odroid_go_advance:application_note:sdio_wifi

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How to configure built-in WIFI module

This wiki page will be updated soon!!! (2020.05.21)

This wiki page describes wifi setting instructions and available with OGA HW Rev 1.1 only.

  1. WIFI KEY Features
  2. Configuring WIFI station mode (1) - using [Configuration] Menu
  3. Configuring WIFI station mode (2) - using command line
  4. Configuring WIFI AP mode
  5. Checking basic connection
  6. Configuring Suspend/Resume
  • ESP-WROOM-S2 that integrates ESP8266EX
  • WIFI Protocol : 802.11 b/g/n
  • Frequency Range : 2.4 GHz ~ 2.5 GHz (2400 MHz ~ 2483.5 MHz)
  • SDIO interface up to 50 MHz, SDIO v2.0

You can activate WIFI connection with built-in WIFI module ('wlan0' node) using [CONFIGURATION] menu of Emulationstation.
Please refer to this wiki page.
-> Setting Network

Or you can establish WIFI network using the following instuctions.

First, check esp8089 module is loaded normally.

target
$ lsmod
Module                  Size  Used by
esp8089               266240  0
sch_fq_codel           20480  5
ip_tables              24576  0
x_tables               32768  1 ip_tables
ipv6                  372736  24

Turn on wifi radio.

target
# nmcli radio wifi on

You can get all available WIFI list as following.

target
$ nmcli dev wifi list
IN-USE  SSID            MODE   CHAN  RATE        SIGNAL  BARS  SECURITY  
        SSID_1          Infra  1     130 Mbit/s  92      ▂▄▆█  WPA1 WPA2 
        SSID_2          Infra  11    130 Mbit/s  92      ▂▄▆█  WPA2 802.1
        SSID_3          Infra  11    130 Mbit/s  92      ▂▄▆█  WPA2     

Enter SSID and password data.

target
$ nmcli dev wifi con 'SSID_1' password 'password_of_ssid1'

If there is no issue during network establishment, you will get IP information.

target
$ ip addr
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host 
       valid_lft forever preferred_lft forever
2: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000
    link/ether ab:cd:ef:12:34:56 brd ff:ff:ff:ff:ff:ff
    inet 192.168.0.5/24 brd 192.168.0.255 scope global dynamic noprefixroute wlan0
       valid_lft 6830sec preferred_lft 6830sec
    inet6 fe80::1234:1234:1234:1234/64 scope link noprefixroute 
       valid_lft forever preferred_lft forever

Then, check ping operation.

target
$ ping google.com

1. Update & Upgrade

target
$ sudo apt update -y
$ sudo apt upgrade -y

2. Install Packages

target
$ sudo apt install -y dhcpcd5
$ sudo apt install -y hostapd dnsmasq

Since the configurations are not ready yet, so display related services now.

target
$ sudo systemctl disable hostapd
$ sudo systemctl disable dnsmasq

3. Setup (1) - Configuration a static IP

To configure the static IP address, please edit a dhcpcd configuration file, /etc/dhcpcd.conf.
Go to the end fo this file and add the following lines.
For this example, we will use a static IP, 192.168.4.1.

target
$ vi /etc/dhcpcd.conf
target
interface wlan0
    static ip_address=192.168.4.1/24
    nohook wpa_supplicant

4. Setup (2) : Configuring the access point host software - 'hostapd'

(1) You need to edit the hostapd configuration file in /etc/hostapd.

target
$ vi /etc/hostapd/hostapd.conf
target
interface=wlan0
driver=nl80211
ssid=${NameOfNetwork}
hw_mode=${hw_mode}
channel=7
wmm_enabled=0
macaddr_acl=0
auth_algs=1
ignore_broadcast_ssid=0
wpa=2
wpa_passphrase=${password}
wpa_key_mgmt=WPA-PSK
wpa_pairwise=TKIP
rsn_pairwise=CCMP

ESP8266ex supports 2.4GHz band, so we will set 'hw_mode' ad 'g' for this example.

  • a = IEEE 802.11a (5 GHz)
  • b = IEEE 802.11b (2.4 GHz)
  • g = IEEE 802.11g (2.4 GHz)
  • ad = IEEE 802.11ad (60 GHz)

(2) Then need to tell the system where to find this configuration file.

target
$ vi /etc/default/hostapd
target
# DAEMON_CONF=""
DAEMON_CONF="/etc/hostapd/hostapd.conf"

5. Setup (3) : Configuring DHCP server - 'dnsmasq'

Add the following information in the dnsmasq configuration file, /etc/dnsmasq.conf.

target
$ vi /etc/dnsmasq.conf
target
# If you don't want dnsmasq to read /etc/resolv.conf or any other
# file, getting its servers from this file instead (see below), then
# uncomment this.
no-resolv
 
# If you want dnsmasq to listen for DHCP and DNS requests only on
# specified interfaces (and the loopback) give the name of the
# interface (eg eth0) here.
# Repeat the line for more than one interface.
interface=wlan0
 
# On systems which support it, dnsmasq binds the wildcard address,
# even when it is listening on only some interfaces. It then discards
# requests that it shouldn't reply to. This has the advantage of
# working even when interfaces come and go and change address. If you
# want dnsmasq to really bind only the interfaces it is listening on,
# uncomment this option. About the only time you may need this is when
# running another nameserver on the same machine.
bind-interfaces
 
# Uncomment this to enable the integrated DHCP server, you need
# to supply the range of addresses available for lease and optionally
# a lease time. If you have more than one network, you will need to
# repeat this for each network on which you want to supply DHCP
# service.
dhcp-range=192.168.4.3,192.168.4.20,12h

6. Setup (4) : Configuring network

Create /etc/network/interfaces.
Make sure that 3rd line is blocked using “#”.

target
allow-hotplug wlan0
iface wlan0 inet manual
#    wpa-conf /etc/wpa_supplicant/wpa_supplicant.conf

7. Start services

target
$ systemctl enable dnsmasq
$ systemctl start dnsmasq
 
$ systemctl enable hostapd
$ systemctl start hostapd

mmc1 node

target
$ cat /sys/kernel/debug/mmc1/ios
clock:          50000000 Hz
vdd:            21 (3.3 ~ 3.4 V)
bus mode:       2 (push-pull)
chip select:    0 (don't care)
power mode:     2 (on)
bus width:      2 (4 bits)
timing spec:    2 (sd high-speed)
signal voltage: 0 (3.30 V)
driver type:    0 (driver type B)

sdio id

target
$ cat /sys/bus/sdio/devices/mmc1\:0001\:1/modalias 
sdio:c00v6666d1111

module

target
$ lsmod
Module                  Size  Used by
esp8089               266240  0
sch_fq_codel           20480  5
ip_tables              24576  0
x_tables               32768  1 ip_tables
ipv6                  372736  24

/lib/systemd/system-sleep/sleep

#!/bin/bash

case $1 in
  pre)
       rmmod esp8089
       ;;
  post)
       modprobe -i esp8089
       ;;
esac
target
$ sudo chmod a+x /lib/systemd/system-sleep/sleep
  • odroid_go_advance/application_note/sdio_wifi.1590032465.txt.gz
  • Last modified: 2020/05/21 12:41
  • by joy.cho