Andrea Corrado / TSL2561

for EVK odin mbed os 5.5

Dependents:   Mbed-Connect-Cloud-Demo Mbed-Connect-Cloud-Demo HTTP-all-sensors mbed-cloud-connect-sensor-light ... more

Fork of TSL2561 by Tuan Anh Nguyen

TSL2561.cpp@4:8146a28a20cc, 2017-10-23 (annotated)

Committer:
andcor02
Date:
Mon Oct 23 19:34:05 2017 +0000
Revision:
4:8146a28a20cc
Parent:
3:8450950ca50b 
removed UART;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
anhnt2407 0:df9baf6459b7 1 #include "TSL2561.h"
anhnt2407 1:ab906ac6e90b 2 #include "mbed.h"
anhnt2407 0:df9baf6459b7 3 TSL2561::TSL2561():i2c(TSL2561_I2C_PINNAME_SDA,TSL2561_I2C_PINNAME_SCL){
anhnt2407 0:df9baf6459b7 4 i2c.frequency (300);
anhnt2407 1:ab906ac6e90b 5 _addr = TSL2561_ADDR_FLOAT;
anhnt2407 0:df9baf6459b7 6 _initialized = false;
anhnt2407 0:df9baf6459b7 7 _integration = TSL2561_INTEGRATIONTIME_13MS;
andcor02 4:8146a28a20cc 8 _gain = TSL2561_GAIN_16X;
anhnt2407 0:df9baf6459b7 9 }
anhnt2407 0:df9baf6459b7 10 TSL2561::TSL2561(uint8_t addr):i2c(TSL2561_I2C_PINNAME_SDA,TSL2561_I2C_PINNAME_SCL) {
anhnt2407 1:ab906ac6e90b 11 _addr = addr;
anhnt2407 0:df9baf6459b7 12 _initialized = false;
anhnt2407 0:df9baf6459b7 13 _integration = TSL2561_INTEGRATIONTIME_13MS;
anhnt2407 0:df9baf6459b7 14 _gain = TSL2561_GAIN_16X;
anhnt2407 0:df9baf6459b7 15 // we cant do wire initialization till later, because we havent loaded Wire yet
anhnt2407 0:df9baf6459b7 16 }
anhnt2407 0:df9baf6459b7 17 TSL2561::TSL2561(PinName sda, PinName scl):i2c(sda, scl) {
anhnt2407 1:ab906ac6e90b 18 _addr = TSL2561_ADDR_FLOAT;
anhnt2407 0:df9baf6459b7 19 _initialized = false;
anhnt2407 0:df9baf6459b7 20 _integration = TSL2561_INTEGRATIONTIME_13MS;
anhnt2407 0:df9baf6459b7 21 _gain = TSL2561_GAIN_16X;
anhnt2407 0:df9baf6459b7 22 // we cant do wire initialization till later, because we havent loaded Wire yet
anhnt2407 0:df9baf6459b7 23 }
anhnt2407 0:df9baf6459b7 24 TSL2561::TSL2561(PinName sda, PinName scl, uint8_t addr):i2c(sda, scl) {
anhnt2407 1:ab906ac6e90b 25 _addr = addr;
anhnt2407 0:df9baf6459b7 26 _initialized = false;
anhnt2407 0:df9baf6459b7 27 _integration = TSL2561_INTEGRATIONTIME_13MS;
anhnt2407 0:df9baf6459b7 28 _gain = TSL2561_GAIN_16X;
anhnt2407 0:df9baf6459b7 29 // we cant do wire initialization till later, because we havent loaded Wire yet
anhnt2407 0:df9baf6459b7 30 }
anhnt2407 0:df9baf6459b7 31 uint16_t TSL2561::getLuminosity (uint8_t channel) {
anhnt2407 0:df9baf6459b7 32 uint32_t x = getFullLuminosity();
anhnt2407 0:df9baf6459b7 33 if (channel == 0) {
anhnt2407 0:df9baf6459b7 34 // Reads two byte value from channel 0 (visible + infrared)
anhnt2407 0:df9baf6459b7 35 return (x & 0xFFFF);
anhnt2407 0:df9baf6459b7 36 } else if (channel == 1) {
anhnt2407 0:df9baf6459b7 37 // Reads two byte value from channel 1 (infrared)
