BQ27220: BQ27220 Data Memory register設定

Neo Chang

Part Number: BQ27220
Other Parts Discussed in Thread: BQSTUDIO

請問BQ27220, 我參考以下sample driver來改:

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/drivers/power/supply/bq27xxx_battery.c

其中dm_reg 的參數, 對應至規格書的什麼參數定義的?

DESIGN_CAPACITY

DESIGN_ENERGE

TERMINATE_VOLTAGE

static struct bq27xxx_dm_reg bq27411_dm_regs[] = {
	[BQ27XXX_DM_DESIGN_CAPACITY]   = { 82, 10, 2,    0, 32767 },
	[BQ27XXX_DM_DESIGN_ENERGY]     = { 82, 12, 2,    0, 32767 },
	[BQ27XXX_DM_TERMINATE_VOLTAGE] = { 82, 16, 2, 2800,  3700 },
};

1 个月前

0 Neo Chang 1 个月前

Prodigy 30 points

Example:
The bq27421 has a subclass State (subclass ID: 81) which holds parameters associated with the state of
the gauge and the cell, among them:
• Design capacity (offset: 10, length: 2 bytes, data type = I2), units = mAh
• Avg I Last Run (offset: 35, length: 2 bytes, data type = I2), units = mA

要如何知道bq27220 subclass ID ?

offset, length , min and max?