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rt-thread/bsp/hc32f4a0/drivers/drv_gpio.c

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/*
* Copyright (C) 2020, Huada Semiconductor Co., Ltd.
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2020-10-30 CDT first version
*/
#include <rtthread.h>
#include "rthw.h"
#ifdef RT_USING_PIN
#include "drv_gpio.h"
#include "drv_irq.h"
#define GPIO_PIN_INDEX(pin) ((uint8_t)((pin) & 0x0F))
#define GPIO_PORT(pin) ((uint8_t)(((pin) >> 4) & 0x0F))
#define GPIO_PIN(pin) ((uint16_t)(0x01U << GPIO_PIN_INDEX(pin)))
#define PIN_NUM(port, pin) (((((port) & 0x0F) << 4) | ((pin) & 0x0F)))
#define PIN_MAX_NUM ((GPIO_PORT_I * 16) + (__CLZ(__RBIT(GPIO_PIN_13))) + 1)
#define ITEM_NUM(items) sizeof(items) / sizeof(items[0])
static void exint0_irq_handler(void);
static void exint1_irq_handler(void);
static void exint2_irq_handler(void);
static void exint3_irq_handler(void);
static void exint4_irq_handler(void);
static void exint5_irq_handler(void);
static void exint6_irq_handler(void);
static void exint7_irq_handler(void);
static void exint8_irq_handler(void);
static void exint9_irq_handler(void);
static void exint10_irq_handler(void);
static void exint11_irq_handler(void);
static void exint12_irq_handler(void);
static void exint13_irq_handler(void);
static void exint14_irq_handler(void);
static void exint15_irq_handler(void);
struct hc32_pin_irq_map
{
rt_uint16_t pinbit;
struct hc32_irq_config irq_config;
func_ptr_t irq_callback;
};
#ifndef HC32_PIN_CONFIG
#define HC32_PIN_CONFIG(pin, irq, src, irq_info) \
{ \
.pinbit = pin, \
.irq_callback = irq, \
.irq_config = irq_info, \
.irq_config.int_src = src, \
}
#endif /* HC32_PIN_CONFIG */
static struct hc32_pin_irq_map pin_irq_map[] =
{
HC32_PIN_CONFIG(GPIO_PIN_00, exint0_irq_handler, INT_PORT_EIRQ0, EXINT0_IRQ_CONFIG),
HC32_PIN_CONFIG(GPIO_PIN_01, exint1_irq_handler, INT_PORT_EIRQ1, EXINT1_IRQ_CONFIG),
HC32_PIN_CONFIG(GPIO_PIN_02, exint2_irq_handler, INT_PORT_EIRQ2, EXINT2_IRQ_CONFIG),
HC32_PIN_CONFIG(GPIO_PIN_03, exint3_irq_handler, INT_PORT_EIRQ3, EXINT3_IRQ_CONFIG),
HC32_PIN_CONFIG(GPIO_PIN_04, exint4_irq_handler, INT_PORT_EIRQ4, EXINT4_IRQ_CONFIG),
HC32_PIN_CONFIG(GPIO_PIN_05, exint5_irq_handler, INT_PORT_EIRQ5, EXINT5_IRQ_CONFIG),
HC32_PIN_CONFIG(GPIO_PIN_06, exint6_irq_handler, INT_PORT_EIRQ6, EXINT6_IRQ_CONFIG),
HC32_PIN_CONFIG(GPIO_PIN_07, exint7_irq_handler, INT_PORT_EIRQ7, EXINT7_IRQ_CONFIG),
HC32_PIN_CONFIG(GPIO_PIN_08, exint8_irq_handler, INT_PORT_EIRQ8, EXINT8_IRQ_CONFIG),
HC32_PIN_CONFIG(GPIO_PIN_09, exint9_irq_handler, INT_PORT_EIRQ9, EXINT9_IRQ_CONFIG),
HC32_PIN_CONFIG(GPIO_PIN_10, exint10_irq_handler, INT_PORT_EIRQ10, EXINT10_IRQ_CONFIG),
HC32_PIN_CONFIG(GPIO_PIN_11, exint11_irq_handler, INT_PORT_EIRQ11, EXINT11_IRQ_CONFIG),
HC32_PIN_CONFIG(GPIO_PIN_12, exint12_irq_handler, INT_PORT_EIRQ12, EXINT12_IRQ_CONFIG),
HC32_PIN_CONFIG(GPIO_PIN_13, exint13_irq_handler, INT_PORT_EIRQ13, EXINT13_IRQ_CONFIG),
HC32_PIN_CONFIG(GPIO_PIN_14, exint14_irq_handler, INT_PORT_EIRQ14, EXINT14_IRQ_CONFIG),
HC32_PIN_CONFIG(GPIO_PIN_15, exint15_irq_handler, INT_PORT_EIRQ15, EXINT15_IRQ_CONFIG),
};
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 void pin_irq_handler(rt_uint16_t pinbit)
{
rt_int32_t irqindex = -1;
if (Set == EXINT_GetExIntSrc(pinbit))
