problem with the SYSTEM_DelayMs() function

[jason8098]

Hi all.
I am quite new to make custom firmwares, but trying to make a CW beacon for the Fox hunt. I was able to make a text to CW decode function and actually txing it. The function is activated by pressing F+5 (replaced instead of bandscope), then by pressing menu button to start TX. But I have encountered a few problems using with the system delay function. 

The following function is for the Text to CW encoding and Tone generation.

void PlayMorseTone(const char *morse) {
    while (*morse) {
        if (*morse == '.') {
            BK4819_TransmitTone(false, 600); /
            BK4819_ToggleGpioOut(BK4819_GPIO5_PIN1_RED, true);
            SYSTEM_DelayMs(80);
            BK4819_EnterTxMute();
        } else if (*morse == '-') {
            BK4819_TransmitTone(false, 600);
            BK4819_ToggleGpioOut(BK4819_GPIO5_PIN1_RED, true);
            SYSTEM_DelayMs(290);
            BK4819_EnterTxMute();
        } else if (*morse == ' ') {
            SYSTEM_DelayMs(790);
           
            BK4819_ToggleGpioOut(BK4819_GPIO5_PIN1_RED, false);
        } else if (*morse == '/') {
            SYSTEM_DelayMs(20);
        }
        SYSTEM_DelayMs(50);
        BK4819_ToggleGpioOut(BK4819_GPIO5_PIN1_RED, false);
        morse++;
    }
}

But since I used SYSTEM_DelayMs(), everything just freezes until the tx finishes. I've seen some countdowns used at the backlight auto off function, and i have no idea how. Basically my main goal is to run this but making it interruptable or as a background process.
Could anyone please tell me, if there's any interrupters or non-blocking delay function I could use instead? Or any better ideas?

Here is my forked repo: jason8098/uv-k5-firmware-custom-with-cw

Thanks in advance

73s

[armel]

Hello 😉

I've moved your issue to the Discussions section, as the problem you're reporting doesn't appear to be related to my firmware, but rather to your own development. I'll take a look if I get the chance, but others in the community might be able to help you in the meantime.

Have a nice day.

Armel, F4HWN

[jason8098]

Hi.
Thanks for reply and moving it here.
Also I would be really appreciated if you could give some help.

Thanks.

Kim, DS4WOF

[jason8098]

So I figured it out:

Basically, I saw a count down going on when you hold PTT and I was wondering if I could make other countdown for the morse code function. So I asked chatgpt to make one and it worked!

The details are:

First I added this set of countdown variable and the reached variable at misc.c :

volatile uint16_t gCustomCountdown_10ms     = 0;
volatile bool    gCustomTimeoutReached = false;

Then I added additional decrement function in the scheduler.c :

void SystickHandler(void)
{
.... //rest of the codes
DECREMENT_AND_TRIGGER(gCustomCountdown_10ms, gCustomTimeoutReached);
}

This will basically make decrements to the gCustomCountdown_10ms then trigger the gCustomTimeoutReached into true when the countdown is finished.

Then I made new delay function using that and replaced instead of SYSTEM_DelayMs():

void morseDelay(uint16_t tms){
        gCustomCountdown_10ms     = tms/10;   
        gCustomTimeoutReached = false;
        while (!gCustomTimeoutReached) {
            if (KEYBOARD_Poll() == KEY_EXIT) {
                txstatus=0;
                txen=false;
                isHalted=1;
            }
            if(txstatus==0){
                return;
            }
        }
}

Since the counter makes decrements every 10ms, it devides input which is in ms by 10.
then it starts the countdown. While the counter is running, it stops txing if the Exit key is pressed.

I am not sure if there's more efficient way but it's fine as long as it works haha.
Repo is updated so see here for the full codes.
Feel free to provide suggesstions if you have any.

TODO: make it configurable by chirp or in radio menu.... (have to mess up with the eeprom)

73s to Everyone!
DE DS4WOF