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                                样例使用说明
                             Sample Description
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功能描述：
此样例演示了使用TIM1输出三路频率为10Hz占空比分别为25%、50%、75%的PWM波形以及他们
的互补信号。

Function descriptions:
This sample demonstrates the generation of three PWM waveforms with 
frequencies of 10Hz and duty cycles of 25%, 50%, and 75% using TIM1. 
It also generates their complementary signals.
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测试环境：
测试用板：PY32T090_STK
MDK版本： 5.28
IAR版本： 9.20
GCC版本：GNU Arm Embedded Toolchain 10.3-2021.10

Test environment:
Test board: PY32T090_STK
MDK Version: 5.28
IAR Version: 9.20
GCC Version: GNU Arm Embedded Toolchain 10.3-2021.10
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使用步骤：
1. 编译下载程序到MCU，并运行
2. 使用逻辑分析仪观察引脚PB12/PB13/PC13/PC11/PC5/PC6的波形

Example execution steps:
1.Compile and download the program to the MCU, and then run it.
2.Use a logic analyzer to observe the waveforms on pins PB12/PB13/PC13/PC11/PC5/PC6
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注意事项：
PB12  -> CH1  占空比：25%
PC13  -> CH2  占空比：50%
PC5 -> CH3  占空比：75%
PB13  -> CH1N
PC11  -> CH2N
PC6  -> CH3N

Notes:
PB12-> CH1 Duty cycle: 25%
PC13-> CH2 Duty cycle: 50%
PC5  -> CH3 Duty cycle: 75%
PB13-> CH1N
PC11-> CH2N
PC6 -> CH3N
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