Line7, EXTI4_15_IRQn},
{GPIO_Pin_8, EXTI_Line8, EXTI4_15_IRQn},
{GPIO_Pin_9, EXTI_Line9, EXTI4_15_IRQn},
{GPIO_Pin_10, EXTI_Line10, EXTI4_15_IRQn},
{GPIO_Pin_11, EXTI_Line11, EXTI4_15_IRQn},
{GPIO_Pin_12, EXTI_Line12, EXTI4_15_IRQn},
{GPIO_Pin_13, EXTI_Line13, EXTI4_15_IRQn},
{GPIO_Pin_14, EXTI_Line14, EXTI4_15_IRQn},
{GPIO_Pin_15, EXTI_Line15, EXTI4_15_IRQn},
};
static struct rt_pin_irq_hdr pin_irq_hdr_tab[] =
{
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
{-1, 0, RT_NULL, RT_NULL},
};
static uint32_t pin_irq_enable_mask = 0;
#define ITEM_NUM(items) sizeof(items) / sizeof(items[0])
static void hk32_pin_write(rt_device_t dev, rt_base_t pin, rt_uint8_t value)
{
GPIO_TypeDef *gpio_port;
uint16_t gpio_pin;
if (PIN_PORT(pin) < PIN_HKPORT_MAX)
{
gpio_port = PIN_HKPORT(pin);
gpio_pin = PIN_HKPIN(pin);
GPIO_WriteBit(gpio_port, gpio_pin, (BitAction)value);
}
}
static rt_int8_t hk32_pin_read(rt_device_t dev, rt_base_t pin)
{
GPIO_TypeDef *gpio_port;
uint16_t gpio_pin;
rt_int8_t value;
value = PIN_LOW;
if (PIN_PORT(pin) < PIN_HKPORT_MAX)
{
gpio_port = PIN_HKPORT(pin);
gpio_pin = PIN_HKPIN(pin);
value = GPIO_ReadInputDataBit(gpio_port, gpio_pin);
}
else
{
return -RT_ENOSYS;
}
return value;
}
static void hk32_pin_mode(rt_device_t dev, rt_base_t pin, rt_uint8_t mode)
{
GPIO_InitTypeDef GPIO_InitStruct;
GPIO_TypeDef *gpio_port;
uint16_t gpio_pin;
if (PIN_PORT(pin) < PIN_HKPORT_MAX)
{
gpio_port = PIN_HKPORT(pin);
gpio_pin = PIN_HKPIN(pin);
}
else
{
return;
}
/* Configure GPIO_InitStructure */
GPIO_StructInit(&GPIO_InitStruct);
GPIO_InitStruct.GPIO_Pin = gpio_pin;
GPIO_InitStruct.GPIO_Mode = GPIO_Mode_OUT;
GPIO_InitStruct.GPIO_OType = GPIO_OType_PP;
GPIO_InitStruct.GPIO_PuPd = GPIO_PuPd_NOPULL;
GPIO_InitStruct.GPIO_Speed = GPIO_Speed_50MHz;
if (mode == PIN_MODE_OUTPUT)
{
/* output setting */
GPIO_InitStruct.GPIO_Mode = GPIO_Mode_OUT;
}
else if (mode == PIN_MODE_INPUT)
{
/* input setting: not pull. */
GPIO_InitStruct.GPIO_Mode = GPIO_Mode_IN;
}
else if (mode == PIN_MODE_INPUT_PULLUP)
{
/* input setting: pull up. */
GPIO_InitStruct.GPIO_Mode = GPIO_Mode_IN;
GPIO_InitStruct.GPIO_PuPd = GPIO_PuPd_UP;
}
else if (mode == PIN_MODE_INPUT_PULLDOWN)
{
/* input setting: pull down. */
GPIO_InitStruct.GPIO_Mode = GPIO_Mode_IN;
GPIO_InitStruct.GPIO_PuPd = GPIO_PuPd_DOWN;
}
else if (mode == PIN_MODE_OUTPUT_OD)
{
/* output setting: od. */
GPIO_InitStruct.GPIO_OType = GPIO_OType_OD;
}
GPIO_Init(gpio_port, &GPIO_InitStruct);
}
rt_inline rt_int32_t bit2bitno(rt_uint32_t bit)
{
int i;
for (i = 0; i < 32; i++)
{
if ((0x01 << i) == bit)
{
return i;
