/*!
    \file    readme.txt
    \brief   description of TIMER2 single pulse demo

    \version 2025-08-01, V1.0.0, firmware for gd32c2x1
*/

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  This example is based on the GD32C231C-EVAL-V1.0 board, it shows how
to configure the TIMER2 peripheral in single pulse mode.

  The external signal is connected to TIMER2 CH0 pin (PB4) and the falling edge is used
as active edge.

  The single pulse signal is output on TIMER2 CH1 pin (PB3).
  The TIMER2CLK frequency is set to CK_AHB (48MHz), the prescaler is 4800, so the TIMER2
counter clock is 10KHz.

  single pulse value = (TIMER2_Period - TIMER2_Pulse) / TIMER2 counter clock
                     = (10000 - 50000) / 10KHz = 0.5s.

  Connect the TIMER2 CH0 pin (PB4)to KEY,When KEY is pressed,a single pulse is generated.
