RC16xxxx-SSM
2017 Radiocrafts AS
RC16xxxx-SSM User Manual (rev. 1.00)
Page 19 of 20
Radiocrafts
Embedded Wireless Solutions
Sensor data transmission
Sensor data is transmitted periodically, as configured with paramet
er “Transmission Interval”
(See memory configuration table earlier in this document). The sensor data is transmitted in
the same order as their IDs. If the sensors were configured as in the example above, the
Sigfox payload would be this:
Byte 1:
Analog input
Byte 2:
Internal
Temperature
Byte 3:
Module
supply
voltage
Byte 4:
Temperature
MSB
Byte 5:
Temperature
LSB
Byte 6:
Relative
Humidity
Sensor interface electrical connections
As shown in the above picture, the RC16xxxx-SMM includes a set of common sensor
interfaces. For details refer to the respective datasheet. Connection to the respective
interfaces must be done with the correct voltage levels.
Digital IOs
Digital IOs must be at the same levels as the module
– defined by VCC. No IO shall ever be
above the VCC level.
I
2
C
I
2
C shall have pullups on both lines in accordance with the I
2
C-bus specification from NXP.
UART
UART is only used for module configuration and does not support sensors.
Analog inputs
For the analog input, the range is an absolute 0V to 1.25V.
