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
Message
LPC2138 UART0/1 and modem control
2005-12-20 by czajniczek