#include "api-gpio.h"

static GpioItCallback_t gpioItCallback;

static uint32_t GpioPin(GpioPin_t gpio, uint32_t *pin)
{
    uint32_t port = gpio & GPIOX;
    *pin = gpio & GPIOPIN;
//    *pin = 1 << p;
    return port;
}

void Gpio_Init(GpioPin_t gpio, GPIOModeTypeDef mode)
{
    uint32_t pin = 0;
    uint32_t port = GpioPin(gpio, &pin);
    if (port == GPIOA)
    {
        GPIOA_ModeCfg(pin, mode);
    } else if (port == GPIOB)
    {
        GPIOB_ModeCfg(pin, mode);
    }
}

void Gpio_Set(GpioPin_t gpio)
{
    uint32_t pin = 0;
    uint32_t port = GpioPin(gpio, &pin);
    if (port == GPIOA)
    {
        GPIOA_SetBits(pin);
    } else if (port == GPIOB)
    {
        GPIOB_SetBits(pin);
    }
}

bool Gpio_Read(GpioPin_t gpio)
{
    uint32_t pin = 0;
    uint32_t port = GpioPin(gpio, &pin);
    if (port == GPIOA)
    {
        return GPIOA_ReadPortPin(pin) != 0;
    } else if (port == GPIOB)
    {
        return GPIOB_ReadPortPin(pin) != 0;
    }
    return false;
}

void Gpio_Reset(GpioPin_t gpio)
{
    uint32_t pin = 0;
    uint32_t port = GpioPin(gpio, &pin);
    if (port == GPIOA)
    {
        GPIOA_ResetBits(pin);
    } else if (port == GPIOB)
    {
        GPIOB_ResetBits(pin);
    }
}

void Gpio_Inverse(GpioPin_t gpio)
{
    uint32_t pin = 0;
    uint32_t port = GpioPin(gpio, &pin);
    if (port == GPIOA)
    {
        GPIOA_InverseBits(pin);
    } else if (port == GPIOB)
    {
        GPIOB_InverseBits(pin);
    }
}


void Gpio_IT_Init(GpioPin_t gpio, GPIOModeTypeDef mode, GPIOITModeTpDef modeIt, void(Callback)(void *), void *context)
{
    uint32_t pin = 0;
    uint32_t port = GpioPin(gpio, &pin);
    if (port == GPIOA)
    {
        uint8_t i = 0;
        GPIOA_ModeCfg(pin, mode);
        GPIOA_ITModeCfg(pin, modeIt);
        for (i = 0; i < GPIOAITSIZE; ++i)
        {
            if (pin & (1 << i))
            {
                gpioItCallback.GPIOA_Callback[i].Callback = Callback;
                gpioItCallback.GPIOA_Callback[i].context = context;
                break;
            }
        }
        PFIC_EnableIRQ(GPIO_A_IRQn);
    } else if (port == GPIOB)
    {
        GPIOB_ModeCfg(pin, mode);
        GPIOB_ITModeCfg(pin, modeIt);
        for (int i = 0; i < GPIOBITSIZE; ++i)
        {
            if (pin & (1 << i))
            {
                gpioItCallback.GPIOB_Callback[i].Callback = Callback;
                gpioItCallback.GPIOB_Callback[i].context = context;
                break;
            }
        }

        PFIC_EnableIRQ(GPIO_B_IRQn);
    }
}


__HIGH_CODE
void GPIOA_IRQHandler(void)
{
    uint16_t flag = R16_PA_INT_IF;
    for (int i = 0; i < GPIOAITSIZE; ++i)
    {
        if (flag & (1 << i))
        {
            if (gpioItCallback.GPIOA_Callback[i].Callback)
            {
                gpioItCallback.GPIOA_Callback[i].Callback(gpioItCallback.GPIOA_Callback[i].context);
            }
        }
    }
    GPIOA_ClearITFlagBit(flag); /* 清除中断标志 */
}

#include "stdio.h"

__HIGH_CODE
void GPIOB_IRQHandler(void)
{
    uint16_t flag = R16_PB_INT_IF;//GPIOB_ReadITFlagPort();//R16_PB_INT_IF;
    for (int i = 0; i < GPIOBITSIZE; ++i)
    {
        if (flag & (1 << i))
        {
            if (gpioItCallback.GPIOB_Callback[i].Callback)
            {
                gpioItCallback.GPIOB_Callback[i].Callback(gpioItCallback.GPIOB_Callback[i].context);
            }
        }
    }
    GPIOB_ClearITFlagBit(flag); /* 清除中断标志 */
}