Posted on February 25, 2013 at 20:16Big THANK YOU! It was the RCC_APB2Periph_AFIO that solved my issue! You saved me alot of time.

Posted on February 25, 2013 at 12:45I have almost the same problem: I have a flowmeter that makes pulses that I want to count. The frequency is variable between 0 and 20kHz. During design I can control the flow. The board is a keil MBCSTM32 Board. T...