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About the development board
Development board LEDs
The development board contains 21 LEDs labeled CR1 through CR21. The following table lists and
describes the LEDs.
Board
Description
label
CR1
CR2
CR3
CR4
CR5
CR6
CR7
CR8
Digi Connect EM and Digi Connect Wi-EM Hardware Reference
LED descriptions
Color or state
TXD-2
RXD-2
CTS
DTR
TXD-1
RXD-1
RTS
DCD
Flickering
Green
Flickering
Green
Yellow
Green
Off
Not connected or signal not being
Yellow
Green
Off
Not connected or signal not being
Flickering
Green
Flickering
Green
Yellow
Green
Off
Not connected or signal not being
Yellow
Green
Off
Not connected or signal not being
Development board LEDs
Indication
Serial activity
Inactive
Serial activity
Inactive
Active
Inactive
driven
Active
Inactive
driven
Serial activity
Inactive
Serial activity
Inactive
Active
Inactive
driven
Active
Inactive
driven
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