Michael Wilkens / libTCS34725

Basic library for the TCS34725, based off of several example programs and the Adafruit Arduino library

Dependents:   MF_FUJIKO_BASE STEM_2019 STEM_2020

TCS34725.cpp@3:afb107db7994, 2017-01-25 (annotated)

Committer:
mwilkens241
Date:
Wed Jan 25 20:17:57 2017 +0000
Revision:
3:afb107db7994
Parent:
2:cc2c0831a763
Child:
4:41f1acad69e5
class-ified library and added docs

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mwilkens241 0:4796574af790 1 #include "TCS34725.h"
mwilkens241 0:4796574af790 2
mwilkens241 3:afb107db7994 3 TCS34725::TCS34725() : i2c(SDA,SCL) {}
mwilkens241 3:afb107db7994 4 TCS34725::TCS34725(PinName i2c_sda, PinName i2c_scl) : i2c(i2c_sda,i2c_scl) {}
mwilkens241 1:06c9bbbdb8b0 5
mwilkens241 3:afb107db7994 6 void TCS34725::i2cWrite8(uint8_t addr, char reg, char data){
mwilkens241 2:cc2c0831a763 7 char packet[2] = {reg | COMMAND_BIT ,data & 0xFF};
mwilkens241 1:06c9bbbdb8b0 8 i2c.write(addr,packet,2,false);
mwilkens241 2:cc2c0831a763 9 wait(0.01);
mwilkens241 0:4796574af790 10 }
mwilkens241 0:4796574af790 11
mwilkens241 3:afb107db7994 12 uint8_t TCS34725::i2cRead8(uint8_t addr, char reg){
mwilkens241 2:cc2c0831a763 13 char packet[1] = {reg | COMMAND_BIT};
mwilkens241 1:06c9bbbdb8b0 14 char data[1] = {0};
mwilkens241 1:06c9bbbdb8b0 15 i2c.write(addr,packet,1, true);
mwilkens241 1:06c9bbbdb8b0 16 i2c.read(addr,data,1,false);
mwilkens241 1:06c9bbbdb8b0 17 return (uint8_t)data[0];
mwilkens241 0:4796574af790 18 }
mwilkens241 0:4796574af790 19
mwilkens241 3:afb107db7994 20 uint16_t TCS34725::i2cRead16(uint8_t addr, char reg){
mwilkens241 2:cc2c0831a763 21 char packet[1] = {reg | COMMAND_BIT};
mwilkens241 1:06c9bbbdb8b0 22 char data[2] = {0,0};
mwilkens241 1:06c9bbbdb8b0 23 i2c.write(addr,packet,1, true);
mwilkens241 1:06c9bbbdb8b0 24 i2c.read(addr,data,2, false);
mwilkens241 1:06c9bbbdb8b0 25 return ((uint16_t)data[1] << 8) | (uint16_t)data[0];
mwilkens241 0:4796574af790 26 }
mwilkens241 0:4796574af790 27
mwilkens241 3:afb107db7994 28 bool TCS34725::init(char intTime, char gain){
mwilkens241 1:06c9bbbdb8b0 29 i2c.frequency(400000);
mwilkens241 1:06c9bbbdb8b0 30
mwilkens241 1:06c9bbbdb8b0 31 uint8_t id = i2cRead8(SENSOR_ADDR, TCS34725_ID);
mwilkens241 1:06c9bbbdb8b0 32 if(id != 0x44)return false;
mwilkens241 0:4796574af790 33
mwilkens241 1:06c9bbbdb8b0 34 i2cWrite8(SENSOR_ADDR,TCS34725_ATIME, intTime);
mwilkens241 2:cc2c0831a763 35 t_intTime = intTime;
mwilkens241 1:06c9bbbdb8b0 36 i2cWrite8(SENSOR_ADDR,TCS34725_CONTROL, gain);
mwilkens241 2:cc2c0831a763 37 t_gain = gain;
