static int OpenAdc()

in CodeSnippets/Peripherals/ADC/LinuxSysfsNodes/linux_sysfs_nodes.c [69:88]

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

static int OpenAdc(int adcChannel)
{
    // Format the path for the channel.
    char path[128];
    int len = snprintf(path, sizeof(path), "%sin_voltage%d_raw", iioSysPath, adcChannel);
    if (len < 0 || len >= sizeof(path)) {
        fprintf(stderr, "ERROR: Cannot format ADC path to buffer.\n");
        return -1;
    }

    int fd = open(path, O_RDONLY);
    if (fd == -1) {
        fprintf(stderr, "ERROR: OpenAdc failed with error: %s (%d) for path %s.\n", strerror(errno),
                errno,
               path);
        return -1;
    }

    return fd;
}