IRDistance.h File Reference

Take infrared distance measurements. More...

#include <stdint.h>

Go to the source code of this file.

Functions
int32_t	IRDistance_Convert (int32_t adcSample, uint32_t sensor)
	Convert infrared distance measurement. More...

Detailed Description

Take infrared distance measurements.

Provide mid-level functions that convert raw ADC values from the GP2Y0A21YK0F infrared distance sensors to distances in mm.

Version

derived from TI-RSLK MAX v1.1

Author

Daniel Valvano and Jonathan Valvano

Copyright

Copyright 2020 by Jonathan W. Valvano, valva.nosp@m.no@m.nosp@m.ail.u.nosp@m.texa.nosp@m.s.edu,

Warning

AS-IS

Note

For more information see http://users.ece.utexas.edu/~valvano/

Date

January 15, 2020

Function Documentation

IRDistance_Convert()

int32_t IRDistance_Convert	(	int32_t	adcSample,
		uint32_t	sensor
	)

Convert infrared distance measurement.

Convert ADC sample into distance for the GP2Y0A21YK0F infrared distance sensor. Conversion uses a calibration formula
D = A/(adcSample + B) + C

Parameters

adcSample	is the 12-bit ADC sample 0 to 4095
sensor	is sensor number 0 to 3

Returns

distance from robot to wall (units mm)