Bravo HW User Guide
1VV0301646 Rev. 1
Page
30
of
47
2020-03-23
DTR
Control
DTE to
DCE
Computer (DTE) tells the DCE that it is ready to
communicate. Raised by DTE when powered on. In auto-
answer mode raised only when RI arrives from DCE
DSR
Control
DCE to
DTE
Modem (DCE) tells the computer that it is ready to talk.
Raised by DCE to indicate ready.
RTS
Control
DTE to
DCE
Computer (DTE) asks the modem if it can send information.
Raised by DTE when it wishes to send. Expects CTS from
DCE.
CTS
Control
DCE to
DTE
Modem (DCE) tells the computer (DTE) that it can send
information. Raised by DCE in response to RTS from DTE.
RI
Control
DCE to
DTE
Set when incoming ring detected, used for auto-answer
application. DTE raises DTR to answer (only used in
connection with modem).
Sensors
Figure 16 - Bosch Sensors
The Bravo board includes the following Bosch Sensortec sensors:
•
BHI160B low-power smart-hub with an integrated three axis gyroscope plus an
integrated three axis accelerometer plus a programmable microcontroller.
•
BMM150 low power and low noise 3-axis digital geomagnetic sensor
•
BME680 integrated environmental sensor
The BHI160B huband BME680 environmental sensor are connected to the ME910
module using I2C communication, the BMM150 magnetometer is connected to the
BHI160B smart hub auxiliary I2C port.
