BQ40Z80: BQ40Z80: Pin configuration Issues (Pin 15)

LOIC REBOUSSIN

Expert 1620 points

Part Number: BQ40Z80

Hi Batt,

I have any the same things after Reseting the gauge

Loïc

over 5 years ago

0 Onyx Ahiakwo over 5 years ago

TI__Guru* 76230 points

Hi Loic,

Batt is out of office. Can you be a little bit more descriptive about the issues you are facing?

thanks

Onyx

0 LOIC REBOUSSIN over 5 years ago in reply to Onyx Ahiakwo

Expert 1620 points

Hi Onyx,

I try to managed GPIO Pin.

I have right configured Data Memory for activating Pin 12 and Pin 15.

Now I have good for Pin 12 but not for Pin 15, it is always ON.

Data Memory configuration :

1- Setting/Configuration/Pin configuration = 0x 0183

2- Setting/Configuration/FlagMapSetUp0 = 0x8841

3- Setting/Configuration/FlagMapSetUp0 = 0x8041

Test conditions:

A - When FD flag of Battery Status are Set OFF (Green) then :

-> Pin 12 is set to 0 V

-> Pin 15 is set to 1.51 V

B - When FD flag of Battery Status are Set ON (Red) then :

-> Pin 12 is set to 1.8 V

-> Pin 15 is set to 1.51 V instead of 1.8V

Can you try this ?

BR,

Loïc

0 Damian Lewis over 5 years ago in reply to LOIC REBOUSSIN

TI__Mastermind 34775 points

Hi Loic,

Can you provide a gg.csv file for us to review and test?

0 LOIC REBOUSSIN over 5 years ago in reply to Damian Lewis

Expert 1620 points

Hi Damian,

Work In progress!

I have 2 issues :

1- I'm using GPIO the Pin 15 for enable a LDO regulator (TPS70930DBVR : Texas Instrument). Without this composant I haven't 1.51 V. So my first issue are a flowing current through EN input to IN input from LDO regulator. I will use a stage with Mosfet between the BQ and LDO regulator for solve It.

2- Without LDO regulator, when I write Word 0x100 on command 0x49 (GPIOWrite()), I have right 0x11 on 0x48 read (GPIORead()) and GPIO pin 15 are good 5V (3.5 V with small load) . With reverse command I have good 0 V on the GPIO Pin 15.

=> But the signal keep always to 0 V with FlaMapSetUp function !