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================================================================================
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样例使用说明
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Sample Description
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================================================================================
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功能描述：
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此样例实现了TIM1中的编码器计数功能，TI1(PA8)和TI2(PA9)作为编码器输入引脚，通过
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CNT寄存器可观察到计数器变化，通过uwDirection变量可观察到计数器的计数方向，通过
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打印数据也可观察计数方向和CNT寄存器计数值，打印数据Direction = 0为向上计数，
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Direction = 1为向下计数。
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Function descriptions:
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This sample demonstrates encoder count function of the TIM1,TI1(PA8) and
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TI2(PA9) configured as encoder input pins.The change of the counter can be
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observed through the CNT register, and the counting direction of the counter can
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be observed through the uwDirection variable.The counting Direction and CNT
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register can also be observed by printing data. The printed data Direction = 0
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indicates CounterMode:Up, and direction = 1 indicates CounterMode:down.
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================================================================================
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测试环境：
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测试用板：PY32F403_STK
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MDK版本： 5.28
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IAR版本： 9.20
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GCC版本：GNU Arm Embedded Toolchain 10.3-2021.10
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Test environment:
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Test board: PY32F403_STK
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MDK Version: 5.28
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IAR Version: 9.20
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GCC Version: GNU Arm Embedded Toolchain 10.3-2021.10
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================================================================================
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使用步骤：
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1. 编译下载程序到MCU，并通过debug模式运行；
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2. 在PA08和PA09上输入交替脉冲（PA08上升沿在前，PA09上升沿在后，具体请参考用户手册）；
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3. 可观察到CNT寄存器的值不断累加；
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4. 在PA08和PA09上输入交替脉冲（PA09上升沿在前，PA08上升沿在后，具体请参考用户手册）；
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5. 可观察到CNT寄存器的值不断减小；
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Example execution steps:
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1. compile and download the program to MCU and run it through debug mode;
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2. Input alternating pulses on PA08 and PA09 (PA08 rising edge in front, PA09
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rising edge in back, please refer to the user manual for details);
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3. It can be observed that the value of the CNT register increase continuously.
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4. Input alternating pulses on PA08 and PA09 (PA09 rising edge in front, PA08
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rising edge in back, please refer to the user manual for details);
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5. The value of the CNT register can be observed to decrease continuously;
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================================================================================
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注意事项：
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Notes:
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