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altos/stm32f1: Grab both TX/RX DMA mutexes while doing I2C
authorKeith Packard <keithp@keithp.com>
Sat, 2 Mar 2024 23:23:57 +0000 (16:23 -0700)
committerKeith Packard <keithp@keithp.com>
Sat, 2 Mar 2024 23:23:57 +0000 (16:23 -0700)
The I2C engine appears to trigger an extra RX DMA transaction which
scrambles anything sharing the same DMA units.

Signed-off-by: Keith Packard <keithp@keithp.com>

No differences found
AltOS - the operating system for Altus Metrum products