Open main menu

DAVE Developer's Wiki β

Difference between revisions of "DESK-MX6-L/Peripherals/USB Host"

< DESK-MX6-L
(Created page with "{{subst:Peripheral | nome-som=AXEL Lite | nome-peripheral = USB Host }}")
 
m (U0007 moved page DESK-MX6-L/Pheripherals/USB Host to DESK-MX6-L/Peripherals/USB Host without leaving a redirect)
 
(10 intermediate revisions by 3 users not shown)
Line 1: Line 1:
−
<section begin=History/>
+
<section begin="History" />
 
{| style="border-collapse:collapse; "
 
{| style="border-collapse:collapse; "
−
!colspan="4" style="width:100%; text-align:left"; border-bottom:solid 2px #ededed"|History
+
! colspan="4" style="width:100%; text-align:left" ; border-bottom:solid 2px #ededed" |History
 
|-  
 
|-  
−
!style="border-left:solid 2px #73B2C7; border-right:solid 2px #73B2C7;border-top:solid 2px #73B2C7; border-bottom:solid 2px #73B2C7; background-color:#73B2C7; padding:5px; color:white"|Version
+
! style="border-left:solid 2px #73B2C7; border-right:solid 2px #73B2C7;border-top:solid 2px #73B2C7; border-bottom:solid 2px #73B2C7; background-color:#73B2C7; padding:5px; color:white" |Issue Date
−
!style="border-left:solid 2px #73B2C7; border-right:solid 2px #73B2C7;border-top:solid 2px #73B2C7; border-bottom:solid 2px #73B2C7; background-color:#73B2C7; padding:5px; color:white"|Issue Date
+
! style="border-left:solid 2px #73B2C7; border-right:solid 2px #73B2C7;border-top:solid 2px #73B2C7; border-bottom:solid 2px #73B2C7; background-color:#73B2C7; padding:5px; color:white" |Notes
−
!style="border-left:solid 2px #73B2C7; border-right:solid 2px #73B2C7;border-top:solid 2px #73B2C7; border-bottom:solid 2px #73B2C7; background-color:#73B2C7; padding:5px; color:white"|Notes
 
 
|-
 
|-
−
|style="border-left:solid 2px #73B2C7; border-right:solid 2px #73B2C7;border-top:solid 2px #73B2C7; border-bottom:solid 2px #73B2C7; background-color:#edf8fb; padding:5px; color:#000000"|X.Y.Z
+
| style="border-left:solid 2px #73B2C7; border-right:solid 2px #73B2C7;border-top:solid 2px #73B2C7; border-bottom:solid 2px #73B2C7; background-color:#edf8fb; padding:5px; color:#000000" |{{oldid|14091|2021/07/16}}
−
|style="border-left:solid 2px #73B2C7; border-right:solid 2px #73B2C7;border-top:solid 2px #73B2C7; border-bottom:solid 2px #73B2C7; background-color:#edf8fb; padding:5px; color:#000000"|Month Year
+
| style="border-left:solid 2px #73B2C7; border-right:solid 2px #73B2C7;border-top:solid 2px #73B2C7; border-bottom:solid 2px #73B2C7; background-color:#edf8fb; padding:5px; color:#000000" |First DESK-MX6-L release
−
|style="border-left:solid 2px #73B2C7; border-right:solid 2px #73B2C7;border-top:solid 2px #73B2C7; border-bottom:solid 2px #73B2C7; background-color:#edf8fb; padding:5px; color:#000000"|TBD
 
 
|-
 
|-
 +
| style="border-left:solid 2px #73B2C7; border-right:solid 2px #73B2C7;border-top:solid 2px #73B2C7; border-bottom:solid 2px #73B2C7; background-color:#edf8fb; padding:5px; color:#000000" |{{oldid|17002|2022/03/03}}
 +
| style="border-left:solid 2px #73B2C7; border-right:solid 2px #73B2C7;border-top:solid 2px #73B2C7; border-bottom:solid 2px #73B2C7; background-color:#edf8fb; padding:5px; color:#000000" |DESK-MX6-L 3.0.0 release
 
