Sample code for GNSS constellation selection

//--------------------------------------------------------------------------------------------------
/**
 * Test: GNSS Position request.
 *
 */
//--------------------------------------------------------------------------------------------------
static void TestLeGnssStart
(
    void
)
{
    uint32_t rate = 0;
    le_gnss_ConstellationBitMask_t constellationMask;
    le_gnss_NmeaBitMask_t nmeaMask;
    uint32_t ttff = 0;
    le_result_t result = LE_FAULT;
 
 
    LE_TEST_INFO("Start Test Testle_gnss_StartTest");
 
    LE_TEST_BEGIN_SKIP(!LINUX_OS, 2);
    LE_TEST_OK(le_gnss_GetAcquisitionRate(&rate) == LE_OK, "Get acquisition rate");
    LE_TEST_INFO("Acquisition rate %d ms", rate);
    LE_TEST_OK(le_gnss_SetAcquisitionRate(rate) == LE_OK, "Set acquisition rate");
    LE_TEST_END_SKIP();
 
    LE_TEST_OK(le_gnss_GetConstellation(&constellationMask) == LE_OK, "Get constellation");
    LE_TEST_INFO("Constellation 0x%X", constellationMask);
    LE_TEST_OK(le_gnss_SetConstellation(constellationMask) == LE_OK, "Set constellation");
 
    LE_TEST_OK((le_gnss_GetNmeaSentences(&nmeaMask)) == LE_OK, "Get NMEA sentences");
    LE_TEST_INFO("Enabled NMEA sentences 0x%08X", nmeaMask);
    LE_TEST_OK((le_gnss_SetNmeaSentences(nmeaMask)) == LE_OK, "Set NMEA sentences");
 
    LE_TEST_INFO("Start GNSS");
    LE_TEST_ASSERT((le_gnss_Start()) == LE_OK, "Start GNSS");
 
    /* Wait for a position fix */
    LE_TEST_INFO("Wait 120 seconds for a 3D fix");
    le_thread_Sleep(120);
 
    // Get TTFF
    result = le_gnss_GetTtff(&ttff);
    LE_TEST_OK((result == LE_OK) || (result == LE_BUSY), "Get TTFF");
    if(result == LE_OK)
    {
        LE_TEST_INFO("TTFF start = %d msec", ttff);
    }
    else
    {
        LE_TEST_INFO("TTFF start not available");
    }
 
    LE_TEST_INFO("Stop GNSS");
    LE_TEST_OK((le_gnss_Stop()) == LE_OK, "Stop GNSS");
 
    // Test le_gnss_StartMode()
    // HOT start
    LE_TEST_INFO("Ask for a Hot start in 3 seconds...");
    le_thread_Sleep(3);
    LE_TEST_OK(le_gnss_StartMode(LE_GNSS_UNKNOWN_START) == LE_BAD_PARAMETER, "Hot start");
 
    LE_TEST_ASSERT((le_gnss_StartMode(LE_GNSS_HOT_START)) == LE_OK, "le_gnss_StartMode(Hot start)");
 
    // Wait 5 sec
    le_thread_Sleep(5);
    // Stop GNSS engine
    LE_TEST_ASSERT((le_gnss_Stop()) == LE_OK, "Stop GNSS");
 
    /* WARM start */
    LE_TEST_INFO("Ask for a Warm start in 3 seconds...");
    le_thread_Sleep(3);
    LE_TEST_ASSERT((le_gnss_StartMode(LE_GNSS_WARM_START)) == LE_OK,
                   "le_gnss_StartMode(Warm start)");
 
    // Wait 5 sec
    le_thread_Sleep(5);
    // Stop GNSS engine
    LE_TEST_ASSERT((le_gnss_Stop()) == LE_OK, "Stop GNSS");
 
    /* COLD Restart */
    LE_TEST_INFO("Ask for a Cold start in 3 seconds...");
    le_thread_Sleep(3);
    LE_TEST_ASSERT((le_gnss_StartMode(LE_GNSS_COLD_START)) == LE_OK,
                   "le_gnss_StartMode(Cold start)");
 
    // Wait 5 sec
    le_thread_Sleep(5);
    // Stop GNSS engine
    LE_TEST_ASSERT((le_gnss_Stop()) == LE_OK, "Stop GNSS");
 
    // FACTORY start
    LE_TEST_INFO("Ask for a Factory start in 3 seconds...");
    le_thread_Sleep(3);
    LE_TEST_ASSERT((le_gnss_StartMode(LE_GNSS_FACTORY_START)) == LE_OK,
                   "le_gnss_StartMode(Factory start)");
 
    // Wait 5 sec
    le_thread_Sleep(5);
    // Stop GNSS engine
    LE_TEST_ASSERT((le_gnss_Stop()) == LE_OK, "Stop GNSS");
 
    LE_TEST_BEGIN_SKIP(LINUX_OS, 6);
    LE_TEST_OK(LE_OK == le_gnss_EnableExternalLna(), "Enable external LNA");
    LE_TEST_ASSERT(LE_OK == le_gnss_Start(), "Start GNSS");
    LE_TEST_INFO("GNSS running, confirm EXT_GPS_LNA_EN signal is high");
    LE_TEST_INFO("Wait 30 seconds");
    le_thread_Sleep(30);
 
    LE_TEST_OK(LE_NOT_PERMITTED == le_gnss_DisableExternalLna(),
               "Try to disable LNA when GNSS active");
    LE_TEST_OK(LE_NOT_PERMITTED == le_gnss_EnableExternalLna(),
               "Try to enable LNA when GNSS active");
 
    LE_TEST_ASSERT(LE_OK == le_gnss_Stop(), "Start GNSS");
    LE_TEST_OK(LE_OK == le_gnss_DisableExternalLna(), "Disable external LNA");
    LE_TEST_END_SKIP();
 
    EpochTime=0;
    TimeAccuracy=0;
}