配置缓冲区长度和超时阈值：在结构体uart_intr_config_t中输入阈值并调用uart_intr_config()启用中断： uart_enable_tx_intr()和uart_enable_rx_intr()禁用中断： uart_disable_tx_intr()或 uart_disable_rx_intr()3.7.4.3 模式检测 在检测到重复接收/发送同一字符的模式时触发中断。使用中断的步骤：配置并...
1. `uart_config_t`结构体和设置参数函数`uart_param_config()` 2. 专用函数设置参数 3. 设置通信管脚`uart_set_pin()` 4. 安装驱动程序`uart_driver_install()` 5. 运行UART通信 `uart_write_bytes()`和`uart_read_bytes()`...
要使用这些中断,首先通过uart_intr_config_t结构并通过调用uart_intr_config()来配置缓冲区长度和超时的相应阈值。然后通过uart_enable_rx_intr()和uart_enable_tx_intr()启用中断。通过uart_disable_rx_intr()或uart_disable_tx_intr()禁用中断。 模式检测 - 在检测到发送相同字符的’pattern’次数时触发的中断。
uart_param_config(UART_NUM_0, &uart_config); uart_set_pin(UART_NUM_0, ECHO_TEST_TXD, ECHO_TEST_RXD, ECHO_TEST_RTS, ECHO_TEST_CTS); uart_driver_install(UART_NUM_0, BUF_SIZE * 2, 0, 0, NULL, 0); } static void echo_task() { uint8_t *data = (uint8_t *) malloc(B...
esp_err_t uart_driver_install(uart_port_t uart_num, int rx_buffer_size, int tx_buffer_size, int queue_size, QueueHandle_t *uart_queue, int intr_alloc_flags)uart_num ---串⼝号 rx_buffer_size ---接收缓存⼤⼩ tx_buffer_size ---发送缓存⼤⼩ ...
void uart_init(void) { uart_isr_handle_t handle; uart_isr_register(UART_NUM_0, uart_irq_handler, NULL, ESP_INTR_FLAG_LOWMED | ESP_INTR_FLAG_IRAM, &handle); uart_enable_rx_intr(UART_NUM_0); } 该函数主要执行两个步骤: 串口中断服务函数的注册 ...
{ uart_config_t uart_config = { .baud_rate = 115200, .data_bits = UART_DATA_8_BITS, .parity = UART_PARITY_DISABLE, .stop_bits = UART_STOP_BITS_1, .flow_ctrl = UART_HW_FLOWCTRL_DISABLE }; uart_param_config(EX_UART_NUM, &uart_config); uart_set_pin(EX_UART_NUM, UART_PIN_...
1. 初始化UART接口：首先，您需要初始化UART接口以使用RS485模式。您可以使用`uart_config_t`结构体来...
在examples/peripherals/uart中也可以参考官方的各种串口例程。 2.1、安装uart驱动 代码语言:javascript 复制 esp_err_tuart_driver_install(uart_port_t uart_num,int rx_buffer_size,int tx_buffer_size,int queue_size,QueueHandle_t*uart_queue,int intr_alloc_flags); ...
1 void uart_evt_test() 2 { 3 int uart_num = UART_NUM_0; 4 uart_config_t uart_config = { 5 .baud_rate = 115200, 6 .data_bits = UART_DATA_8_BITS, 7 .parity = UART_PARITY_DISABLE, 8 .stop_bits = UART_STOP_BITS_1, 9 .flow_ctrl = UART_HW_FLOWCTRL_DISABLE, 10 .rx_fl...