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Invisible Guest
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12c509 uart baudrate 115k...need some magic :) |
Posted: Mon Jan 05, 2004 6:52 am |
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hi,
I know with 12c509 @4Mhz not possible but I had
seen 12c509 working at that speed.
There is some trick to push 12c509 to 115 baudrate?
thanks in advance
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PCM programmer
Joined: 06 Sep 2003 Posts: 21708
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Posted: Mon Jan 05, 2004 12:40 pm |
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That chip has no UART. It has to be done in software.
The built-in CCS libraries don't support such a high baudrate.
See this Piclist page, which has links to sample code
for doing high baudrates with a 4 MHz crystal.
The code is in assembly language.
http://www.piclist.com/techref/microchip/rs232.htm |
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Invisible Guest
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re |
Posted: Wed Jan 07, 2004 5:26 am |
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hi,
thanks for reply, yes, I know software usart is used,
I preffer faster chips but "someone" decided 12c50x without asking R&D.
Thanks for the link, I think I have there the info I needed,
best regards
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