{
EXINT_ClrExIntSrc(pinbit);
irqindex = __CLZ(__RBIT(pinbit));
if (pin_irq_hdr_tab[irqindex].hdr)
{
pin_irq_hdr_tab[irqindex].hdr(pin_irq_hdr_tab[irqindex].args);
}
}
}
static void exint0_irq_handler(void)
{
rt_interrupt_enter();
pin_irq_handler(pin_irq_map[0].pinbit);
rt_interrupt_leave();
}
static void exint1_irq_handler(void)
{
rt_interrupt_enter();
pin_irq_handler(pin_irq_map[1].pinbit);
rt_interrupt_leave();
}
static void exint2_irq_handler(void)
{
rt_interrupt_enter();
pin_irq_handler(pin_irq_map[2].pinbit);
rt_interrupt_leave();
}
static void exint3_irq_handler(void)
{
rt_interrupt_enter();
pin_irq_handler(pin_irq_map[3].pinbit);
rt_interrupt_leave();
}
static void exint4_irq_handler(void)
{
rt_interrupt_enter();
pin_irq_handler(pin_irq_map[4].pinbit);
rt_interrupt_leave();
}
static void exint5_irq_handler(void)
{
rt_interrupt_enter();
pin_irq_handler(pin_irq_map[5].pinbit);
rt_interrupt_leave();
}
static void exint6_irq_handler(void)
{
rt_interrupt_enter();
pin_irq_handler(pin_irq_map[6].pinbit);
rt_interrupt_leave();
}
static void exint7_irq_handler(void)
{
rt_interrupt_enter();
pin_irq_handler(pin_irq_map[7].pinbit);
rt_interrupt_leave();
}
static void exint8_irq_handler(void)
{
rt_interrupt_enter();
pin_irq_handler(pin_irq_map[8].pinbit);
rt_interrupt_leave();
}
static void exint9_irq_handler(void)
{
rt_interrupt_enter();
pin_irq_handler(pin_irq_map[9].pinbit);
rt_interrupt_leave();
}
static void exint10_irq_handler(void)
{
rt_interrupt_enter();
pin_irq_handler(pin_irq_map[10].pinbit);
rt_interrupt_leave();
}
static void exint11_irq_handler(void)
{
rt_interrupt_enter();
pin_irq_handler(pin_irq_map[11].pinbit);
rt_interrupt_leave();
}
static void exint12_irq_handler(void)
{
rt_interrupt_enter();
pin_irq_handler(pin_irq_map[12].pinbit);
rt_interrupt_leave();
}
static void exint13_irq_handler(void)
{
rt_interrupt_enter();
pin_irq_handler(pin_irq_map[13].pinbit);
rt_interrupt_leave();
}
static void exint14_irq_handler(void)
{
rt_interrupt_enter();
pin_irq_handler(pin_irq_map[14].pinbit);
rt_interrupt_leave();
}
static void exint15_irq_handler(void)
{
rt_interrupt_enter();
pin_irq_handler(pin_irq_map[15].pinbit);
rt_interrupt_leave();
}
static void hc32_pin_write(rt_device_t dev, rt_base_t pin, rt_base_t value)
{
uint8_t gpio_port;
uint16_t gpio_pin;
if (pin < PIN_MAX_NUM)
{
gpio_port = GPIO_PORT(pin);
gpio_pin = GPIO_PIN(pin);
if (PIN_LOW == value)
{
GPIO_ResetPins(gpio_port, gpio_pin);
}
else
{
GPIO_SetPins(gpio_port, gpio_pin);
}
}
}
static int hc32_pin_read(rt_device_t dev, rt_base_t pin)
{
uint8_t gpio_port;
uint16_t gpio_pin;
int value = PIN_LOW;
if (pin < PIN_MAX_NUM)
{
gpio_port = GPIO_PORT(pin);
gpio_pin = GPIO_PIN(pin);
if (Pin_Reset == GPIO_ReadInputPins(gpio_port, gpio_pin))
{
value = PIN_LOW;
}
else
{
value = PIN_HIGH;
}
}
return value;
}
static void hc32_pin_mode(rt_device_t dev, rt_base_t pin, rt_base_t mode)
{
uint8_t gpio_port;
uint16_t gpio_pin;
stc_gpio_init_t stcGpioInit;
if (pin >= PIN_MAX_NUM)
{
return;
}
GPIO_StructInit(&stcGpioInit);
switch (mode)
{
case PIN_MODE_OUTPUT:
stcGpioInit.u16PinDir = PIN_DIR_OUT;
stcGpioInit.u16PinOType = PIN_OTYPE_CMOS;
break;
case PIN_MODE_INPUT:
stcGpioInit.u16PinDir = PIN_DIR_IN;
break;
case PIN_MODE_INPUT_PULLUP:
stcGpioInit.u16PinDir = PIN_DIR_IN;
