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);

[jjb068]

@markusb Looking for same application and would like to use egzumer mod for same purpose. Hope you found this working or solved? Seems IJV got this function?

[markusb]

I got around and found a solution for my problem.

Check out my fork with the new app/rega.c file and its REGA_TransmitZvei function. It reconfigures the transmitter as desired.

The main issue was to figure out how to handle the state machine.

https://github.com/markusb/uv-k5-firmware-custom

[jjb068]

Ah that sounds good! Sorry but I'm new here and to this subject. I even have to find out what a "fork of Egzumer" is and haven't used Egzumer before. Does that mean a second, modified or custom version of an existing Egzumer version?
...(update)Managed to download a custom .bin file using Github Codespace build method and Rega activated. It's not exactly clear to me how to activate the side-buttons for Rega however and don't want to mess too much with it, to prevent unwanted use. Saw there's also a specific rescueops version now, (which is not being meant in the instructions however). Great idea!

Like to combine the rescue function with the use of regular PMR channels in same device. Still have to find out how I should load these channels. Saw the need of special drivers for Chirp for this FW-mod. Hope they work with MacOS.....