typedefenum{UART_BAUDRATE_300 =0, UART_BAUDRATE_600, UART_BAUDRATE_1200, UART_...
int uart_register_driver(struct uart_driver *drv); 返回值:0,成功;负值,失败。 retval = tty_register_driver(normal); error = register_chrdev_region(dev, driver->num, driver->name);//也是通过字符设备驱动框架注册d = tty_register_device(driver, i,NULL); tty_register_device_attr(driver, inde...
参数顺序： Tx,Rx,RTS,CTS。保持不变的参数，使用宏： UART_PIN_NO_CHANGE使用示例：// 设置TX=IO4, RX=IO5, RTS=IO18, CTS=IO19ESP_ERROR_CHECK(uart_set_pin(UART_NUM_2, 4, 5, 18, 19));4. 安装驱动程序uart_driver_install()参数：Tx 环形缓冲区的大小Rx 环形缓冲区的大小事件队列句柄和大...
char *out_buffer = malloc(length + 3);out_buffer = out_data;out_buffer[length] = '\0'; // add "End of chain" character/// Using direct TX macro (works like a charm…!)/* while (*out_buffer) {// Send character on UARTIOWR_ALTERA_AVALON_UART_TXDATA(RFS...
需要发送的数据指针,需要使用dma_malloc申请,或者全局变量 size 需要发送的数据长度 返回值 等于发送的长度tx_size:ok,<0:error 1.4.1.7.uart_wait_tx_idle 等待串口发送完成,不允许在中断函数使用 原型: s32uart_wait_tx_idle(uart_devuart_num,u32timeout_ms); ...
(uart_num, UART_MODE_RS485_HALF_DUPLEX)); // 设置UART TOUT功能的读取超时 ESP_ERROR_CHECK(uart_set_rx_timeout(uart_num, ECHO_READ_TOUT)); // 申请动态内存 uint8_t* data = (uint8_t*) malloc(BUF_SIZE); ESP_LOGI(TAG, "UART start recieve loop.\r\n"); echo_send(uart_num, "...
/**< Invalid user input parameter. */HAL_UART_STATUS_ERROR_BUSY=-3,/**< UART port is currently in use. */HAL_UART_STATUS_ERROR_UNINITIALIZED=-2,/**< UART port has not been initialized. */HAL_UART_STATUS_ERROR=-1,/**< UART driver detected a common error. */HAL_UART_STATUS_OK...
Describe the bug sample.boards.stm32.uart.circular_dma build failure for below platforms in NXP imx95_evk/mimx9596/m7 frdm_mcxc444/mcxc444 frdm_mcxw71/mcxw716c frdm_mcxc242/mcxc242 frdm_ke15z/mke15z7 frdm_kw41z/mkw41z4 Please also mentio...
(uart_param_config(ECHO_UART_PORT_NUM, &uart_config)); ESP_ERROR_CHECK(uart_set_pin(ECHO_UART_PORT_NUM, ECHO_TEST_TXD, ECHO_TEST_RXD, ECHO_TEST_RTS, ECHO_TEST_CTS)); // Configure a temporary buffer for the incoming data uint8_t *data = (uint8_t *) malloc(BUF_SIZE); // ...
uint8_t *dtmp = malloc(RD_BUF_SIZE); bzero(dtmp, RD_BUF_SIZE); switch (event->type) { //Event of UART receving data /*We'd better handler data event fast, there would be much more data events than other types of events. If we take too much time on data event, the queue mi...