Hi,
In order to adjust the sound pitch a magnetic buzzer I thought using a PWM could be the right choice.
Looking at the nrf5340dk device tree source I've found a pwmleds resource node, which relyes on the "pwm-leds" driver.
/ {
...
pwmleds {
compatible = "pwm-leds";
pwm_led1: pwm_led_1 {
pwms = <&pwm1 25>;
};
};
};
&pwm1 {
status = "okay";
ch0-pin = <25>;
};
In few minutes I managed to control the buzzer sound nicely.
Now, as the name suggests, I suppose the "pwm-leds" was originally conceived to adjust the brightness of a LED, making it to step from dark to max brightness.
Is it appropriate to use it for a buzzer ?
