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| author | Damien George <damien@micropython.org> | 2024-06-27 11:19:16 +1000 |
|---|---|---|
| committer | Damien George <damien@micropython.org> | 2024-06-27 12:00:20 +1000 |
| commit | 096adca0c88cd779b3e5e391e42db1d46f87bba1 (patch) | |
| tree | cd0a62c79ecc722bcc202cecbbb9142be82f66c3 /docs/esp8266/tutorial/nextsteps.rst | |
| parent | 74f52374e49e3b2370c5fec0e9cfbadc7ec8121e (diff) | |
stm32/pin: Decrease machine_pin_obj_t.pin width from 5 to 4 bits.
Compiling using arm-none-eabi-gcc 14.1.0 with -O2 will give warnings about
possible overflow indexing extint arrays, such as `pyb_extint_callback`.
This is due to `machine_pin_obj_t.pin` having a bit-width of 5, and so a
possible value up to 31, which is usually larger than
`PYB_EXTI_NUM_VECTORS`.
To fix this, change `machine_pin_obj_t.pin` to a bit-width of 4. Only 4
bits are needed for ST MCUs, which have up to 16 pins per port.
Signed-off-by: Damien George <damien@micropython.org>
Diffstat (limited to 'docs/esp8266/tutorial/nextsteps.rst')
0 files changed, 0 insertions, 0 deletions