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老师，v2版本的超声波雷达测试代码，返回结果一直是0，帮我看一下什么原因呢。 e6a8ea97-1931-40dd-a107-995b3ba34cf1-image.png 9d70c696-6eef-4ff2-84e2-d79c76cb91d4-img_v3_02ng_f070ce24-3c47-4610-ac45-afec1991240g.jpg
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