Data Sheet

There will also be a setting appear that allows you to Display (or Not Display) the bridge
battery in xDrip. The default is to display this.
You should now be able to start your sensor, allow xDrip to capture at least two packets, and
do a double calibration to start using the system.
Serial Terminal Commands
xBridge2 supports three commands you can issue on a serial terminal connected to the
wixel via USB.
Note: The wixel MUST be awake for you to issue these commands. The best way to ensure
this is the case, is to power cycle your wixel, as it will stay awake until it captures a packet
from the Dexcom transmitter. Otherwise, wait until the HM-1x Status LED is blinking or
solid, which indicates the wixel is awake. This will only hold true with an xBridge circuit.
When the wixel is power cycled, you have 10 seconds to connect a serial terminal before it
goes into operation. Attempting to connect a serial terminal to a sleeping wixel will fail. Try
again until you succeed, if you cannot power cycle the wixel.
S - Pressing the S key will provide you with a status display. This is useful in
troubleshooting to let you know how xBridge2 thinks it is configured.
D – Pressing the D key will toggle (turn on or off the debug output) on the USB serial line.
You will not need to do this unless you are experimenting with using an xBridge2 with a
serial/USB program or device, that may be being confused bridy the debug output. Of
course, if you are following the protocol description, this should not be necessary. However,
if you are using a PERL SerialIO library, that expects either a line end or time delay
parameter, you cannot effectively do a byte-by-byte capture of the stream and look for the
identifying bytes for each packet type. In this case, this command may be of use.
B – Pressing the B key will toggle “sleeping” (powering down) of the HM-1x module on and
off. It will display a message saying if it is on or off. This will assist those with phones or
Android versions that do not reliably reconnect to the BLE device once it is powered on. If
you experience lots of Bluetooth issues, or packet loss, you can use this command to
prevent the HM-1x module from being powered down, and this should then resolve the
issue. NOTE: This will impact your bridge battery life.
L – Pressing the L key will toggle the display of LEDs. Turning off LEDs will give you extra
battery life. If you are satisfied that you can trust all is well with your bridge, you can turn
LEDs off. The most affected by this is the Yellow BLE Connection State LED on the wixel.
Otherwise known as “The Blazing Sun”. You might get a better night’s sleep with this off.
Problem Solving
Obviously, the first thing to check is the wiring between the component boards. Make sure
all of this is correct before you go any further.