This example shows how to use Pulse Width Modulation (PWM) functionality of a module
The example is developed on the basis of standard firmware. The added code is in the comment range of /* User Code */ and /* End User Code */.
Basically, these are the parameters you need to change：
-
pwm_ping.frequency
Frequency range is 50KHZ ~ 500KHZ
Example: Changing frequency to 500KHZ
pwm_ping.frequency = 500000; //in hertz -
pwm_ping.dutycycle
Duty cycle range is 0% ~ 100%
Example: Changing the duty cycle to 25%
pwm_ping.dutycycle = 25;
Once the firmware is running, the user can measure the actual frequency and duty cycle. This can be done by connecting the probe of an oscilloscope to pin #2 of RAK811 module.