VL53L1X RangeStatus No Update problem

[RSzil]

Hi!

I want use an VL53L1X sensor for our project. I "ported" to original ST api to TI chip and TIRTOS. But I cant measure any distance. Now I just want to try the sensor, so I using "polling" method. But when I call a GetMeasurementDataReady function, the "data_ready" variable not set. I am almost sure not problem with porting, because I can get the device Info. After I call GetDeviceInfo the struct has contains:

name : Vl53L1 cut 1.1

type: VL53L1

product ID: 00000

ProductType: 239 (0xef)

RevMajor: 1

RevMinot: 15 (0x0f)

The drivers info is here:

revision 1885

major 2

minor 3

build 3

My code is here:

 VL53L1_Error status;
    VL53L1_RangingMeasurementData_t ranging;
    // dev=&pdev;
 
    uint8_t data_ready = 0;
 
    init_i2c();
    // dev.I2cDevAddr=0x52;
    dev.I2cDevAddr = 0x29;
 
    PIN_setOutputValue(ledPinHandle, SENSOR_SHUTDOWN, SENSOR_OFF);
    Task_sleep(100000);
    PIN_setOutputValue(ledPinHandle, SENSOR_SHUTDOWN, SENSOR_ON);
    Task_sleep(100000);
 
    status = VL53L1_WaitDeviceBooted(&dev);
    //Task_sleep(10000);
 
    status = VL53L1_DataInit(Dev);
    status = VL53L1_StaticInit(Dev);
   // status = VL53L1_SetPresetMode(Dev, VL53L1_PRESETMODE_LOWPOWER_AUTONOMOUS);
  //  status = VL53L1_SetDistanceMode(Dev, VL53L1_DISTANCEMODE_SHORT);
  //  status = VL53L1_SetMeasurementTimingBudgetMicroSeconds(Dev, 20000);
  //  status = VL53L1_SetInterMeasurementPeriodMilliSeconds(Dev, 25);
 //   status= VL53L1_set_interrupt_polarity(Dev, interrupt_polarity);
  //  status=VL53L1_SetUserROI(Dev, &roiData);
 
    status = VL53L1_SetDistanceMode(Dev, VL53L1_DISTANCEMODE_LONG);
      status = VL53L1_SetMeasurementTimingBudgetMicroSeconds(Dev, 50000);
      status = VL53L1_SetInterMeasurementPeriodMilliSeconds(Dev, 500);
      status = VL53L1_StartMeasurement(Dev);
 while (1)
    {
       
 
    
        while (!data_ready)
        {
            Task_sleep(1000);
            status = VL53L1_GetMeasurementDataReady(&dev, &data_ready);
             Log_info0("wait for data"); //<---- STUCK HERE
            if (status != 0)
            {
                while (1)
                {
 
                }
            }
        }

I digging down to code, I measure the I2C lines. The API read the 0x0031 register, and read 0x03. When API call the mask check function, this readed data should 0x01, when new data is ready.

Any suggestion any changes? All of the status has return 0, so the API I think is working.

Where can I start the debug?

Thanks for answer!

Best regards,

Richard

[John E KVAM · Accepted solution]

It's most likely still a porting issue. Your reads only access bytes, but you also need words and long words. insert the enclosed code into your main.c. It tests all combinations of IO. I'm guessing there is a byte-swap somewhere.

All that code looks good - including the commented out bits.

[RSzil]

Hy John!

Thanks for your answer, but this project is over. In the past I figured out some length calculation was wrong, but thanks for the test code.

regards,

Richard