TT12-MCU/applications/uart_3S.c

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/*
* Copyright (c) 2006-2022, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2019-04-16 misonyo first implementation.
*/
/*
* DMA 使
* uart_dma_sample
* uart_dma_sample uart3
* 使使
* "hello RT-Thread!"
*/
#include <rtthread.h>
#include <dfs_file.h>
#include <usrcfg.h>
#include <board.h>
#define LOG_TAG "RS232"
#define LOG_LVL LOG_LVL_DBG
#include <ulog.h>
#ifdef WORK_BOARD
#define SAMPLE_UART_NAME "uart1" /* 串口设备名称 */
#else
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#define SAMPLE_UART_NAME "uart3" /* 串口设备名称 */
#endif
#ifndef MIN_FRAME_LEN
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#define MIN_FRAME_LEN 10
#endif
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/* 串口接收消息结构*/
struct rx_msg
{
rt_device_t dev;
rt_size_t size;
};
/* 串口设备句柄 */
static rt_device_t serial;
/* 消息队列控制块 */
static struct rt_messagequeue rx_mq;
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/* 接收数据回调函数 */
static rt_err_t uart_input(rt_device_t dev, rt_size_t size)
{
resetTM();//重设超时
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struct rx_msg msg;
rt_err_t result;
static rt_size_t cachecnt=0;
cachecnt += size;
if (cachecnt < MIN_FRAME_LEN) {
LOG_W("not enough data, cached and waiting...");//处理半包
return;
}
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msg.dev = dev;
msg.size = cachecnt;
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result = rt_mq_send(&rx_mq, &msg, sizeof(msg));
if ( result == -RT_EFULL)
{
/* 消息队列满 */
LOG_W("message queue full");
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}
cachecnt = 0;
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return result;
}
struct rx_msg msg;
//extern struct rt_event update_cfg;
//extern int time2Str(char *str);
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static void serial_thread_entry(void *parameter)
{
// struct rx_msg msg;
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rt_err_t result;
rt_uint32_t rx_length=0;//单次收到的数据长度
static char rx_buffer[RT_SERIAL_RB_BUFSZ/4 + 1];
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while (1)
{
rt_memset(&msg, 0, sizeof(msg));
/* 从消息队列中读取消息*/
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result = rt_mq_recv(&rx_mq, &msg, sizeof(msg), RT_WAITING_FOREVER);
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if (result == RT_EOK)
{
/* 从串口读取数据*/
rx_length = rt_device_read(msg.dev, 0, rx_buffer, msg.size);
if (!rx_length) {
LOG_W("read from RS232 error");
continue;
}
LOG_I("%d Bytes received from RS232",rx_length);
LOG_HEX("232rx:",16,rx_buffer,rx_length);//print what received.
parseRS232(rx_buffer, rx_length);
}
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}
}
static int uart_dma_sample(int argc, char *argv[])
{
rt_err_t ret = RT_EOK;
char uart_name[RT_NAME_MAX];
static char msg_pool[256];
char str[] = {0x01,0x03,0x00,0x00,0x00,0x1d,0x85,0xc3};
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if (argc == 2)
{
rt_strncpy(uart_name, argv[1], RT_NAME_MAX);
}
else
{
rt_strncpy(uart_name, SAMPLE_UART_NAME, RT_NAME_MAX);
}
/* 查找串口设备 */
serial = rt_device_find(uart_name);
if (!serial)
{
rt_kprintf("find %s failed!\n", uart_name);
return RT_ERROR;
}
/* 初始化消息队列 */
rt_mq_init(&rx_mq, "rx_mq",
msg_pool, /* 存放消息的缓冲区 */
sizeof(struct rx_msg), /* 一条消息的最大长度 */
sizeof(msg_pool), /* 存放消息的缓冲区大小 */
RT_IPC_FLAG_FIFO); /* 如果有多个线程等待,按照先来先得到的方法分配消息 */
#ifdef TR485
struct serial_configure config = RT_SERIAL_CONFIG_DEFAULT; /* 初 始 化 配 置 参 数 */
/* step2 修 改 串 口 配 置 参 数 */
config.baud_rate = BAUD_RATE_9600; //修 改 波 特 率 为 9600
config.data_bits = DATA_BITS_8; //数 据 位 8
config.stop_bits = STOP_BITS_1; //停 止 位 1
config.bufsz = 128; //修 改 缓 冲 区 buff size 为 128
config.parity = PARITY_NONE; //无 奇 偶 校 验 位
/* step3 控 制 串 口 设 备。 通 过 控 制 接 口 传 入 命 令 控 制 字, 与 控 制 参 数 */
rt_device_control(serial, RT_DEVICE_CTRL_CONFIG, &config);
#endif
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/* 以 DMA 接收及轮询发送方式打开串口设备 */
rt_device_open(serial, RT_DEVICE_FLAG_DMA_RX);
/* 设置接收回调函数 */
rt_device_set_rx_indicate(serial, uart_input);
/* 发送字符串 */
#ifdef TR485
rt_pin_write(TR485_RE, PIN_HIGH);
rt_device_write(serial, 0, str, sizeof(str));
rt_pin_write(TR485_RE, PIN_LOW);
#endif
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/* 创建 serial 线程 */
rt_thread_t thread = rt_thread_create("RS232", serial_thread_entry, RT_NULL, 1024*5, 25+1, 10);
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/* 创建成功则启动线程 */
if (thread != RT_NULL)
{
rt_thread_startup(thread);
}
else
{
ret = RT_ERROR;
}
return ret;
}
/* 导出到 msh 命令列表中 */
//MSH_CMD_EXPORT(uart_dma_sample, uart device dma sample);
INIT_COMPONENT_EXPORT(uart_dma_sample);
/**
* 3S
* @param din
* @param len
*/
void sendTo3S(uint8_t *din, size_t len)
{
size_t rst = rt_device_write(serial, 0, din, len);
LOG_D("send %d Bytes done.",rst);
}
#ifdef DEMO
void sendData(int argc, char *argv[])
{
//待发数据
char str[][50] =
{
{0x01,0x03,0x00,0x00,0x00,0x1d,0x85,0xc3},
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"hello\r\n",
{0x5A,0xA5, 0x31, 0x32, 0x19, 0x06, 0x00, 0x01, 0x01, 0x1C, 0xED }
};
size_t size[]={8,strlen(str[1]),11};//对应每一维数据长度
size_t index = 0;
if (argc == 2) {
index = atoi(argv[1]);
}
size_t rst = rt_device_write(serial, 0, str[index], size[index]);
LOG_D("send %d Bytes ok.",rst);
}
MSH_CMD_EXPORT(sendData,3)
#endif