Difference between revisions of "DESK-MX6-L/Peripherals/WiFi"
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==Peripheral WiFi == | ==Peripheral WiFi == | ||
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=== Device tree configuration === | === Device tree configuration === | ||
Revision as of 10:55, 13 May 2024
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Contents
Peripheral WiFi[edit | edit source]
Device tree configuration[edit | edit source]
Here below an example of device tree configuration used on standard DAVE's kit for the AXEL Lite SOM:
From carrier.dts:
&can1 {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_flexcan1_axel>;
status = "okay";
};
From carrier-common.dtsi:
can1 {
pinctrl_flexcan1_axel: flexcan1axelgrp-1 {
fsl,pins = <
MX6QDL_PAD_GPIO_7__FLEXCAN1_TX 0x80000000
MX6QDL_PAD_GPIO_8__FLEXCAN1_RX 0x80000000
>;
};
};
Accessing the peripheral[edit | edit source]
Linux messages at boot time[edit | edit source]
... ... [ 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
Enable the interface and check status[edit | edit source]
root@imx6qxelk:~# ip link set can0 type can bitrate 500000
root@imx6qxelk:~# ifconfig can0 up
root@imx6qxelk:~# ifconfig can0
can0 Link encap:UNSPEC HWaddr 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00
UP RUNNING NOARP MTU:16 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:10
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
Interrupt:31
root@imx6qxelk:~#
Usage with can-utils[edit | edit source]
TBD: reference verso eventuali informazioni sul web
root@imx6qxelk:~# ip link set can0 type can bitrate 500000 triple-sampling on root@imx6qxelk:~# ifconfig can0 up root@imx6qxelk:~# cansend can0 128#1122334455667788 root@imx6qxelk:~# candump can0 can0 128 [8] 11 22 33 44 55 66 77 88 root@imx6qxelk:~#
Additional information[edit | edit source]
Each CAN port appears like a networking interface in the form canX where X is the port number.
Information about programming the CAN socket interface is given in the kernel tree under Documentation/networking/can.txt
