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©
2019 Radiocrafts AS
RC232 User Manual (ver 2.01)
RC232 USER MANUAL
Command
Details
Comments
ASCII
hex
‘S’
0x53
Signal Strength (RSSI)
Argument
Options
Returns
(none)
(none)
1 byte quality
number
+ Prompt (>)
The module provide a digital Received Signal Strength
Indicator (RSSI) through the ‘S’ command, or attached to the
received messages (RSSI_MODE configuration parameter).
The RSSI value appended to a received message is the signal
strength of that received packet. The RSSI value is an 8 bit
character (one byte) indicating the current input signal strength
or the signal strength of the received message. The signal
strength can be used as an indication of fading margin, or as a
carrier sense signal to avoid collisions.
The RSSI value increases with increased input signal strength
in 0.5 dB steps. Input signal strength is given by (typ.):
P = - RSSI / 2 [dBm]
The instantaneous RSSI
can be read using the ‘S’
command. This reading
has a delay due to the
settling time of the
receiver.
‘T’
0x54
Destination Address
This command is used to set the destination address. It will set
1 byte or 4 bytes depending on ADDRESS_MODE
configuration parameter. It will output a prompt character after
each byte sent in, so if sending in 4 bytes, you must wait for
prompt between each byte.
Argument
Options
Returns
DID
Prompt (>)
‘U’
0x56
Temperature monitoring
Argument
Options
Returns
(none)
(none)
1 byte
temperature
+ Prompt (>)
The module provides readings of a digital temperature
monitoring sensor (TEMP) through the ‘U’ command. The
module returns an 8 bit character (one byte) indicating the
current temperature in degrees Celsius (°C) followed
immediately by a second character w
hich is the prompt (‘>’).
The TEMP value increases with increased temperature in 1 °C
steps and has an accuracy of +/- 2 °C. The temperature is
given by:
T = TEMP(dec)
– 128 [°C]
(example: TEMP=0x98 24 °C)
