#include "api_rt_gpio.h"
#include "gd32f30x.h"

Gpio_Handle const Gpios[GPIO_PIN_COUNT] = {
    [0] = {.GpioBase = GPIOC, .Index = 0},
    [1] = {.GpioBase = GPIOC, .Index = 1},
    [2] = {.GpioBase = GPIOC, .Index = 8},
    [3] = {.GpioBase = GPIOC, .Index = 7},
    [4] = {.GpioBase = GPIOC, .Index = 15},
    [5] = {.GpioBase = GPIOC, .Index = 13},
    [6] = {.GpioBase = GPIOC, .Index = 14},
    [7] = {.GpioBase = GPIOC, .Index = 10},
    [8] = {.GpioBase = GPIOC, .Index = 11},
    [9] = {.GpioBase = GPIOD, .Index = 2},
    [10] = {.GpioBase = GPIOB, .Index = 9},
    [11] = {.GpioBase = GPIOB, .Index = 8},
    [12] = {.GpioBase = GPIOA, .Index = 12},
    [13] = {.GpioBase = GPIOC, .Index = 12},
    [14] = {.GpioBase = GPIOB, .Index = 2},
    [15] = {.GpioBase = GPIOB, .Index = 10},
};

void iRtGpio_Init()
{

}

void iGpio_SetMode(uint16_t pin, ApiGpio_PinMode mode)
{
    const Gpio_Handle *const gpio = &Gpios[pin];
   
    switch (mode)
    {
    case ApiGpio_Input:
         gpio_init(gpio->GpioBase, GPIO_MODE_IPD, GPIO_OSPEED_50MHZ, BIT(gpio->Index));
        break;
    case ApiGpio_Output:
         gpio_init(gpio->GpioBase, GPIO_MODE_OUT_PP, GPIO_OSPEED_50MHZ, BIT(gpio->Index));
        break;
    case ApiGpio_AlternateFunction:
         gpio_init(gpio->GpioBase, GPIO_MODE_AF_PP, GPIO_OSPEED_50MHZ, BIT(gpio->Index));
        break;
    default:
        break;
    }

}


ApiGpio_Level iGpio_Read(uint16_t pin)
{
    const Gpio_Handle *const gpio = &Gpios[pin];

    ApiGpio_Level level = ApiGpio_LowLevel;

    if ((uint32_t)RESET != (GPIO_ISTAT(gpio->GpioBase)&((uint32_t)((uint32_t)0x01U << gpio->Index))))
    {
        level = ApiGpio_HighLevel;
    }

    return level;
}


void iGpio_Write(uint16_t pin, ApiGpio_Level level)
{
    const Gpio_Handle *const gpio = &Gpios[pin];

    if (level == ApiGpio_HighLevel)
    {
      GPIO_OCTL(gpio->GpioBase) |= ((uint32_t)((uint32_t)0x01U << gpio->Index));
    }
    else
    {
      GPIO_OCTL(gpio->GpioBase) &= ~((uint32_t)((uint32_t)0x01U << gpio->Index));
    }
}