common/I2C/APDS9960.c

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