feat: 更新ESP32Servo库

arduino-cli/libraries/ESP32Servo/examples/PWMExample/PWMExample.ino

@@ -0,0 +1,36 @@
+#include <ESP32Servo.h>
+int APin = 13;
+ESP32PWM pwm;
+int freq = 1000;
+void setup() {
+	// Allow allocation of all timers
+	ESP32PWM::allocateTimer(0);
+	ESP32PWM::allocateTimer(1);
+	ESP32PWM::allocateTimer(2);
+	ESP32PWM::allocateTimer(3);
+	Serial.begin(115200);
+	pwm.attachPin(APin, freq, 10); // 1KHz 10 bits
+
+}
+void loop() {
+
+	// fade the LED on thisPin from off to brightest:
+	for (float brightness = 0; brightness <= 0.5; brightness += 0.001) {
+		// Write a unit vector value from 0.0 to 1.0
+		pwm.writeScaled(brightness);
+		delay(2);
+	}
+	//delay(1000);
+	// fade the LED on thisPin from brithstest to off:
+	for (float brightness = 0.5; brightness >= 0; brightness -= 0.001) {
+		freq += 10;
+		// Adjust the frequency on the fly with a specific brightness
+		// Frequency is in herts and duty cycle is a unit vector 0.0 to 1.0
+		pwm.adjustFrequency(freq, brightness); // update the time base of the PWM
+		delay(2);
+	}
+	// pause between LEDs:
+	delay(1000);
+	freq = 1000;
+	pwm.adjustFrequency(freq, 0.0);    // reset the time base
+}