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    100s 的tina 定时器精度只能到10ms,现在需要用gpio来模拟nec协议的红外发送,大家有什么好的建议吗?

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    • W
      wyljkl LV 7 last edited by

      100s 的tina 定时器精度只能到10ms,现在需要用gpio来模拟nec协议的红外发送,IO口的翻转精度要求到us级别的,大家有什么好的建议吗?

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      • WhycanService
        WhycanService LV 8 @wyljkl last edited by

        @wyljkl tina有IR模块可以发送接收红外,配置mux直接写数据就行了,不需要io模拟

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        • W
          wyljkl LV 7 @WhycanService last edited by

          @whycanservice 100s芯片不支持红外发送,只有IR-RX,所以才想要去模拟

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          • WhycanService
            WhycanService LV 8 @wyljkl last edited by

            @wyljkl 建议可以外挂一个8051芯片进行通讯

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            • aozima
              aozima LV 7 last edited by aozima

              只需要模拟那个毫秒级的信号就行了吧,38K载波应该用PWM来实现。

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              • W
                wyljkl LV 7 @aozima last edited by

                @aozima pwm???nec红外协议里面不是有us级别的电平翻转吗?
                b0d495e5-8c3d-4150-ba07-5e08d0be4a77-image.png

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