voiduart_comm_init(void){/* Configure parameters of an UART driver, * communication pins and install the driver */uart_config_t uart_config={.baud_rate=115200,.data_bits=UART_DATA_8_BITS,.parity=UART_PARITY_DIS
中断驱动uart_driver_install函数参数说明如下: esp_err_tuart_driver_install(uart_port_tuart_num,intrx_buffer_size,inttx_buffer_size,intqueue_size, QueueHandle_t *uart_queue,intintr_alloc_flags);// 参数 :uart_num:串口编号 可查看uart.h,进行选择// rx_buffer_size:uart接收数组大小// tx_buffer...
1、注册uart_driver; 2、注册platform_driver,也就是uart_add_one_port(); 具体请细看下面的源码分析: 2.1 uart_driver的注册: 在s3c2440 平台,它是这样来注册串口驱动的,分配一个struct uart_driver 简单填充,并调用uart_register_driver 注册到内核中去。 static struct uart_driver s3c24xx_uart_drv = { ...
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...
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小分配中断的标志示例：// Setup UART buffered IO with event queueconst int uart_buffer_size = (1024 * 2);QueueHandle_t uart_queue;// Install UART driver using an event queue hereESP_ERROR_CHECK...
UART_STOP_BITS_1, 9 .flow_ctrl = UART_HW_FLOWCTRL_DISABLE, 10 .rx_flow_ctrl_thresh = 122, 11 }; 12 //Set UART parameters 13 uart_param_config(uart_num, &uart_config); 14 //Set UART log level 15 esp_log_level_set(TAG, ESP_LOG_INFO); 16 //Install UART driver, and get ...
= NULL) { xTimerStart(Time_3000_Handle, 0); //开启定时器 } } void UART0_Task_Function(void *arg) { int intr_alloc_flags = 0; #if CONFIG_UART_ISR_IN_IRAM intr_alloc_flags = ESP_INTR_FLAG_IRAM; #endif ESP_ERROR_CHECK(uart_driver_install(UART_NUM_0, 1024, 0, 0, NULL, ...
.stop_bits = UART_STOP_BITS_1, .flow_ctrl = UART_HW_FLOWCTRL_DISABLE, .source_clk = UART_SCLK_APB, };// We won't use a buffer for sending data.uart_driver_install(UART_NUM_1, RX_BUF_SIZE *2,0,0,NULL,0); uart_param_config(UART_NUM_1, &uart_config); ...
一旦通信引脚被设置,通过调用uart_driver_install( )安装驱动和指定接下来的参数: (1)TX缓冲区的大小 (2)RX缓冲区的大小 (3)事件队列句柄和大小 (4)分配中断标志 该函数将为UART驱动程序分配所需的内部资源。 一旦步骤已经完成,你可以连接到外部串口设备和检测通信。
either express or implied.*/#include"freertos/FreeRTOS.h"#include"freertos/task.h"#include"esp_system.h"#include"esp_log.h"#include"driver/uart.h"#include"string.h"#include"driver/gpio.h"#include"Datadef.h"#define proccrc8(u8CRC, u8Data) (u8CRC8Table[u8CRC^u8Data])constuint8u8CRC...