feat: Refactor serial and I2C code.#73
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haydenroche5 merged 2 commits intoblues:mainfrom Sep 12, 2023
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Aug 31, 2023
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- Get rid of conditionals on transaction manager existence and if serial locking should be used by adding no-op implementations of each.
- Handle serial and I2C locking with decorators, serial_lock and i2c_lock, respectively.
- Add timeout functionality to I2C locking. Prior to this commit, it would spin forever if the lock couldn't be acquired.
- For both serial and I2C, combine common code from Transaction and Command into an internal function, _transact. Locking happens over this function.
- Migrate all freestanding serial functions to methods of OpenSerial.
- Create a _read_byte abstraction for the three platforms we support (CPython, MicroPython, CircuitPython).
- Merge the functionality of _preprocess_req into _prepare_request. These are always used together, so it doesn't really make sense to have them as separate functions. Additionally, have _prepare_request do everything needed to transform the request data for transmission. Namely, encode the request string as UTF-8 bytes. Finally, make _prepare_request a method of Notecard. There's no reason for it to be a free function.
- Rename I2C's _send_payload to _transmit.
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notecard/notecard.py
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| # Send a message with the length of the incoming bytes followed | ||
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| if use_periphery: |
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There's an opportunity here to also use a strategy for i2c read/write to avoid the conditional.
- Get rid of conditionals on transaction manager existence and if serial locking should be used by adding no-op implementations of each. - Handle serial and I2C locking with decorators, serial_lock and i2c_lock, respectively. - Add timeout functionality to I2C locking. Prior to this commit, it would spin forever if the lock couldn't be acquired. - For both serial and I2C, combine common code from Transaction and Command into an internal function, _transact. Locking happens over this function. - Migrate all freestanding serial functions to methods of OpenSerial. - Create a _read_byte abstraction for the three platforms we support (CPython, MicroPython, CircuitPython). - Merge the functionality of _preprocess_req into _prepare_request. These are always used together, so it doesn't really make sense to have them as separate functions. Additionally, have _prepare_request do everything needed to transform the request data for transmission. Namely, encode the request string as UTF-8 bytes. Finally, make _prepare_request a method of Notecard. There's no reason for it to be a free function. - Rename I2C's _send_payload to _transmit. - Move Transaction and Command into the base Notecard class. They are now fully abstracted from the underlying comms layer.
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Addressed review feedback with latest commit (minus the context manager for TransactionManager, which I'm shifting to the backlog, for now). Tested locally against Swan + CircuitPython, ESP32 + MicroPython, and Raspberry Pi. |
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