Implement continuous mode

[binomaiheu]

Figure out how to propery handle the continuous mode & drdy pin, what goes in the library, what is µP responsibility

[SndrSchnklshk]

Would be good addition! Any update on that?

[binomaiheu]

Hi @SndrSchnklshk, thanks for your interest.I believe in the original library, which is partly based this on the continuous mode was implemented (https://github.com/OM222O/ADS1219/) using the interrupt. I wanted to poll the status register instead, hence i coded this up here, but I'll try to see if I can look at it the coming weeks (a bit busy at the moment :-s)

[SndrSchnklshk]

Thanks for your reply. I also prefer to go for a polling-option.

If you got time; If feel it's not that hard if you just make sure to call the start/sync command once (ADS1219_CMD_START_SYNC).

After that, read the conversion results (from external loop/core/task), something like (make sure to take the start/sync command out of the read method):

int32_t ADS1219::readAvailableValue(uint8_t channel, uint8_t *err_code)
{
    uint8_t mux;
    switch (channel)
    {
    case 0:
        mux = ADS1219_MUX_SINGLE_0;
        break;
    case 1:
        mux = ADS1219_MUX_SINGLE_1;
        break;
    case 2:
        mux = ADS1219_MUX_SINGLE_2;
        break;
    case 3:
        mux = ADS1219_MUX_SINGLE_3;
        break;
    default:
        *err_code = ADS1219_INVALID_MUX;
        return 0x80000000;
    }
    *err_code = _modify_register(mux, ADS1219_CONFIG_MASK_MUX);
    if (*err_code)
        return 0x80000001;
    bool ready = false;
    delay(getConversionTime());
    unsigned long tstart = millis();
    while (!ready && ((millis() - tstart) < _timeout_ms))
    {
        delay(2);
        ready = conversionReady(err_code);
    }
    return _read_value(err_code);
}

Maybe it's useful ;)