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modbus.c question about force_sw

 
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evsource



Joined: 21 Nov 2006
Posts: 129

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modbus.c question about force_sw
PostPosted: Wed Jan 09, 2008 11:15 pm     Reply with quote
I'm curious why in modbus.c, the #use rs232 statement has "force_sw" in it. It seems like if there is a UART, it should be used, shouldn't it?

Code:
#use rs232(baud=MODBUS_SERIAL_BAUD, xmit=MODBUS_SERIAL_TX_PIN, rcv=MODBUS_SERIAL_RX_PIN, parity=N, force_sw, stream=MODBUS_SERIAL)


Please share any insight.

Thanks!
drh



Joined: 12 Jul 2004
Posts: 192
Location: Hemet, California USA

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PostPosted: Thu Jan 10, 2008 9:18 am     Reply with quote
Does the hardware UART have a parity bit built in?
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David
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