x-IMU3 User Manual v0.11
April 6, 2022
Argument
Description
1
RSSI percentage
2
RSSI power in dBm
Table 24: RSSI message arguments
The following message examples are for a timestamp of 1 second (1,000,000 microseconds) and argument
values of:
1. RSSI percentage =
100
2. RSSI power =
-50
ASCII example:
W,1000000,
100.000
,
-50.0000
\
r
\
n
Binary example:
D7 40 42 0F 00 00 00 00 00
00 00 C8 42
00 00 48 C2
0A
8.2.13
Serial accessory message
The serial accessory message provides timestamped received serial accessory data.
Serial accessory
messages are sent as serial accessory data is received as configured in the device settings. The first value of
an ASCII message is the character “S” and the argument is the received data. Received byte values less than
0x20 or greater than 0x7E will be replaced with the character “?” so that the argument is a string of printable
characters. The string is not null-terminated. The first byte of a binary message is 0xD3 (equal to 0x80 + “S”)
and the argument is the unmodified received data. The message arguments are described in Table 25.
Argument
Description
1
Received serial accessory data
Table 25: Serial accessory message arguments
The following message examples are for a timestamp of 1 second (1,000,000 microseconds) and argument
values of:
1. Data =
0x61 0x62 0x63 0x31 0x32 0x33 0xF1 0xF2 0xF3
ASCII example:
S,1000000,
abc123???
\
r
\
n
Binary example:
D3 40 42 0F 00 00 00 00 00
61 62 63 31 32 33 F1 F2 F3
0A
8.2.14
Notification message
The notification message provides timestamped notifications of system events. Notification messages may be
sent by the device at any time and cannot be disabled. The first value of an ASCII message is the character
“N”. The first byte of a binary message is 0xCE (equal to 0x80 + “N”). The argument of both ASCII and binary
messages is a string of printable characters. The string is not null-terminated. The message arguments are
described in Table 26.
Argument
Description
1
Notification string
Table 26: Notification message arguments
30