stcGpioInit.u16PullUp = PIN_PU_ON;
break;
case PIN_MODE_INPUT_PULLDOWN:
stcGpioInit.u16PinDir = PIN_DIR_IN;
stcGpioInit.u16PullUp = PIN_PU_OFF;
break;
case PIN_MODE_OUTPUT_OD:
stcGpioInit.u16PinDir = PIN_DIR_OUT;
stcGpioInit.u16PinOType = PIN_OTYPE_NMOS;
break;
default:
break;
}
gpio_port = GPIO_PORT(pin);
gpio_pin = GPIO_PIN(pin);
GPIO_Init(gpio_port, gpio_pin, &stcGpioInit);
}
static void gpio_irq_config(uint8_t u8Port, uint16_t u16Pin, uint16_t u16ExInt)
{
__IO uint16_t *PCRx;
uint16_t pin_num;
pin_num = __CLZ(__RBIT(u16Pin));
PCRx = (__IO uint16_t *)((uint32_t)(&M4_GPIO->PCRA0) + ((uint32_t)u8Port * 0x40UL) + (pin_num * 4UL));
MODIFY_REG16(*PCRx, GPIO_PCR_INTE, u16ExInt);
}
static rt_err_t hc32_pin_attach_irq(struct rt_device *device, rt_int32_t pin,
rt_uint32_t mode, void (*hdr)(void *args), void *args)
{
rt_base_t level;
rt_int32_t irqindex = -1;
if (pin >= PIN_MAX_NUM)
{
return -RT_ENOSYS;
}
irqindex = GPIO_PIN_INDEX(pin);
if (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 hc32_pin_detach_irq(struct rt_device *device, rt_int32_t pin)
{
rt_base_t level;
rt_int32_t irqindex = -1;
if (pin >= PIN_MAX_NUM)
{
return -RT_ENOSYS;
}
irqindex = GPIO_PIN_INDEX(pin);
if (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 hc32_pin_irq_enable(struct rt_device *device, rt_base_t pin, rt_uint32_t enabled)
{
struct hc32_pin_irq_map *irq_map;
rt_base_t level;
rt_int32_t irqindex = -1;
uint16_t gpio_pin;
stc_exint_init_t stcExintInit;
if ((pin >= PIN_MAX_NUM) || ((PIN_IRQ_ENABLE != enabled) && (PIN_IRQ_DISABLE != enabled)))
{
return -RT_ENOSYS;
}
irqindex = GPIO_PIN_INDEX(pin);
if (irqindex >= ITEM_NUM(pin_irq_map))
{
return RT_ENOSYS;
}
irq_map = &pin_irq_map[irqindex];
gpio_pin = GPIO_PIN(pin);
if (enabled == PIN_IRQ_ENABLE)
{
level = rt_hw_interrupt_disable();
if (pin_irq_hdr_tab[irqindex].pin == -1)
{
rt_hw_interrupt_enable(level);
return RT_ENOSYS;
}
/* Exint config */
EXINT_StructInit(&stcExintInit);
switch (pin_irq_hdr_tab[irqindex].mode)
{
case PIN_IRQ_MODE_RISING:
stcExintInit.u32ExIntLvl = EXINT_TRIGGER_RISING;
break;
case PIN_IRQ_MODE_FALLING:
stcExintInit.u32ExIntLvl = EXINT_TRIGGER_FALLING;
break;
case PIN_IRQ_MODE_RISING_FALLING:
stcExintInit.u32ExIntLvl = EXINT_TRIGGER_BOTH;
break;
case PIN_IRQ_MODE_LOW_LEVEL:
stcExintInit.u32ExIntLvl = EXINT_TRIGGER_LOW;
break;
}
stcExintInit.u32ExIntCh = gpio_pin;
stcExintInit.u32ExIntFAE = EXINT_FILTER_A_ON;
stcExintInit.u32ExIntFAClk = EXINT_FACLK_HCLK_DIV8;
EXINT_Init(&stcExintInit);
/* IRQ sign-in */
hc32_install_irq_handler(&irq_map->irq_config, irq_map->irq_callback, RT_FALSE);
NVIC_EnableIRQ(irq_map->irq_config.irq);
gpio_irq_config(GPIO_PORT(pin), gpio_pin, PIN_EXINT_ON);
rt_hw_interrupt_enable(level);
}
else
{
level = rt_hw_interrupt_disable();
gpio_irq_config(GPIO_PORT(pin), gpio_pin, PIN_EXINT_OFF);
NVIC_DisableIRQ(irq_map->irq_config.irq);
rt_hw_interrupt_enable(level);
}
return RT_EOK;
}
static const struct rt_pin_ops pin_ops =
{
hc32_pin_mode,
hc32_pin_write,
hc32_pin_read,
hc32_pin_attach_irq,
hc32_pin_detach_irq,
hc32_pin_irq_enable,
};
int rt_hw_pin_init(void)
{
return rt_device_pin_register("pin", &pin_ops, RT_NULL);
}
INIT_BOARD_EXPORT(rt_hw_pin_init);
#endif /* RT_USING_PIN */
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