|-
 
|-
−
|style="border-left:solid 2px #73B2C7; border-right:solid 2px #73B2C7;border-top:solid 2px #73B2C7; border-bottom:solid 2px #73B2C7; background-color:#edf8fb; padding:5px; color:#000000"|[TBD_link X.Y.Z]
+
! style="border-left:solid 2px #73B2C7; border-right:solid 2px #73B2C7;border-top:solid 2px #73B2C7; border-bottom:solid 2px #73B2C7; background-color:#ededed; padding:5px; color:#000000" |2023/04/11
−
|style="border-left:solid 2px #73B2C7; border-right:solid 2px #73B2C7;border-top:solid 2px #73B2C7; border-bottom:solid 2px #73B2C7; background-color:#edf8fb; padding:5px; color:#000000"|Month Year
+
! style="border-left:solid 2px #73B2C7; border-right:solid 2px #73B2C7;border-top:solid 2px #73B2C7; border-bottom:solid 2px #73B2C7; background-color:#ededed; padding:5px; color:#000000" |DESK-MX6-L 4.0.0 release
−
|style="border-left:solid 2px #73B2C7; border-right:solid 2px #73B2C7;border-top:solid 2px #73B2C7; border-bottom:solid 2px #73B2C7; background-color:#edf8fb; padding:5px; color:#000000"|TBD
 
−
|-
 
−
|style="border-left:solid 2px #73B2C7; border-right:solid 2px #73B2C7;border-top:solid 2px #73B2C7; border-bottom:solid 2px #73B2C7; background-color:#edf8fb; padding:5px; color:#000000"|...
 
−
|style="border-left:solid 2px #73B2C7; border-right:solid 2px #73B2C7;border-top:solid 2px #73B2C7; border-bottom:solid 2px #73B2C7; background-color:#edf8fb; padding:5px; color:#000000"|...
 
−
|style="border-left:solid 2px #73B2C7; border-right:solid 2px #73B2C7;border-top:solid 2px #73B2C7; border-bottom:solid 2px #73B2C7; background-color:#edf8fb; padding:5px; color:#000000"|...
 
 
|-
 
|-
 
|}
 
|}
−
<section end=History/>
+
<section end="History" />
−
<section begin=Body/>
+
<section begin="Body" />
  
 
==Peripheral USB Host ==
 
==Peripheral USB Host ==
  
−
''TBD: sostituire tutti i dump con le informazioni sull'uso della periferica''
+
The USB Host port requires to configure the USB VBUS regulator and the '''gpio''' used for enabling the 5V USB power switch.
  
 
=== Device tree configuration ===
 
=== Device tree configuration ===
 +
 
Here below an example of device tree configuration used on standard DAVE's kit for the AXEL Lite SOM:
 
Here below an example of device tree configuration used on standard DAVE's kit for the AXEL Lite SOM:
  
−
From <code>''carrier.dts''</code>:
+
From <code>imx6qdl-axelcommon.dtsi</code>:
  
 
<pre>
 
<pre>
−
&can1 {
+
    regulators {
−
    pinctrl-names = "default";
+
        compatible = "simple-bus";
−
     pinctrl-0 = <&pinctrl_flexcan1_axel>;
+
 +
        reg_usb_h1_vbus: usb_h1_vbus {
 +
            compatible = "regulator-fixed";
 +
            regulator-name = "usb_h1_vbus";
 +
            regulator-min-microvolt = <5000000>;
 +
            regulator-max-microvolt = <5000000>;
 +
            gpio = <&gpio2 11 0>;
 +
            enable-active-high;
 +
        };
 +
    };
 +
...
 +
...
 +
&usbh1 {
 +
     vbus-supply = <&reg_usb_h1_vbus>;
 
     status = "okay";
 
     status = "okay";
 
};
 
};
−
</pre>
 
−
 
−
From <code>''carrier-common.dtsi''</code>:
 
−
 
−
<pre>
 
−
    can1 {
 
−
        pinctrl_flexcan1_axel: flexcan1axelgrp-1 {
 
−
            fsl,pins = <
 
−
                MX6QDL_PAD_GPIO_7__FLEXCAN1_TX 0x80000000
 
−
                MX6QDL_PAD_GPIO_8__FLEXCAN1_RX 0x80000000
 
−
            >;
 
−
        };
 
−
    };
 
 
</pre>
 
</pre>
  
Line 57: Line 53:
 
====Linux messages at boot time====
 
====Linux messages at boot time====
  
−
<pre class="workstation-terminal">
+
When a USB peripheral is inserted, in the following example a memory mass storage device, the kernel recognizes the device (i.e. xlass, vendor id, product id, etc.)
−
...
 
