StickC PWM 脉冲宽度调制

#include <M5StickC.h>
 
void setup() {
  M5.begin();
  ledcSetup(8, 1,10);  
          // Set the frequency of LEDC channel 8 to 1 and the resolution to
          // 10 bits, that is, the duty cycle can be selected from 0 to
          // 1023. 设置LEDC通道8频率为1，分辨率为10位，即占空比可选0~1023
  ledcAttachPin(32,8);
          // Set LEDC channel 8 to output on IO32.  设置LEDC通道8在IO32上输出
}
 
void loop() {}

#include <M5StickC.h>
int freq = 1800;
int channel = 0;
int resolution_bits = 8;
int buzzer = 2;
 
void setup() {
  M5.begin();
  ledcSetup(channel, freq, resolution_bits);
  ledcAttachPin(buzzer, channel);
}
void loop() {
    ledcWrite(channel, 128);
    delay(1000);
    ledcWrite(channel, 0);
    delay(1000);
}