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const i2c_slave_config_t i2c_slv_config = {
    .addr_bit_len = I2C_ADDR_BIT_LEN_7,   // 7-bit address
    .clk_source = I2C_CLK_SRC_DEFAULT,    // set the clock source
    .i2c_port = 0,                        // set I2C port number
    .send_buf_depth = 256,                // set tx buffer length
    .scl_io_num = 7,                      // SCL gpio number
    .sda_io_num = 6,                      // SDA gpio number
    .slave_addr = 0x42,                   // slave address
};

void IIC_Config(void)
{
    //Init bus
    (void)i2c_new_slave_device(&i2c_slv_config, &i2c_slave_handle);
    
    i2c_receive_queue = xQueueCreate(1, sizeof(i2c_slave_rx_done_event_data_t));
    
    //Define "RX Done" callback
    i2c_slave_event_callbacks_t cbs = {
    .on_recv_done = IIC_Slave_Interrupt_RXDone_callback,
    };
    (void)i2c_slave_register_event_callbacks(i2c_slave_handle, &cbs, i2c_receive_queue);
}

void IIC_Write(const uint8_t* p_src, uint8_t ucNumBytes)
{
    (void)i2c_slave_transmit(i2c_slave_handle, p_src, ucNumBytes, 10000);
}

void IIC_Read(uint8_t* p_dest, uint8_t ucNumBytes)
{
    (void)i2c_slave_receive(i2c_slave_handle, p_dest, ucNumBytes);
}