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rt-thread-official/bsp/hc32l136/drivers/drv_gpio.c

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/*
* Copyright (C) 2021, Huada Semiconductor Co., Ltd.
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2021-08-19 pjq first version
*/
#include <rtthread.h>
#include "rthw.h"
#ifdef RT_USING_PIN
#include "gpio.h"
#include "drv_gpio.h"
#include "interrupts_hc32l136.h"
#define GPIO_PIN_INDEX(pin) ((uint8_t)((pin) & 0x0F))
#define GPIO_PORT(pin) ((uint8_t)(((pin) >> 4) * 0x40u))
#define GPIO_PIN(pin) ((uint16_t)(GPIO_PIN_INDEX(pin)))
#define PIN_NUM(port, pin) (((((port) / 0x40u) << 4) | ((pin) & 0x0F)))
#define PIN_MAX_NUM ((GpioPortD / 0x40u * 16) + (GpioPin15 + 1))
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},
{-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},
{-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},
{-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(en_gpio_port_t port, en_gpio_pin_t pin)
{
rt_int32_t irqindex = -1;
irqindex = PIN_NUM(port, pin);
if (pin_irq_hdr_tab[irqindex].hdr)
{
pin_irq_hdr_tab[irqindex].hdr(pin_irq_hdr_tab[irqindex].args);
}
}
void Gpio_IRQHandler(uint8_t u8Param)
{
en_gpio_pin_t i;
en_gpio_port_t enPort;
enPort = (en_gpio_port_t)(GpioPortA + (GpioPortB - GpioPortA) * u8Param);
rt_interrupt_enter();
for (i=GpioPin0; i<=GpioPin15; i++)
{
if(TRUE == Gpio_GetIrqStatus(enPort, i))
{
Gpio_ClearIrq(enPort, i);
pin_irq_handler(enPort, i);
}
}
rt_interrupt_leave();
}
static void _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_WriteOutputIO((en_gpio_port_t)gpio_port, (en_gpio_pin_t)gpio_pin, FALSE);
}
else
{
Gpio_WriteOutputIO((en_gpio_port_t)gpio_port, (en_gpio_pin_t)gpio_pin, TRUE);
}
}
}
static int _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 (FALSE == Gpio_GetInputIO((en_gpio_port_t)gpio_port, (en_gpio_pin_t)gpio_pin))
{
value = PIN_LOW;
}
else
{
value = PIN_HIGH;
}
}
return value;
}
static void _pin_mode(rt_device_t dev, rt_base_t pin, rt_base_t mode)
{
uint8_t gpio_port;
uint16_t gpio_pin;
stc_gpio_config_t pstcGpioCfg;
memset(&pstcGpioCfg, 0, sizeof(pstcGpioCfg));
if (pin >= PIN_MAX_NUM)
{
return;
}
switch (mode)
{
case PIN_MODE_OUTPUT:
pstcGpioCfg.enDir = GpioDirOut;
pstcGpioCfg.enDrv = GpioDrvL;
pstcGpioCfg.enCtrlMode = GpioAHB;
break;
case PIN_MODE_INPUT:
pstcGpioCfg.enDir = GpioDirIn;
pstcGpioCfg.enDrv = GpioDrvL;
pstcGpioCfg.enPuPd = GpioPu;
pstcGpioCfg.enOD = GpioOdDisable;
pstcGpioCfg.enCtrlMode = GpioAHB;
break;
case PIN_MODE_INPUT_PULLUP:
pstcGpioCfg.enDir = GpioDirIn;
pstcGpioCfg.enDrv = GpioDrvL;
pstcGpioCfg.enPuPd = GpioPu;
pstcGpioCfg.enOD = GpioOdDisable;
pstcGpioCfg.enCtrlMode = GpioAHB;
