CL-SOM-iMX7: Linux: Debian - Revision history

Igor at 13:32, 6 July 2022

2022-07-06T13:32:44Z

imported>Ilya: /* Touchscreen calibration */

2020-04-21T07:16:19Z

‎Touchscreen calibration

imported>Ilya: /* Touchscreen */

2020-02-13T13:16:41Z

‎Touchscreen

imported>Uri.mashiach at 16:50, 6 January 2019

2019-01-06T16:50:36Z

imported>Uri.mashiach at 15:11, 29 November 2018

2018-11-29T15:11:34Z

Ilya: /* Bluetooth */

2017-08-22T08:44:59Z

‎Bluetooth

Ilya: /* Bluetooth */

2017-06-15T11:24:37Z

‎Bluetooth

Show changes

Grinberg: /* Touchscreen calibration */

2017-05-08T08:59:29Z

‎Touchscreen calibration

Ilya: /* GPIO access */

2017-02-15T11:05:53Z

‎GPIO access

Show changes

Grinberg: /* Overview */

2016-09-06T14:14:25Z

‎Overview

@@ Line 123: / Line 123: @@
 === GPIO access ===
 {{:Transclusion: Debian: GPIO}}
 == See also ==

@@ Line 83: / Line 83: @@
 systemctl stop lightdm
 startx&
 </pre>
 * Run {{cmd|xinput_calibrator}} utility. For proper calibration you are required to touch the touchscreen corners and center in the following order: top-left, top-right, bottom-right, bottom-left, center.
@@ Line 88: / Line 92: @@
 <pre>
 root@cl-rootfs:~# xinput_calibrator
-Setting calibration data: 0, 4095, 0, 4095
+Calibrating standard Xorg driver "ADS7846 Touchscreen"
-Calibrating EVDEV driver for "ADS7846 Touchscreen" id=6
+current calibration values: min_x=0, max_x=65535 and min_y=0, max_y=65535
-        current calibration values (from XInput): min_x=0, max_x=4095 and min_y=0, max_y=4095
+If these values are estimated wrong, either supply it manually with the --precalib option, or run the 'get_precalib.sh' script to automatically get it (through HAL).
 --> Making the calibration permanent <--
-Doing dynamic recalibration:
+copy the snippet below into '/etc/X11/xorg.conf.d/99-calibration.conf' (/usr/share/X11/xorg.conf.d/ in some distro's)
 Section "InputClass"
-         Identifier      "calibration"
+         Identifier          "calibration"
-         MatchProduct    "ADS7846 Touchscreen"
+         MatchProduct  "ADS7846 Touchscreen"
-         Option  "Calibration"   "165 3864 3789 268"
+         Option "MinX"  "2150"
-         Option  "SwapAxes"      "0"
+        Option "MaxX"  "63262"
 EndSection
 </pre>

@@ Line 3: / Line 3: @@
 The CompuLab Linux package for CL-SOM-iMX7 includes ready to run image, Linux kernel configuration and source code patches, and an archive of the root filesystem, used to create the image.
-The default Debian Wheezy Linux image includes more than 400 software packages. Among them:
+The default Debian GNU/Linux 10 image includes more than 400 software packages. Among them:
 * Core system
 * Debian package management system
 * X11 Windowing System
-* Xfce desktop manager
+* Xfce, LXDE, OpenBox desktop managers
 * SSH server and client
 * PulseAudio configuration and usage utilities
@@ Line 16: / Line 16: @@
 This article describes package structure and peripheral device options specific to the CL-SOM-iMX7.
-{{Note|The article uses {{cmd|cl-rootfs}} hostname. A real hostname may be different.}}
+{{Note|The article uses {{cmd|cl-debian}} hostname. A real hostname may be different.}}
 == Using Debian Linux on CL-SOM-iMX7 ==
@@ Line 25: / Line 25: @@
 === Networking ===
 {{:Transclusion: Debian: Networking}}
 === Consoles ===
@@ Line 64: / Line 67: @@
 === Touchscreen ===
 See [[CL-SOM-iMX7:_Linux:_Kernel#Touchscreen_controllers_support|Touchscreen controllers support]] sections for kernel configuration details to enable support for the particular touchscreen.
-The touchscreen driver is modularized if you use default CL-SOM-iMX7 configuration and is not loaded by {{filename|udev}} automatically on Linux boot. Use the following command to load the touchscreen driver module:
+The TI TSC2046 touchscreen driver is built-in the kernel if you use default CL-SOM-iMX7 configuration.
 The X Windows system of CL-SOM-iMX7 uses tslib X server input driver to get the input from the touchscreen.

