/*!
 * \file      i2c_slave.c
 *
 * \brief     Target i2c slave 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 "i2c_slave.h"
#include "xc6xxx_hal_i2c.h"

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

/*------------------------------------------------------------------------------------
                                         Global Variables
 -------------------------------------------------------------------------------------*/

/*------------------------------------------------------------------------------------
                                            Functions
 -------------------------------------------------------------------------------------*/
/**
 * @brief       i2c_slave_demo
 * @details
 * @param       void
 * @retval      void
 */
void i2c_slave_demo(void) {
  DEBUG("i2c_slave_test \n");
  I2C_InitTypeDef I2C_InitStruct = {0};
  GPIO_InitTypeDef GPIO_InitStruct = {0};

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

  GPIO_InitStruct.Pin = GPIO_5;
  GPIO_InitStruct.Dir = GPIO_DIR_OUTPUT;
  GPIO_InitStruct.FunSel = I2C_SCL;
  GPIO_Init(&GPIO_InitStruct);

  GPIO_InitStruct.Pin = GPIO_4;
  GPIO_InitStruct.Dir = GPIO_DIR_INPUT;
  GPIO_InitStruct.FunSel = I2C_SDA;
  GPIO_Init(&GPIO_InitStruct);

  I2C_InitStruct.I2C_ClockSpeed = I2C_ClockSpeed_400K;
  I2C_InitStruct.I2C_Mode = I2C_Mode_SLAVE;
  I2C_InitStruct.I2C_OwnAddress1 = 0xA0 >> 1;

  I2C_Init(XC_I2C, &I2C_InitStruct);

  I2C_Enable_IT(XC_I2C, I2C_INTR_STAT_RX_DONE_GENERATED |
                            I2C_INTR_STAT_STOP_DET_GENERATED |
                            I2C_INTR_STAT_RD_REQ_GENERATED |
                            I2C_INTR_STAT_RX_FULL_GENERATED);

  I2C_FIFO_IT_RXTL_Set(XC_I2C, I2C_RX_TL_FIFO_1);
  I2C_FIFO_IT_TXTL_Set(XC_I2C, I2C_TX_TL_FIFO_0);

  NVIC_EnableIRQ(I2C_IRQn);

  while (1) {
    if (i2c_slave_rx_flag == 1) {
      for (int i = 0; i < 32; i++) {
        DEBUG("test_buff[%d]=%d\n", i, i2c_slave_rx_buff[i]);
      }
      i2c_slave_rx_flag = 0;
    }
  }
}