am335x tps65217 battery status check

Ahn,

This link might help: http://e2e.ti.com/support/power_management/pmu/f/200/t/395010 Let me know if you need more information, or a different suggestion.

Hi,

Here is tps65217 i2c register value.

# i2cdump -f -y -r 0x00-0x1e 0 0x24 b
         0   1    2    3    4    5    6    7    8    9    a    b    c    d    e    f         0123456789abcdef
00:  e2  3f  00  01  b1  80  b2  01  00  00  08  00  7f   0c  18  02       ??.?????..?.????
10:  09  06 09  38  26  3f   7f   00  03  15  5f   32  40  20  00             ???8&??.??_2@ .

But, value is always same.

Is it correct?

Ahn,

Please confirm that you set the MUX[2:0] bits to 001. What does the MUX_OUT pin on the board read out when you measure it? You shouldn't, get the value of the bat in I2C, the register only tells what voltage to measure and output on the MUX_OUT pin.

Janice

Ahn,

Are you using the BBB? It is pin 16 on the TPS65217, you would need to feed that to the ADC on the AM335x

Janice

Hi,

I'm connect the MUX_OUT to AIN7.

And kernel config change.

 CONFIG_IIO=y

 CONFIG_TI_AM335X_ADC=y

But, I can't found the "ain*" file.

# find /sys/ -name "ain*"

#

Additionally, charger is not working.

How to set the CH_EN bit.

( CHG_EN bit is already set. )