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/*
* Copyright (c) 2006-2021, YICHIP Technology Co.,Ltd.
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2021-09-09 WSY first version
*/
#include <rtthread.h>
#include <rtdevice.h>
#include <board.h>
#include <rthw.h>
#define PIN_MAX_NUM (48)
typedef void (*pin_callback_t)(void *args);
struct pin
{
uint32_t package_index;
const char *name;
IRQn_Type irq;
rt_uint32_t irq_mode;
pin_callback_t callback;
void *callback_args;
};
typedef struct pin pin_t;
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},
};
static void yc_pin_mode(rt_device_t dev, rt_base_t pin, rt_uint8_t mode)
{
/* Configure GPIO_InitStructure */
if (mode == PIN_MODE_OUTPUT)
{
/* output setting */
GPIO_CONFIG(pin) = OUTPUT_LOW;
}
else if (mode == PIN_MODE_INPUT)
{
/* input setting: not pull. */
GPIO_CONFIG(pin) = INPUT;
}
else if (mode == PIN_MODE_INPUT_PULLUP)
{
/* input setting: pull up. */
GPIO_CONFIG(pin) = PULL_PU;
}
else if (mode == PIN_MODE_INPUT_PULLDOWN)
{
/* input setting: pull down. */
GPIO_CONFIG(pin) = PULL_PD;
}
else if (mode == PIN_MODE_OUTPUT_OD)
{
/* output setting: od. */
GPIO_CONFIG(pin) = PULL_PU;
}
}
static void yc_pin_write(rt_device_t dev, rt_base_t pin, rt_uint8_t value)
{
if (value)
{
GPIO_CONFIG(pin) = OUTPUT_HIGH;
}
else
{
GPIO_CONFIG(pin) = OUTPUT_LOW;
}
}
static rt_ssize_t yc_pin_read(rt_device_t dev, rt_base_t pin)
{
//return GPIO_IN(pin / 16) & (1 << (pin % 16)) ? 1 : 0;
return GPIO_ReadInputDataBit((GPIO_TypeDef)(pin / 16), (GPIO_Pin_TypeDef)(1 << (pin % 16)));
}
static rt_err_t yc_pin_attach_irq(struct rt_device *device,
rt_base_t pin,
rt_uint8_t mode,
pin_callback_t cb,
void *args)
{
rt_int32_t index = -1;
rt_base_t level;
if (pin >= PIN_MAX_NUM)
{
return -RT_EINVAL;
}
index = pin;
level = rt_hw_interrupt_disable();
pin_irq_hdr_tab[index].pin = pin;
pin_irq_hdr_tab[index].hdr = cb;
pin_irq_hdr_tab[index].mode = mode;
pin_irq_hdr_tab[index].args = args;
rt_hw_interrupt_enable(level);
return RT_EOK;
}
static rt_err_t yc_pin_detach_irq(struct rt_device *device, rt_base_t pin)
{
rt_int32_t index = -1;
rt_base_t level;
if (pin >= PIN_MAX_NUM)
{
return -RT_EINVAL;
}
index = pin;
level = rt_hw_interrupt_disable();
pin_irq_hdr_tab[index].pin = -1;
pin_irq_hdr_tab[index].hdr = RT_NULL;
pin_irq_hdr_tab[index].mode = 0;
pin_irq_hdr_tab[index].args = RT_NULL;
rt_hw_interrupt_enable(level);
return RT_EOK;
}
static rt_err_t yc_pin_irq_enable(struct rt_device *device,
rt_base_t pin,
rt_uint8_t enabled)
{
rt_int32_t index;
rt_base_t level = 0;
rt_int8_t TrigMode = 0;
if (pin >= PIN_MAX_NUM)
{
return -RT_EINVAL;
}
index = pin;
if (enabled == PIN_IRQ_ENABLE)
{
switch (pin_irq_hdr_tab[index].mode)
{
case PIN_IRQ_MODE_RISING:
TrigMode = EXTI_Trigger_Rising;
break;
case PIN_IRQ_MODE_FALLING:
TrigMode = EXTI_Trigger_Falling;
break;
case PIN_IRQ_MODE_RISING_FALLING:
TrigMode = EXTI_Trigger_Rising_Falling;
break;
case PIN_IRQ_MODE_HIGH_LEVEL:
GPIO_CONFIG(pin) = PULL_PD;
TrigMode = EXTI_Trigger_HighLev;
break;
case PIN_IRQ_MODE_LOW_LEVEL:
GPIO_CONFIG(pin) = PULL_PU;
TrigMode = EXTI_Trigger_LowLev;
break;
default:
rt_hw_interrupt_enable(level);
return -RT_EINVAL;
}
level = rt_hw_interrupt_disable();
NVIC_EnableIRQ(GPIO_IRQn);
EXTI_LineConfig((EXTI_LineTypeDef)(pin / 16), (EXTI_PIN_TypeDef)(1 << (pin % 16)), (EXTI_TriggerTypeDef)TrigMode);
rt_hw_interrupt_enable(level);
}
else if (enabled == PIN_IRQ_DISABLE)
{
NVIC_DisableIRQ(GPIO_IRQn);
MGPIO->INTR.reg[pin / 16] &= ~(1 << (pin % 16));
}
else
{
return -RT_ENOSYS;
}
return RT_EOK;
}
const static struct rt_pin_ops yc3122_pin_ops =
{
yc_pin_mode,
yc_pin_write,
yc_pin_read,
yc_pin_attach_irq,
yc_pin_detach_irq,
yc_pin_irq_enable,
RT_NULL,
};
int rt_hw_pin_init(void)
{
int result;
result = rt_device_pin_register("pin", &yc3122_pin_ops, RT_NULL);
return result;
}
INIT_BOARD_EXPORT(rt_hw_pin_init);
void GPIO_IRQHandler(void)
{
// int i;
rt_interrupt_enter();
// for (i = 0; i < PIN_MAX_NUM; i++)
// {
// if ((GPIO_TRIG_MODE(i / 16) & (1 << (i % 16))) == (GPIO_IN(i / 16) & (1 << (i % 16))))
// {
// if (pin_irq_hdr_tab[i].hdr)
// {
// pin_irq_hdr_tab[i].hdr(pin_irq_hdr_tab[i].args);
// }
// }
// }
rt_interrupt_leave();
}
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