BQ34110: initial steps to start communication with MCU

I would suggest you take a look at the app note below.

https://www.ti.com/lit/an/slua790/slua790.pdf

Andy

Thank you for quick reply.

When I am trying to read DeviceType() data,it is showing only 0000 values than 0110.

Can you send the implementation function of atleast single control command on stm32 micro controller ?  

Can I get the flowchart or any algorithm to get at least DeviceType() or DeviceName()?

I had made successful communication with bq34110 ic but when i was trying to get DeviceType() , the responce should be 0x1001 in little endien format, but I don't get response like that.

Also, I am confused that when I send 0X01 data to 0x00 control register address and 0x00 data to 0x01 control register address, I should get its respective DeviceType() response at 0x40 /0x41 address.

Please correct me if I am wrong. This is the sequence I am following in my implementation.

Hi Andy

I followed steps given by you and got response as expected 0x0110

but when I tried for another sub command that is device name response is 

00 D4 0B A9 0B FF FF in hex format and

C C C C C C C in char format

can u tell what is exactly missing here?

also I dont have BQstudio with me . I am doing all my interfacing using i2c communication.

Can I get default response values when perticular subcommand is used to cross check weather we are getting correct response or not

Hi Andy

I will again check it considering your suggestions.

I have some basic queries which are not cleared through TRM

1. Can we access consecutive sub commands one after other in a sequence? If yes then is there any delay to be added in between?

2. Is it mandatory to perform factory calibration before accessing any sub command also? I understood that it is important for voltage ,current , temp, SOH etc commands.

3. Without doing any setting what is default state of ic (sealed or unsealed) and  mode (normal, snooze, shutdown) ?

4. How to check default configuration status in IC  before writing for any command?

Thanks in advance.

Hello Andy,

Thank you . Your suggestions was very helpful.

With that reference, Can you help me more in things as bq34110 I2C note don't have that details:

1. I had evaluated default values of Pin control, Operation config A and design capacity registers as per guidelines. And now I wanted to change its values as per my design. I had followed following sequence:

------- calibration start

------- Data Flash Access Commands to Change the Pin control register as per bq34110 I2C note.

------- calibration end

I wanted to check weather the new value is stored accurately or not, What sequence should I follow ?

2. What I learnt from TRM is that factory calibration is necessary to read voltage value, Do I need to set  Pin control, Operation config A and design capacity etc before Board Offset, temp, voltage, current calibration?

3. Minimum which registers and parameters required to get at least voltage reading?

If possible, please recommend page number of document where all these details are mentioned.

Thanks in Advance. 

How did you the calibration? If you still don't have the EV2400 and bqStudio,  I don't think you know all the details about how to do the calibration. 

As I mentioned before,  you need to get the proper tools to make your life easier.

Andy

Hello,

I done it by following I2C communication note released by TI.

As I know the release note says host can communicate with BQ34110 using I2c comm and i had achieved it partially using that.

Only verification of modified register values are need to be verified.

It would be more appreciated if you could send bqstudio view showing  updated view of register .

I am sure it will not trouble TI a lot.

Thanks in advance .

dear

my friend has also use BQ34110，can it communicate via 328404042@qq.com？thanks