RCM3700 and prototyping board

Rabbit
1

Hello

On the prototyping board for the use of serial port TXC and RXC it necessary to configure the JP2 .

I don’t find the instructions for configure the jumper on JP2

It’s necessary to active the serial port with:

BitWrPortI(PEDR, &PEDRShadow, 0, 5); //set low to enable rs232 device

Thanks for the help.

2

Here’s the schematic for the RCM3600/RCM3700 Prototyping Board.

You can use JP2 to connect PG6/PG7 (TXE/RXE) to either the RS232 transceiver (by connecting 1-3 and 2-4 on JP2) or to a RS485 transceiver (by connecting 3-5 and 4-6).

You only need to place jumpers on JP2 if you’re making use of PG6/PG7 on your RS232 serial port, perhaps as CTS/RTS, DTR/DSR, or another serial port. Otherwise leave the jumpers out and just make use of TXC/RXC directly.

Make sure you set PE5 to be an output, in addition to setting the Data Register:

BitWrPortI(PEDDR, &PEDDRShadow, 1, 5); //set RS232 enable pin as output
3

Thank you for the response

Actually on the prototyping boad i have jumper in 1-3 and 2-4

So i have just to take off this two jumper for use the TXC and RXC

Thanks for the help

4

The jumper setting shouldn’t have any impact on using TXC and RXC. It’s only used for routing TXE and RXE.