common/I2C/APDS9960.c

   1 // Copyright (c) 2015, Tobias Mueller tm(at)tm3d.de
   2 // All rights reserved.
   3 //
   4 // Redistribution and use in source and binary forms, with or without
   5 // modification, are permitted provided that the following conditions are
   6 // met:
   7 //
   8 //  * Redistributions of source code must retain the above copyright
   9 //    notice, this list of conditions and the following disclaimer.
  10 //  * Redistributions in binary form must reproduce the above copyright
  11 //    notice, this list of conditions and the following disclaimer in the
  12 //    documentation and/or other materials provided with the
  13 //    distribution.
  14 //  * All advertising materials mentioning features or use of this
  15 //    software must display the following acknowledgement: This product
  16 //    includes software developed by tm3d.de and its contributors.
  17 //  * Neither the name of tm3d.de nor the names of its contributors may
  18 //    be used to endorse or promote products derived from this software
  19 //    without specific prior written permission.
  20 //
  21 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  22 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  23 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  24 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  25 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  26 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  27 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  28 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  29 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  30 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  31 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  32 #define F_CPU 8000000UL
  33 #include <avr/io.h>
  34
  35 #include <util/delay.h>
  36
  37
  38 #include "USI_TWI_Master.h"
  39 #include "APDS9960.h"
  40
  41 #define WC 0b01110010
  42 #define RC 0b01110011
  43
  44 int8_t initAPDS9960() {
  45         I2c_StartCondition();
  46         I2c_WriteByte(WC);
  47         I2c_WriteByte(0x80);
  48         I2c_StartCondition();
  49         I2c_WriteByte (RC);
  50         uint8_t b1 =I2c_ReadByte(NO_ACK);
  51         I2c_StopCondition();
  52         if (b1==0xFF) return 0; else {
  53                 I2c_StartCondition();
  54                 I2c_WriteByte(WC);
  55                 I2c_WriteByte(0x80);
  56                 I2c_WriteByte(0x0B); //ALS Enable PowerON
  57                 I2c_StopCondition();
  58         }
  59         return 1;
  60 }
  61 void APDS9960setATime(uint8_t ATime) {
  62         I2c_StartCondition();
  63         I2c_WriteByte(WC);
  64         I2c_WriteByte(0x81);
  65         I2c_WriteByte(ATime);
  66         I2c_StopCondition();
  67 }
  68 void APDS9960setGain(uint8_t Gain) {
  69         I2c_StartCondition();
  70         I2c_WriteByte(WC);
  71         I2c_WriteByte(0x8F);
  72         I2c_WriteByte(Gain&0x03);
  73         I2c_StopCondition();
  74 }
  75 uint8_t APDS9960getAVALID() {return 0;}
  76 uint8_t APDS9960getASAT() {return 0;}
  77
  78 void APDS9960getRGBC(uint16_t* R,uint16_t* G,uint16_t* B,uint16_t* C) {
  79         I2c_StartCondition();
  80         I2c_WriteByte(WC);
  81         I2c_WriteByte(0x94);
  82         I2c_StartCondition();
  83         I2c_WriteByte (RC);
  84         *C=I2c_ReadByte(ACK)|I2c_ReadByte(ACK)<<8;
  85         *R=I2c_ReadByte(ACK)|I2c_ReadByte(ACK)<<8;
  86         *G=I2c_ReadByte(ACK)|I2c_ReadByte(ACK)<<8;
  87         *B=I2c_ReadByte(ACK)|I2c_ReadByte(NO_ACK)<<8;
  88         I2c_StopCondition();
  89 }
  90
  91
  92 /*
  93 uint8_t checkMAX44009(uint8_t nr) {
  94         volatile uint8_t b1;
  95         nr=(nr<<1)&0x02f;
  96
  97         I2c_StartCondition();
  98         I2c_WriteByte(0b10010100|nr);
  99         I2c_WriteByte(0x03);
 100         I2c_StartCondition();
 101         I2c_WriteByte (0b10010101|nr);
 102         b1 =I2c_ReadByte(NO_ACK);
 103         I2c_StopCondition();
 104         return b1!=0xFF;
 105
 106 }
 107
 108
 109 double MAX44009getlux(uint8_t nr)  {
 110         volatile uint8_t b1,b2;
 111         nr=(nr<<1)&0x02f;
 112
 113         I2c_StartCondition();
 114         I2c_WriteByte(0b10010100|nr);
 115         I2c_WriteByte(0x03);
 116         I2c_StartCondition();
 117         I2c_WriteByte (0b10010101|nr);
 118         b1 =I2c_ReadByte(NO_ACK);
 119         I2c_StopCondition();
 120         I2c_StartCondition();
 121         I2c_WriteByte(0b10010100|nr);
 122         I2c_WriteByte(0x04);
 123         I2c_StartCondition();
 124         I2c_WriteByte (0b10010101|nr);
 125         b2 =I2c_ReadByte(NO_ACK);
 126         I2c_StopCondition();
 127         uint8_t exponent = (b1 & 0xF0) >> 4;// upper four bits of high byte register
 128         uint8_t mantissa = (b1 & 0x0F) << 4;// lower four bits of high byte register =
 129         // upper four bits of mantissa
 130         mantissa += b2 & 0x0F;    // lower four bits of low byte register =
 131         // lower four bits of mantissa
 132
 133         return (double)mantissa * (double)(1 << (uint16_t)exponent) * 0.045;
 134
 135
 136
 137 }
 138 */