Difference between revisions of "DS 015 Development"

Latest revision as of 10:15, 3 October 2025

Attention

Account & Password

Account number

ubuntu

In device used "sudo" or "sudo su" to root. Password required.

ubuntu

Flash Mac Address

First need to add a patch to the device tree{ Commit da11ea0d: [LAN] Enable Ethernet Controller I225-LM/I225-V support }

Download I226 tool to Device

I226 Flash Tool

Extract file

$ sudo tar zxvf LAN_I226_DS-015.tar.gz

Flash

Attention : The MAC address can only be burned in once

Please make sure mac address and set in : -mac=<XXXXXXXXXXXX>

$ cd LAN_I226_DS-015/I226_Flash_Tool
$ sudo su
# ./EepromAccessTool
# lspci
# setpci -s 0007:01:00.0 COMMAND=0007
# ./EepromAccessTool -nic=1 -f=FXVL_125C_V_2MB_2.27.bin -mac=XXXXXXXXXXXX

Power off and restart

Cold reboot the device.

Burnin

DS-015 Burnin

BootCount

BootCount tool install

In first time please install bootcount tool

$ cd /usr/local/bin/BootCount+shutdown
$ sudo chmod a+x install.sh
$ sudo ./install.sh
$ cd /home/ubuntu
$ sudo ./bootCount.sh

Default enter the OS 30s will poweroff

Boot On Off

The boot count message will be printed before log-in.

Reset the boot count please remove bootCount.tt.

$ rm bootCount.tt

Tools

Test Command

JP6.2

CAN

Hardware setting

Set JPCAN1 Jumper to Can mode

Switch SW3 to ON

<Receive> In terminal, run below command

$ sudo su
# modprobe can
# modprobe can-dev
# modprobe mttcan
# ip link set can0 type can bitrate 500000
# ip link set can0 up
# candump can0

<Transmit> In other device terminal, run below command

$ sudo su
# modprobe can
# modprobe can-dev
# modprobe mttcan
# ip link set can0 type can bitrate 500000
# ip link set can0 up
# cansend can0 123#abcdabcd

WatchDog

$ sudo su
# sync; sleep 2; sync; echo c > /proc/sysrq-trigger

Audio

Line-Out : Codec Mixer Controls

$ amixer -c APE cset name="I2S1 Mux" 0 
$ amixer -c APE cset name="I2S2 Mux" "ADMAIF1"
$ amixer -c APE cset name="CVB-RT DAC MIXL INF1 Switch" "on"
$ amixer -c APE cset name="CVB-RT DAC MIXR INF1 Switch" "on"
$ amixer -c APE cset name="CVB-RT Stereo DAC MIXL DAC L1 Switch" "on"
$ amixer -c APE cset name="CVB-RT Stereo DAC MIXR DAC R1 Switch" "on"
$ amixer -c APE cset name="CVB-RT DAC1 Playback Volume" "175,175"
$ amixer -c APE cset name="CVB-RT LOUT MIX DAC L1 Switch" "on"
$ amixer -c APE cset name="CVB-RT LOUT MIX DAC R1 Switch" "on"
$ amixer -c APE cset name="CVB-RT OUT Playback Switch" "on,on"
$ amixer -c APE cset name="CVB-RT OUT Playback Volume" "31"

Line-Out

$ aplay -D hw:APE,0 <in_wav>

Mic-In : Codec Mixer Controls

$ amixer -c APE cset name="ADMAIF1 Mux" "I2S2"
$ amixer -c APE cset name="CVB-RT RECMIXL BST1 Switch" "on"
$ amixer -c APE cset name="CVB-RT RECMIXR BST2 Switch" "on"
$ amixer -c APE cset name="CVB-RT IN1 Boost" 8
$ amixer -c APE cset name="CVB-RT IN2 Boost" 8
$ amixer -c APE cset name="CVB-RT Stereo ADC1 Mux" "ADC"
$ amixer -c APE cset name="CVB-RT Stereo ADC MIXL ADC1 Switch" "on"
$ amixer -c APE cset name="CVB-RT Stereo ADC MIXR ADC1 Switch" "on"

