Other Parts Discussed in Thread: BQ26221
Hi
I'm working with the BQ26221 gas gauge, I implement the application circuit as described in the datasheet, and also I downloaded the HDQ implementation as described in the link below.
http://www.ti.com/mcu/docs/litabsmultiplefilelist.tsp?sectionId=96&tabId=1502&literatureNumber=slaa196&docCategoryId=1&familyId=914
I modified the code for using with a MSP2430F2272 device, and tried to communicate with BQ26221, but I had no response from the Gas gauge, I've been debugging the code and try several conditions of working but it doesn't work.
the voltage on the BAT pin is over 3.3 VDC, the device is supplied 3.3VDC, and I'm trying to measure the power on a 3 cells liPo battery.
No matter any memory register I try to read or write I have no answer, I also verified the timing on the signals using a oscilloscope and it seems to be ok.
Has anybody had any similar issue with this device and application note?
thank you for any suggest