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OpenIPC Wiki

Table of Content

Wireless settings

Initial configuration

  • The wireless settings are provided based on a uboot variable:
# HI3516EV300 CamHi
+if [ "$1" = "mt7601u-hi3516ev300-camhi" ]; then
	devmem 0x100C0080 32 0x530

Important

Some drivers are not included in the premade OpenIPC firmware binaries, You may have to compile it yourself.

fw_setenv wlandev mt7601u-hi3516ev300-camhi

Enter wireless credentials

  • Credentials can be added with:
fw_setenv wlanssid MySSID
fw_setenv wlanpass MyPassword

Or show the camera a QR code

Firmware that includes the QR scanner (the quirc-openipc package) looks for a code after boot on any camera with wlandev set: 30 attempts, one snapshot each, so at least half a minute and longer on slower cameras. Two kinds of code work:

  • the one OpenIPC's generator makes, which holds two lines, wlanssid=... and wlanpass=...;
  • the one a phone shows when it shares its Wi-Fi network (WIFI:S:...;P:...;;).

Spaces and non-Latin characters in the network name or password are fine.

The camera joins the network before it saves anything, and reports what happened by clicking its IR-cut filter, which you hear as short buzzing tunes:

you hear meaning
two quick rising notes the code was read
a rising four-note run joined and got an address; the settings are saved and the camera reboots
three low buzzes the network refused the password
high-low, twice no network by that name answered
a long tone, then a low one joined, but nothing handed out an address
one low blip that code is not a Wi-Fi code
three falling notes no code was seen; scanning has stopped (power-cycle to try again)

After a failed attempt (wrong password, no such network, no address, or a code that is not a Wi-Fi one) the camera reconnects to any network it already had and keeps looking, so you can fix the code on your phone and show it again. It tries the same code a second time only after 15 seconds. After the three falling notes it has stopped looking; power-cycle it to scan again.

These sounds come with firmware built after OpenIPC/firmware#2496. Older firmware saves whatever code it reads and reboots, with no sound unless the camera has a speaker.

Adopt custom settings

auto wlan0
iface wlan0 inet dhcp
+	pre-up devmem 0x100C0080 32 0x530
+	pre-up echo 7 > /sys/class/gpio/export
+	pre-up echo out > /sys/class/gpio/gpio7/direction
+	pre-up echo 0 > /sys/class/gpio/gpio7/value
+	pre-up modprobe mt7601u
	pre-up wpa_passphrase "SSID" "password" >/tmp/wpa_supplicant.conf
	pre-up sed -i '2i \\tscan_ssid=1' /tmp/wpa_supplicant.conf
	pre-up sleep 3
	pre-up wpa_supplicant -B -D nl80211 -i wlan0 -c/tmp/wpa_supplicant.conf
	post-down killall -q wpa_supplicant
	post-down echo 1 > /sys/class/gpio/gpio7/value
	post-down echo 7 > /sys/class/gpio/unexport
# HI3516EV300 CamHi
if [ "$1" = "mt7601u-hi3516ev300-camhi" ]; then
+	devmem 0x100C0080 32 0x530
+	set_gpio 7 0
+	modprobe mt7601u
	exit 0
fi