static int PollAdc()

in CodeSnippets/Peripherals/ADC/AdvancedFunctions/advanced_functions.c [351:372]

• 19 lines of code
• 3 McCabe index (conditional complexity)

static int PollAdc(int adcControllerFd, ADC_ChannelId channelId, uint32_t *outSampleValue)
{
    if (adcControllerFd < 0) {
        Log_Debug("ERROR: Invalid file descriptor.\n");
        return -1;
    }

    struct iio_ioctl_raw_channel_info rawChannelInfo = {
        .size = sizeof(rawChannelInfo), .index = (int)(channelId), .mask = IIO_IOCTL_CHAN_INFO_RAW};

    int result = ioctl(adcControllerFd, (int)IIO_READ_RAW_CHANNEL_INFO_IOCTL, &rawChannelInfo);
    if (result < 0) {
        Log_Debug(
            "ERROR: ioctl call failed with error \"%s (%d)\" for request "
            "IIO_READ_RAW_CHANNEL_INFO_IOCTL.\n",
            strerror(errno), errno);
        return -1;
    }

    *outSampleValue = (uint32_t)(rawChannelInfo.val);
    return 0;
}