SMBUS Source code

[yusupkhan]

Dear all,

               I am using KL46 controller with external RTC(DS1307-Slave address is 0x68). I am receiving date and time from that RTC through I2C Communication. Here I have attached example code for I2C communication. I am using the same source code for RTC communication. Now I have Multi-cell BMS (Battery Monitoring System) Platform. I need to receive/collect data from Battery pack to KL46 through SMBUS communication. But I am using the same code (Slave address is 0x0B), I given command but I am not receiving proper data. Kindly let me know that any changes I have to do for this communication in hardware as well as software.

Original Attachment has been moved to: k40_i2c.c.zip

Original Attachment has been moved to: isr.h.zip

Original Attachment has been moved to: i2c_demo.c.zip

Original Attachment has been moved to: k40_i2c.h.zip

[Hui_Ma]

Hi,

About the hardware design difference between I2C with SMBus, the pullup resistor values be different.

Customer could refer SMBus Quick Start Guide here, which with a chapter to description the difference between I2C and SMBus.

About the software aspect, customer could refer AN4342 related software, there provides a simple SMBus basic communication example.

AN4342SW could be downloaded.

Wish it helps.

Have a great day,
best regards,

Ma Hui

-----------------------------------------------------------------------------------------------------------------------
Note: If this post answers your question, please click the Correct Answer button. Thank you!
-----------------------------------------------------------------------------------------------------------------------