Using a different brand of MCU to control nPM1300

RE: Using a different brand of MCU to control nPM1300

Doris.chen — Thu, 27 Jun 2024 09:38:02 GMT

Hi Robin,

Thank you for your reply. We have successfully managed to charge the nPM1300.

However, as far as I know, additional commands are required to charge the nPM1300.

Overall, the aforementioned command is effective for charging.

Br,

Doris

RE: Using a different brand of MCU to control nPM1300

Robin M Saltnes — Thu, 27 Jun 2024 08:51:05 GMT

Here's an example of how I enabled charging with an Arduino

#include <Wire.h>

void setup() {
    Wire.begin(); //set charge current limit//
    Wire.beginTransmission(107); // 107 = I2C address of nPM1300
    Wire.write(byte(0x3)); // address offset for CHARGER
    Wire.write(byte(0x08)); // BCHGISETCHARGEMSB 
    Wire.write(byte(0x64)); // set max charging current to 400 mA
    Wire.endTransmission();
    
    Wire.begin(); //set charge termination voltage//
    Wire.beginTransmission(107); 
    Wire.write(byte(0x3)); 
    Wire.write(byte(0x0c)); // BCHGVTERM
    Wire.write(byte(0x08)); // set charging to stop at 4.2 V 
    Wire.endTransmission();
    
    Wire.begin(); //enable charger// 
    Wire.beginTransmission(107); 
    Wire.write(byte(0x3)); 
    Wire.write(byte(0x04)); // BCHGENABLESET
    Wire.write(byte(0x01)); // Enable charging
    Wire.endTransmission();

}

Br,

Robin

RE: Using a different brand of MCU to control nPM1300

Andy Sinclair — Mon, 17 Jun 2024 08:41:07 GMT

Hi Doris.

If you would like to write the registers directly rather than use the provided drivers, please refer to the product specification:
nPM1300 Product Specification (nordicsemi.com)

For example, to configure the charger, please see this section:
CHARGER — Battery charger (nordicsemi.com)

Best regards

Andy

RE: Using a different brand of MCU to control nPM1300

Doris.chen — Mon, 17 Jun 2024 02:31:27 GMT

Hi Helsing,

In fact, I have already seen this package, but we are currently developing through the Keil C platform. Therefore, this package of code is of little use to us.

Could you provide me with a simple process and specify which registers must be set? I intend to use it as a pure power manager IC without utilizing the API you have developed.

Best Regards ,

Doris

RE: Using a different brand of MCU to control nPM1300

helsing — Fri, 14 Jun 2024 13:29:47 GMT

Hello Doris,

If you are not using nRF Connect SDK then we have a bare metal driver called 'npmx':

https://github.com/NordicSemiconductor/npmx.