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Irritating documentation for I2C1 Pins on NUCLEO WL55JC1

GHube.1
Associate II

Hi!

I am currently trying to build a GPS sensor that communicates over I2C with the nucleo Board, but i'm not sure about the documentation.

So I started a new CubeMX Project based on the NUCLEO WL55JC1 and, according to the software (as shown in pic 1), the I2C1 Pins are PA10 (SDA) and PB8 (SCL).

0693W00000APx94QAD.pngHowever, according to the manual the pins should be PA11 and PA12, wich would be pin 9 and 10 on the CN5 connector (shown in pic 2).

0693W00000APxMQQA1.png 

So.. wich one's correct?

Thanks in advance!

1 ACCEPTED SOLUTION

Accepted Solutions
Imen.D
ST Employee

Hello @GHube.1​ ,

in UM2592 rev1, Table 17: CN5 (Pin number 9 and 10) functions should be I2C2_SDA (PA11) and I2C2_SCL (PA12).

(not I2C1_SDA and I2C1_SCL as indicated).

I raised the typos internally for fix in the coming release of User manual UM2592.

Thanks for your contribution.

Imen

When your question is answered, please close this topic by clicking "Accept as Solution".
Thanks
Imen

View solution in original post

4 REPLIES 4
Imen.D
ST Employee

Hello @GHube.1​ ,

in UM2592 rev1, Table 17: CN5 (Pin number 9 and 10) functions should be I2C2_SDA (PA11) and I2C2_SCL (PA12).

(not I2C1_SDA and I2C1_SCL as indicated).

I raised the typos internally for fix in the coming release of User manual UM2592.

Thanks for your contribution.

Imen

When your question is answered, please close this topic by clicking "Accept as Solution".
Thanks
Imen

Thank you!

Imen.D
ST Employee

Hi @GHube.1​ ,

Updates have been done on the new revision of the User manual UM2592 rev2.

Thanks

Imen

When your question is answered, please close this topic by clicking "Accept as Solution".
Thanks
Imen
LLr.1
Senior

0693W00000Ho8SzQAJ.pngHello, also here in the new version (rev2) : it's PB7 (SDA for I2C1)