VL6180X_REG_RESULT_INTERRUPT_STATUS_GPIO always 0

[QZH]

when I use vl6810  with 51 chip , the  i2c use pull up to 1.8V  。

all the init register is correctly， I Using an oscilloscope for detection ，It seems all correct。

but it always wait at VL6180X_REG_RESULT_INTERRUPT_STATUS_GPIO here ：

while(!(VL6180X_ReadByte(VL6180X_REG_RESULT_INTERRUPT_STATUS_GPIO)&0x04));

it  always read 0 ，It took me a long time and I couldn't find where the problem

But if I use STM32 as the MCU, everything will be fine。   

 

 

 

[QZH]

The code is as follows：

uint8_t VL6180X_Init(void)

{

    if(VL6180X_Read_ID() == VL6180X_DEFAULT_ID)

    {

        VL6180X_WriteByte(0x0207, 0x01);

        VL6180X_WriteByte(0x0208, 0x01);

        VL6180X_WriteByte(0x0096, 0x00);

        VL6180X_WriteByte(0x0097, 0xfd);

        VL6180X_WriteByte(0x00e3, 0x00);

        VL6180X_WriteByte(0x00e4, 0x04);

        VL6180X_WriteByte(0x00e5, 0x02);

        VL6180X_WriteByte(0x00e6, 0x01);

        VL6180X_WriteByte(0x00e7, 0x03);

        VL6180X_WriteByte(0x00f5, 0x02);

        VL6180X_WriteByte(0x00d9, 0x05);

        VL6180X_WriteByte(0x00db, 0xce);

        VL6180X_WriteByte(0x00dc, 0x03);

        VL6180X_WriteByte(0x00dd, 0xf8);

        VL6180X_WriteByte(0x009f, 0x00);

        VL6180X_WriteByte(0x00a3, 0x3c);

        VL6180X_WriteByte(0x00b7, 0x00);

        VL6180X_WriteByte(0x00bb, 0x3c);

        VL6180X_WriteByte(0x00b2, 0x09);

        VL6180X_WriteByte(0x00ca, 0x09);

        VL6180X_WriteByte(0x0198, 0x01);

        VL6180X_WriteByte(0x01b0, 0x17);

        VL6180X_WriteByte(0x01ad, 0x00);

        VL6180X_WriteByte(0x00ff, 0x05);

        VL6180X_WriteByte(0x0100, 0x05);

        VL6180X_WriteByte(0x0199, 0x05);

        VL6180X_WriteByte(0x01a6, 0x1b);

        VL6180X_WriteByte(0x01ac, 0x3e);

        VL6180X_WriteByte(0x01a7, 0x1f);

        VL6180X_WriteByte(0x0030, 0x00);

       

        // Recommended : Public registers - See data sheet for more detail

        VL6180X_WriteByte(0x0011, 0x10);       // Enables polling for 'New Sample ready'

                                    // when measurement completes

        VL6180X_WriteByte(0x010a, 0x30);       // Set the averaging sample period

                                    // (compromise between lower noise and

                                    // increased execution time)

        VL6180X_WriteByte(0x003f, 0x46);       // Sets the light and dark gain (upper

                                    // nibble). Dark gain should not be

                                    // changed. !???????0x4 ?????1.0

        VL6180X_WriteByte(0x0031, 0xFF);       // sets the # of range measurements after

                                    // which auto calibration of system is

                                    // performed

        VL6180X_WriteByte(0x0040, 0x63);       // Set ALS integration time to 100ms

        VL6180X_WriteByte(0x002e, 0x01);       // perform a single temperature calibration

                                    // of the ranging sensor

        // Optional: Public registers - See data sheet for more detail

        VL6180X_WriteByte(0x001b, 0x09);    //????  ????

                                    // period to 100ms  ??10ms->0-10ms

        VL6180X_WriteByte(0x003e, 0x31);      //????    ALS??

                                    // to 500ms    

        VL6180X_WriteByte(0x0014, 0x24);       // Configures interrupt on 'New Sample

                                    // Ready threshold event'

        return 0;

    }

    else return 1;

}

//????

uint8_t VL6180X_Read_Range(void)

{

    uint8_t range = 0;

    //????

    while(!(VL6180X_ReadByte(VL6180X_REG_RESULT_RANGE_STATUS) & 0x01));

    VL6180X_WriteByte(VL6180X_REG_SYSRANGE_START,0x01); //??????

    //???????????(New Sample Ready threshold event)

    while(!(VL6180X_ReadByte(VL6180X_REG_RESULT_INTERRUPT_STATUS_GPIO) & 0x04));

    range = VL6180X_ReadByte(VL6180X_REG_RESULT_RANGE_VAL);

    //???????????

    VL6180X_WriteByte(VL6180X_REG_SYSTEM_INTERRUPT_CLEAR,0x07); //0111b ?????????

    return range;

}

[QZH]

1.8V is directly pulled up, STM32 has undergone level conversion, GPIO0 is pulled up to 2.8V, GPIO1 NC

[Scoobie2002]

I am having the same problem but do not understand what the solution is?

I am using the VL6180X on a Arduino Nano 33BLE and the code keeps hanging at this exact same line?

What is the solution? I am completely lost...