−
...
 
−
[    1.807495] flexcan 2090000.flexcan: 2090000.flexcan supply xceiver not found, using dummy regulator
 
−
[    1.817366] flexcan 2090000.flexcan: device registered (reg_base=c0a30000, irq=31)
 
−
...
 
−
...
 
−
[    3.952659] can: controller area network core (rev 20170425 abi 9)
 
−
[    3.963413] can: raw protocol (rev 20170425)
 
−
[    3.967717] can: broadcast manager protocol (rev 20170425 t)
 
−
[    3.973397] can: netlink gateway (rev 20170425) max_hops=1
 
−
</pre>
 
  
−
====Enable the interface and check status====
 
 
<pre class="workstation-terminal">
 
<pre class="workstation-terminal">
−
root@imx6qxelk:~# ip link set can0 type can bitrate 500000
+
[  949.174288] usb 1-1: New USB device found, idVendor=13fe, idProduct=6700, bcdDevice= 1.10
−
root@imx6qxelk:~# ifconfig can0 up
+
[  949.182598] usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
−
root@imx6qxelk:~# ifconfig can0
+
[  949.192339] usb 1-1: Product: USB DISK 3.0
−
can0      Link encap:UNSPEC HWaddr 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00
+
[  949.196474] usb 1-1: Manufacturer: Wilk
−
          UP RUNNING NOARP MTU:16  Metric:1
+
[ 949.202608] usb 1-1: SerialNumber: 07012533C2BE5935
−
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
+
[  949.216478] usb-storage 1-1:1.0: USB Mass Storage device detected
−
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
+
[ 949.234501] scsi host0: usb-storage 1-1:1.0
−
          collisions:0 txqueuelen:10
+
[  950.319317] scsi 0:0:0:0: Direct-Access    Wilk    USB DISK 3.0     PMAP PQ: 0 ANSI: 6
−
          RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
+
[  950.334575] sd 0:0:0:0: [sda] 60628992 512-byte logical blocks: (31.0 GB/28.9 GiB)
−
          Interrupt:31
+
[  950.343311] sd 0:0:0:0: [sda] Write Protect is off
−
 
+
[  950.357023] sd 0:0:0:0: [sda] Write cache: disabled, read cache: enabled, doesn't support DPO or FUA
−
root@imx6qxelk:~#
+
[  950.421972] sda: sda1 sda2
 +
[  950.433822] sd 0:0:0:0: [sda] Attached SCSI removable disk
 
</pre>
 
</pre>
  
−
==== Usage with [https://github.com/linux-can/can-utils can-utils] ====
+
=== Additional information ===
−
 
+
If the root file system configuration does not automatically mount the partition, it is possible to mount the device using the following command:
−
''TBD: reference verso eventuali informazioni sul web''
 
  
 
<pre class="workstation-terminal">
 
<pre class="workstation-terminal">
−
root@imx6qxelk:~# ip link set can0 type can bitrate 500000 triple-sampling on
+
root@desk-mx6:~# mkdir -p /mnt/usb
−
root@imx6qxelk:~# ifconfig can0 up
+
root@desk-mx6:~# mount /dev/sda1 /mnt/usb/
−
root@imx6qxelk:~# cansend can0 128#1122334455667788
+
root@desk-mx6:~# ls -la /mnt/usb/
−
root@imx6qxelk:~# candump can0
+
total 24
−
  can0 128  [8] 11 22 33 44 55 66 77 88
+
drwxrwx--- 3 root disk    16384 Jan  1  1970 .
−
root@imx6qxelk:~#
+
drwxr-xr-x 6 root root     4096 Apr  4 07:11 ..
 +
drwxrwx--- 3 root disk    2048 Apr 5 2011 EFI
 +
-rwxrwx--- 1 root disk 10193056 Apr  5  2011 uImage
 
</pre>
 
</pre>
  
−
=== Additional information ===
+
<section end="Body" />
−
Each CAN port appears like a networking interface in the form <code>canX</code> where <b><i>X</i></b> is the port number.
 
