read current from IP5310 chip

[clement-nardi]

Hello,

I have added the possibility to see the current draw from the battery in mA.
Positive value = charging battery
Negative value = drawing energy from battery

Example 1: USB-C plugged in

---

Voltage: 3.92V
Current: 1232mA
Battery: 16%
Battery Low

Example 2: unplugged, OS idle

---

Voltage: 3.70V
Current: -156mA
Battery: 16%
Battery Low

Example 3: unplugged, CPU 100%

---

Voltage: 3.66V
Current: -410mA
Battery: 16%
Battery Low

Hope this can help!

[majki09]

Hi @clement-nardi !
This is awesome what you did, I'm really amazed. I wonder how did you do to get this information, did you get somehow I2C specification for the IP5310? Or it was just reverse-engineering of the I2C on X728 board?

I also wonder is it possible to control somehow this chip, eg. to control battery charging.

I will definitelly use your code improvement in my setup!
Thanks

[clement-nardi]

Hi @majki09,

I found the I2C register map (in chinese) of a similar chip in a document attached to this topic on eevblog.com.
Then I digged a bit in the available register values, and found what I needed at address 20.

In the register map many variable names start with "set_" and are marked as read/write, so I suppose you could control a few things indeed.

[majki09]

Hello @clement-nardi
Thank you for the response. I've also googled for IP5310 I2C specification and I didn't find it, found only other models and it's varies much between models. Getting a proper address without specification is more guessing. I've mailed the manufacturer of this chip for documentation, as far as they respond I will share the manual.

[mano1979]

I found this data for reading writing the registers.
https://www.google.com/url?sa=t&source=web&rct=j&opi=89978449&url=https://www.scribd.com/document/713812641/IP5310-REG-V1-2-zh-CN-en&ved=2ahUKEwj7-qGci5iJAxUKfqQEHZGXOScQFnoECBIQAQ&usg=AOvVaw2zlwbd3BGfqO8rFfbiqK_6

I want to disable the auto power off function (when low current is used it shuts off automatically)
Can anyone help me with that?

[Moksh-2000]

hii can tell me i need 4s module like this is there possible to trigger to 4s voltage or any other module that you know

[einstein1211]

713812641-IP5310-REG-V1-2-zh-CN-en.pdf
To save everyone the trouble of starting the sribd free trial and immediately cancelling