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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DAC的TIM触发功能，每隔1s，DAC的通道1输出数组中的数据。

Function descriptions:
This example demonstrates the TIM triggering function of DAC, channel 1 of DAC
outputs data from the array every 1 second.
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测试环境：
测试用板：PY32F403_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: PY32F403_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. 编译并下载程序；
2. PA4每隔1s输出0V,0.825V,1.65V,2.475V.3.3V；

Example execution steps:
1. Compile and download the program;
2. PA4 outputs 0V, 0.825V, 1.65V, 2.475V.3.3V every 1s
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注意事项：
请注意部分型号不支持DAC，具体型号参考数据手册

Notes:
Please note that some models do not support DAC. Please refer to the data manual 
for specific models

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