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openbci-archive / OpenBCI_Python

The Python software library designed to work with OpenBCI hardware.
MIT License
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stream_data_wifi.py "failed to parse" errors #75

Open sarah-mcl opened 6 years ago

sarah-mcl commented 6 years ago

Apologies in advance if this is not the right way to post such an issue.

When trying to run stream_data_wifi.py, I am able to connect to the board but the packets are garbled, as shown in the output below: Welcome to OpenBCI Native WiFi Shield Driver - Please contribute code! Opened socket on 192.168.1.110:49624 Try to find WiFi shields on your local wireless network Scanning for 5 seconds nearby devices... Found WiFi Shield OpenBCI-4AAD with IP Address 192.168.1.104 Init WiFi connection with IP: 192.168.1.104 Connected to cyton with 8 channels WiFi Shield to Python TCP Socket Established WiFi Shield Instantiated Incoming connection from ('192.168.1.104', 5672) failed to parse: ?D??U??V?͆?? ?????s???F??#??9??k???u?????s???G????????????um?u??T?s,??H?????????Ú?u?????{?sU??I?????P?̍??%?u?%????r???J??{????????f?uO?S??1???K?????????é?u?????j?sE??L?????????å?u?????Y?s;????M??????????Ë?uv?r??8?s? No JSON object could be decoded

I have an OpenBCI Cyton and Wifi Shield, both with up-to-date firmware. Streaming works with the OpenBCI GUI, and I was able to get the js example (getStreaming.js) to work.

I'm running on a Mac so I was unable to install bluepy, but all other requirements are at or above the required versions.

Any assistance would be greatly appreciated.

jfrey-xx commented 6 years ago

Hello,

If the OpenBCI GUI is working then it is probably something wrong with the python script. It will be difficult to debug on my side, without a Wifi Shield. Which version of the scripts are you using, the master branch? @aj-ptw Had been working actively on a "1.0.0" branch, that isthe most up to date version of the code, and you should give it a try if not already.

sarah-mcl commented 6 years ago

I was using the masters branch, but I tried the 1.0.0 branch and it works! I now get output that looks normal:

0 [0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0] 0 [-0.007191427909306039, 0.005549111133707897, -0.0071619683101139435, -0.007198960447187477, -0.1540045474773106, -0.0487470535930459, -0.14287948076480397, -0.012493216990615962] 1 [-0.007196121775641653, 0.0055543190901659835, -0.007166550417727281, -0.007203497851311904, -0.1540087943087571, -0.04875130042449241, -0.14288372759625048, -0.012497620284273658]

I had to modify the init.py file to not include the Ganglion code, because it uses bluepy, but this solves my issue! Thanks!

jfrey-xx commented 6 years ago

Thanks for the feedback... at some point we should merge this branch to master ^^

Using try/catch we should be able to detect the need for Ganglion-related libraries, I will leave the bug report opened as a reminder.