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Posted to commits@nuttx.apache.org by GitBox <gi...@apache.org> on 2021/05/09 12:31:00 UTC

[GitHub] [incubator-nuttx] ramangopalan opened a new pull request #3684: avr32dev1: USART1 RX: Reassign pin

ramangopalan opened a new pull request #3684:
URL: https://github.com/apache/incubator-nuttx/pull/3684


   ## Summary
   
   The USART1's RX pin seems to be assigned incorrectly. This patch
   assigns the right pin.
   
   From the AVR32UC3B manual, I present the following:
   
     1) Previously, the RX pin was assigned to PA17, function D. The
     manual [1] mentions that function D is only available for UC3Bx512
     devices (page - 7). The AVR32DEV1 however uses a UC3B0256
     microcontroller. Hence, invalid.
   
     2) The newly assigned pin PA24 (Function A, USART1 - RXD) is the
     right choice for I/O over USART1.
   
   ## Impact
   
   Not applicable.
   
   ## Testing
   
   I am almost certain that this pin assignment is correct. But I don't
   have an AVR32DEV1 with me yet.
   
   References:
   [1]: http://ww1.microchip.com/downloads/en/devicedoc/doc32059.pdf
   
   


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[GitHub] [incubator-nuttx] acassis merged pull request #3684: avr32dev1: USART1 RX: Reassign pin

Posted by GitBox <gi...@apache.org>.
acassis merged pull request #3684:
URL: https://github.com/apache/incubator-nuttx/pull/3684


   


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