anhnt2407 0:df9baf6459b7 38 return (x >> 16);
anhnt2407 0:df9baf6459b7 39 } else if (channel == 2) {
anhnt2407 0:df9baf6459b7 40 // Reads all and subtracts out just the visible!
anhnt2407 1:ab906ac6e90b 41 return ( (x & 0xFFFF) - (x >> 16) );
anhnt2407 0:df9baf6459b7 42 }
anhnt2407 0:df9baf6459b7 43 // unknown channel!
anhnt2407 0:df9baf6459b7 44 return 0;
anhnt2407 0:df9baf6459b7 45 }
anhnt2407 0:df9baf6459b7 46 uint32_t TSL2561::getFullLuminosity (void)
anhnt2407 0:df9baf6459b7 47 {
anhnt2407 0:df9baf6459b7 48 if (!_initialized) begin();
anhnt2407 0:df9baf6459b7 49 // Enable the device by setting the control bit to 0x03
anhnt2407 0:df9baf6459b7 50 enable();
anhnt2407 0:df9baf6459b7 51 // Wait x ms for ADC to complete
anhnt2407 0:df9baf6459b7 52 switch (_integration)
anhnt2407 0:df9baf6459b7 53 {
anhnt2407 0:df9baf6459b7 54 case TSL2561_INTEGRATIONTIME_13MS:
anhnt2407 0:df9baf6459b7 55 wait_ms(14);
anhnt2407 0:df9baf6459b7 56 break;
anhnt2407 0:df9baf6459b7 57 case TSL2561_INTEGRATIONTIME_101MS:
anhnt2407 0:df9baf6459b7 58 wait_ms(102);
anhnt2407 0:df9baf6459b7 59 break;
anhnt2407 0:df9baf6459b7 60 default:
andcor02 3:8450950ca50b 61 wait_ms(450);
anhnt2407 0:df9baf6459b7 62 break;
anhnt2407 0:df9baf6459b7 63 }
anhnt2407 0:df9baf6459b7 64 uint32_t x;
anhnt2407 0:df9baf6459b7 65 x = read16(TSL2561_COMMAND_BIT | TSL2561_WORD_BIT | TSL2561_REGISTER_CHAN1_LOW);
anhnt2407 0:df9baf6459b7 66 x <<= 16;
anhnt2407 0:df9baf6459b7 67 x |= read16(TSL2561_COMMAND_BIT | TSL2561_WORD_BIT | TSL2561_REGISTER_CHAN0_LOW);
anhnt2407 1:ab906ac6e90b 68 //wait(3);
anhnt2407 0:df9baf6459b7 69 disable();
anhnt2407 0:df9baf6459b7 70 return x;
anhnt2407 0:df9baf6459b7 71 }
anhnt2407 0:df9baf6459b7 72 bool TSL2561::begin(void) {
anhnt2407 1:ab906ac6e90b 73 char reg[1];
anhnt2407 1:ab906ac6e90b 74 reg[0] = TSL2561_REGISTER_ID;
anhnt2407 1:ab906ac6e90b 75 char receivedata[1];
andcor02 4:8146a28a20cc 76 char read;
anhnt2407 1:ab906ac6e90b 77 i2c.write(_addr<<1, reg, 1);
anhnt2407 1:ab906ac6e90b 78 i2c.read(_addr<<1, receivedata, 1);
anhnt2407 1:ab906ac6e90b 79 read=receivedata[0];
anhnt2407 0:df9baf6459b7 80 if (read & 0x0A ) {
anhnt2407 0:df9baf6459b7 81 } else {
anhnt2407 0:df9baf6459b7 82 return false;
andcor02 4:8146a28a20cc 83 }
anhnt2407 0:df9baf6459b7 84 _initialized = true;
anhnt2407 0:df9baf6459b7 85 // Set default integration time and gain
anhnt2407 0:df9baf6459b7 86 setTiming(_integration);
anhnt2407 0:df9baf6459b7 87 setGain(_gain);
anhnt2407 0:df9baf6459b7 88 // Note: by default, the device is in power down mode on bootup
andcor02 4:8146a28a20cc 89 disable();
anhnt2407 0:df9baf6459b7 90 return true;
anhnt2407 0:df9baf6459b7 91 }
anhnt2407 0:df9baf6459b7 92 uint16_t TSL2561::read16(uint8_t reg)
anhnt2407 0:df9baf6459b7 93 {
andcor02 4:8146a28a20cc 94 uint16_t x;
