Part Number: BQ27421-G1
Other Parts Discussed in Thread: GPCRB, BQSTUDIO, BQ25600,
Tool/software:
Hi team,
Customer try to use BQ27421 with the chemical ID get from GPCRB tool.
Their battery best match Chem ID 366, and they would like to get the resist-table write into BQ27421 using their software, could you help check how they could do this?
Current software code:
Thanks and Best regards,
Will
Hi Adrian,
This consultation question was raised by me.
Based on your response（You will need to just program the ChemID onto the gauge）, we still don't understand how to obtain the corresponding "resist-table" for the battery we are currently using.
We installed the bqStudio tool and selected the Gauge we were using, as shown in the following figure:
After selecting Gauge, click finish to enter the interface as shown below, but we did not see the Chemical ID menu item.
Our product is an Android system product. The charger used is BQ25600, Guage is BQ27421, and the battery is 130mAh.
I see a 'bat-resist-table' configuration item in the dts of the BQ27421 driver code，as follows:
battery_645mAh: battery_645mAh {
qmax-cell0 = <15546>;
resist-table = <8 8 8 10 12 9 13 18 23 29 34 47 60 87 131>;
};
bq27421: fuel-gauge@55 {
compatible = "ti,bq27421";
reg = <0x55>;
interrupt-parent = <&tlmm>;
interrupts = <7 IRQ_TYPE_EDGE_FALLING>;
pinctrl-names = "default";
pinctrl-0 = <&bq27421_intr_default>;
bat-resist-table = <&battery_645mAh>;
monitored-battery = <&battery>;
status = "ok";
};
Looking at the name "batery-645mAh", we feel that the current configuration in DTS "resist table=<8 8 8 10 12 9 13 18 23 29 34 47 60 87 131>" may be for a 645mAh battery. So, we would like to ask how we can correctly modify the data of this' resist-table 'to the 130mAh battery.
The GPC report uploaded by Will is ours, and the email feedback at that time was the best match Chem ID 366,.
Many thanks.