/*!
    \file    readme.txt
    \brief   description of SHRTIMER0 external event filtering example

    \version 2025-08-08, V1.3.0, firmware for GD32E51x
*/

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  This example is based on the GD32E517Z-EVAL-V1.0 board. This example shows how to
configure external event filtering. The ST0_CH0_O channel (PA8) and ST0_CH1_O channel
(PA9) output two independent PWM waveforms.
  The ST0_CH0_O channel set at Slave_TIMER0 compare 3 event and reset at compare 0 event.
  The ST0_CH1_O channel set at external event and reset at compare 3 event.
  The Slave_TIMER0 work in external event blanking mode and the blank is from counter 
reset to SHRTIMER_STxCMP0V. When the the falling edge of external event 5 hanppen in the blank, 
it will be ignored.
  The waveforms on pins of PA8 and PA9 can be observed by oscilloscope.
