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rs232 prints rubish
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gaugeguy



Joined: 05 Apr 2011
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PostPosted: Tue Sep 16, 2025 1:17 pm     Reply with quote
That processor uses PPS (peripheral pin select). Please see the sticky on how to use #pin_select
scanan



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PostPosted: Wed Sep 17, 2025 12:50 am     Reply with quote
gaugeguy wrote:
That processor uses PPS (peripheral pin select). Please see the sticky on how to use #pin_select


By using
#pin_select U1TX=PIN_C6
#pin_select U1RX=PIN_C7
problem solved

many thanks
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Ttelmah



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PostPosted: Thu Sep 18, 2025 10:13 am     Reply with quote
A a comment, this line is wrong:

setup_spi(SPI_SS_DISABLED);

This turns off SPI slave select. It does not disable the SPI
allenhuffman



Joined: 17 Jun 2019
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PostPosted: Wed Sep 24, 2025 10:45 am     Reply with quote
I ran into corrupt RS232 output via the ICD debugger on one board which was related to one of the timers. Disabling the timer made the output work.
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jeremiah



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PostPosted: Thu Sep 25, 2025 7:56 am     Reply with quote
allenhuffman wrote:
I ran into corrupt RS232 output via the ICD debugger on one board which was related to one of the timers. Disabling the timer made the output work.


That's probably because the ICD serial is a software uart, so you need to add the option "DISABLE_INTS" to your #use rs232
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