I have been trying to get a PWM output from PE9 by following some example online. However no PWM output at PE9 pin. The desires PWM frequency is 20kHz and duty cycle is 50%. Any suggestion what is the problem ?. Thanks.
Are you sure that PE9 is not used by anything else on the Disco board?
Check the User Manual and Schematics.
Can you toggle it using just a simple GPIO write?
A complex system that works is invariably found to have evolved from a simple system that worked. A complex system designed from scratch never works and cannot be patched up to make it work.
Are you sure that PE9 is not used by anything else on the Disco board?
Check the User Manual and Schematics.
Can you toggle it using just a simple GPIO write?
A complex system that works is invariably found to have evolved from a simple system that worked. A complex system designed from scratch never works and cannot be patched up to make it work.
I had checked the schematic, PE9 is free and it is not used for other things. As mentioned by KnarfB, i had set the pulse width to 100%. Hence i only see a straight line instead of a PWM signal. I did though to toggle using simple GPIO write but i need to vary the pulse width.
