RS-232

A single RS-232 port on UART0 of the module is for developer testing and for module firmware programming. The UART0 interface has a standard 9-pin D-type connector and accepts RS-232 voltage levels. Table 6 provides RS-232 connector pinouts.

Table 6. RS-232 port pinouts

Pin Signal
1 Tied to pins 4 and 6
2 Transmit Data Output (TX)
3 Receive Data Input (RX)
4 Tied to pins 1 and 6
5 Ground
6 Tied to pins 1 and 4
7 Clear to Send (CTS)
8 Request to Send (RTS)
9 Not Connected



By default, Sedona debug console output is directed to this port, using the following serial parameters:

During testing and development, you typically use the provided straight-through DB9M to DB9F cable to connect this RS-232 port to your engineering PC, along with a terminal emulation program to monitor this debug level messaging. See SED-M0x module console.

The RS-232 port on the Sedona dev board can also be used for programming the module, using the “flasher” type selection for a PC port from the “Jennic Serial Port Tool” in the Sedona Workbench. Again, a pushbutton switch combination is required. See Table 3.