I2C with EV2300

Dimitri Marquois

Other Parts Discussed in Thread: PCA9536

Hello,

I am trying to send I2C data frame with EV2300 to communicate with a PCA 9536:

4520.PCA9536.pdf

The frame is like this

0x01 0x00 0x00 0x020 0x82 0x01 0xFE

I have the source code in VB of BQTESTER. I try some function:

               Bq80xRW1.ReadI2CBlockOnSMB
               Bq80xRW1.I2CWriteBlock
               Bq80xRW1.I2CReadBlock
               Bq80xRW1.I2CWriteBlock

but the frame is not the same, is more like

0xaa 0x1d 0x00 0x00 0x00 0x03 0x82 0x01 0x02 0x0c 0x55

I am wondering if I can send that with the EV2300 ?

Do I need to modify the Bq80xRW1 library ?

Regards

over 13 years ago

0 Sambit Panigrahi over 13 years ago

TI__Prodigy 195 points

Dimitri,

The bq80xRW1 source is not shared. You will not be able to modify the library.

If functions available in this library is not working for your case, you can try the Total Phase Aardvark - It can be used as a master and they have libraries to communicate with Aardvark in C/C++,VB & LabVIEW.

0 Dimitri Marquois over 13 years ago in reply to Sambit Panigrahi

Intellectual 640 points

This means that EV2300 it's only works with BQ20z ? We can't communicate with other componant ?

0 Dimitri Marquois over 13 years ago in reply to Dimitri Marquois

Intellectual 640 points

On the EV2300 there are a I2C connection. Do you have some library to use it ?

0 Sambit Panigrahi over 13 years ago in reply to Dimitri Marquois

TI__Prodigy 195 points

Dimitri,

The bq80xRW library contains functions for I2C. You can use the below for I2C communication

Read I2C Data Block : Bq80xRW1.I2CReadBlock

Write I2C Data Block : Bq80xRW1.I2CWriteBlock

If you want to R/W one byte, just make the nLen = 1

For our I2C based parts, these functions suffice for communication.

Regards,

Sambit

0 Dimitri Marquois over 13 years ago in reply to Sambit Panigrahi

Intellectual 640 points

Hi,

Yes, I tested functions, but is not matching with my need.

Bq80xRW1.I2CWriteBlock has a special data frame which start with aa and end with 55.

I want send data: 0x01 0x00 0x00 0x020 0x82 0x01 0xFE

0 Dimitri Marquois over 13 years ago in reply to Dimitri Marquois

Intellectual 640 points

I tested with the EV2300 the I2C connection, and I have nothings on the oscilloscope. Data are all send through the SMB connection.

Do I need to send a command to the EV2300 to configure it in I2C mode ?

0 Jackie Hui over 13 years ago in reply to Dimitri Marquois

TI__Expert 3865 points

The EV2300 and the ocx is designed to communicate with the bq devices (or SBS smart battery device). It doesn't give the option to communicate to other components.

0 Dimitri Marquois over 13 years ago in reply to Jackie Hui

Intellectual 640 points

SMB is for bq devices. But what is the output I2C then? For me I2C is a generic protocole which can communicate with all I2C componants.

Regards

0 Jackie Hui over 13 years ago in reply to Dimitri Marquois

TI__Expert 3865 points

We have devices using I2C as well. The device address is implemented in the library to talk to our devices or SBS compliance devices.

It is not designed for generic usage.

0 Alexander Gatalsky over 11 years ago in reply to Sambit Panigrahi

Prodigy 60 points

Where we can found _full_ help file for BQ80xRW.ocx ?

There is only I2CReadWrite function description at all found "EV2300 Customer Kit.zip" and "bq80xRW help.zip" files.

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I2C with EV2300