ADLINK Technology DLAP-201 Series, Руководство пользователя

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26 Using the System
Leading
EDGE COMPUTING
4. Look for “NVidia Corp.” in the output (an example is cir-
cled in red in the screenshot below). If found, the host
PC recognizes the client and you may proceed. If not,
double-check the OTG cable connection and perform
troubleshooting as needed until the client is recognized.
Figure 3-1: Successful USB 2.0 Connection
5. Now run the following commands in the directory that
contains your downloaded L4T file:
# sudo tar xzvf Linux_for_Tegra.tar.gz
# cd Linux_for_Tegra
# sudo ./flash.sh jetson-tx2 mmcblk0p1
6. Allow the update to complete. For details about available
command-line options, read the “flash.sh” file.
3.3 COM Port Configuration
By default, the DLAP-201 is configured to support the RS-232 pro-
tocol. For details about changing to RS-422/485, see
Section 2.9
Internal Jumper Settings on page 23.
To set the direction to transmit (TX) or receive (RX), open a termi-
nal within DLAP-201’s Linux system and run these commands:
# sudo -s
# cd /sys/class/gpio
# echo 244 > export
# echo out > gpio244/direction
To set the direction to TX, run this command:
# echo 1 > gpio244/value
Otherwise, to set the direction to RX, run this command:
# echo 0 > gpio244/value