PMU is not online...Please help me!

[khoa21214475]

Dear lewisxhe, when I scan i2c address, I received 0x34. but when I use example AXP2101_Voltage_Example, I received "PMU is not online" I don't know why, i2c bus is ok, 2 resistors pullup is ok, but my device can't connect to AXP2101! ////////////////////////////////////////////////////////////////////////////////////////////////////////////// Here is my code:

#define XPOWERS_CHIP_AXP2101

#include <Wire.h>
#include <Arduino.h>
#include "XPowersLib.h"

XPowersPMU PMU;

#ifndef CONFIG_PMU_SDA
#define CONFIG_PMU_SDA 10
#endif

#ifndef CONFIG_PMU_SCL
#define CONFIG_PMU_SCL 9
#endif

#ifndef CONFIG_PMU_IRQ
#define CONFIG_PMU_IRQ 8
#endif

const uint8_t i2c_sda = CONFIG_PMU_SDA;
const uint8_t i2c_scl = CONFIG_PMU_SCL;
const uint8_t pmu_irq_pin = CONFIG_PMU_IRQ;

uint16_t targetVol;
//uint16_t vol = 0;

void setup()
{
    Serial.begin(115200);
    Wire.begin();
    bool result = PMU.begin(Wire, AXP2101_SLAVE_ADDRESS, i2c_sda, i2c_scl);
    delay(100);

    if (result == false) {
      Serial.println("PMU is not online..."); while (1)delay(50);
    }

    Serial.println("AXP2101 Power Output Test.");

    PMU.disableDC2();
    PMU.disableDC3();
    PMU.disableDC4();
    PMU.disableDC5();
    PMU.disableALDO1();
    PMU.disableALDO2();
    PMU.disableALDO3();
    PMU.disableALDO4();
    PMU.disableBLDO1();
    PMU.disableBLDO2();
    PMU.disableCPUSLDO();
    PMU.disableDLDO1();
    PMU.disableDLDO2();

    //DCDC1
    PMU.setDC1Voltage(3300);

    //DCDC3
    PMU.setDC3Voltage(3300);
    delay(1);
    targetVol = PMU.getDC3Voltage();

    //ALDO1 IMAX=300mA
    //500~3500mV, 100mV/step,31steps
    PMU.setALDO1Voltage(3300);
    delay(1);
    targetVol = PMU.getALDO1Voltage();

    //ALDO2 IMAX=300mA
    //500~3500mV, 100mV/step,31steps
    PMU.setALDO2Voltage(3300);
    delay(1);
    targetVol = PMU.getALDO2Voltage();

    //ALDO3 IMAX=300mA
    //500~3500mV, 100mV/step,31steps

    PMU.setALDO3Voltage(3300);
    delay(1);
    targetVol = PMU.getALDO3Voltage();

    //ALDO4 IMAX=300mA
    //500~3500mV, 100mV/step,31steps
    PMU.setALDO4Voltage(3300);
    delay(1);
    targetVol = PMU.getALDO4Voltage();

    //BLDO1 IMAX=300mA
    //500~3500mV, 100mV/step,31steps
    PMU.setBLDO1Voltage(3300);
    delay(1);
    targetVol = PMU.getBLDO1Voltage();

    PMU.enableDC1();
    PMU.enableDC3();

    PMU.enableALDO1();
    PMU.enableALDO2();
    PMU.enableALDO3();
    PMU.enableALDO4();
    PMU.enableBLDO1();
}
/////////////////////////////////////////////////////////////
void loop()
{
    delay(100);
}

[lewisxhe]

Change to the following code to test, clearly indicating which pin I2C SDA, SCL is connected to. And check if the ID is 0x03

#define XPOWERS_CHIP_AXP2101

#include <Wire.h>
#include <Arduino.h>
#include "XPowersLib.h"

XPowersPMU PMU;

const uint8_t i2c_sda = You Board SDA;
const uint8_t i2c_scl = You Board SCL;

void setup()
{
    Serial.begin(115200);
    //Wire.begin() ; Don't use Wire.begin()unless you are sure you are selecting the correct i2c pin
    bool result = PMU.begin(Wire, AXP2101_SLAVE_ADDRESS, i2c_sda, i2c_scl);
    delay(100);

    Serial.printf("getID:0x%x\n", PMU.getChipID());

    if (result == false) {
      Serial.println("PMU is not online..."); while (1)delay(50);
    }

}

void loop(){
}

[khoa21214475]

Dear lewisxhe,

Im tested, but the result is 0xFF

[lewisxhe]

Can you search for the device with 0X34 and get the ID as 0XFF? Which board are you using? Did you buy the chip yourself?

[khoa21214475]

Thanks Lewisxhe, I will try to find out this problem by your way! I use STM32L432 chip, I bought AXP2101 via taobao.com (link: https://item.taobao.com/item.htm?spm=a21n57.1.0.0.3682523cCuZCAO&id=730904931624&ns=1&abbucket=8#detail) Many thank Lewisxhe!

[khoa21214475]

I read register at address 0x03 and the result is 0x4A. May be this library can not use for STM32 duino. My code:

include

const int deviceAddress = 0x34; // Địa chỉ của thiết bị I2C (thay thế bằng địa chỉ thực tế) void setup() { Serial.begin(115200); Wire.begin(); } void loop() { // Địa chỉ thanh ghi bạn muốn đọc int registerAddress = 0x03; // Thay thế bằng địa chỉ thanh ghi thực tế

// Bắt đầu gửi yêu cầu đến thiết bị Wire.beginTransmission(deviceAddress); Wire.write(registerAddress); Wire.endTransmission();

// Đọc 1 byte từ thiết bị Wire.requestFrom(deviceAddress, 1); if (Wire.available()) { int data = Wire.read(); // Đọc dữ liệu từ thanh ghi Serial.print("register 0x"); Serial.print(registerAddress, HEX); Serial.print(": 0x"); Serial.println(data,HEX); }

delay(1000); // Chờ 1 giây trước khi đọc lại }

[lewisxhe]

Okay, I passed the test using Nucleo f411re

[khoa21214475]

Really thank you very much. Your new update is running fine with STM32. I sincerely thank you very much!

[lyusupov]

Your new update is running fine with STM32.

If you are happy with the fix made by Lewis - why don't you close this ticket ?