Pull down SDA pin i2c

[Hkhan7861]

Good day

I am developing on the nrf9160dk with a tag reader using i2c and am wanting to know if there is a function to pull down the SDA or SCL pins during operation in order to wake up the slave device.

Thank you in advance.

Kind regards,

Hassan

[Vidar Berg]

Hello,

Sorry, I'm not sure if I understand the question correctly. The timing of when the SDA  and SCL line are pulled low during transactions is defined by the i2c standard and handled by the HW in our TWIM peripheral (Ref. Two Wire Interface Master (TWIM) timing specifications).

Do you mean that your i2c slave device requires a non-standard wake-up sequence? If so, maybe you could provide me a link to the documentation where this sequence is described?

Best regards,

Vidar