Mic-In

$ arecord -D hw:APE,0 -r 44100 -c 2 -f S16_LE output.wav

TPM

Pre-install TPM-tools

$ sudo apt install --yes tpm2-tools

(1)產生randon code

$ sudo su

root@linux:/home/ubuntu# tpm2_getrandom --hex 20

(2) 對指定檔案 msg.dat 加密

root@linux:/home/ubuntu# tpm2_createprimary -C p -c platform_primary.ctx
root@linux:/home/ubuntu# tpm2_create -C platform_primary.ctx -G rsa2048 -u key.pub -r key.priv
root@linux:/home/ubuntu# tpm2_load -C platform_primary.ctx -u key.pub -r key.priv -c key.ctx
root@linux:/home/ubuntu# echo "my test" >msg.dat
root@linux:/home/ubuntu# tpm2_rsaencrypt -c key.ctx -o msg.enc msg.dat
root@linux:/home/ubuntu# cat msg.enc
root@linux:/home/ubuntu# tpm2_rsadecrypt -c key.ctx -o msg.ptext msg.enc
root@linux:/home/ubuntu# cat msg.ptext 
root@linux:/home/ubuntu# cat msg.dat

(3) 將資料儲存至 tpm 內存

root@linux:/home/ubuntu# tpm2_nvdefine -Q 0x1500031 -C o -s 32 -a "ownerread|policywrite|ownerwrite"
root@linux:/home/ubuntu# echo "write_tpm_adv" >  adv.data
root@linux:/home/ubuntu# tpm2_nvwrite -Q 0x1500031 -C o -i adv.data
root@linux:/home/ubuntu# tpm2_nvread -Q 0x1500031 -C o -s 32 -o read.data
root@linux:/home/ubuntu# cat read.data

(4) 確認已經寫入儲存區域　

root@linux:/home/ubuntu# tpm2_nvreadpublic > nv.out
root@linux:/home/ubuntu# cat nv.out

Error

ERROR: Esys_NV_DefineSpace(0x14C) - tpm:error(2.0): NV Index or persistent object already defined
ERROR: Failed to create NV index 0x1500031.

fixed

root@linux:/home/ubuntu# tpm2_nvundefine 0x1500031

RTC

1. Please remove all internet.

$ sudo su
# date 010610452023 && hwclock -w && date
# date 010100002000 && hwclock -r && date
# hwclock -s && date
# reboot
$ sudo su
# hwclock -s && date

UART

Orin-Nano COM1: ttyTHS1

Switch to 232, 422, 485

Select the mode and refer to the table

RS-232

COM1_SW1 OFF-OFF-OFF-OFF

$ sudo su
# stty -F /dev/ttyTHS1 speed 115200 raw -echo
# cat /dev/ttyTHS1 &
# echo "1234" > /dev/ttyTHS1

RS-422

<Receive> In terminal, run below command
COM1_SW1 ON-OFF-ON-OFF

$ sudo su
# stty -F /dev/ttyTHS1 speed 115200
# cat /dev/ttyTHS1 &
# echo "1234" > /dev/ttyTHS1

<Transmit> In other device terminal, run below command
COM1_SW1 ON-OFF-ON-OFF

$ sudo su
# stty -F /dev/ttyTHS1 speed 115200
# cat /dev/ttyTHS1 &
# echo "1234" > /dev/ttyTHS1

RS-485

<Receive> In terminal, run below command
COM1_SW1 ON-ON-ON-ON

$ sudo su
# stty -F /dev/ttyTHS1 speed 115200 raw -echo
# cat /dev/ttyTHS1 &
# echo "1234" > /dev/ttyTHS1

<Transmit> In other device terminal, run below command
COM1_SW1 ON-ON-ON-OFF

$ sudo su
# stty -F /dev/ttyTHS1 speed 115200 raw -echo
# cat /dev/ttyTHS1 &
# echo "1234" > /dev/ttyTHS1

GMSL

APPROPHO Camera

Camera type : AR0822
HW setting : Camera link to GMSL port

Please install camera driver first
Attention : can only be executed once command to setup camera
Then system will reboot

$ cd /usr/local/bin/approcam
$ sudo ./set_approcam.sh

Check Video channel "video0" "video1"

$ ls /dev/video*

Preview command

$ cd /home/ubuntu
$ sudo ./enable-approcamera-4k.sh

Reference

DS-015

Difference between revisions of "DS 015 Development"

