static bool IsButtonPressed()

in Tutorials/ErrorReporting/Stage2/main.c [195:210]

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

static bool IsButtonPressed(int fd, GPIO_Value_Type *oldState)
{
    bool isButtonPressed = false;
    GPIO_Value_Type newState;
    int result = GPIO_GetValue(fd, &newState);
    if (result != 0) {
        Log_Debug("ERROR: Could not read button GPIO: %s (%d).\n", strerror(errno), errno);
        exitCode = ExitCode_ButtonTimer_GetButtonState;
    } else {
        // Button is pressed if it is low and different than last known state.
        isButtonPressed = (newState != *oldState) && (newState == GPIO_Value_Low);
        *oldState = newState;
    }

    return isButtonPressed;
}