• IOCTL_READ_RANGE : evarobot_sonar.h
• IOCTL_SET_PARAM : evarobot_sonar.h
• MAX_SONAR : evarobot_sonar.h
• MAX_TRIGGER_TIME : evarobot_sonar.h
• SNRDRIVER_IOCTL_BASE : evarobot_sonar.h