Latest revision as of 10:15, 3 October 2025

Contents

Attention

Account & Password

Flash Mac Address

Download I226 tool to Device

Extract file

Flash

Power off and restart

Burnin

BootCount

BootCount tool install

Boot On Off

Tools

Test Command

CAN

WatchDog

Audio

TPM

RTC

UART

Switch to 232, 422, 485

RS-232

RS-422

RS-485

GMSL

APPROPHO Camera

Reference

Navigation menu

Personal tools

Namespaces

Variants

Views

More

Search

Navigation

Tools

@@ Line 1: / Line 1: @@
 ==Attention==
-In device used "sudo" or "sudo su" .
+===Account & Password===
+Account number
+<pre>
+ubuntu
+</pre>
+In device used "sudo" or "sudo su" to root.
 Password required.
 <pre>
@@ Line 8: / Line 13: @@
 == Flash Mac Address ==
-First, you need to add a patch to the device tree{ Commit da11ea0d: [LAN] Enable Ethernet Controller I225-LM/I225-V support }
+First need to add a patch to the device tree{ Commit da11ea0d: [LAN] Enable Ethernet Controller I225-LM/I225-V support }
 === Download I226 tool to Device ===
@@ Line 19: / Line 24: @@
 === Flash ===
-<span style="color:#FF0000;">'''The MAC address can only be burned in once'''</span>
+Attention : <span data-darkreader-inline-color="" style="color: rgb(205, 0, 0); --darkreader-inline-color: #ff3d3d;">The MAC address can only be burned in once</span>
 Please make sure mac address and set in : -mac=<XXXXXXXXXXXX>
@@ Line 36: / Line 41: @@
 ==Burnin==
+[[DS_015_Burnin|DS-015 Burnin]]
 ==BootCount==
@@ Line 104: / Line 110: @@
 ==== '''Audio''' ====
+Line-Out : Codec Mixer Controls
+<pre>
+$ amixer -c APE cset name="I2S1 Mux" 0
+$ amixer -c APE cset name="I2S2 Mux" "ADMAIF1"
+$ amixer -c APE cset name="CVB-RT DAC MIXL INF1 Switch" "on"
+$ amixer -c APE cset name="CVB-RT DAC MIXR INF1 Switch" "on"
+$ amixer -c APE cset name="CVB-RT Stereo DAC MIXL DAC L1 Switch" "on"
+$ amixer -c APE cset name="CVB-RT Stereo DAC MIXR DAC R1 Switch" "on"
+$ amixer -c APE cset name="CVB-RT DAC1 Playback Volume" "175,175"
+$ amixer -c APE cset name="CVB-RT LOUT MIX DAC L1 Switch" "on"
+$ amixer -c APE cset name="CVB-RT LOUT MIX DAC R1 Switch" "on"
+$ amixer -c APE cset name="CVB-RT OUT Playback Switch" "on,on"
+$ amixer -c APE cset name="CVB-RT OUT Playback Volume" "31"
+</pre>
 Line-Out
 <pre>
-$ aplay -D hw:1,0 &lt;WAV file&gt;
+$ aplay -D hw:APE,0 <in_wav>
 </pre>
+Mic-In : Codec Mixer Controls
+<pre>
+$ amixer -c APE cset name="ADMAIF1 Mux" "I2S2"
+$ amixer -c APE cset name="CVB-RT RECMIXL BST1 Switch" "on"
+$ amixer -c APE cset name="CVB-RT RECMIXR BST2 Switch" "on"
+$ amixer -c APE cset name="CVB-RT IN1 Boost" 8
+$ amixer -c APE cset name="CVB-RT IN2 Boost" 8
+$ amixer -c APE cset name="CVB-RT Stereo ADC1 Mux" "ADC"
+$ amixer -c APE cset name="CVB-RT Stereo ADC MIXL ADC1 Switch" "on"
+$ amixer -c APE cset name="CVB-RT Stereo ADC MIXR ADC1 Switch" "on"
+</pre>
+Mic-In
+<pre>
