ubxlib: nrf52840dk stops reading location data momentarily ?

Hello,

I am trying to read location data from my drotek F9P using ubxlib and nrf52840dk. Here is the code below :

#include <string.h>
#include <stdio.h>
#include <time.h>

#include "ubxlib.h"


static size_t gPositionCount = 0;

static const uDeviceCfg_t gDeviceCfg = {
    .deviceType = U_DEVICE_TYPE_GNSS,
    .deviceCfg = {
        .cfgGnss = {
            .moduleType = U_GNSS_MODULE_TYPE_M9,  // This is the module type
            .pinEnablePower = -1,
            .pinDataReady = -1
        },
    },
    .transportType = U_DEVICE_TRANSPORT_TYPE_I2C,
    .transportCfg = {
        .cfgI2c = {
            .i2c = 1, // This is the I2C HW block - ubxlib knows nothing about the device tree so you need to tell it
            .pinSda = -1,
            .pinScl = -1
        },
    },
};



// Return longitude/latitude value as string
static char *locStr(int32_t loc)
{
    static char str[25];
    const char *sign = "";
    if (loc < 0) {
        loc = -loc;
        sign = "-";
    }
    snprintf(str, sizeof(str), "%s%d.%07d",
             sign, loc / 10000000, loc % 10000000);
    return str;
}


void main()
{
   
   uDeviceHandle_t devHandle = NULL;
    int32_t returnCode;
    int32_t errorCode=0;

    int32_t guardCount = 0;

    // Initialise the APIs we will need
    uPortInit();
    uPortI2cInit(); // You only need this if an I2C interface is used
    uDeviceInit();

    returnCode=uDeviceOpen(&gDeviceCfg, &devHandle);
 uLocation_t location;

while(1){
    if (returnCode == 0) {
        // Since we are not using the common APIs we do not need
        // to call uNetworkInteraceUp()/uNetworkInteraceDown().

        // Start to get position

       
        int tries=0;


                printf(".");
                errorCode = uLocationGet(devHandle, U_LOCATION_TYPE_GNSS,
                                        NULL, NULL, &location, NULL);


        printk("error code : %d",errorCode);
        if (errorCode == 0) {
                
                printf("Position: https://maps.google.com/?q=");
                printf("%s,", locStr(location.latitudeX1e7));
                printf("%s\n", locStr(location.longitudeX1e7));
                
                
            } else if (errorCode == U_ERROR_COMMON_TIMEOUT) {
                printf("* Timeout\n");
            }

    } else {
        uPortLog("Unable to open GNSS!\n");
    }
}

    // Close the device
    // Note: we don't power the device down here in order
    // to speed up testing; you may prefer to power it off
    // by setting the second parameter to true.
    uDeviceClose(devHandle, false);

    // Tidy up
    uDeviceDeinit();
    uPortSpiDeinit(); // You only need this if an SPI interface is used
    uPortDeinit();

    uPortLog("Done.\n");

}

At first I start getting data and all seems to work fine but sometimes I stop getting data for a couple of seconds and it resumes after.

Here is the last message I see in the console before it stops. error code : 0error code : 0error code : 0

I have configured my F9P rate to 10 hz. I don’t seem to have this problem with lower frequency, It would be much appreciated if you can help me with this.