From: Harold Hallikainen <harold@mai.hallikainen.org>
To: Microcontroller discussion list - Public. <piclist@mit.edu>
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Date: Tue, 21 Jul 2020 20:38:02 -0700
Subject: Re: [PIC]: 18F47K42
Thread-Topic: [PIC]: 18F47K42
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If SOMETHING happens when you send a character to the UAST, I suspect it's
working, but the bit rate or bits per character is wrong (especially the
bit rate). Also, some chips allow you to invert the transmit data which
will also, of course, mess things up. Can you look at the pin on a logic
analyzer or scope? That way you can see what's going on.

Good luck!

Harold


>
>  All,
>
>  I am trying to get the EUSART1 on a
>  PIC18F47K42 in a 40 pin dip package
>  to operate.
>
>  This part has the Peripheral Pin Select.
>  functionality that allows you to remap
>  some peripheral input and outputs to more
>  convenient package pins for easier pcb
>  routing.
>
>  I have chosen to make USART1 input on
>  Pin C7 and output on pin C6.
>
>  I am using Mikro C for PIC and have used the.
>  USART library to do the USART setup, and am
>  using the EasyPIC 7 dev board for programming
>  and code development.
>
>  I have set the baud rate to 19200, set USART1
>  to be active, enabled the USART, transmit and
>  receive on, etc.
>
>  I either get nothing from the USART or
>  gibberish.
>
>  I have been through the code a dozen times
>  have tried various combinations of options
>  etc.
>
>  Does anyone have any experience or ideas
>  about why might this be happening?
>  Or suggestions of what to try?
>
>  Using Microchip C or MAPLB X with the Code
>  Configurator Ap is not possible.
>
>  I want to be able to use this processor
>  without having to rely on Mplab X with code
>  configurator.
>
>  Any insight or suggestions would be greatly
>  appreciated.
>
>  Thanks and Regards,
>
> Jim
>
>
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>


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