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| author | Angus Gratton <angus@redyak.com.au> | 2025-08-06 17:26:21 +1000 |
|---|---|---|
| committer | Damien George <damien@micropython.org> | 2025-09-10 16:18:03 +1000 |
| commit | 371db85c8e9c29ac66d772e051c7a167782e8407 (patch) | |
| tree | 9468c89325200ead9d402d9aadb704aa30fc0b55 /py/makeversionhdr.py | |
| parent | a43e38544bf707831350dd53091c7d47eddd41bf (diff) | |
esp32/machine_uart: Convert machine.UART objects to static instances.
Makes machine.UART objects static instances (similar to other ports), adds
machine_uart_deinit_all() function for cleanup on soft reset.
- Fixes the case where the OS-level uart_event_task is leaked
(along with 2KB of heap) when a UART object is garbage collected
(including after a soft reset).
- Fixes hard fault if a previous UART irq() fires after the UART object is
garbage collected (including after a soft reset), but before any new UART
object is instantiated for the same UART number.
- Constructing multiple UART objects for the same UART now returns the
same instance multiple times, not different instances.
- Was also able to streamline deinit/init to only install the driver once,
rather than install-with-defaults/uninstall/reinstall.
Alternative would be to add a finaliser, but this is more consistent
with how most other UART objects are implemented.
This work was funded through GitHub Sponsors.
Signed-off-by: Angus Gratton <angus@redyak.com.au>
Diffstat (limited to 'py/makeversionhdr.py')
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