STM32L476Disco and USART1

[AKarp.1]

Hello guys. Can anybody explain me how to use USART1 in STM32L476Disco?

I mean that PA9 and PA10 did not soldered, but page 27 of user manual has info about COM1 and COM2 on these pins. And of course I have removed display from a slot, and tried all pins.

[waclawek.jan]

The 'L4 DISCO unfortunately has only a limited number of pins brought out to the external connector. As you've remarked, PA9/PA10 is brought to the LCD socked, so after removing the LCD you can connect there.

Other option might be to use the PB6/PB7 pin pair, which are actually brought out to P1.

If you want to use a board with better pin-to-connector connectivity, consider getting a Nucleo board.

JW

[AKarp.1]

Thank you.

I was inattentive when looking for PA9 PA10 pins. Now problem with USART1 is solved.

I created small PDF file with explained pinout. Hope it will help someone else.

But my adventures are continue.... =)

Where is LPUART1_RX and LPUART1_TX on L4 Disco? =)))

[waclawek.jan]

Look at the pinout table in the STM32L476 datasheet. There you can find LPUART1 Rx/Tx at PB10/PB11 or PC0/PC1. Unfortunately, both pairs are used for internal interconnections on the board, and are not brought out to any connector.

As I've said, you might want to get the Nucleo board if you want to have better connectivity to the host processor's pins.

JW

[AKarp.1]

Thank you very much!!