mwilkens241 1:06c9bbbdb8b0 38 i2cWrite8(SENSOR_ADDR,TCS34725_ENABLE, TCS34725_ENABLE_PON);
mwilkens241 1:06c9bbbdb8b0 39 wait(0.003);
mwilkens241 1:06c9bbbdb8b0 40 i2cWrite8(SENSOR_ADDR,TCS34725_ENABLE, TCS34725_ENABLE_PON | TCS34725_ENABLE_AEN);
mwilkens241 1:06c9bbbdb8b0 41 return true;
mwilkens241 0:4796574af790 42 }
mwilkens241 0:4796574af790 43
mwilkens241 3:afb107db7994 44 void TCS34725::config(char intTime, char gain){
mwilkens241 1:06c9bbbdb8b0 45 uint8_t reg = i2cRead8(SENSOR_ADDR, TCS34725_ENABLE);
mwilkens241 1:06c9bbbdb8b0 46 i2cWrite8(SENSOR_ADDR,TCS34725_ENABLE, reg | ~(TCS34725_ENABLE_PON | TCS34725_ENABLE_AEN));
mwilkens241 3:afb107db7994 47 init(intTime,gain);
mwilkens241 1:06c9bbbdb8b0 48 }
mwilkens241 1:06c9bbbdb8b0 49
mwilkens241 3:afb107db7994 50 void TCS34725::getColor(uint16_t *r, uint16_t *g, uint16_t *b, uint16_t *c){
mwilkens241 1:06c9bbbdb8b0 51 *c = i2cRead16(SENSOR_ADDR, TCS34725_CDATAL);
mwilkens241 1:06c9bbbdb8b0 52 *r = i2cRead16(SENSOR_ADDR, TCS34725_RDATAL);
mwilkens241 1:06c9bbbdb8b0 53 *g = i2cRead16(SENSOR_ADDR, TCS34725_GDATAL);
mwilkens241 1:06c9bbbdb8b0 54 *b = i2cRead16(SENSOR_ADDR, TCS34725_BDATAL);
mwilkens241 2:cc2c0831a763 55 switch(t_intTime){
mwilkens241 2:cc2c0831a763 56 case TCS34725_INTEGRATIONTIME_2_4MS:
mwilkens241 2:cc2c0831a763 57 wait(0.003);
mwilkens241 2:cc2c0831a763 58 break;
mwilkens241 2:cc2c0831a763 59 case TCS34725_INTEGRATIONTIME_24MS:
mwilkens241 2:cc2c0831a763 60 wait(0.024);
mwilkens241 2:cc2c0831a763 61 break;
mwilkens241 2:cc2c0831a763 62 case TCS34725_INTEGRATIONTIME_50MS:
mwilkens241 2:cc2c0831a763 63 wait(0.05);
mwilkens241 2:cc2c0831a763 64 break;
mwilkens241 2:cc2c0831a763 65 case TCS34725_INTEGRATIONTIME_101MS:
mwilkens241 2:cc2c0831a763 66 wait(0.101);
mwilkens241 2:cc2c0831a763 67 break;
mwilkens241 2:cc2c0831a763 68 case TCS34725_INTEGRATIONTIME_154MS:
mwilkens241 2:cc2c0831a763 69 wait(0.154);
mwilkens241 2:cc2c0831a763 70 break;
mwilkens241 2:cc2c0831a763 71 case TCS34725_INTEGRATIONTIME_700MS:
mwilkens241 2:cc2c0831a763 72 wait(0.7);
mwilkens241 2:cc2c0831a763 73 break;
mwilkens241 2:cc2c0831a763 74 }
mwilkens241 2:cc2c0831a763 75 }
mwilkens241 2:cc2c0831a763 76
mwilkens241 3:afb107db7994 77 void TCS34725::DEBUG(Serial * deb){
mwilkens241 2:cc2c0831a763 78 deb->printf("ATIME:%d ENABLE:%d CONTROL:%d ID:%d\n",
mwilkens241 2:cc2c0831a763 79 i2cRead8(SENSOR_ADDR, TCS34725_ATIME),
mwilkens241 2:cc2c0831a763 80 i2cRead8(SENSOR_ADDR, TCS34725_ENABLE),
mwilkens241 2:cc2c0831a763 81 i2cRead8(SENSOR_ADDR, TCS34725_CONTROL),
mwilkens241 2:cc2c0831a763 82 i2cRead16(SENSOR_ADDR, TCS34725_ID));
mwilkens241 0:4796574af790 83 }