}
}
return -1;
}
rt_inline const struct pin_irq_map *get_pin_irq_map(uint32_t pinbit)
{
rt_int32_t mapindex = bit2bitno(pinbit);
if (mapindex < 0 || mapindex >= ITEM_NUM(pin_irq_map))
{
return RT_NULL;
}
return &pin_irq_map[mapindex];
};
static rt_err_t hk32_pin_attach_irq(struct rt_device *device, rt_base_t pin,
rt_uint8_t mode, void (*hdr)(void *args), void *args)
{
rt_base_t level;
rt_int32_t irqindex = -1;
uint16_t gpio_pin;
if (PIN_PORT(pin) < PIN_HKPORT_MAX)
{
gpio_pin = PIN_HKPIN(pin);
}
else
{
return -RT_ENOSYS;
}
irqindex = bit2bitno(gpio_pin);
if (irqindex < 0 || irqindex >= ITEM_NUM(pin_irq_map))
{
return -RT_ENOSYS;
}
level = rt_hw_interrupt_disable();
if (pin_irq_hdr_tab[irqindex].pin == pin &&
pin_irq_hdr_tab[irqindex].hdr == hdr &&
pin_irq_hdr_tab[irqindex].mode == mode &&
pin_irq_hdr_tab[irqindex].args == args)
{
rt_hw_interrupt_enable(level);
return RT_EOK;
}
if (pin_irq_hdr_tab[irqindex].pin != -1)
{
rt_hw_interrupt_enable(level);
return -RT_EBUSY;
}
pin_irq_hdr_tab[irqindex].pin = pin;
pin_irq_hdr_tab[irqindex].hdr = hdr;
pin_irq_hdr_tab[irqindex].mode = mode;
pin_irq_hdr_tab[irqindex].args = args;
rt_hw_interrupt_enable(level);
return RT_EOK;
}
static rt_err_t hk32_pin_dettach_irq(struct rt_device *device, rt_base_t pin)
{
rt_base_t level;
rt_int32_t irqindex = -1;
uint16_t gpio_pin;
if (PIN_PORT(pin) < PIN_HKPORT_MAX)
{
gpio_pin = PIN_HKPIN(pin);
}
else
{
return -RT_ENOSYS;
}
irqindex = bit2bitno(gpio_pin);
if (irqindex < 0 || irqindex >= ITEM_NUM(pin_irq_map))
{
return -RT_ENOSYS;
}
level = rt_hw_interrupt_disable();
if (pin_irq_hdr_tab[irqindex].pin == -1)
{
rt_hw_interrupt_enable(level);
return RT_EOK;
}
pin_irq_hdr_tab[irqindex].pin = -1;
pin_irq_hdr_tab[irqindex].hdr = RT_NULL;
pin_irq_hdr_tab[irqindex].mode = 0;
pin_irq_hdr_tab[irqindex].args = RT_NULL;
rt_hw_interrupt_enable(level);
return RT_EOK;
}
static rt_err_t hk32_pin_irq_enable(struct rt_device *device, rt_base_t pin,
rt_uint8_t enabled)
{
GPIO_InitTypeDef GPIO_InitStruct;
EXTI_InitTypeDef EXTI_InitStruct;
NVIC_InitTypeDef NVIC_InitStruct;
const struct pin_irq_map *irqmap;
rt_base_t level;
rt_int32_t irqindex = -1;
GPIO_TypeDef *gpio_port;
uint16_t gpio_pin;
if (PIN_PORT(pin) < PIN_HKPORT_MAX)
{
gpio_port = PIN_HKPORT(pin);
gpio_pin = PIN_HKPIN(pin);
}
else
{
return -RT_ENOSYS;
}
if (enabled == PIN_IRQ_ENABLE)
{
irqindex = bit2bitno(gpio_pin);
if (irqindex < 0 || irqindex >= ITEM_NUM(pin_irq_map))
{
return -RT_ENOSYS;
}
level = rt_hw_interrupt_disable();
if (pin_irq_hdr_tab[irqindex].pin == -1)
{
rt_hw_interrupt_enable(level);
