/*! \file readme.txt \brief description of the TIMER1 OC toggle demo */ /* Copyright (C) 2017 GigaDevice 2017-06-06, V1.0.0, firmware for GD32F3x0 */ This demo is based on the GD32350R-EVAL board, it shows how to configure the TIMER peripheral to generate the toggle signal. The TIMxCLK frequency is set to systemcoreclock , the prescaler is 42000(GD32F330) or 54000(GD32F350) so the TIMER1 counter clock is 2KHz. TIMER1 configuration: output compare toggle mode: CH1 update rate = TIMER1 counter clock / CH1CC = 2000/4000 = 0.5 Hz.