What is the best way to communicate with a remote device using Modbus over TCPIP via Bluetooth BLE in iOS? Has anyone experienced this yet? As there is almost to no information available on the internet.
Thanks
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I am doing my FYP and for this I need some information:
Is it possible to connect a mobile with a LoRa Network via cellular SIM?
Actually, I want to build a mobile software that will operate with a local LoRa network, and the user can connect to the network using this app via cellular network.
No, LTE/GSM/EDGE/Mobile network is a different transmission method than LoRa and thus can not connect to LoRaWAN networks.
No I don't think you can . But I think you need another module to include in your project to handle the SIM part and that way you can switch between the Lora and SIM
I used the "Nodemcu Module v3" and it supports wifi based internet connection only.
I always start with a wifi initiation steps (By Lua Scripting) to connect my "Nodemcu" board with internet and After making the wifi connection I am sure that my device has access to internet (Though my Wifi router has internet connection) and I can do any internet based communication.
But how can I teach my "ttgo t call esp32 sim800L" board to use the Sim card data?
Is there any steps for that or it connects to internet automatically on insertion of sim card?
Please Guide me to start work on it.
Thank You
I want to create an iOS app to connect my Wifi OBD 2 to the iPhone. But i have no idea on how to do the peer connection with swift 2. I have the OBD doc to communicate with it (https://www.elmelectronics.com/wp-content/uploads/2016/07/ELM327DS.pdf - page 30).
I tried to search the same thing on android and windows but the problem is my knowledge on peer to peer iOS communication.
I see a lot of iOS app for OBD protocol on app store, I'm sure that anybody can help me !
Thank you !
You don't need to know about real wifi peer2peer communication. Once you attached your phone to the wifi network created by the obd2 wifi adapter, you will be able to establish a good old TCP-connection to it. By default most wifi adapters listen at 192.168.0.10:35000 for incoming connections.
After establishing the TCP connection you can communicate via AT and PIDs by writing/reading to/from the socket. The actual protocol is described in ELM327 manual and the ISO/SAE standard documents.
I want to send UDP packages in a local network using GCDAsyncUdpSocket.
My fear is that at some point UDP packages will be sent via LTE because of the newly introduced "WiFi assist" from iOS 9.
Is there some way I can pretend iOS 9 from passing my traffic to cellular network, and instead require it to always use WiFi?
Thanks a lot for any ideas!
I think you can use "Reachability" to detect if the phone is connected to a wi-fi or to cellular data and then avoid to send message or manage the that particular condition. You can also ask to the user to disable the wi-fi assistant with a popup just to be sure to avoi the problem.
If I have an iOS client and an embedded device that I want to communicate between the two with a WiFi connection using UDP, do I need to write a server (python or something) to facilitate the connection? I am trying to look online but there are a lot of ambigious articles.
Thanks
You'll have to write a server application for the device (iOS or embedded) that will be listening for data.
However, for a simple, single-client UDP connection, your server is basically just a UDP socket, which you bind to the port you want to use - and then start listening for data on. You don't need any connection-handling as UDP is connectionless.
On your client, you just send data to the IP and port of your server, and that's it.
I've done this myself, connecting my iPod Touch to a small ITX computer (running WinXP), to control a small mobile robot over WiFi.