arduino-esp32风扇风速用数组进行三档调节例程参考

很高兴能为您解答。关于您的问题，以下是Arduino-ESP32风扇风速用数组进行三档调节的示例代码，仅供参考：

#include <ESP32PWM.h>

#define FAN_PIN 2
#define PWM_CHANNEL 0
#define PWM_FREQUENCY 25000
#define PWM_RESOLUTION 8 // Change this value to adjust the number of bits used
#define PWM_MAX_DUTY_CYCLE 255

int fanSpeed = 0;
const int LOW_SPEED = 50; // lower threshold for medium speed
const int MED_SPEED = 150; // lower threshold for high speed
const int HIGH_SPEED = 255; // upper threshold for high speed
int speedMap[] = {LOW_SPEED, MED_SPEED, HIGH_SPEED};

void setup() {
Serial.begin(115200);

// Enable PWM on FAN_PIN
ledcSetup(PWM_CHANNEL, PWM_FREQUENCY, PWM_RESOLUTION);
ledcAttachPin(FAN_PIN, PWM_CHANNEL);
}

void loop() {
// Read sensor data and adjust fan speed accordingly
// Example code assumes that sensor data is stored in a variable called sensorValue
if(sensorValue > 30) {
setFanSpeed(2); // High speed
} else if(sensorValue > 20) {
setFanSpeed(1); // Medium speed
} else {
setFanSpeed(0); // Low speed
}
}

void setFanSpeed(int speed) {
// Map desired speed setting to PWM duty cycle value
fanSpeed = speedMap[speed];

// Set PWM duty cycle
ledcWrite(PWM_CHANNEL, fanSpeed);
}

希望能够帮到您！