+$ arecord -D hw:APE,0 -r 44100 -c 2 -f S16_LE output.wav
+</pre>
 ==== '''TPM''' ====
@@ Line 117: / Line 154: @@
 (1)產生randon code
+<pre>$ sudo su
+</pre>
 <pre>root@linux:/home/ubuntu# tpm2_getrandom --hex 20
 </pre>
@@ Line 155: / Line 194: @@
 ==== '''RTC''' ====
+. Please remove all internet.
-DUT AC on:<br/> 1. Power on DUT and boot into OS.<br/> 2. Connect a LAN cable from the DUT to DHCP server.<br/> 3. Get a dynamic IP from DHCP server.<br/> 4. Type cmd to disable ntp service in DUT.
+<pre>
-<pre># sudo timedatectl set-ntp false</pre>
+$ sudo su
+# date 010610452023 && hwclock -w && date
-. Synchronize system time and RTC time with NTP server.
+# date 010100002000 && hwclock -r && date
-<pre># ntpdate tock.stdtime.gov.tw <===安裝ntpdate方式: $sudo apt-get install ntpdate <enter>
+# hwclock -s && date
-# hwclock -w
+# reboot
+$ sudo su
+# hwclock -s && date
 </pre>
-. Keep the DUT on for 24 hours.<br/> 7. Synchronize system time and RTC time with NTP server again and check inaccuracies.
+==== '''UART''' ====
-<pre># ntpdate tock.stdtime.gov.tw && hwclock -s &&ntpdate -u tock.stdtime.gov.tw
+<font color="#0070c0">Orin-Nano</font> COM1: ttyTHS1 <br/>
-</pre>
+[[File:Uart ds015.png|600px|border]]
-==== '''Camera''' ====
+===== '''Switch to 232, 422, 485''' =====
+Select the mode and refer to the table
-The imx219 mode:<br/> Size: Discrete 3280x2464 Interval: Discrete 0.048s (21.000 fps)<br/> Size: Discrete 3280x1848 Interval: Discrete 0.036s (28.000 fps)<br/> Size: Discrete 1920x1080 Interval: Discrete 0.033s (30.000 fps)<br/> Size: Discrete 1640x1232 Interval: Discrete 0.033s (30.000 fps)<br/> Size: Discrete 1280x720 Interval: Discrete 0.017s (60.000 fps)<br/> <br/> Preview command:<br/> 3280x2464
+[[File:Uart ds015 1.png|600px|border]]
-<pre>$ gst-launch-1.0 nvarguscamerasrc&nbsp;! 'video/x-raw(memory:NVMM), width=3280, height=2464, format=NV12, framerate=21/1'&nbsp;! nv3dsink</pre>
-x1848
-<pre>$ gst-launch-1.0 nvarguscamerasrc&nbsp;! 'video/x-raw(memory:NVMM), width=3280, height=1848, format=NV12, framerate=28/1'&nbsp;! nv3dsink</pre>
-x1080
-<pre>$ gst-launch-1.0 nvarguscamerasrc&nbsp;! 'video/x-raw(memory:NVMM), width=1920, height=1080, format=NV12, framerate=29/1'&nbsp;! nv3dsink</pre>
-x1232
-<pre>$ gst-launch-1.0 nvarguscamerasrc&nbsp;! 'video/x-raw(memory:NVMM), width=1640, height=1232, format=NV12, framerate=29/1'&nbsp;! nv3dsink</pre>
-x720
-<pre>$ gst-launch-1.0 nvarguscamerasrc&nbsp;! 'video/x-raw(memory:NVMM), width=1280, height=720, format=NV12, framerate=59/1'&nbsp;! nv3dsink</pre>
-&nbsp;
-==== '''GPIO Expander''' ====
-Test GPIO high/low<br/> [[File:020gpio.jpg|300px|air020gpio.png]]
-[[File:GPIO-TABLE.png|700px|485-RTS-PIN.png]]
-<br/> 1).Switch to root
-<pre>ubuntu@localhost:~ sudo -s
-password：ubuntu
-</pre>
-).Commnad&nbsp;: where <GPIO>&nbsp;: gpio number and <LEVEL>&nbsp;: high(1)/low(0)
