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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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此样例是对高级定时器功能“六步PWM的产生”的演示，通过systick中断作为COM commutation
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事件的触发源，实现（无刷电机的）换向,下表是换向步骤，比如第一步中的CH1和CH3N为1，
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即设置打开这两个通道的PWM输出。
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Function descriptions:
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This sample demonstrates advanced timer function 'six-step PWM generation',
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systick interrupt as COM commutation event trigger source to achieve commutation
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(brushless motor).
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The following table shows the commutating steps. For example, CH1 and CH3N in
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the first step are set to 1, that mean the PWM output of these two channels is
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set to start
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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. 编译并下载程序；
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2. 用示波器或逻辑分析仪接以上六个通道，可监测到上述描述波形；
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Example execution steps:
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1. compile and download the program to MCU and run it;
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2. Connect the above six channels with an oscilloscope or logic analyzer,you can
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observed the above described waveform;
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================================================================================
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注意事项：
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PWM时序如下：
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第一步 第二步 第三步 第四步 第五步 第六步
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CH1 1 0 0 0 0 1
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CH1N 0 0 1 1 0 0
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CH2 0 0 0 1 1 0
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CH2N 1 1 0 0 0 0
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CH3 0 1 1 0 0 0
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CH3N 0 0 0 0 1 1
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CH1 (PA08) |||||||_________________________________||||||||||||||_________________________________|||||||
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CH1N (PB13) _______________||||||||||||||||_______________________________||||||||||||||||________________
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CH2 (PA09) _______________________||||||||||||||||_______________________________||||||||||||||||________
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CH2N (PB14) |||||||||||||||________________________________|||||||||||||||________________________________
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CH3 (PA10) _______||||||||||||||||_______________________________||||||||||||||||________________________
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CH3N (PB15) ________________________________|||||||||||||||________________________________|||||||||||||||
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Notes:
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The PWM timing is as follows:
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Step 1 Step 2 Step 3 Step 4 Step 5 Step 6
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CH1 1 0 0 0 0 1
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CH1N 0 0 1 1 0 0
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CH2 0 0 0 1 1 0
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CH2N 1 1 0 0 0 0
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CH3 0 1 1 0 0 0
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CH3N 0 0 0 0 1 1
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CH1 (PA08) |||||||_________________________________||||||||||||||_________________________________|||||||
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CH1N (PB13) _______________||||||||||||||||_______________________________||||||||||||||||________________
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CH2 (PA09) _______________________||||||||||||||||_______________________________||||||||||||||||________
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CH2N (PB14) |||||||||||||||________________________________|||||||||||||||________________________________
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CH3 (PA10) _______||||||||||||||||_______________________________||||||||||||||||________________________
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CH3N (PB15) ________________________________|||||||||||||||________________________________|||||||||||||||
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================================================================================ |