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/*
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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 <stdio.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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//#include <ulog.h>
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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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{ |
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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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//这里直接返回接收到的数据
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// rt_uint8_t *frame_data = data;
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// rt_uint16_t frame_len = size;
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// rt_kprintf("rx_buf", 16, frame_data, frame_len);
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// rt_err_t res = uart_framework_send(uf, frame_data, frame_len);
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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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@ -0,0 +1,15 @@ |
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/*
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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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#ifndef APPLICATIONS_DATA_UART_RS485_H_ |
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#define APPLICATIONS_DATA_UART_RS485_H_ |
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int app_uart_rs485_startup(void); |
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#endif /* APPLICATIONS_DATA_UART_RS485_H_ */ |
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@ -0,0 +1,179 @@ |
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/*
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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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* 2025-10-22 Administrator the first version |
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*/ |
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#include "dfs_fs.h" |
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#include <rtdbg.h> |
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#include <board.h> |
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#include"drv_common.h" |
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#define DBG_TAG "sd_cd" |
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#define DBG_LVL DBG_LOG |
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#include <rtdbg.h> |
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// ==================== 配置参数 ====================
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#define SD_DEVICE_NAME "sd0" |
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#define MOUNT_POINT "/" |
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// CD 引脚配置（根据你的 BSP 修改）
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#define CD_PIN GET_PIN(A, 0) // 示例：PA0，根据实际修改！
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// 消息类型
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#define SD_EVENT_INSERTED 1 |
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#define SD_EVENT_REMOVED 2 |
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// ===============================================
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static rt_mq_t sd_event_mq = RT_NULL; |
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static rt_sem_t mount_sync_sem = RT_NULL; |
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/**
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* @brief CD 引脚中断回调 |
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*/ |
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void cd_pin_irq(void *param) |
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{ |
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rt_uint8_t event; |
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rt_base_t level = rt_hw_interrupt_disable(); |
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// 读取当前电平
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int pin_level = rt_pin_read(CD_PIN); |
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if (pin_level == PIN_HIGH) |
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{ |
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rt_kprintf("SD Card removed (CD high)\n"); |
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event = SD_EVENT_REMOVED; |
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} |
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else // PIN_LOW
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{ |
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rt_kprintf("SD Card inserted (CD low)\n"); |
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event = SD_EVENT_INSERTED; |
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} |
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// 发送事件到消息队列
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if (sd_event_mq != RT_NULL) |
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{ |
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rt_mq_send(sd_event_mq, &event, 1); |
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} |
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rt_hw_interrupt_enable(level); |
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} |
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/**
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* @brief 初始化 CD 引脚为外部中断模式 |
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*/ |
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int cd_pin_init(void) |
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{ |
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rt_pin_mode(CD_PIN, PIN_MODE_INPUT_PULLUP); // 内部上拉
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rt_pin_attach_irq(CD_PIN, PIN_IRQ_MODE_FALLING | PIN_IRQ_MODE_RISING, cd_pin_irq, RT_NULL); |
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rt_pin_irq_enable(CD_PIN, ENABLE); // 使能中断
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return 0; |
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} |
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/**
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* @brief 处理 SD 卡插拔事件的主线程 |
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*/ |
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void sd_card_event_thread(void *parameter) |
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{ |
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uint8_t event; |
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rt_bool_t mounted = RT_FALSE; |
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rt_kprintf("SD card event thread started...\n"); |
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while (1) |
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{ |
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// 等待事件
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if (rt_mq_recv(sd_event_mq, &event, 1, RT_WAITING_FOREVER) != RT_EOK) |
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continue; |
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switch (event) |
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{ |
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case SD_EVENT_INSERTED: |
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if (!mounted) |
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{ |
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rt_kprintf("Initializing and mounting SD card...\n"); |
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// 等待设备 ready（可选）
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rt_thread_mdelay(100); |
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// 尝试挂载
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if (dfs_mount(SD_DEVICE_NAME, MOUNT_POINT, "elm", 0, 0) == RT_EOK) |
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{ |
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rt_kprintf("SD card mounted to %s\n", MOUNT_POINT); |
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mounted = RT_TRUE; |
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// 通知其他模块可以使用 SD 卡
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if (mount_sync_sem) |
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rt_sem_release(mount_sync_sem); |
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} |
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else |
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{ |
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rt_kprintf("Failed to mount SD card\n"); |
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} |
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} |
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break; |
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case SD_EVENT_REMOVED: |
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if (mounted) |
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{ |
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if (dfs_unmount(MOUNT_POINT) == 0) |
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{ |
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rt_kprintf("SD card unmounted\n"); |
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mounted = RT_FALSE; |
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} |
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else |
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{ |
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rt_kprintf("Unmount failed or not mounted\n"); |
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} |
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} |
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break; |
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default: |
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break; |
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} |
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} |
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} |
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/**
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* @brief 启动 SD 卡热插拔检测 |
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*/ |
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int stm32_sdcard_hotplug_init(void) |
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{ |
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rt_thread_t tid; |
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// 创建事件消息队列
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sd_event_mq = rt_mq_create("sd_event", 1, 10, RT_IPC_FLAG_FIFO); |
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if (sd_event_mq == RT_NULL) |
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{ |
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rt_kprintf("Failed to create message queue for SD event!\n"); |
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return -RT_ENOMEM; |
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} |
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// 创建同步信号量（可选，用于通知挂载完成）
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mount_sync_sem = rt_sem_create("sd_mount", 0, RT_IPC_FLAG_FIFO); |
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// 创建事件处理线程
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tid = rt_thread_create("sd_event", |
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sd_card_event_thread, |
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RT_NULL, |
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2048, |
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RT_THREAD_PRIORITY_MAX - 2, |
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10); |
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if (tid != RT_NULL) |
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{ |
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rt_thread_startup(tid); |
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LOG_I("SD event thread created\n"); |
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} |
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else |
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{ |
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rt_kprintf("Failed to create SD event thread!\n"); |
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return -RT_ERROR; |
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} |
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return RT_EOK; |
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} |
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//INIT_COMPONENT_EXPORT(cd_pin_init);
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//INIT_APP_EXPORT(stm32_sdcard_hotplug_init);
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@ -0,0 +1 @@ |
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Subproject commit 679392a4b6beb09dd3e2febe03c2aabc3f298412 |
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