IMX RT1170 I2C fast mode and high speed mode configurations

[Ragnar]

Hi NXP,

                 In the RT1170 reference manual it was given like it LPI2C  supports both the FAST MODE and the HIGH SPEED MODE. But in the SDK there is no exaple related to it. Could you kindly help me regarding how to configure the IMX RT1170 LPI2C to FAST MODE and HIGH SPEED MODE.

Regards,

Ragnar.

[mayliu1 · Accepted solution]

Hi @Ragnar ,

Thank you for your interest in the NXP MIMXRT product, I would  like to provide service for you.

MIMXRT1170RM describes the relationship between  I2C Mode and Baud Rate.

Fast Mode is 400kbps, Fast+ Mode is 1Mbps, and so on.

So you just need to set the I2C Baud Rate corresponding to the I2C Mode to achieve your needs.

For example, you can import a NXP SDK I2C demo, and  modify the baud rate configuration.

I import "evkbmimxrt1170_lpi2c_edma_b2b_transfer_master_cm7", change this value.

Wish it helps you.
If you still have question about it, please kindly let me know.

Best Regards

mayliu