−
 
 
−
Information about programming the CAN socket interface is given in the kernel tree under ''Documentation/networking/can.txt''
 
−
<section end=Body/>
 
  
 
----
 
----
  
 
[[Category:AXEL Lite]]
 
[[Category:AXEL Lite]]

Latest revision as of 10:43, 13 May 2024

HOME SOMs SBCs ToloMEO Embedded Assistant Sale-tag.pngGET A QUOTE Customer-service.pngONLINE HELPDESK
Roadmap IoT Services ML/AI services Embedded Design Services
History
Issue Date Notes

2021/07/16

First DESK-MX6-L release

2022/03/03

DESK-MX6-L 3.0.0 release
2023/04/11 DESK-MX6-L 4.0.0 release


Contents

Peripheral USB HostEdit

The USB Host port requires to configure the USB VBUS regulator and the gpio used for enabling the 5V USB power switch.

Device tree configurationEdit

Here below an example of device tree configuration used on standard DAVE's kit for the AXEL Lite SOM:

From imx6qdl-axelcommon.dtsi: 

    regulators {
        compatible = "simple-bus";
 
        reg_usb_h1_vbus: usb_h1_vbus {
            compatible = "regulator-fixed";
            regulator-name = "usb_h1_vbus";
            regulator-min-microvolt = <5000000>;
            regulator-max-microvolt = <5000000>;
            gpio = <&gpio2 11 0>;
            enable-active-high;
        };
    };
...
...
&usbh1 {
    vbus-supply = <&reg_usb_h1_vbus>;
    status = "okay";
};

Accessing the peripheralEdit

Linux messages at boot timeEdit

When a USB peripheral is inserted, in the following example a memory mass storage device, the kernel recognizes the device (i.e. xlass, vendor id, product id, etc.) 

[  949.174288] usb 1-1: New USB device found, idVendor=13fe, idProduct=6700, bcdDevice= 1.10
[  949.182598] usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[  949.192339] usb 1-1: Product: USB DISK 3.0
[  949.196474] usb 1-1: Manufacturer: Wilk
[  949.202608] usb 1-1: SerialNumber: 07012533C2BE5935
[  949.216478] usb-storage 1-1:1.0: USB Mass Storage device detected
[  949.234501] scsi host0: usb-storage 1-1:1.0
[  950.319317] scsi 0:0:0:0: Direct-Access     Wilk     USB DISK 3.0     PMAP PQ: 0 ANSI: 6
[  950.334575] sd 0:0:0:0: [sda] 60628992 512-byte logical blocks: (31.0 GB/28.9 GiB)
[  950.343311] sd 0:0:0:0: [sda] Write Protect is off
[  950.357023] sd 0:0:0:0: [sda] Write cache: disabled, read cache: enabled, doesn't support DPO or FUA
[  950.421972]  sda: sda1 sda2
[  950.433822] sd 0:0:0:0: [sda] Attached SCSI removable disk

Additional informationEdit

If the root file system configuration does not automatically mount the partition, it is possible to mount the device using the following command: 

root@desk-mx6:~# mkdir -p /mnt/usb
root@desk-mx6:~# mount /dev/sda1 /mnt/usb/
root@desk-mx6:~# ls -la /mnt/usb/
total 24
drwxrwx--- 3 root disk    16384 Jan  1  1970 .
drwxr-xr-x 6 root root     4096 Apr  4 07:11 ..
drwxrwx--- 3 root disk     2048 Apr  5  2011 EFI
-rwxrwx--- 1 root disk 10193056 Apr  5  2011 uImage


HOME SOMs SBCs ToloMEO Embedded Assistant Sale-tag.pngGET A QUOTE Customer-service.pngONLINE HELPDESK
Roadmap IoT Services ML/AI services Embedded Design Services
Retrieved from "https://wiki.dave.eu/index.php?title=DESK-MX6-L/Peripherals/USB_Host&oldid=20391"