return -RT_ENOSYS;
}
irqmap = &pin_irq_map[irqindex];
/* Configure GPIO_InitStructure */
GPIO_StructInit(&GPIO_InitStruct);
EXTI_StructInit(&EXTI_InitStruct);
GPIO_InitStruct.GPIO_Pin = irqmap->pinbit;
GPIO_InitStruct.GPIO_Speed = GPIO_Speed_50MHz;
EXTI_InitStruct.EXTI_Line = irqmap->pinbit;
EXTI_InitStruct.EXTI_Mode = EXTI_Mode_Interrupt;
EXTI_InitStruct.EXTI_LineCmd = ENABLE;
switch (pin_irq_hdr_tab[irqindex].mode)
{
case PIN_IRQ_MODE_RISING:
GPIO_InitStruct.GPIO_PuPd = GPIO_PuPd_DOWN;
EXTI_InitStruct.EXTI_Trigger = EXTI_Trigger_Rising;
break;
case PIN_IRQ_MODE_FALLING:
GPIO_InitStruct.GPIO_PuPd = GPIO_PuPd_UP;
EXTI_InitStruct.EXTI_Trigger = EXTI_Trigger_Falling;
break;
case PIN_IRQ_MODE_RISING_FALLING:
EXTI_InitStruct.EXTI_Trigger = EXTI_Trigger_Rising_Falling;
break;
}
GPIO_Init(gpio_port, &GPIO_InitStruct);
SYSCFG_EXTILineConfig(PIN_HKPORTSOURCE(pin), PIN_HKPINSOURCE(pin));
EXTI_Init(&EXTI_InitStruct);
NVIC_InitStruct.NVIC_IRQChannel = irqmap->irqno;
NVIC_InitStruct.NVIC_IRQChannelCmd = ENABLE;
NVIC_InitStruct.NVIC_IRQChannelPriority = 3;
NVIC_Init(&NVIC_InitStruct);
pin_irq_enable_mask |= irqmap->pinbit;
rt_hw_interrupt_enable(level);
}
else if (enabled == PIN_IRQ_DISABLE)
{
irqmap = get_pin_irq_map(gpio_pin);
if (irqmap == RT_NULL)
{
return -RT_ENOSYS;
}
level = rt_hw_interrupt_disable();
pin_irq_enable_mask &= ~irqmap->pinbit;
NVIC_InitStruct.NVIC_IRQChannelCmd = DISABLE;
NVIC_InitStruct.NVIC_IRQChannelPriority = 3;
if ((irqmap->pinbit >= GPIO_Pin_0) && (irqmap->pinbit <= GPIO_Pin_1))
{
if (!(pin_irq_enable_mask & (GPIO_Pin_0 | GPIO_Pin_1)))
{
NVIC_InitStruct.NVIC_IRQChannel = irqmap->irqno;
}
}
else if ((irqmap->pinbit >= GPIO_Pin_2) && \
(irqmap->pinbit <= GPIO_Pin_3))
{
if (!(pin_irq_enable_mask & (GPIO_Pin_2 | GPIO_Pin_3)))
{
NVIC_InitStruct.NVIC_IRQChannel = irqmap->irqno;
}
}
else if ((irqmap->pinbit >= GPIO_Pin_4) && \
(irqmap->pinbit <= GPIO_Pin_15))
{
if (!(pin_irq_enable_mask & (GPIO_Pin_4 | GPIO_Pin_5 | GPIO_Pin_6 | \
GPIO_Pin_7 | GPIO_Pin_8 | GPIO_Pin_9 | \
GPIO_Pin_10 | GPIO_Pin_11 | GPIO_Pin_12 | \
GPIO_Pin_13 | GPIO_Pin_14 | GPIO_Pin_15)))
{
NVIC_InitStruct.NVIC_IRQChannel = irqmap->irqno;
}
}
else
{
NVIC_InitStruct.NVIC_IRQChannel = irqmap->irqno;
}
NVIC_Init(&NVIC_InitStruct);
rt_hw_interrupt_enable(level);
}
else
{
return -RT_ENOSYS;
}
return RT_EOK;
}
const static struct rt_pin_ops _hk32_pin_ops =
{
hk32_pin_mode,
hk32_pin_write,
hk32_pin_read,
hk32_pin_attach_irq,
hk32_pin_dettach_irq,
hk32_pin_irq_enable,
RT_NULL,
};
rt_inline void pin_irq_hdr(int irqno)
{
EXTI_ClearITPendingBit(pin_irq_map[irqno].lineno);
