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TMS320F28062: 如何读取 485 绝对值编码器

Part Number: TMS320F28062

  485 绝对值编码器 怎样读取比较好?    疑问1: 如果在foc 时读取 ,如果遇到干扰,可能需要几次读取,影响了foc 的运行。  疑问2 : 如果一直中断读取 ,占用cpu 资源。    485 绝对值编码器 一般怎么读取的?