/*!
 * \file      uart.c
 *
 * \brief     Target uart implementation
 *
 * \copyright Revised BSD License, see section \ref LICENSE.
 *
 * \code
 *
 *            _  __ _       ________    _
 *           | |/ /(_)___  / ____/ /_  (_)___
 *           |   // / __ \/ /   / __ \/ / __ \
 *          /   |/ / / / / /___/ / / / / /_/ /
 *         /_/|_/_/_/ /_/\____/_/ /_/_/ .___/
 *                                   /_/
 *           (C) 2022-2025 XinChip
 *
 * \endcode
 *
 * \author     ( XinChip ) Alex-J
 *
 * \author     ( XinChip )
 */

/*-----------------------------------------------------------------------------------
                                       INCLUDE HEADE FILES
 ------------------------------------------------------------------------------------*/
#include "uart.h"
#include "xc_drv_uart.h"

/*------------------------------------------------------------------------------------
                                            Macros
 -------------------------------------------------------------------------------------*/

/*------------------------------------------------------------------------------------
                                         Global Variables
 -------------------------------------------------------------------------------------*/
typedef struct
{
    uint8_t r_buff[26];
    uint8_t w_buff[26];
    uint8_t r_len;
    bool rx_done;
} uart_user_t;

uart_user_t uart_user_ctl;

/*------------------------------------------------------------------------------------
                                            Functions
 -------------------------------------------------------------------------------------*/
void uart_receive_cb(uint8_t *buff, uint16_t len)
{
    static uint8_t cnt = 0;

    for (int i = 0; i < len; i++) {
        uart_user_ctl.r_buff[cnt++] = buff[i];
        uart_user_ctl.r_len++;
    }

    if (cnt == sizeof(uart_user_ctl.r_buff)) {

        cnt                   = 0;
        uart_user_ctl.rx_done = true;
    }
}

/**
 * @brief       uart_demo
 * @details
 * @param       void
 * @retval      void
 */
void uart_demo(void)
{
    DEBUG("__UART_DEMO__\n");

    uint8_t uart_handle = UART0_IDX;

    if (uart_handle == UART0_IDX) {
        GPIO_InitCfg_t gpio_cfg = {0};

        gpio_cfg.Mux            = GPIO_Mux0;
        gpio_cfg.Pull           = GPIO_PULLUP;
        gpio_cfg.Int            = NOT_INT;

        gpio_cfg.Pin            = GPIO_18;
        gpio_cfg.Dir            = GPIO_DIR_OUTPUT;
        gpio_cfg.FunSel         = UART0_TX;
        xc_gpio_init(&gpio_cfg);

        gpio_cfg.Pin    = GPIO_19;
        gpio_cfg.Dir    = GPIO_DIR_INPUT;
        gpio_cfg.FunSel = UART0_RX;
        xc_gpio_init(&gpio_cfg);

        UART_InitCfg_t uart_cfg      = {0};

        uart_cfg.Parity              = UART_PARITY_DISABLE;
        uart_cfg.StopBits            = UART_TCR_STOP_1BITS;
        uart_cfg.WordLength          = UART_DATA_8_BITS;
        uart_cfg.BaudRate            = UART_BAUDRATE_115200;
        uart_cfg.HardwareFlowControl = UART_HWFC_DISABLE;

        xc_uart_init(uart_handle, &uart_cfg);

    } else if (uart_handle == UART1_IDX) {
        GPIO_InitCfg_t gpio_cfg = {0};

        gpio_cfg.Mux            = GPIO_Mux0;
        gpio_cfg.Pull           = GPIO_PULLUP;
        gpio_cfg.Int            = NOT_INT;

        gpio_cfg.Pin            = GPIO_3;
        gpio_cfg.Dir            = GPIO_DIR_OUTPUT;
        gpio_cfg.FunSel         = UART1_TX;
        xc_gpio_init(&gpio_cfg);

        gpio_cfg.Pin    = GPIO_2;
        gpio_cfg.Dir    = GPIO_DIR_INPUT;
        gpio_cfg.FunSel = UART1_RX;
        xc_gpio_init(&gpio_cfg);

        UART_InitCfg_t uart_cfg      = {0};

        uart_cfg.Parity              = UART_PARITY_DISABLE;
        uart_cfg.StopBits            = UART_TCR_STOP_1BITS;
        uart_cfg.WordLength          = UART_DATA_8_BITS;
        uart_cfg.BaudRate            = UART_BAUDRATE_115200;
        uart_cfg.HardwareFlowControl = UART_HWFC_DISABLE;

        xc_uart_init(uart_handle, &uart_cfg);
    } else if (uart_handle == UART2_IDX) {
        GPIO_InitCfg_t gpio_cfg = {0};

        gpio_cfg.Mux            = GPIO_Mux1;
        gpio_cfg.Pull           = GPIO_PULLUP;
        gpio_cfg.Int            = NOT_INT;
        gpio_cfg.FunSel         = GPIO_Dx;

        gpio_cfg.Pin            = GPIO_32; // uart2 tx
        gpio_cfg.Dir            = GPIO_DIR_OUTPUT;

        xc_gpio_init(&gpio_cfg);

        gpio_cfg.Pin = GPIO_31; // uart2 rx
        gpio_cfg.Dir = GPIO_DIR_INPUT;
        xc_gpio_init(&gpio_cfg);

        UART_InitCfg_t uart_cfg      = {0};

        uart_cfg.Parity              = UART_PARITY_DISABLE;
        uart_cfg.StopBits            = UART_STOP_1_BITS;
        uart_cfg.WordLength          = UART_DATA_8_BITS;
        uart_cfg.BaudRate            = UART_BAUDRATE_115200;
        uart_cfg.HardwareFlowControl = UART_HWFC_DISABLE;

        xc_uart_init(uart_handle, &uart_cfg);
    }

    xc_uart_register_receive_cb(uart_receive_cb);

    xc_uart_enable_rx_it(uart_handle);

    if (uart_handle == UART0_IDX) {
        NVIC_EnableIRQ(UART0_IRQn);
    } else if (uart_handle == UART1_IDX) {
        NVIC_EnableIRQ(UART1_IRQn);
    } else if (uart_handle == UART2_IDX) {
        NVIC_EnableIRQ(UART2_IRQn);
    }
    delay_us(20);
    for (int i = 0; i < 26; i++) {
        uart_user_ctl.w_buff[i] = i + 'A';
    }
    xc_uart_send_data(uart_handle, uart_user_ctl.w_buff, 26);

    while (1) {
        if (uart_user_ctl.rx_done == true) {
//            printf("\nrun\n");
            xc_uart_send_data(uart_handle, uart_user_ctl.r_buff, uart_user_ctl.r_len);
            uart_user_ctl.rx_done = false;
            uart_user_ctl.r_len   = 0;
        }
    }
}