-<font color="#0070c0">Xavier-NX</font> JetPack 4.x:
-For example, pull up GPIO1&nbsp;to high.
-<pre>root@localhost:/home/ubuntu# echo 393 > /sys/class/gpio/export
-root@localhost:/home/ubuntu# echo out > /sys/class/gpio/gpio393/direction
-root@localhost:/home/ubuntu# echo 1 > /sys/class/gpio/gpio393/value</pre>
-<font color="#0070c0">Xavier-NX</font> JetPack 5.1:
-For example, pull up GPIO1&nbsp;to high.
-<pre>root@localhost:/home/ubuntu# echo 419 > /sys/class/gpio/export
-root@localhost:/home/ubuntu# echo out > /sys/class/gpio/PN.01/direction
-root@localhost:/home/ubuntu# echo 1 > /sys/class/gpio/PN.01/value
-</pre>
-<font color="#0070c0">Orin-Nano</font> JetPack 6.2:
-For example, pull up GPIO1&nbsp;to high.
-<pre>root@localhost:/home/ubuntu# echo 391 > /sys/class/gpio/export
-root@localhost:/home/ubuntu# echo out > /sys/class/gpio/PH.00/direction
-root@localhost:/home/ubuntu# echo 1 > /sys/class/gpio/PH.00/value
-</pre>
-==== '''UART''' ====
-<font color="#0070c0">Xavier-NX</font> COM1: ttyTHS1 , COM2: ttyTHS0 <br/>
-<font color="#0070c0">Orin-Nano</font> COM1: ttyTHS1 , COM2: ttyTHS2 <br/>
-<br/> Switch to root
-<pre>ubuntu@localhost:~ sudo -s
-password：ubuntu
-</pre>
-[[File:Jetson air020 board com.jpg|400px|Jetson air020 board com.jpg]]
-[[File:020 comport table.png|800px|020 comport table.png]]
 ===== '''RS-232''' =====
+COM1_SW1 OFF-OFF-OFF-OFF
-<font color="#0070c0">Xavier-NX</font> COM1: ttyTHS1 , COM2: ttyTHS0 <br/>
+<pre>
-COM1&nbsp;: COM1_SW1 OFF-OFF-OFF-OFF
+$ sudo su
-<pre>stty -F /dev/ttyTHS1 speed 115200 raw -echo
+# stty -F /dev/ttyTHS1 speed 115200 raw -echo
-cat /dev/ttyTHS1 &
+# cat /dev/ttyTHS1 &
-echo "1234" > /dev/ttyTHS1
+# echo "1234" > /dev/ttyTHS1
-</pre>
-COM2&nbsp;: COM2_SW1 OFF-OFF-OFF-OFF
-<pre>stty -F /dev/ttyTHS0 speed 115200 raw -echo
-cat /dev/ttyTHS0 &
-echo "1234" > /dev/ttyTHS0
 </pre>
-<font color="#0070c0">Orin-Nano</font> COM1: ttyTHS1 , COM2: ttyTHS2 <br/>
 ===== '''RS-422''' =====
+<Receive> In terminal, run below command
-<font color="#0070c0">Xavier-NX</font><br/>
+<br/> COM1_SW1 ON-OFF-ON-OFF
-COM1&nbsp;: COM1_SW1 ON-OFF-ON-OFF<br/>
+<pre>
-COM2&nbsp;: COM2_SW1 ON-OFF-ON-OFF<br/> COM2 -> COM1
+$ sudo su
-<pre>stty -F /dev/ttyTHS1 speed 115200
+# stty -F /dev/ttyTHS1 speed 115200
-stty -F /dev/ttyTHS0 speed 115200
+# cat /dev/ttyTHS1 &
-cat /dev/ttyTHS1 &
+# echo "1234" > /dev/ttyTHS1
-echo "1234" > /dev/ttyTHS0
 </pre>
-COM1&nbsp;-> COM2
+<Transmit> In other device terminal, run below command
-<pre>stty -F /dev/ttyTHS0 speed 115200
+<br/> COM1_SW1 ON-OFF-ON-OFF
-stty -F /dev/ttyTHS1 speed 115200
+<pre>
-cat /dev/ttyTHS0 &
+$ sudo su
-echo "1234" > /dev/ttyTHS1
+# stty -F /dev/ttyTHS1 speed 115200
+# cat /dev/ttyTHS1 &
+# echo "1234" > /dev/ttyTHS1
 </pre>
-<font color="#0070c0">Orin-Nano</font> COM1: ttyTHS1 , COM2: ttyTHS2 <br/>
