I2C slave configuration

[soniyajchand]

Hi,

I am trying to perform a loopback I2C communication between I2C1 and I2C0. Here I2C0 is configured in slave mode. Trying to generate I2C clock from I2C1 master, which is not happening. I checked the status of MTDR register by updating it with slave address and the command to to perform repeated start. I found the register not getting updated with the bit values. Not able to figure out what possibly could be the reason. What areas should I check to debug this issue?

Another doubt it, do I have to configure CGC, PCS and PR of PCC register for I2C0 which is acting as a slave or for slave these fields shouldn't be configured as master controls the clock? Master code to STARTPCC configuration for I2C slave

Thanks in advance.

Regards,

Soniya Chandran

[Robin_Shen · Accepted solution]

Hi Soniya Chandran,

Since you are using S32 Design Studio for ARM Version 2.2, please refer the lpi2c_master_s32k148 and lpi2c_slave_s32k148 example in S32SDK S32K1xx RTM v3.0.0 Example Projects.

Best Regards,
Robin
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