I'm working on a remote app running on Android phones using the Anymote library. It handles channel changing by sending digits to the digital tuner box via the GTV box's IR Blaster. In the case of the Vizio Co-Star, there is no IR blaster, but the user can use the unit's accompanying physical remote as an IR relay to control the TV / Digital tuner / etc. In this case, the volume commands and Guide command are relaying from the remote correctly, but when I try to send channel digits from the app through the Vizio box and physical remote to the cable company's digital tuner, the digits do not send, or the tuner only gets a zero. Does the Vizio's unique setup require a different way of sending the digits from Anymote than other GTV boxes?
Thanks in advance.
M-A Kuttner
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Most electronic home goods today are able to be setup through a webpage to connect the device to a home network. Usually there is some sort of bluetooth or wifi direct finding mode to access the device and then using a webpage or app the device is given the SSID/password for a wifi network and then you're off to the races. What is that tech called? I would like to replicate the setup experience with a generic IoT device running linux. I just don't know what that process is called to start digging into how to do it.
Bluetooth and Wifi-direct specifications are (consumer-usage-wise) public-domain knowledge, just setup a temporary open server and accept any connection after each hard-reset, and do what you have to do like here (BT) and here (Wifi-direct). There are other proprietary technology like TI CC3000, which usually relates to specific hardware solutions.
Are there any USB devices that can be connected with a Linux Softphone?
These USB phones are enumerating as USB composite device: sound device and some control device, usually custom HID.
Audio part should work with virtually any softphone (e.g. command line baresip or pjsua). One I have (EX-03) has not the best sound quality as it supports only 8kHz sampling, but in general they should be fine for telephone calls.
Control part (receiving events from keybord, using ring speaker or display if present) may be tricky to handle as it may be impossible to find any documentation. If you are lucky you may find other software (e.g. skype control software included on CD) that works with this particular USB phone and then use USB sniffer to analyze packets / protocol.
I've been trying to figure out how to turn my Raspberry Pi into a USB to Bluetooth serial adapter. I want to be able to send data over Bluetooth to the Pi which has a USB thermal printer registered at /dev/usb/lp0.
Using only standard command line apps such as hciconfig, hcitool, rfcomm, and sdptool I have been able to see the Pi as visible, and pair to it from an Android tablet using a Bluetooth SPP app on the Store. However, the tablet disconnects immediately, and no data is sent. rfcomm listen /dev/rfcomm0 1 also waits for a connection forever.
I think I'm able to achieve what I need without custom code, using solely standard command line apps, but I'm not entirely sure. socat will likely be of use to finally connect the sockets.
Figures that I'd get it right after posting. To anyone else looking to do something similar:
Pair with bluez-simple-agent
Create your serial port channel with sdptool add --channel=x sp
Listen for a connection on that channel with sudo rfcomm listen /dev/rfcomm0 x
Cross the streams with socat /dev/rfcomm0 /dev/usb/lp0
Beautiful. It's all so simple now.
I want to read text message using Matlab as hyperterminal using AT commands and bluetooth as connection medium since I am new in it could somebody suggest that how can I do it.
I am using nokia c2-03 for sending the message but if you suggest any other phone i can that too
I connected my phone through USB, saw the Port name then connected it through matlab using
s=serial('COM1');
and then opened the port
fopen(s)
now I don't know what to do I mean now how can send at command to control the device.
PS I am sure that my device supports serial communication.
I am trying to detect if my iPhone is in the same network as my Raspberry Pi. I would like to execute a script when I am at home and my iPhone's presence is registered in my LAN.
It seems that when the phone is in standby not even the iphone-sync port (6207/tcp) is found. "/usr/bin/nmap -n -sT -p62078 [my phone's local IP]" shows no host. I wonder what else I could scan for. Obviously the phone is online and ready to accept facetime calls (data via 3G is deactivated). Could I accomplish something with avahi which I am using on my Raspberry Pi, or are there other ways.
I've just spent a week beating on this problem so I can refrain from sending SMS home alarms to my wife when she's at work.
Pinging won't work because the iPhone won't respond to ICMP when asleep. Reading the ARP cache won't work because a sleeping iPhone will come and go (check it every 30 seconds for a few minutes).
The only way I have found to 'reliably' determine when my two iPhones are on my local (home) network is to use the PCAP dotnet library to look for any packets originating from either of the phones' MAC addresses. For example, if you run Wireshark with the capture filter
ether src <iphone-mac-address>
you will see a surprising amount of network discovery/announcement traffic from the phone. It still has quiescent states, but so far the longest interval I have seen between captured packets is around 10 minutes. You would have to wait until you have not heard from the phone for some interval (I use 15 minutes) before declaring it not-home.
With this technique you will find a phone quickly when it rejoins the home network, assuming your phone is configured for DHCP. I also use port mirroring on my main Ethernet switch to include traffic from my wireless access points.
I don't have a Raspberry Pi solution for this, because my linux expertise is very limited, but someone else may be able to help you along those lines. I have a Windows Service using the PCAP library and so far it works reliably, with the limitation of waiting 15 minutes before deciding an iPhone has left the network.
* update 2-3-2018 *
I have this detection algorithm down to about 5 minutes, using a combination of ping/arp messages directed to each phone, about once per minute. Seems to work great.
You can find a list of devices on your network by investigating your arp cache.
arp -a
Simply write a bash script to run arp -a at a regular interval, and search for the mac address of your phone.
You could go even further with this and perform different actions depending on what brand of device is connected.
The first 3 hexadecimal digits of a mac address are the vendor id.
Take the following mac address:
00:19:E3:AB:CD:EF
00:19:E3: is one of the registered mac address for apple devices.
By comparing the devices on your network with this list, you could detect when for example a '3com' device, or a 'dell' device attaches to your network.
http://www.coffer.com/mac_find/?string=apple
You can do "arp-scan -l -r10" for that (tested this myself), but the problem is if mobile data enabled the iphone will go and suspend wifi if screen is locked to safe battery. so you need to disable mobile data .. then arp-scan will work.