Module support
Writing custom firmware
XBee/XBee-PRO® S2C ZigBee® RF Module
264
ModuleIsXBeePro = true;
} else {
ModuleIsXBeePro = false;
}
Special instructions for using the JTAG interface
There are four JTAG programming pins on the XBee/XBee-PRO ZigBee RF Module through which
firmware can be loaded onto the EM357 processor. Three of these pins are also connected to a second
pin on the device and are used for separate functions. The following table indicates the JTAG signal
name, the primary connection pin on the device, the secondary connection pin, and the secondary
signal name.
CAUTION!
Do not load the secondary pins with circuitry that might interfere with JTAG
programming (for example, an LED tied directly to the ASSOCIATE / DIO5 line). Any
loading circuitry should be buffered to avoid conflicts (for example, connecting
ASSOCIATE / DIO5 to the gate of a MOSFET which drives the LED).
JTAG pin name
Primary XBee pin
Secondary XBee pin
Secondary pin name
JTCK
18
N/A
N/A
JTDO
19
26
ON / SLEEP / DIO9
JTDI
20
28
ASSOCIATE / DIO5
JTMS
21
5
DIO12