Code: How to change transmitter settings

[markusb]

I'm in the process of creating an additional feature to send the alpine REGA distress signal. This is a five digit ZVEI sequence, sent on a specific frequency. The aim is to send a reque alert to the REGA network. Further communication is like normal radio traffic on the same frequency. There is also a CTCSS tone squelch in use.

My code will have two entry points 'REGA Alert' and 'REGA Test', assignable to any configurable button, like button2 long press. Triggering the function should change to the special frequency, set the CTCSS parameter, put the transmitter in high power, send out the ZVEI sequence and leave the transmitter in the same settings for further communication.

I found the function calls and stitched something together, which partially works. I can set the radio parameters and send out the ZVEI, but the settings dont stick, the radio falls back on the settings before the alert call.

Here my actual code, hacked together, but only partially working.

• The ZVEI is sent out on the correct frequency

• The change to frequency, power, etc. are not persistant
• How can I display a message on the LCD, what I tried below does not work

    // Set the frequency to 161,300 Mhz
    gTxVfo->freq_config_RX.Frequency = REGA_FREQUENCY;
    gCurrentVfo->pTX->Frequency = REGA_FREQUENCY;
    BK4819_SetFrequency(REGA_FREQUENCY);

    // Set the modulation to FM narrow, no offset
    gTxVfo->Modulation = MODULATION_FM;
    gTxVfo->CHANNEL_BANDWIDTH = BK4819_FILTER_BW_NARROW;
    ACTION_Remove_Offset();

    // Set Squelch Tone
    BK4819_SetCTCSSFrequency(REGA_CTCSS);

    // Set the transmit power to high
    ACTION_Power_High();

    // Display message
    UI_DisplayClear();
    UI_PrintString(message0, 0, 127, 0, 10);
    UI_PrintString(message1, 0, 127, 2, 10);

    // Set the radio to transmit mode
    RADIO_PrepareCssTX();

    // Wait to allow the radio to switch to transmit mode and stabilize the transmitter
    SYSTEM_DelayMs(ZVEI_PRE_LENGTH_MS);

    // Send out the ZVEI2 tone sequence
    for (int i = 0; i < ZVEI_NUM_TONES; i++)
    {
        BK4819_PlaySingleTone(tones[i], ZVEI_TONE_LENGTH_MS, 100, true);
        SYSTEM_DelayMs(ZVEI_PAUSE_LENGTH_MS);
    }

    // Wait to allow the radio to finish transmitting
    SYSTEM_DelayMs(ZVEI_POST_LENGTH_MS);