STM32L4A6 USART port selection for bootloader?
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2023-05-31 7:02 AM - edited 2023-11-20 4:18 AM
Bootloader only responding on PC10 and PC11, but not on PA2,PA3,
how to select a particular UART port for bootloader?
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Bootloader
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STM32L4 series
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UART-USART
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2023-05-31 7:46 AM
It is typically looking for signal transitions on multiple pins, first one to see traffic wins the race.
Make sure the other RX pins are not noisy, ie data from a GPS/GNSS receiver that squawks at startup.
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