if (pin_irq_hdr_tab[irqno].hdr)
{
pin_irq_hdr_tab[irqno].hdr(pin_irq_hdr_tab[irqno].args);
}
}
void GPIO_EXTI_IRQHandler(uint16_t GPIO_Pin)
{
pin_irq_hdr(bit2bitno(GPIO_Pin));
}
void EXTI0_1_IRQHandler(void)
{
rt_interrupt_enter();
if (RESET != EXTI_GetITStatus(EXTI_Line0))
{
GPIO_EXTI_IRQHandler(GPIO_Pin_0);
}
if (RESET != EXTI_GetITStatus(EXTI_Line1))
{
GPIO_EXTI_IRQHandler(GPIO_Pin_1);
}
rt_interrupt_leave();
}
void EXTI2_3_IRQHandler(void)
{
rt_interrupt_enter();
if (RESET != EXTI_GetITStatus(EXTI_Line2))
{
GPIO_EXTI_IRQHandler(GPIO_Pin_2);
}
if (RESET != EXTI_GetITStatus(EXTI_Line3))
{
GPIO_EXTI_IRQHandler(GPIO_Pin_3);
}
rt_interrupt_leave();
}
void EXTI4_15_IRQHandler(void)
{
rt_interrupt_enter();
if (RESET != EXTI_GetITStatus(EXTI_Line4))
{
GPIO_EXTI_IRQHandler(GPIO_Pin_4);
}
if (RESET != EXTI_GetITStatus(EXTI_Line5))
{
GPIO_EXTI_IRQHandler(GPIO_Pin_5);
}
if (RESET != EXTI_GetITStatus(EXTI_Line6))
{
GPIO_EXTI_IRQHandler(GPIO_Pin_6);
}
if (RESET != EXTI_GetITStatus(EXTI_Line7))
{
GPIO_EXTI_IRQHandler(GPIO_Pin_7);
}
if (RESET != EXTI_GetITStatus(EXTI_Line8))
{
GPIO_EXTI_IRQHandler(GPIO_Pin_8);
}
if (RESET != EXTI_GetITStatus(EXTI_Line9))
{
GPIO_EXTI_IRQHandler(GPIO_Pin_9);
}
if (RESET != EXTI_GetITStatus(EXTI_Line10))
{
GPIO_EXTI_IRQHandler(GPIO_Pin_10);
}
if (RESET != EXTI_GetITStatus(EXTI_Line11))
{
GPIO_EXTI_IRQHandler(GPIO_Pin_11);
}
if (RESET != EXTI_GetITStatus(EXTI_Line12))
{
GPIO_EXTI_IRQHandler(GPIO_Pin_12);
}
if (RESET != EXTI_GetITStatus(EXTI_Line13))
{
GPIO_EXTI_IRQHandler(GPIO_Pin_13);
}
if (RESET != EXTI_GetITStatus(EXTI_Line14))
{
GPIO_EXTI_IRQHandler(GPIO_Pin_14);
}
if (RESET != EXTI_GetITStatus(EXTI_Line15))
{
GPIO_EXTI_IRQHandler(GPIO_Pin_15);
}
rt_interrupt_leave();
}
int rt_hw_pin_init(void)
{
RCC_APB2PeriphClockCmd(RCC_APB2Periph_SYSCFG, ENABLE);
#ifdef GPIOA
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOA, ENABLE);
#endif
#ifdef GPIOB
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOB, ENABLE);
#endif
#ifdef GPIOC
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOC, ENABLE);
#endif
#ifdef GPIOD
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOD, ENABLE);
#endif
#ifdef GPIOE
RCC_APB2PeriphClockCmd(RCC_APB2PERIPH_GPIOE, ENABLE);
#endif
#ifdef GPIOF
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOF, ENABLE);
#endif
#ifdef GPIOG
RCC_APB2PeriphClockCmd(RCC_APB2PERIPH_GPIOG, ENABLE);
#endif
return rt_device_pin_register("pin", &_hk32_pin_ops, RT_NULL);
}
INIT_BOARD_EXPORT(rt_hw_pin_init);
#endif /* RT_USING_PIN */
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