esp_now_send返回是否发送出去,回调函数中展示是否成功发送给接收方。 #include <esp_now.h> #include <WiFi.h> // REPLACE WITH YOUR RECEIVER MAC Address uint8_t broadcastAddress[] = {0x8C, 0xCE, 0x4E, 0xA6, 0x73, 0x74}; // Structure example to send data // Must match the receiver ...
初始化ESP-NOW; 注册接收回调函数(OnDataRecv)。收到消息后将执行的功能。 在该回调函数内部,将消息保存到变量中以执行具有该信息的任何任务。 ESP-NOW与设备接收消息或发送消息时调用的回调函数一起使用(您可以确定消息是否已成功发送或失败)。 ESP-NOW有用的功能 以下是最基本的ESP-NOW功能的摘要: 函数名称和...
代码清单:main/hello_world_main.c /* Hello World Example This example code is in the Public Domain (or CC0 licensed, at your option.) Unless required by applicable law or agreed to in writing, this software is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND...
Left the line commented as an example of how to configure peripherals.The line below turns off ...
Now run: make flash This compiles both the ESP IDF libraries and the example main file locally (into thebuilddirectory) and then downloads this to the flash memory on the device over USB. It will take a little while, both to compile, and to flash. If you have a multi-core machine ...
*/ static void example_event_callback(esp_blufi_cb_event_t event, esp_blufi_cb_param_t *param) { /* actually, should post to blufi_task handle the procedure, * now, as a example, we do it more simply */ switch (event) { case ESP_BLUFI_EVENT_INIT_FINISH: BLUFI_INFO("BLUFI ...
这里复制RTU16example的main.c文件代码,编译成功,代码初步可用。这也说明安装的库eModbus可以使用。 根据引脚连接关系,定义RX, TX, RTS(视RS485调制解调模块选用)。 其他参考资料:https://getiot.tech/modbus 4、具体示例 使用RTS,使用RS485调制解调模块的接口引脚同常规芯片的DE和/RE逻辑相反。
You can now go to "File" -> "Examples" -> "ESP32 BLE Mouse" and select any of the examples to get started. Example /** * This example turns the ESP32 into a Bluetooth LE mouse that scrolls down every 2 seconds. */#include<BleMouse.h>BleMouse bleMouse;voidsetup(){Serial.begin(...
For example, the older ESP32-Lyra32T V2 and ESP32-LyraT boards were rectangular with built-in touch-based controls. The ESP32-LyraTD-MSC Audio-Mic HDK (hardware development kit) combines the ESP32-LyraTD-MSC (“audio-mic development board”) with a secondary “top” board. The kit ...
首先向昨天哪样,打开一个HelloWorld的example 这里对SDK做一个小改动,配置SPI为4MB 文件已经有所体现了 代码语言:javascript 代码运行次数:0 运行 AI代码解释 #include<stdio.h>#include"sdkconfig.h"#include"freertos/FreeRTOS.h"#include"freertos/task.h"#include"esp_system.h"#include"esp_spi_flash.h"...