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143 lines
3.6 KiB
143 lines
3.6 KiB
/*
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* Copyright (c) 2006-2021, RT-Thread Development Team
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Change Logs:
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* Date Author Notes
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* 2025-10-25 Administrator the first version
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*/
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# include <rtthread.h>
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# include <rtdevice.h>
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# include <board.h>
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#include "uart_framework.h"
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#include "data_comm.h"
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#define LOG_TAG "uart.rx"
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#define LOG_LVL LOG_LVL_DBG
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#define UART_NAME "uart2"
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#define UART_BAUD_RATE BAUD_RATE_115200
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#define RS485RD GET_PIN(A,10)
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#define RS485_RX() rt_pin_write(RS485RD, 0)
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#define RS485_TX() rt_pin_write(RS485RD, 1)
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#define RECV_BUF_SIZE (512)
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#define FRAME_TIMEOUT_MS 20
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#define SEND_INTERVAL_MS 0
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#define REQUEST_TIMEOUT_MS 250
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static uart_framework_t uf = RT_NULL;
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static void rs485_set_tx(void)
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{
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RS485_TX();
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rt_thread_mdelay(1);
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}
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static void rs485_set_rx(void)
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{
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rt_thread_mdelay(1);
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RS485_RX();
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}
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static void rs485_gpio_init(void)
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{
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rt_pin_mode(RS485RD, PIN_MODE_OUTPUT);
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rs485_set_rx();
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}
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static rt_err_t uart_rs485_init(void)
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{
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rt_device_t serial_device = rt_device_find(UART_NAME);
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if (serial_device == RT_NULL)
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{
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rt_kprintf("not find the serial device:%s!", UART_NAME);
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return -RT_ERROR;
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}
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/* 修改串口配置 */
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struct serial_configure config = RT_SERIAL_CONFIG_DEFAULT;
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config.baud_rate = UART_BAUD_RATE;
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config.bufsz = RECV_BUF_SIZE; // 接收缓冲区大小
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rt_device_control(serial_device, RT_DEVICE_CTRL_CONFIG, &config);
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rs485_gpio_init();
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struct uart_framework_cfg cfg = { .uart_name = UART_NAME, .max_frame_size = RECV_BUF_SIZE, .frame_interval_ms =
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FRAME_TIMEOUT_MS, .send_interval_ms = SEND_INTERVAL_MS, .rs485_txd = rs485_set_tx, .rs485_rxd = rs485_set_rx };
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//如果不是485，则配置rs485_txd和rs485_rxd为RT_NULL
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uf = uart_framework_create(&cfg);
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if (uf == RT_NULL)
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{
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rt_kprintf("SCCM link create failed on %s\n", UART_NAME);
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return -RT_ERROR;
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}
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else
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{
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rt_kprintf("SCCM link create success on %s!\n", UART_NAME);
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return RT_EOK;
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}
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}
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static rt_err_t frame_handler(rt_uint8_t *data, rt_size_t size)
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{
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//解析数据
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rt_err_t res;
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struct proc_request *req = rt_malloc(sizeof(struct proc_request));
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if (!req){ return RT_ERROR;}
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rt_strncpy(req->input, (const char *)data, sizeof(req->input));
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req->input_len = size;
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req->sem = rt_malloc(sizeof(struct rt_semaphore));
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if (!req->sem) {
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rt_free(req);
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return RT_ERROR;
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}
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rt_sem_init(req->sem, "uart_resp", 0, RT_IPC_FLAG_FIFO);
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// 发送到处理线程
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if (rt_mq_send(proc_mq, &req, sizeof(req)) == RT_EOK)
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{ // 等待处理完成
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if (rt_sem_take(req->sem, RT_WAITING_FOREVER) == RT_EOK)
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{
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res= uart_framework_send(uf, (rt_uint8_t *)req->output, req->output_len);
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}
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}
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// 清理
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rt_sem_detach(req->sem); // 或 rt_sem_delete
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rt_free(req->sem);
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rt_free(req);
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return res;
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}
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static void rs485_rx_handler(void *params)
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{
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while (1)
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{
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if(uart_framework_receive(uf, RT_WAITING_FOREVER, RT_NULL, RT_NULL, 0) == RT_EOK)
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{
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frame_handler(uf->rx_buf, uf->rx_size);
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}
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}
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}
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int app_uart_rs485_startup(void)
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{
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rt_err_t rst;
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rst = uart_rs485_init();
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if (rst != RT_EOK)
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return rst;
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rt_thread_t t = rt_thread_create("rs485rx", rs485_rx_handler, RT_NULL, 1024 * 4, 12, 20);
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if (t == RT_NULL)
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return -RT_ENOMEM;
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rst = rt_thread_startup(t);
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return rst;
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}
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//INIT_APP_EXPORT(app_uart_rs485_startup);
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