@@ Line 77: / Line 77: @@
 To calibrate the touchscreen:
-* Run X Server by issuing {{cmd|startx &}} command
+* Select the appropriate resolution for the touchscreen display in [[CL-SOM-iMX7:_U-Boot:_Display_and_console#Setting_the_.22displaytype.22_variable|U-Boot.]]
 * Make sure the touchscreen driver is loaded as described in [[#Touchscreen|Touchscreen]] section
 * Set the {{parameter|DISPLAY}} environment variable:
 <pre> export DISPLAY=:0</pre>
 * Run {{cmd|xinput_calibrator}} utility. For proper calibration you are required to touch the touchscreen corners and center in the following order: top-left, top-right, bottom-right, bottom-left, center.
 * Create a file {{filename|/usr/share/X11/xorg.conf.d/99-calibration.conf}} and paste there a snippet with the calibration results:

@@ Line 1: / Line 1: @@
 == Overview ==
-The example run-time Linux filesystem image for the CompuLab CL-SOM-iMX7 System-on-Module / Computer-on-Module is based on Debian GNU/Linux Sid.
+The example run-time Linux filesystem image for the CompuLab CL-SOM-iMX7 System-on-Module / Computer-on-Module is based on Debian GNU/Linux stretch.
 The CompuLab Linux package for CL-SOM-iMX7 includes ready to run image, Linux kernel configuration and source code patches, and an archive of the root filesystem, used to create the image.
@@ Line 8: / Line 8: @@
 * Debian package management system
 * X11 Windowing System
-* Fluxbox desktop manager
+* Xfce desktop manager
 * SSH server and client
 * PulseAudio configuration and usage utilities
@@ Line 30: / Line 30: @@
 === X Windows system ===
-{{:Transclusion: Debian: X Windows: Fluxbox}}
+{{:Transclusion: Debian: X Windows: Xfce}}
 === Software Management ===

@@ Line 54: / Line 54: @@
 === Bluetooth ===
 {{:Transclusion: Debian: CL-SOM-iMX7: Bluetooth}}
 === Controller–area network (CAN) ===

