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Message

LPC2138 UART0/1 and modem control

2005-12-20 by czajniczek

Hi !

I'm about to build a system using LPC2138. It's going to be equipped
with RS232C and RS485 ports. As I need full RS232 implementation with
modem control lines, I will use UART1 for it, and UART0 for RS485 in
turn. 

Unfortunately I'd like to use serial ISP programming, which uses
UART0, and I don't like an idea of flashing through RS485.

After reviewing the manual I've got an idea of using UART0's TX/RX
with UART1's modem control lines for RS232, and UART1 TX/RX for RS485.
Modem control, and actual serial interface for UART1 seem quite
independent.

Any other ideas ?

Regards,
Przemyslaw

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