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©2019 NEC Display Solutions, Ltd. Page 38 of 74
Point an IR Remote at the IR sensor on the display and press some buttons. Output should be seen
showing the raw pulses received.
8.6 Enabling the serial port (UART) to the display and allowing
application access
1. Make sure the display support is enabled.
a. On the NEC display select the COMPUTE MODULE video input.
b. Navigate to the COMPUTE MODULE menu on the OSD.
c. Select SERVICE MENU.
d. Confirm the MONITOR CONTROL is set to ENABLE.
e. If not set, then:
i. Select SETTING LOCK and then select OFF.
ii. Enter the passcode. The default is 0 0 0 0.
iii. Select MONITOR CONTROL and then select ENABLE.
2. Edit the cmdline.txt file to allow app access to the serial port and prevent bootup information
being sent to the display:
sudo nano /boot/cmdline.txt
Edit to remove the section “console=serial0,115200” or similar such as
“console=ttyAMA0,115200”
Save the file by pressing CONTROL+o then ENTER.
Exit Nano by pressing CONTROL + x.
a
b
d
c
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