@@ Line 15: / Line 15: @@
 The [[CL-SOM-iMX7: Linux: Automatic Installation|Automatic Linux installation on CL-SOM-iMX7]] page provides a brief introduction on how to install the run-time Linux image.
 This article describes package structure and peripheral device options specific to the CL-SOM-iMX7.
 == Using Debian Linux on CL-SOM-iMX7 ==
@@ Line 61: / Line 63: @@
 * g_mass_storage
 <pre>
-root@cl-som-imx7-sid:~# modprobe g_mass_storage file=/dev/mmcblk0
+root@cl-rootfs:~# modprobe g_mass_storage file=/dev/mmcblk0
 	Number of LUNs=8
 	Mass Storage Function, version: 2009/09/11
@@ Line 90: / Line 92: @@
 * g_ether
 <pre>
-root@cl-som-imx7-sid:~# modprobe g_ether
+root@cl-rootfs:~# modprobe g_ether
 	using random self ethernet address
 	using random host ethernet address
@@ Line 117: / Line 119: @@
 * g_serial
 <pre>
-root@cl-som-imx7-sid:~# modprobe g_serial
+root@cl-rootfs:~# modprobe g_serial
 	g_serial gadget: Gadget Serial v2.4
 	g_serial gadget: g_serial ready
@@ Line 140: / Line 142: @@
 CL-SOM-iMX7 features two Flexible Controller Area Network (FLEXCAN) modules. Each FLEXCAN implements full CAN protocol version 2.0B and supports both the standard and the extended frame format as well as a programmable data bit rate up to 1Mbit/s.
 {{Note|Please prepare the hardware as described in the [[CL-SOM-iMX7: Evaluation Kit: Hardware Guide#CAN | CL-SOM-iMX7  Evaluation Kit Hardware Guide]] and [[SB-SOM: HOWTO: CAN Connection |  CAN node connection guide]].}}
-* Software to install {{filename|'''can-utils'''}}
+* Software to install {{filename|can-utils}}
 <pre>
-root@cl-som-imx7-sid:~# apt-get install --no-install-recommends can-utils
+root@cl-rootfs:~# apt-get install --no-install-recommends can-utils
 </pre>
@@ Line 150: / Line 152: @@
 * The FLEXCAN driver gets loaded automatically. Make sure it is loaded:
 <pre>
-root@cl-som-imx7-sid:~# lsmod | grep can
+root@cl-rootfs:~# lsmod | grep can
 flexcan                10206  0
 </pre>
 :The FLEXCAN driver can be loaded manually:
 <pre>
-root@cl-som-imx7-sid:~# modprobe flexcan
+root@cl-rootfs:~# modprobe flexcan
 a00000.can supply xceiver not found, using dummy regulator
 flexcan 30a00000.can: device registered (reg_base=f5a00000, irq=277)
@@ Line 163: / Line 165: @@
 * Load Raw CAN protocol module:
 <pre>
-root@cl-som-imx7-sid:~# modprobe can-raw
+root@cl-rootfs:~# modprobe can-raw
 can: raw protocol (rev 20120528)
 </pre>
@@ Line 172: / Line 174: @@
 * To make sure the right {{filename|ip}} utility is used, run:
 <pre>
-root@cl-som-imx7-sid:~# ip -V
+root@cl-rootfs:~# ip -V
 ip utility, iproute2-ss151103
 </pre>
 * Configure the CAN interface bit-rate to 125 Kbits/sec (values of up to 1Mbit/sec are supported):
 <pre>
-root@cl-som-imx7-sid:~# ip link set can0 type can bitrate 125000
+root@cl-rootfs:~# ip link set can0 type can bitrate 125000
 </pre>
 * Enable the CAN interface:
 <pre>
-root@cl-som-imx7-sid:~# ip link set can0 up
+root@cl-rootfs:~# ip link set can0 up
 flexcan 30a00000.can can0: writing ctrl=0x0b312005
 </pre>
@@ Line 190: / Line 192: @@
 * Send standard CAN frame (on the first device):
 <pre>
-root@cl-som-imx7-sid:~# cansend can0 111#1122334455667788
+root@cl-rootfs:~# cansend can0 111#1122334455667788
 </pre>
 * Send extended CAN frame (on the first device):
 <pre>
-root@cl-som-imx7-sid:~# cansend can0 11111111#1122334455667788
+root@cl-rootfs:~# cansend can0 11111111#1122334455667788
 </pre>
 * Dump all received data frames as well as error frames (on the second device):
 <pre>
-root@cl-som-imx7-sid:~# candump any,0:0,#FFFFFFFF
+root@cl-rootfs:~# candump any,0:0,#FFFFFFFF
    can0  111  [8] 11 22 33 44 55 66 77 88
    can0  11111111  [8] 11 22 33 44 55 66 77 88
@@ Line 211: / Line 213: @@
 * For TI TSC2046 touch panel:
 <pre>
-root@cl-som-imx7-sid:~# modprobe ads7846
+root@cl-rootfs:~# modprobe ads7846
 </pre>
@@ Line 220: / Line 222: @@
 To calibrate the touchscreen:
-* Run X Server by issuing {{cmd|'''startx &'''}} command
+* Run X Server by issuing {{cmd|startx &}} command
 * Make sure the touchscreen driver is loaded as described in [[#Touchscreen|Touchscreen]] section
 * Set the {{parameter|DISPLAY}} environment variable:
 <pre> export DISPLAY=:0</pre>
-* Run {{cmd|'''xinput_calibrator'''}} utility. For proper calibration you are required to touch the touchscreen corners and center in the following order: top-left, top-right, bottom-right, bottom-left, center.
+* Run {{cmd|xinput_calibrator}} utility. For proper calibration you are required to touch the touchscreen corners and center in the following order: top-left, top-right, bottom-right, bottom-left, center.
 * Create a file {{filename|/usr/share/X11/xorg.conf.d/99-calibration.conf}} and paste there a snippet with the calibration results:
 <pre>
-root@cl-som-imx7-sid:~# xinput_calibrator
+root@cl-rootfs:~# xinput_calibrator
 Setting calibration data: 0, 4095, 0, 4095
 Calibrating EVDEV driver for "ADS7846 Touchscreen" id=6

@@ Line 13: / Line 13: @@
 * Bluez5 Bluetooth tools and daemons
-The [[CL-SOM-iMX7: Linux: Getting started|Getting started with Linux on CL-SOM-iMX7]] page provides a brief introduction on how to install the run-time Linux image.
+The [[CL-SOM-iMX7: Linux: Automatic Installation|Automatic Linux installation on CL-SOM-iMX7]] page provides a brief introduction on how to install the run-time Linux image.
 This article describes package structure and peripheral device options specific to the CL-SOM-iMX7.
 == Using Debian Linux on CL-SOM-iMX7 ==
@@ Line 702: / Line 700: @@
 * [[CL-SOM-iMX7: Evaluation Kit: Getting Started]]
 * [[CL-SOM-iMX7: Evaluation Kit: Hardware Guide]]
-* [[CL-SOM-iMX7: Linux: Getting started]]
+* [[CL-SOM-iMX7: Linux: Automatic Installation]]
 * [[CL-SOM-iMX7: Linux: Kernel]]
 * [[Linux: Development for ARM modules]]