i. Mx8mp development board porting USBWiFi rtl8192eu driver

stay Feiling OKMX8MP-C The self built... Is transplanted on the development board Debian After the system , Found the original card WiFi The module cannot be used , It's no use adding support items to the kernel , Then communicate with Wang Gong, the technical support engineer of Feiling , Understand the need to /lib/modules The entire drive folder can only be copied and replaced , So I put it on hold .

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WiFi programme You can use what is already very mature in the market RTL8192EU programme , One USB WiFi modular , You can buy it for tens of dollars , You can also download all kinds of Linux kernel Source code of version adaptation .

download RTL8192EU Source code , open Makefile file ：

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modify I386_PC Option architecture and kernel source location ：

ifeq ($(CONFIG_PLATFORM_I386_PC), y)

EXTRA_CFLAGS += -DCONFIG_LITTLE_ENDIAN

EXTRA_CFLAGS += -DCONFIG_IOCTL_CFG80211 - DRTW_USE_CFG80211_STA_EVENT

SUBARCH := $(shell uname -m | sed -e s/i.86/i386/)

ARCH ?= ARM64

CROSS_COMPILE ?=

KVER := $(shell uname -r)

KSRC := /home/OK8MP-linux-kernel/

MODDESTDIR := /home/OK8MP-linux- kernel/drivers/net/wireless/

INSTALL_PREFIX :=

STAGINGMODDIR := /home/OK8MP-linux- kernel/drivers/staging

endif

Compile the generated 8192eu.ko file , direct insmod that will do . But only this one ko Documents are not enough , Because of this ko The driver will also call /lib/firmware/rtlwifi Firmware file under , be known as rtl8192eu_nic.bin, You must have this file , Otherwise, the driver cannot be loaded normally ：

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After loading successfully , Use ifconfig command You can view the correctly loaded network card device ：

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And then use networkmanager Software can manage connections WiFi hotspot ：

nmcli dev wifi connect "xxx" password "xxx"

stay xxx Fill in the hotspot name and password in the . Then it starts from Startup to load WiFi drive , This is very simple , stay /etc/ The next new one is called autorun.sh Of shell Script ：

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#!/bin/sh

insmod /home/rtl8192eu-linux-driver-realtek-4.4.x/8192eu.ko

And then in /usr/lib/systemd/system/ New under the directory autorun.service file ：

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[Unit]

Description=autorun

After=basic.service X.service thermal-zone-init.service

[Service]

ExecStart=/etc/autorun.sh

[Install]

WantedBy=multi-user.target

Enter the command ：

systemctl -f enable /lib/systemd/system/autorun.service

chmod 777 /etc/autorun.sh

In this way, it can run automatically when starting up insmod command .

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