/*
 * Copyright (c) 2006-2021, RT-Thread Development Team
 *
 * SPDX-License-Identifier: Apache-2.0
 *
 * Change Logs:
 * Date           Author       Notes
 * 2022-06-14     fize       the first version
 */
#include "user_uart.h"



static rt_err_t uart3_tx_complete(rt_device_t dev, void *buffer)
{
    //todo: uart3_tx_complete sem: do nothing for now.
    //since dma for tx not enabled,so this callback will not be called at any time.
    LOG_I("massage sent %s",strlen(buffer));
    return RT_EOK;
}

//dev       设备句柄（回调函数参数）
//size    缓冲区数据大小（回调函数参数）
//still in ISR func,so can only use ulog at asynchronous mode.
static rt_err_t uart3_rx_complete(rt_device_t dev, rt_size_t size)
{

    uart3_simpack.rx_num=size;
    rt_sem_release(&uart3_simpack.rx_sem);
    return RT_EOK;
}

rt_device_t uart3_init(void)
{
    struct serial_configure config;

    serial3 = rt_device_find(USER_UART_NAME);
    if (serial3 == RT_NULL)
    {
        LOG_E("could not find device: %s", USER_UART_NAME);
        return RT_NULL;
    }
    config.baud_rate = BAUD_RATE_115200;        //修改波特率为 115200
    config.data_bits = DATA_BITS_8;           //数据位 8
    config.stop_bits = STOP_BITS_1;           //停止位 1
    config.bufsz = 2048;                   //修改缓冲区 buff size 为 2048
    config.parity = PARITY_NONE;           //无奇偶校验位
    rt_device_control(serial3, RT_DEVICE_CTRL_CONFIG, &config);
    if ((rt_device_set_tx_complete(serial3, uart3_tx_complete) || rt_device_set_rx_indicate(serial3, uart3_rx_complete))
            != RT_EOK)
    {
        LOG_E("could not set %s 's rx|tx callback func", USER_UART_NAME);
        return RT_NULL;
    }
    //do not ust dma for rx and tx at same time
    if (  rt_device_open(serial3,  RT_DEVICE_FLAG_INT_TX |RT_DEVICE_FLAG_DMA_RX|RT_DEVICE_OFLAG_RDWR ))
    {
        LOG_E("could not open device: %s", USER_UART_NAME);
        return RT_NULL;
    }
    rt_sem_init(&uart3_simpack.rx_sem, "rx3_sem", 0, RT_IPC_FLAG_PRIO);
    rt_sem_init(&uart3_simpack.tx_sem, "tx3_sem", 0, RT_IPC_FLAG_PRIO);
    return serial3;
}