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Mohamed Ayman 1097e00b5f arm/stm32f4: extend USART DR field to 9 bits
The STM32F4 USART data register supports up to 9-bit data
when CR1.M is set. The current DR macros mask only bits [7:0],
which truncates the MSB in 9-bit mode.
Extend the field width to [8:0] to match the hardware
definition while remaining compatible with 8-bit mode.
2026-03-19 19:13:44 -05:00
..
2026-03-19 11:34:13 -05:00