Example I2C code for the BQ27510

I've made some progress.

Could the tools group verify the following subcommand values for me, even if they are close. I do not have an eval board with me and I'm using the bq27510 guage. If they are worng, what are they supposed to read?

DEVICE_TYPE [0x0001]       0x510

FW_VERSION [0x0002]        0x111

HW_VERSION [0x0003]       0xb4

The commands that you have shown are returning expected values. If your purpose is to confirm your I2C implementation I would say that it is working right.

Thanks for verifying.

Hi Mike

     I am using dq27510 gauge

   I didn't know what is the procedure to communicate with dq27510 device using i2c in linux

plz guid me

Thanks for advance

Latha,

We do not have any specific sourcecode or guidance to implemnent I2C in linux. Developing for I2C is microprocessor dependent and varies for different platforms.

Michael

Hi Mike

        I want the procedure to initiate the bq27510 .(i.e) what is the command flow to initiate the bq27510

Thanks for your replay

Latha       

Latha,

What kind of initialization are you referring to?

Setting up a bq27510 is done by using the evaluation software. The bqEasy section of the evaluation software guides you through the setup that eventually has you doing a learning cycle so that a data flash image can be created which would then be loaded into all bq27510 devices that go through your production line.

Latha,

Maybe the following doc  will help you get started with the command format:

http://focus.ti.com.cn/cn/lit/an/slua467a/slua467a.pdf

The doc has examples on how to send and receive commands and  sub-command replies.

If you are using uClinux, then you must make sure you have your I2C device in /dev

Hi

        I can able to communicate with bq275410 device using i2c but now i want to read the data from data flash memory. But i read the 32 byte data using DataFlashBlock() cmd

        I want the procedure to write and read the data to the data flash (accessing data flash)

     plz guid me

Thanks for your information

If you are trying to put the "Golden File" in, all TI has released is the 3 page flowchart on pg 147 in SLUA449B. Follow the chart and you should be able to program it.

Thanks for your information :)

Regards

Latha

Just a warning. Make sure you have the evaluation board. If you erase the IF and then not able to reprogram the chip, it's essentially bricked. Make sure you save the .senc file so you can recover it.

We are unable to locate the SLUA449B.pdf from the TI site

Plz share the link for the SLUA449B.pdf

Regards

Latha

Hi Latha,

There is a new version of that document online.  Please try this http://focus.ti.com/lit/an/slua449c/slua449c.pdf

Regards,

Nancy

Hi Nancy

           Thanks for your information,

           But i am not using  the evm software, I'm creating the driver in embedded linux, so i want the command flow to set the battery profile in dq27510 and also i want to know how to write data to data flash . So plz help me. It is verry urgent.

Regards

Latha

Hi queirarard ,

Can you pls share the code to read cell voltage in BQ27510 ?

Thanks

We now have an app note with sample C code for the MSP430 to demonstrate communication with our single-cell fuel gauges (using I2C and HDQ). 

It also has examples for communicating with our authentication ICs (using HDQ and SDQ).

You can find it in the Application Notes section of the product folders on ti.com.

Here is a direct link:

MSP430 Microcontroller Software for Handheld Fuel Gauge & Battery Authentication

It has examples for:

bq26100

bq26150

bq27000

bq27010

bq27200

bq27210

bq27500

bq27505

bq27510

bq27541

Hi Mike,

Iam also using bq27510 with the customised board. I dont have EV2300 to use the evaluation software.Please suggest me how can i start or use bq27510 without Ev2300. Please send me if you have any code for I2C communication of BQ27510 with MSP430.

I know iam replying after two years. but please do reply me and help me in resolving this.

Hi,

Iam using BQ27510 with customised board and dont have EV2300 use the evaluation software. Can you please share code how to start up with the fuel guage IC to read battery capacity using I2C with MSP430 controller.

thanks in advance.

Hi Deepu,

The link in my post above from May 13 has the sample code you are asking for.

Hi,

I am trying to look into the example code. But the below link does not appear to be valid.

SP430 Microcontroller Software for Handheld Fuel Gauge & Battery Authentication

can you please let me know the working location to access the example code.

Regards,

Radhibhas

It should be SLVA413A and I've updated the link above.  Sorry!

May I ask how to send sub command to B!27510?

unsigned char write_cmd[2]= {0} ;
write_cmd[0] = 0x00 ;
write_cmd[1] = subcmd ;
ret = I2Csendcmd(slaveaddress,,write_cmd,2) ;

EX: for deviceid. subcmd is 1. the command I sent out is 

write_cmd[0] = 0x00 ;
write_cmd[1] = 0x01;

does make sense?

example of  subcommand to read firwmare version.. results is in little endian which is  0329 

thanks

Onyx