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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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此样例演示了TIM1的DMA Burst传输，配置TIM1为PWM模式，更新中断触发DMA传输请求。每次
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产生更新中断时将TIM1DataBuff[]中的值按顺序写入RCR和CCR1寄存器，改变PWM脉冲的占空
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比和该占空比的脉冲数量。
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Function descriptions:
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This sample demonstrates the DMA Burst transfer of TIM1. It configures TIM1
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in PWM mode and triggers DMA transfer requests on update interrupt. Each time
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an update interrupt occurs, the values in TIM1DataBuff[] are sequentially
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written to RCR and CCR1 registers, changing the duty cycle and the number
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of pulses for the PWM waveform.
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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，并运行
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2. 使用逻辑分析仪观察引脚PA8的波形
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3. 可以观察到2个10%占空比的脉冲，2个20%，3个30%，4个40%...以此类推直到稳定在90%
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Example execution steps:
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1.Compile and download the program to the MCU, and then run it.
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2.Use a logic analyzer to observe the waveform on pin PA8.
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3.You will observe a sequence of pulses with increasing duty cycle: 2 pulses
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with 10% duty cycle, 2 pulses with 20% duty cycle, 3 pulses with 30% duty
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cycle, 4 pulses with 40% duty cycle, and so on until it stabilizes at 90%
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duty cycle.
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================================================================================
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注意事项：
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Notes:
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================================================================================ |