AZ-Delivery ESP-32 Dev Kit C V4 Bedienungsanleitung Seite 30

PWM - Pulsweitenmodulation
#define LEDC_CHANNEL_0 0
#define LEDC_TIMER_13_BIT 13
#define LEDC_BASE_FREQ 5000
#define LED_Pin 2
int brightness = 0;
int fadeAmount = 5;
void ledcAnalogWrite(uint8_t
{
uint32_t duty = (8191 / valueMax) * min(value, valueMax);
ledcWrite(channel, duty);
}
void setup() {
ledcSetup(LEDC_CHANNEL_0, LEDC_BASE_FREQ, LEDC_TIMER_13_BIT);
ledcAttachPin(LED_Pin, LEDC_CHANNEL_0);
}
void loop() {
ledcAnalogWrite(LEDC_CHANNEL_0, brightness);
brightness = brightness + fadeAmount;
if (brightness <= 0 || brightness >= 255) {
fadeAmount = -fadeAmount;
}
delay(30);
}
channel, uint32_t
- 30 -
value, uint32_t valueMax = 255)