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Bit bashed UART
This thread was started in the Serial Forum by user rayabram on 11-5-2004 19:05
To add a posting to this thread, click on the message you wish to reply to. Your reply will be inserted at that point in the thread.
Topic Posted User
*Bit bashed UART
does anyone have some code for a bit bashed UART using a 89LCP932 ?
Reply to this post
11-5-2004 19:05
Views: 2817
rayabram
*RE: Bit bashed UART
It''s probably an obvious question, but why are you not using the inbuilt UART?

Whatever, assuming there''s a good reason, I think I can can find something and I''ll post it when I do.

Reply to this post
11-5-2004 19:10
Views: 2767
IonMan
*RE: Bit bashed UART
i am already using the inbuild UART, and require another one for relaying data to another host. I am using the uP for filtering of packets of data...
Reply to this post
11-5-2004 19:39
Views: 3045
rayabram
*RE: Bit bashed UART
Does the bit-bashed one UART need to receive also, or only send?
Reply to this post
11-5-2004 20:30
Views: 2770
IonMan
*RE: Bit bashed UART
I found this, which was actually written for the 84C21 - a subset of the 51. It should give you some ideas...

;==============================================================================
;
; Serial I/O routines for the 8421
;
; Neither serial input nor output are interrupt-driven. The baud rate is
; fixed at 2400 baud. As the serial routines are implemented entirely in
; software, a little care was needed in designing the serial protocol.
;
; 2400 baud corresponds to a bit time of 417 microseconds. At the clock
;
... more (see whole posting)
Reply to this post
11-5-2004 20:53
Views: 2852
IonMan
RE: Bit bashed UART
Maybe Philips application note AN446 can give you additional information about writing software uarts.

Use google to find the pdf of AN446 on the internet.

kind regards, Peter
Reply to this post
22-11-2004 10:28
Views: 2611
proodink
*RE: Bit bashed UART
You can find this app note on this site. Search for 446.
Reply to this post
22-11-2004 14:17
Views: 2612
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Tue Apr 20 19:53:16 CDT 2004
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