onRequest handler and Serial.print

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i successful in getting nxt (using robotc) , arduino talk each other on i2c there problem hit did not expect. 

i found if included serial.print statements in onrequest handler data being sent nxt master "mangled".   i have confirmed saleae logic analyzer , can reproduce problem.

it appears others 'might' have had issue.  when searched forum there unanswered posts people having similar problems (for example http://arduino.cc/forum/index.php/topic,90516.0.html ).

is possible update wire.onrequest library documentation page warn people issue?  (or common knowledge , didn't know it?    :smiley-mr-green: )

thanks.

the onrequest handler (called from) isr (interrupt service routine). not recommended serial.prints inside in general, , in particular i2c because delay response possibly causing transaction time out.

you right better documented.


Arduino Forum > Using Arduino > Networking, Protocols, and Devices (Moderator: fabioc84) > onRequest handler and Serial.print


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