 ===== '''RS-485''' =====
+<Receive> In terminal, run below command
+<br/> COM1_SW1 ON-ON-ON-ON
+<pre>
+$ sudo su
+# stty -F /dev/ttyTHS1 speed 115200 raw -echo
+# cat /dev/ttyTHS1 &
+# echo "1234" > /dev/ttyTHS1
+</pre>
-Need to adjust the COM port SW1 as shown below.<br/> COM1&nbsp;: COM1_SW1<br/> COM2&nbsp;: COM2_SW1<br/>
+<Transmit> In other device terminal, run below command
-[[File:485-RTS-PIN.png|700px|485-RTS-PIN.png]]
+<br/> COM1_SW1 ON-ON-ON-OFF
-<br/> &nbsp;
+<pre>
+$ sudo su
+# stty -F /dev/ttyTHS1 speed 115200 raw -echo
+# cat /dev/ttyTHS1 &
+# echo "1234" > /dev/ttyTHS1
+</pre>
-<font color="#0070c0">Xavier-NX</font>
+==== '''GMSL''' ====
-COM1&nbsp;: /dev/ttyTHS1<br/> COM2&nbsp;: /dev/ttyTHS0<br/>
+===== '''APPROPHO Camera''' =====
-[Hardware flow control]<br/>
-COM2&nbsp;-> COM1<br/> COM1_SW1 ON-ON-ON-ON, COM2_SW1&nbsp;ON-ON-ON-OFF
-<pre>stty -F /dev/ttyTHS1 speed 115200
-stty -F /dev/ttyTHS0 speed 115200
-cat /dev/ttyTHS1 &
-echo "1234" > /dev/ttyTHS0
-</pre>
-COM1&nbsp;-> COM2<br/> COM1_SW1 ON-ON-ON-OFF, COM2_SW1&nbsp;ON-ON-ON-ON
+Camera type : AR0822
-<pre>stty -F /dev/ttyTHS0 speed 115200
+<br/>
-stty -F /dev/ttyTHS1 speed 115200
+HW setting : Camera link to GMSL port
-cat /dev/ttyTHS0 &
+<br/>
-echo "1234" > /dev/ttyTHS1
+[[File:Appro-gmsl.jpg|600px|border]]
+<br/>
+Please install camera driver first
+<br/>
+Attention : <span data-darkreader-inline-color="" style="color: rgb(205, 0, 0); --darkreader-inline-color: #ff3d3d;">can only be executed once command to setup camera </span>
+<br/>
+Then system will reboot
+<br/>
+<pre>
+$ cd /usr/local/bin/approcam
+$ sudo ./set_approcam.sh
 </pre>
-<br/> [Software flow control]<br/> <br/> COM1_SW1/COM2_SW1&nbsp;ON-ON-OFF-OFF<br/> COM2&nbsp;-> COM1<br/> UART0_RTS (103)&nbsp;: gpio-482 (PX.06)
+Check Video channel "video0" "video1"
-<pre>echo 482 > /sys/class/gpio/export
+<pre>
-echo out > /sys/class/gpio/PX.06/direction
+$ ls /dev/video*
-stty -F /dev/ttyTHS1 speed 115200
-stty -F /dev/ttyTHS0 speed 115200
-cat /dev/ttyTHS1 &
-echo 1 > /sys/class/gpio/PX.06/value
-echo "1234" > /dev/ttyTHS0
-echo 0 > /sys/class/gpio/PX.06/value
 </pre>
+Preview command
-COM1&nbsp;-> COM2<br/> UART1_RTS (207)&nbsp;: gpio-447 (PR.04)
+<pre>
-<pre>echo 447 > /sys/class/gpio/export
+$ cd /home/ubuntu
-echo out > /sys/class/gpio/PR.04/direction
+$ sudo ./enable-approcamera-4k.sh
-stty -F /dev/ttyTHS1 speed 115200
-stty -F /dev/ttyTHS0 speed 115200
-cat /dev/ttyTHS0 &
-echo 1 > /sys/class/gpio/PR.04/value
-echo "1234" > /dev/ttyTHS1
-echo 0 > /sys/class/gpio/PR.04/value
 </pre>
-<font color="#0070c0">Orin-Nano</font> COM1: ttyTHS1 , COM2: ttyTHS2 <br/>
 == Reference ==
+[[DS-015|DS-015]]
-'''JP 4.5.1 / JP 4.6.1'''<br/> [[AIR-020-RS-485|AIR-020-RS-485]]<br/> [[:File:AIR-020-nVidia_GPIO.docx|Calculate GPIO value from pin number]]
-[[Category:Pages with broken file links]]