你能提供esp32-cam和stm32h7串口通信六轮小车,具有无线传输监控画面的硬件连接和相关代码吗
时间: 2023-06-25 14:07:29 浏览: 202
当然可以。下面是具体的硬件连接和代码实现:
硬件连接:
1. ESP32-CAM与STM32H7串口连接:
ESP32-CAM的UART0引脚RX和TX分别连接到STM32H7的UART2的TX和RX引脚。
2. 无线传输监控画面:
ESP32-CAM通过WiFi模块实现画面传输,可以使用ESP32-CAM板载的WiFi模块或者外接ESP8266模块。具体的连接方式可以参考ESP32-CAM的官方文档。
3. 六轮小车连接:
六轮小车的电机驱动模块需要连接到STM32H7的PWM输出引脚,用来控制六个电机的转速。此外,还需要连接六个编码器的输出信号到STM32H7的外部中断输入引脚,用来获取六个电机的转动信息。
代码实现:
1. ESP32-CAM代码:
在ESP32-CAM上运行一个简单的Web服务器,并将摄像头采集到的画面通过WiFi传输到客户端。下面是一个简单的代码示例:
```c
#include "esp_camera.h"
#include <WiFi.h>
const char* ssid = "your_SSID";
const char* password = "your_PASSWORD";
WiFiServer server(80);
void setup() {
Serial.begin(115200);
WiFi.begin(ssid, password);
while (WiFi.status() != WL_CONNECTED) {
delay(1000);
Serial.println("Connecting to WiFi...");
}
Serial.println("Connected to WiFi");
server.begin();
Serial.println("Server started");
}
void loop() {
WiFiClient client = server.available();
if (client) {
Serial.println("New client");
client.flush();
camera_fb_t* fb = esp_camera_fb_get();
if (fb) {
uint8_t* buf = fb->buf;
size_t len = fb->len;
client.println("HTTP/1.1 200 OK");
client.println("Content-Type: multipart/x-mixed-replace; boundary=frame");
client.println();
while (client.connected()) {
client.write("--frame\r\n");
client.write("Content-Type: image/jpeg\r\n");
client.write("Content-Length: " + String(len) + "\r\n");
client.write("\r\n");
client.write(buf, len);
client.write("\r\n");
}
esp_camera_fb_return(fb);
} else {
client.println("HTTP/1.1 500 Internal Server Error");
}
client.stop();
Serial.println("Client disconnected");
}
}
```
2. STM32H7代码:
在STM32H7上运行一个简单的控制程序,通过串口接收来自客户端的指令,并控制六轮小车的运动。下面是一个简单的代码示例:
```c
#include <SoftwareSerial.h>
#include <Encoder.h>
#define LEFT_MOTOR_PWM_PIN 10
#define LEFT_MOTOR_ENCODER_PIN 2
#define RIGHT_MOTOR_PWM_PIN 11
#define RIGHT_MOTOR_ENCODER_PIN 3
#define FRONT_MOTOR_PWM_PIN 12
#define FRONT_MOTOR_ENCODER_PIN 4
#define REAR_MOTOR_PWM_PIN 13
#define REAR_MOTOR_ENCODER_PIN 5
#define MIDDLE_MOTOR_PWM_PIN 14
#define MIDDLE_MOTOR_ENCODER_PIN 6
#define BACK_MOTOR_PWM_PIN 15
#define BACK_MOTOR_ENCODER_PIN 7
#define FORWARD 1
#define BACKWARD -1
#define LEFT -1
#define RIGHT 1
Encoder leftEncoder(LEFT_MOTOR_ENCODER_PIN);
Encoder rightEncoder(RIGHT_MOTOR_ENCODER_PIN);
Encoder frontEncoder(FRONT_MOTOR_ENCODER_PIN);
Encoder rearEncoder(REAR_MOTOR_ENCODER_PIN);
Encoder middleEncoder(MIDDLE_MOTOR_ENCODER_PIN);
Encoder backEncoder(BACK_MOTOR_ENCODER_PIN);
SoftwareSerial espSerial(2, 3); // RX, TX
String command;
void setup() {
Serial.begin(115200);
espSerial.begin(115200);
pinMode(LEFT_MOTOR_PWM_PIN, OUTPUT);
pinMode(RIGHT_MOTOR_PWM_PIN, OUTPUT);
pinMode(FRONT_MOTOR_PWM_PIN, OUTPUT);
pinMode(REAR_MOTOR_PWM_PIN, OUTPUT);
pinMode(MIDDLE_MOTOR_PWM_PIN, OUTPUT);
pinMode(BACK_MOTOR_PWM_PIN, OUTPUT);
}
void loop() {
if (espSerial.available()) {
command = espSerial.readStringUntil('\n');
if (command == "forward") {
move(FORWARD, FORWARD, FORWARD, FORWARD, FORWARD, FORWARD);
} else if (command == "backward") {
move(BACKWARD, BACKWARD, BACKWARD, BACKWARD, BACKWARD, BACKWARD);
} else if (command == "left") {
turn(LEFT, LEFT, LEFT, RIGHT, RIGHT, RIGHT);
} else if (command == "right") {
turn(RIGHT, RIGHT, RIGHT, LEFT, LEFT, LEFT);
} else if (command == "stop") {
stop();
}
}
}
void move(int leftSpeed, int rightSpeed, int frontSpeed, int rearSpeed, int middleSpeed, int backSpeed) {
analogWrite(LEFT_MOTOR_PWM_PIN, leftSpeed);
analogWrite(RIGHT_MOTOR_PWM_PIN, rightSpeed);
analogWrite(FRONT_MOTOR_PWM_PIN, frontSpeed);
analogWrite(REAR_MOTOR_PWM_PIN, rearSpeed);
analogWrite(MIDDLE_MOTOR_PWM_PIN, middleSpeed);
analogWrite(BACK_MOTOR_PWM_PIN, backSpeed);
}
void turn(int leftSpeed, int rightSpeed, int frontSpeed, int rearSpeed, int middleSpeed, int backSpeed) {
analogWrite(LEFT_MOTOR_PWM_PIN, leftSpeed);
analogWrite(RIGHT_MOTOR_PWM_PIN, rightSpeed);
analogWrite(FRONT_MOTOR_PWM_PIN, frontSpeed);
analogWrite(REAR_MOTOR_PWM_PIN, rearSpeed);
analogWrite(MIDDLE_MOTOR_PWM_PIN, middleSpeed);
analogWrite(BACK_MOTOR_PWM_PIN, backSpeed);
}
void stop() {
analogWrite(LEFT_MOTOR_PWM_PIN, 0);
analogWrite(RIGHT_MOTOR_PWM_PIN, 0);
analogWrite(FRONT_MOTOR_PWM_PIN, 0);
analogWrite(REAR_MOTOR_PWM_PIN, 0);
analogWrite(MIDDLE_MOTOR_PWM_PIN, 0);
analogWrite(BACK_MOTOR_PWM_PIN, 0);
}
```
以上代码仅供参考,具体实现需要根据实际情况进行调整。
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