break;
case PIN_MODE_INPUT_PULLDOWN:
pstcGpioCfg.enDir = GpioDirIn;
pstcGpioCfg.enDrv = GpioDrvL;
pstcGpioCfg.enPuPd = GpioPd;
pstcGpioCfg.enOD = GpioOdDisable;
pstcGpioCfg.enCtrlMode = GpioAHB;
break;
case PIN_MODE_OUTPUT_OD:
pstcGpioCfg.enDir = GpioDirOut;
pstcGpioCfg.enDrv = GpioDrvL;
pstcGpioCfg.enOD = GpioOdEnable;
pstcGpioCfg.enCtrlMode = GpioAHB;
break;
default:
break;
}
gpio_port = GPIO_PORT(pin);
gpio_pin = GPIO_PIN(pin);
Gpio_Init((en_gpio_port_t)gpio_port, (en_gpio_pin_t)gpio_pin, &pstcGpioCfg);
}
static rt_err_t _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 = pin;
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 _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 = pin;
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 _pin_irq_enable(struct rt_device *device, rt_base_t pin, rt_uint32_t enabled)
{
rt_base_t level;
en_gpio_port_t gpio_port;
en_gpio_pin_t gpio_pin;
rt_int32_t irqindex;
stc_gpio_config_t pstcGpioCfg;
if ((pin >= PIN_MAX_NUM) || ((PIN_IRQ_ENABLE != enabled) && (PIN_IRQ_DISABLE != enabled)))
{
return -RT_ENOSYS;
}
irqindex = pin;
gpio_port = (en_gpio_port_t)GPIO_PORT(pin);
gpio_pin = (en_gpio_pin_t)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 */
pstcGpioCfg.enDir = GpioDirIn;
pstcGpioCfg.enDrv = GpioDrvL;
pstcGpioCfg.enPuPd = GpioPu;
pstcGpioCfg.enOD = GpioOdDisable;
pstcGpioCfg.enCtrlMode = GpioAHB;
Gpio_Init(gpio_port, gpio_pin, &pstcGpioCfg);
Gpio_ClearIrq(gpio_port, gpio_pin);
switch (pin_irq_hdr_tab[irqindex].mode)
{
case PIN_IRQ_MODE_RISING:
Gpio_EnableIrq(gpio_port, gpio_pin, GpioIrqRising);
break;
case PIN_IRQ_MODE_FALLING:
Gpio_EnableIrq(gpio_port, gpio_pin, GpioIrqFalling);
break;
case PIN_IRQ_MODE_HIGH_LEVEL:
Gpio_EnableIrq(gpio_port, gpio_pin, GpioIrqHigh);
break;
case PIN_IRQ_MODE_LOW_LEVEL:
Gpio_EnableIrq(gpio_port, gpio_pin, GpioIrqLow);
break;
}
EnableNvic((IRQn_Type)(pin / 16), IrqLevel3, TRUE);
rt_hw_interrupt_enable(level);
}
else
{
level = rt_hw_interrupt_disable();
switch (pin_irq_hdr_tab[irqindex].mode)
{
case PIN_IRQ_MODE_RISING:
Gpio_DisableIrq(gpio_port, gpio_pin, GpioIrqRising);
break;
case PIN_IRQ_MODE_FALLING:
Gpio_DisableIrq(gpio_port, gpio_pin, GpioIrqFalling);
break;
case PIN_IRQ_MODE_RISING_FALLING:
break;
case PIN_IRQ_MODE_LOW_LEVEL:
Gpio_DisableIrq(gpio_port, gpio_pin, GpioIrqLow);
break;
}
rt_hw_interrupt_enable(level);
}
return RT_EOK;
}
static const struct rt_pin_ops _pin_ops =
{
_pin_mode,
_pin_write,
_pin_read,
_pin_attach_irq,
_pin_detach_irq,
_pin_irq_enable,
};
int rt_hw_pin_init(void)
{
Sysctrl_SetPeripheralGate(SysctrlPeripheralGpio, TRUE);
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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