66 lines
2.1 KiB
C
66 lines
2.1 KiB
C
/*
|
|
* 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;
|
|
}
|
|
|