Hello,
I want to generate a 50Hz signal with a 50% duty cycle with hardware PWM (I'm using pin 18). As I read that is the only pin that supports hardware pwm?
I want to use python as the programming language, and I imported the wiringpi library (not the one that comes with Raspbian btw). But how do I calculate the frequency and the duty cycle? Could someone explain or give me an example? I saw this link https://raspberrypi.stackexchange.com/q ... -frequency but I don't understand it that well.
Thanks in advance
FYI: I'm using a Raspberry Pi Zero
Re: wiringpi PWM python
No pin 12 (GPIO18) is not the only pin supporting hardware PWM. There are two hardware PWM channels. Channel 0 may be used on GPIO 12 and 18. Channel 1 may be used on GPIO 13 and 19.
Re: wiringpi PWM python
Can you show me an example for a 50Hz frequency and a 50% duty cycle. Or at least how I can calculate everything and set the parameters to do so.joan wrote:No pin 12 (GPIO18) is not the only pin supporting hardware PWM. There are two hardware PWM channels. Channel 0 may be used on GPIO 12 and 18. Channel 1 may be used on GPIO 13 and 19.
Re: wiringpi PWM python
I don't use the module so all I could do is interpret the same documentation.GianniDPC wrote:Can you show me an example for a 50Hz frequency and a 50% duty cycle. Or at least how I can calculate everything and set the parameters to do so.joan wrote:No pin 12 (GPIO18) is not the only pin supporting hardware PWM. There are two hardware PWM channels. Channel 0 may be used on GPIO 12 and 18. Channel 1 may be used on GPIO 13 and 19.