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MrYsLab / PyMata

A Python client class library for Interaction with Standard Firmata
GNU Affero General Public License v3.0
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IndexError: list index out of range #38

Closed Stooney8 closed 6 years ago

Stooney8 commented 6 years ago

Exception in thread Thread-2: Traceback (most recent call last): File "/usr/lib/python2.7/threading.py", line 801, in __bootstrap_inner self.run() File "/usr/local/lib/python2.7/dist-packages/PyMata/pymata_command_handler.py", line 858, in run method(command_data) File "/usr/local/lib/python2.7/dist-packages/PyMata/pymata_command_handler.py", line 402, in analog_message self.analog_response_table[data[self.RESPONSE_TABLE_MODE]][self.RESPONSE_TABLE_PIN_DATA_VALUE] IndexError: list index out of range

MrYsLab commented 6 years ago

Does this occur as a result of restarting your program that previously was receiving analog data?

If yes, it is because you must also physically reset the Arduino before restarting your program. Once an analog pin starts receiving data, data is streamed until the board is reset. When the program is reset without physically resetting the board, PyMata receives data on a pin that was not yet initialized and so can't find an entry in the response table, which causes the list index out of range exception. Depending upon the model of Arduino, it is not always possible to reset the board through Firmata.

If what I describe is not your problem, please provide some more detail as to what is causing the problem. Also, are you using StandardFirmata

MrYsLab commented 6 years ago

I am closing this issue since I have not heard back. If you would like to reopen the issue, please leave a comment and we can continue to discuss the issue.