Todd Stellanova tstellanova

## jetson_kernel_install.md

      
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              February 12, 2016 14:04
            
              
                Howto install grinch alternative kernel on NVIDIA Jetson TK1 (supports many wifi devices, USB3 by default)
              
          
    For this process you will need:

A flashing computer, preferably an Ubuntu Linux machine (or VM)
Micro USB cable, same as the one provided with the Jetson TK1 kit
Jetson TK1 and power supply
Optional: DB9 null modem cable


Download NVIDIA Linux4Tegra (L4T) Board Support Package (BSP) and Sample Root Filesystem  from NVIDIA


wget https://developer.nvidia.com/sites/default/files/akamai/mobile/files/L4T/Tegra124_Linux_R19.3.0_armhf.tbz2


## jetson_wlan0_config.md

      
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              April 14, 2018 01:44
            
              
                Setting up wlan0 wifi on Jetson TK1
              
          
    Edit /etc/network/interfaces :
# interfaces(5) file used by ifup(8) and ifdown(8)
# Include files from /etc/network/interfaces.d:
source-directory /etc/network/interfaces.d

auto wlan0
iface wlan0 inet dhcp
 wireless-essid MyHomeWifi


## howto_sdcard_jetson.md

      
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              August 29, 2015 14:05
            
              
                Howto mount sdcard on Jetson TK1
              
          
sudo mkdir -p /mnt/sdcard
sudo mount  /dev/mmcblk1p1 /mnt/sdcard

This will only allow root user to write. To allow sudoers to write, edit /etc/fstab:


## jetson_hdmi_config.md

      
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                tstellanova
                / jetson_hdmi_config.md
            
            
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              May 26, 2021 10:30
            
              
                Enable and Disable HDMI display on Jetson TK1
              
          
    All operations as root:
turn off HDMI:

echo -1 > /sys/kernel/debug/tegra_hdmi/hotplug
echo 4 > /sys/class/graphics/fb0/blank

turn on HDMI:


## curf_gpu.cpp
#include <SDKDDKVer.h>
#include <Windows.h>

#pragma warning(disable:4819)
#pragma warning(disable:4996)

// for OpenCV2
#include "opencv2/imgproc/imgproc.hpp"
#include "opencv2/objdetect/objdetect.hpp"
#include "opencv2/gpu/gpu.hpp"

## jetson_tk1_dev_setup.md

      
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                / jetson_tk1_dev_setup.md
            
            
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              November 21, 2015 05:01
            
              
                Jetson TK1 development environment
              
          
    Before you begin, ensure that you've setup network access, either with ethernet or wlan.
Setup timezone

 sudo dpkg-reconfigure tzdata
Typically we use "US/Pacific-New"
Mount sdcard


## reboot_fails_jetston.md

      
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                tstellanova
                / reboot_fails_jetston.md
            
            
              Created
              September 5, 2014 00:31
            
          
    [ 3737.049861] Unhandled fault: imprecise external abort (0x1406) at 0x00000000
[ 3737.057007] Internal error: : 1406 [#1] PREEMPT SMP ARM
[ 3737.062292] Modules linked in: dm_crypt ath9k ath9k_common ath9k_hw rfcomm bnep rtc_as3722 ath bluetooth mac80211 parport_pc parport cfg80211 rfkill nvhost_vi
[ 3737.076803] CPU: 0 PID: 622 Comm: NetworkManager Not tainted 3.10.24-grinch-19.3.6 #5
[ 3737.084725] task: eb0905c0 ti: edc98000 task.ti: edc98000
[ 3737.090190] PC is at ath9k_ioread32+0x38/0x78 [ath9k]
[ 3737.095303] LR is at ath9k_hw_wait+0x74/0xa4 [ath9k_hw]
[ 3737.100588] pc : [<bea0ffb8>]    lr : [<be9a8734>]    psr: 80070093


## jetson_set_gpu_clock.sh
#!/bin/bash
#
# Lock GPU and MEM clocks to max MHz
#
# - benchmarking shows there is no need to override the MEM clock
#
echo
echo "Current GPU:" $[ $(</sys/kernel/debug/clock/gbus/rate) / 1000000] MHz
echo
echo Locking GPU clock to max MHz for debugging porpoises...

## jetson_setup_packages.sh
#!/bin/bash
#

# install all essential dev packages
sudo apt-get update
sudo apt-get install -y build-essential locate keychain git cmake cmake-curses-gui libv4l-dev v4l-utils python-numpy python-scipy  libavformat-dev libpng-dev libjpeg-dev libtiff-dev libswscale-dev libeigen3-dev  libtbb-dev libgtk2.0-dev

sudo dpkg -i /mnt/sdcard/cuda-repo-l4t-r19.2_6.0-42_armhf.deb
# make apt aware of the package you downloaded
sudo apt-get update

## Jetson_tk1_setup2.md

      
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                tstellanova
                / Jetson_tk1_setup2.md
            
            
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              August 29, 2015 14:06
            
              
                Setup Jetson tk1 -- new instructions
              
          
    Before you begin, ensure that you've setup network access, either with ethernet or wlan.
Setup timezone

 sudo dpkg-reconfigure tzdata
Typically we use "US/Pacific-New"
Mount sdcard
	#include <SDKDDKVer.h>
	#include <Windows.h>

	#pragma warning(disable:4819)
	#pragma warning(disable:4996)

	// for OpenCV2
	#include "opencv2/imgproc/imgproc.hpp"
	#include "opencv2/objdetect/objdetect.hpp"
	#include "opencv2/gpu/gpu.hpp"
	#!/bin/bash
	#
	# Lock GPU and MEM clocks to max MHz
	#
	# - benchmarking shows there is no need to override the MEM clock
	#
	echo
	echo "Current GPU:" $[ $(</sys/kernel/debug/clock/gbus/rate) / 1000000] MHz
	echo
	echo Locking GPU clock to max MHz for debugging porpoises...
	#!/bin/bash
	#

	# install all essential dev packages
	sudo apt-get update
	sudo apt-get install -y build-essential locate keychain git cmake cmake-curses-gui libv4l-dev v4l-utils python-numpy python-scipy libavformat-dev libpng-dev libjpeg-dev libtiff-dev libswscale-dev libeigen3-dev libtbb-dev libgtk2.0-dev

	sudo dpkg -i /mnt/sdcard/cuda-repo-l4t-r19.2_6.0-42_armhf.deb
	# make apt aware of the package you downloaded
	sudo apt-get update