Important changes to forums and questions
All forums and questions are now archived. To start a new conversation or read the latest updates go to forums.mbed.com.
10 years, 1 month ago.
Why is there a 32.79 kHz square wave output at PTC1?
I am using 20140530_k20dx128_kl25z_if_opensda.s19 firmware and with a blank program:
- include "mbed.h"
int main() { while(1) { } }
I am getting a 32.79 kHz 50% dutycycle squarewave output at PTC1. What is driving it? This waveform makes I2C inoperable.
If I reload the board with other firmware such as P&Emicro, the output goes away.
Question relating to:
Last updated: 30 Jun 2020
The FRDM-KL25Z is an ultra-low-cost development platform for Kinetis L Series KL1x (KL14/15) and KL2x (KL24/25) MCUs built on ARM® Cortex™-M0+ processor. Features include easy access to MCU I/O, battery-ready, …
1 Answer
