ARCA-V2

ARCA-V2 Series Wireless Connectivity Hubs

ARCA-V2 systems combine wireless communication (cellular WAN, WiFi/BLE LAN) with a power CPU system (TI BeagleBone compatible) and several wired interfaces such as Ethernet, USB, I2C. It is a multi-function system which can be used as:

• LAN to WAN Router gateway
• Data aggregator from a local network of devices
• Sensor to Cloud Gateway
• Remote access control system for industrial equipment

Software Setup Guide

WiFi & BLE

ARCA-V2 has Realtek RTL8723BU chipset for WiFi+BLE.
RTL8723BU is an 802.11bgn 2.4G single-chip that integrates Wireless LAN (WLAN) and a network USB interface (USB 2.0) controller with integrated Bluetooth 2.1/3.0/4.0 controller.

In ARCA-V2 pre-compiled Yantrr Boot Image the WiFI interface wlan0 is configured in Master Mode i.e. AP/Hotspot mode. The default SSID of ARCA's WiFi hot-spot is its Board Serial Number and the password is yantrrI0T.

Instructions

• For checking RTL8723BU on USB Bus

root@Yantrr:~# lsusb 
Bus 002 Device 003: ID 19d2:ffeb ZTE WCDMA Technologies MSM 
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 003: ID 0bda:b720 Realtek Semiconductor Corp. 
Bus 001 Device 002: ID 0424:2514 Standard Microsystems Corp. USB 2.0 Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

• For checking current configuration of wlan0

root@Yantrr:~# iwconfig wlan0
wlan0     IEEE 802.11bg  ESSID:"20170725001"  Nickname:"<WIFI@REALTEK>"
          Mode:Master  Frequency:2.412 GHz  Access Point: 08:EA:40:F9:8C:36   
          Bit Rate:54 Mb/s   Sensitivity:0/0  
          Retry:off   RTS thr:off   Fragment thr:off
          Encryption key:off
          Power Management:off
          Link Quality=72/100  Signal level=-57 dBm  Noise level=0 dBm
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:0   Missed beacon:0

• For checking BLE interface status

root@Yantrr:~# hcitool dev
Devices:
        hci0    08:EA:40:F9:8C:37

• For scanning nearby BLE devices

root@Yantrr:~# hcitool lescan
LE Scan ...
6C:AA:5C:58:85:2F (unknown)
55:A3:32:7E:99:56 (unknown)
68:9E:19:CB:E6:8F (unknown)

GPS

A particular ARCA-V2 Model can have either embedded GPS or standalone GPS support.

The Embedded GPS is enabled through the Modem module with which the ARCA-V2 is assembled. Since the embedded GPS is handled through Modem, the NMEA-0183 messages are accessed using particular AT command with respect to Modem.

The standalone GPS module is interfaced over UART4 of ARCA-V2. NMEA-0183 messages from the GPS module can be accessed over /dev/ttyO4 port at baud rate of 19200.

USB Ports

ARCA-V2 have Three USB 2.0 HS host ports with type A socket. Each USB port has current rating of 500mA max.