PB_3mode_3ch_1IO2LED_BT1_BT2_M300:由svn1120修改，改为3模3通道，BT1与BT2共用一个GPIO，上传初版代码;
Review Request #5099
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Created Oct. 29, 2022 and updated — Latest diff uploaded
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luoyuxi
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YC1308
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| Reviewers
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jiangheng, luoyuxi
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由svn1120修改，改为3模3通道，BT1与BT2共用一个GPIO，上传初版代码;
