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"is_ready()" does not return "false" when D-OUT pin disconnected. #138

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HamidSaffari opened this issue Mar 29, 2019 · 3 comments
Open

"is_ready()" does not return "false" when D-OUT pin disconnected. #138

HamidSaffari opened this issue Mar 29, 2019 · 3 comments

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@HamidSaffari
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HamidSaffari commented Mar 29, 2019 •
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Hi.
"is_ready()" does not return "false" when D-OUT pin disconnected.
the reason is noise caused by High-Impedance of input pin.
the solution is to configure internal pull-up resistor.
so in begin():
pinMode(DOUT, INPUT);
should change to:
pinMode(DOUT, INPUT_PULLUP);
@HamidSaffari HamidSaffari changed the title "is_ready()" do not return "false" when D-OUT pin disconnected. "is_ready()" does not return "false" when D-OUT pin disconnected. Apr 5, 2019
@Flying-Bolt
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You are right! THX

@bogde
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bogde commented Apr 18, 2019

@HamidSaffari thanks for your feedback. what hardware did you use?

@Flying-Bolt
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an atmega32u4 bettle.

@HamidSaffari HamidSaffari mentioned this issue Mar 19, 2020
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@nielsole nielsole mentioned this issue Mar 18, 2021
Merged
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3 participants
@bogde @Flying-Bolt @HamidSaffari