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How to use the serial‘s TXSTA RCSTA

 
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stefsun



Joined: 23 May 2007
Posts: 22

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How to use the serial‘s TXSTA RCSTA
PostPosted: Fri Nov 07, 2008 1:22 am     Reply with quote
How to use the serial’s TXSTA RCSTA ? How to set up TXSTA‘s TX9D to judge whether send the address or data ?

I don't find the sample about this for a long time.

Who can help me ? Thanks in advance.
PCM programmer



Joined: 06 Sep 2003
Posts: 21708

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PostPosted: Fri Nov 07, 2008 2:15 am     Reply with quote
Look at this CCS driver file:
Quote:
c:\program files\picc\drivers\rs485.c

Look at this routine in that file:
Code:
int1 rs485_send_message(int8 to, int8 len, int8* data)

Notice that the UART is configured for "long data" in the #use rs232()
statement. Notice that when they send the address, they "OR" the ID
with 0x100.

That function is called in these example files:
Quote:
c:\program files\picc\examples\ex_rs485.c
c:\program files\picc\examples\ex_rs232_485.c
c:\program files\picc\examples\ex_rfid.c 5/8/06
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