anhnt2407 1:ab906ac6e90b 95 uint16_t t;
anhnt2407 1:ab906ac6e90b 96 char _x;
anhnt2407 1:ab906ac6e90b 97 char _t;
anhnt2407 1:ab906ac6e90b 98 char r[1];
anhnt2407 0:df9baf6459b7 99 r[0] = reg;
anhnt2407 1:ab906ac6e90b 100 char receivedata[2];
anhnt2407 1:ab906ac6e90b 101 i2c.write(_addr<<1, r, 1);
andcor02 4:8146a28a20cc 102 i2c.read(_addr<<1, receivedata, 2);
anhnt2407 1:ab906ac6e90b 103 _t=receivedata[0];
anhnt2407 1:ab906ac6e90b 104 _x=receivedata[1];
anhnt2407 1:ab906ac6e90b 105 t=(uint16_t)_t;
anhnt2407 1:ab906ac6e90b 106 x=(uint16_t)_x;
anhnt2407 0:df9baf6459b7 107 x <<= 8;
anhnt2407 0:df9baf6459b7 108 x |= t;
anhnt2407 0:df9baf6459b7 109 return x;
anhnt2407 0:df9baf6459b7 110 }
anhnt2407 0:df9baf6459b7 111 void TSL2561::write8 (uint8_t reg, uint8_t value)
andcor02 4:8146a28a20cc 112 {
anhnt2407 0:df9baf6459b7 113 i2c.start();
anhnt2407 1:ab906ac6e90b 114 i2c.write(_addr<<1);
anhnt2407 0:df9baf6459b7 115 i2c.write(reg);
anhnt2407 0:df9baf6459b7 116 i2c.write(value);
andcor02 4:8146a28a20cc 117 i2c.stop();
anhnt2407 0:df9baf6459b7 118 }
anhnt2407 0:df9baf6459b7 119 void TSL2561::setTiming(tsl2561IntegrationTime_t integration){
anhnt2407 0:df9baf6459b7 120 if (!_initialized) begin();
anhnt2407 0:df9baf6459b7 121 enable();
anhnt2407 0:df9baf6459b7 122 _integration = integration;
andcor02 4:8146a28a20cc 123 write8(TSL2561_COMMAND_BIT | TSL2561_REGISTER_TIMING, _integration | _gain);
anhnt2407 0:df9baf6459b7 124 disable();
anhnt2407 1:ab906ac6e90b 125 //wait(1);
anhnt2407 0:df9baf6459b7 126 }
anhnt2407 0:df9baf6459b7 127 void TSL2561::setGain(tsl2561Gain_t gain) {
anhnt2407 0:df9baf6459b7 128 if (!_initialized) begin();
anhnt2407 0:df9baf6459b7 129 enable();
anhnt2407 0:df9baf6459b7 130 _gain = gain;
andcor02 4:8146a28a20cc 131 write8(TSL2561_COMMAND_BIT | TSL2561_REGISTER_TIMING, _integration | _gain);
andcor02 4:8146a28a20cc 132 //write8(TSL2561_COMMAND_BIT | TSL2561_REGISTER_TIMING, _gain);
anhnt2407 0:df9baf6459b7 133 disable();
anhnt2407 1:ab906ac6e90b 134 //wait(1);
anhnt2407 0:df9baf6459b7 135 }
anhnt2407 0:df9baf6459b7 136 void TSL2561::enable(void)
anhnt2407 0:df9baf6459b7 137 {
anhnt2407 0:df9baf6459b7 138 if (!_initialized) begin();
anhnt2407 0:df9baf6459b7 139 // Enable the device by setting the control bit to 0x03
anhnt2407 0:df9baf6459b7 140 write8(TSL2561_COMMAND_BIT | TSL2561_REGISTER_CONTROL, TSL2561_CONTROL_POWERON);
anhnt2407 0:df9baf6459b7 141 }
anhnt2407 0:df9baf6459b7 142 void TSL2561::disable(void)
anhnt2407 0:df9baf6459b7 143 {
anhnt2407 0:df9baf6459b7 144 if (!_initialized) begin();
anhnt2407 0:df9baf6459b7 145 // Disable the device by setting the control bit to 0x03
anhnt2407 0:df9baf6459b7 146 write8(TSL2561_COMMAND_BIT | TSL2561_REGISTER_CONTROL, TSL2561_CONTROL_POWEROFF);
anhnt2407 0:df9baf6459b7 147 }