How to locate the PD8 and PD9 port pins on the nucleo 144 STM32F429ZI for external USART3 interfacing with the TTl to RS485 converter. A brief explanation of the config of the SB (solder bridges) connections will be nice or where to get more informat

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Best answer by Pavel A.

The Nucleo has two rows of holes on each side. There you'll find the pins not routed to the black connectors.

Lead III

Just have look at the board's manual - you will find all the connectors and config options there.

My STM32 stuff on github - compact USB device stack and more: https://github.com/gbm-ii/gbmUSBdevice

Associate

I am actually new to stm32 and perhaps there is

something am missing. The user manual says UART3 is linked to PD8 and PD9 but on the extension connectors diagram, I cant find PD8 and PD9.

Pavel A.Best answer

Super User

The Nucleo has two rows of holes on each side. There you'll find the pins not routed to the black connectors.

Associate

Got it thanks

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