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6
GPIO
The General Purpose Input and Output (GPIO) are digital signals available from the front panel of the
digitizer. The GPIO is an optional use of the TRIG and SYNC connectors. The user assigns a function
to these pins, either in the firmware through the ADQ Development Kit or from software.
6.1 GPIO on TRIG connector
The connectors for TRIG connector can be used as GPIO. The process is illustrated in the block dia-
gram in
Figure
23.
% &0
% 0 0
%&% 0
% &0
%&% 0
% 0 0
. /
#
DESCRIPTION
a
The external pin is automatically connected to the activated function.
b
The GPIO input function always reads the state of the pin. The GPIO
output function is activated by the user.
c
The user may access the pin by reading and writing from the software.
d
The user may build firmware in the ADQ Development Kit for real-time
interaction with the GPIO signals.Then GPIO is accessed through register
access commands.
Figure 23: Using front panel connector TRIG as GPIO.
19-2302 A
2020-09-16
1
%2
&
) %
./
1
%2
3) %
./
./
USER COMMAND
SetDirectionGPIOPort
ReadGPIOPort
WriteGPIOPort
ReadUserRegister
WriteUserRegister
ADQ8-4X Manual
19-2302 A 2020-09-16
33(46)
%(%3%& 4
REF
6.3
6.3
6.4
6.3
6.4
6.5
33(46)
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