La Suno / Mbed 2 deprecated afero_poc15_180223

Color sensor reset at the end of calibration added. sensor id auto assignment was changed to be a fixed value assignment to avoid sensor id shift when some sensor is absent.

Dependencies:   UniGraphic mbed vt100

sensors/SMTC502AT.cpp@1:8818b793d147, 2018-02-23 (annotated)

Committer:
Rhyme
Date:
Fri Feb 23 07:51:55 2018 +0000
Revision:
1:8818b793d147
Parent:
0:ce97f6d34336 
Wrong behavior when one of color sensor is missing has been fixed.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Rhyme 0:ce97f6d34336 1 #include "mbed.h"
Rhyme 0:ce97f6d34336 2 #include "SMTC502AT.h"
Rhyme 0:ce97f6d34336 3
Rhyme 0:ce97f6d34336 4 SMTC502AT::SMTC502AT(AnalogIn *ain, float R0, float R1, float B, float T0)
Rhyme 0:ce97f6d34336 5 {
Rhyme 0:ce97f6d34336 6 _ain = ain ;
Rhyme 0:ce97f6d34336 7 _r0 = R0 ;
Rhyme 0:ce97f6d34336 8 _r1 = R1 ;
Rhyme 0:ce97f6d34336 9 _b = B ;
Rhyme 0:ce97f6d34336 10 _t0 = T0 ;
Rhyme 0:ce97f6d34336 11 }
Rhyme 0:ce97f6d34336 12
Rhyme 0:ce97f6d34336 13 SMTC502AT::~SMTC502AT(void)
Rhyme 0:ce97f6d34336 14 {
Rhyme 0:ce97f6d34336 15 if (_ain) {
Rhyme 0:ce97f6d34336 16 delete _ain ;
Rhyme 0:ce97f6d34336 17 }
Rhyme 0:ce97f6d34336 18 }
Rhyme 0:ce97f6d34336 19
Rhyme 0:ce97f6d34336 20 /**
Rhyme 0:ce97f6d34336 21 * getTemp returns the temperature
Rhyme 0:ce97f6d34336 22 * operational temperature is -50C to +105C
Rhyme 0:ce97f6d34336 23 */
Rhyme 0:ce97f6d34336 24 float SMTC502AT::getTemp(void)
Rhyme 0:ce97f6d34336 25 {
Rhyme 0:ce97f6d34336 26 float result = 0.0 ;
Rhyme 0:ce97f6d34336 27 float f, raw, rr1, t ;
Rhyme 0:ce97f6d34336 28 if (_ain) {
Rhyme 0:ce97f6d34336 29 f = _ain->read() ;
Rhyme 0:ce97f6d34336 30 #if 0
Rhyme 0:ce97f6d34336 31 if (f < 0.087) { /* +105C */
Rhyme 0:ce97f6d34336 32 printf("Temp is Too high or the sensor is absent\n") ;
Rhyme 0:ce97f6d34336 33 f = 0.087 ;
Rhyme 0:ce97f6d34336 34 }
Rhyme 0:ce97f6d34336 35 if (f > 0.978) { /* -50C */
Rhyme 0:ce97f6d34336 36 printf("Temp is Too low or the sensor encountered a problem\n") ;
Rhyme 0:ce97f6d34336 37 f = 0.978 ;
Rhyme 0:ce97f6d34336 38 }
Rhyme 0:ce97f6d34336 39 #endif
Rhyme 0:ce97f6d34336 40 raw = f * 3.3 ;
Rhyme 0:ce97f6d34336 41 rr1 = _r1 * raw / (3.3 - raw) ;
Rhyme 0:ce97f6d34336 42 t = 1.0 / (log(rr1 / _r0) / _b + (1/_t0)) ;
Rhyme 0:ce97f6d34336 43 result = t - 273.15 ;
Rhyme 0:ce97f6d34336 44 }
Rhyme 0:ce97f6d34336 45 return( result ) ;
Rhyme 0:ce97f6d34336 46 }
Rhyme 0:ce97f6d34336 47