digital light sensor using ardunio i2c pins
Dependents: LoRaWAN_singlechannel_endnode
Fork of TSL2561 by
TSL2561.cpp
- Committer:
- dudmuck
- Date:
- 2017-07-05
- Revision:
- 2:1740d88b1edc
- Parent:
- 1:ab906ac6e90b
- Child:
- 3:0f0aa5c510e6
File content as of revision 2:1740d88b1edc:
#include "TSL2561.h" #include "mbed.h" /*Serial DEBUG(USBTX, USBRX); #define DEBUG_PRINTX(z,x) if(z==1) DEBUG.printf(x); #define DEBUG_PRINTLNX(z,x) if(z==1) {DEBUG.printf(x); DEBUG.printf("\r\n");} #define DEBUG_PRINTXY(z,x, y) if(z==1) DEBUG.printf(x, y); #define DEBUG_PRINTLNXY(z,x, y) if(z==1) {DEBUG.printf(x, y); DEBUG.printf("\r\n");} */ TSL2561::TSL2561():i2c(I2C_SDA, I2C_SCL){ i2c.frequency (300); _addr = TSL2561_ADDR_FLOAT; _initialized = false; _integration = TSL2561_INTEGRATIONTIME_13MS; _gain = TSL2561_GAIN_16X; } TSL2561::TSL2561(uint8_t addr):i2c(I2C_SDA, I2C_SCL) { _addr = addr; _initialized = false; _integration = TSL2561_INTEGRATIONTIME_13MS; _gain = TSL2561_GAIN_16X; // we cant do wire initialization till later, because we havent loaded Wire yet } TSL2561::TSL2561(PinName sda, PinName scl):i2c(sda, scl) { _addr = TSL2561_ADDR_FLOAT; _initialized = false; _integration = TSL2561_INTEGRATIONTIME_13MS; _gain = TSL2561_GAIN_16X; // we cant do wire initialization till later, because we havent loaded Wire yet } TSL2561::TSL2561(PinName sda, PinName scl, uint8_t addr):i2c(sda, scl) { _addr = addr; _initialized = false; _integration = TSL2561_INTEGRATIONTIME_13MS; _gain = TSL2561_GAIN_16X; // we cant do wire initialization till later, because we havent loaded Wire yet } uint16_t TSL2561::getLuminosity (uint8_t channel) { uint32_t x = getFullLuminosity(); if (channel == 0) { // Reads two byte value from channel 0 (visible + infrared) return (x & 0xFFFF); } else if (channel == 1) { // Reads two byte value from channel 1 (infrared) return (x >> 16); } else if (channel == 2) { // Reads all and subtracts out just the visible! return ( (x & 0xFFFF) - (x >> 16) ); } // unknown channel! return 0; } uint32_t TSL2561::getFullLuminosity (void) { if (!_initialized) begin(); // Enable the device by setting the control bit to 0x03 enable(); // Wait x ms for ADC to complete switch (_integration) { case TSL2561_INTEGRATIONTIME_13MS: wait_ms(14); break; case TSL2561_INTEGRATIONTIME_101MS: wait_ms(102); break; default: wait_ms(403); break; } //DEBUG_PRINTLNXY(0," Integration:= %d",_integration); uint32_t x; x = read16(TSL2561_COMMAND_BIT | TSL2561_WORD_BIT | TSL2561_REGISTER_CHAN1_LOW); // DEBUG_PRINTLNXY(0," x:= %d",x); x <<= 16; x |= read16(TSL2561_COMMAND_BIT | TSL2561_WORD_BIT | TSL2561_REGISTER_CHAN0_LOW); //DEBUG_PRINTLNXY(0," x:= %d",x); //wait(3); disable(); return x; } bool TSL2561::begin(void) { char reg[1]; reg[0] = TSL2561_REGISTER_ID; char receivedata[1]; char read; i2c.write(_addr<<1, reg, 1); i2c.read(_addr<<1, receivedata, 1); read=receivedata[0]; if (read & 0x0A ) { printf("Read 0x%x => Found TSL2561\r\n",read); } else { printf("read:%x\r\n", read); return false; } _initialized = true; // Set default integration time and gain setTiming(_integration); setGain(_gain); // Note: by default, the device is in power down mode on bootup disable(); return true; } uint16_t TSL2561::read16(uint8_t reg) { uint16_t x; uint16_t t; char _x; char _t; char r[1]; r[0] = reg; char receivedata[2]; i2c.write(_addr<<1, r, 1); i2c.read(_addr<<1, receivedata, 2); _t=receivedata[0]; _x=receivedata[1]; /*printf("_t:=0x%x",_t); printf("_x:=0x%x",_x); */ t=(uint16_t)_t; x=(uint16_t)_x; x <<= 8; x |= t; //printf("x:= %d\r\n",x); return x; } void TSL2561::write8 (uint8_t reg, uint8_t value) { i2c.start(); i2c.write(_addr<<1); i2c.write(reg); i2c.write(value); i2c.stop(); } void TSL2561::setTiming(tsl2561IntegrationTime_t integration){ if (!_initialized) begin(); /*else printf("--------------Set Timing---------\r\n");*/ enable(); _integration = integration; /*printf("Integration: 0x%x ",_integration); printf("Gain: 0x%x ",_gain); printf("Integration | Gain: 0x%x\r\n",_integration | _gain);*/ write8(TSL2561_COMMAND_BIT | TSL2561_REGISTER_TIMING, _integration | _gain); disable(); //printf("--------------Complete Set Timing-------------\r\n"); //wait(1); } void TSL2561::setGain(tsl2561Gain_t gain) { if (!_initialized) begin(); /*else printf("-------------Set Gain--------------\r\n");*/ enable(); /*printf("Intergration: 0x%x ",_integration); printf("Gain: 0x%x ",_gain); printf("Intergration | Gain: 0x%x\r\n",_integration | _gain);*/ _gain = gain; write8(TSL2561_COMMAND_BIT | TSL2561_REGISTER_TIMING, _integration | _gain); //write8(TSL2561_COMMAND_BIT | TSL2561_REGISTER_TIMING, _gain); disable(); //printf("---------------Complete Set Gain----------------\r\n"); //wait(1); } void TSL2561::enable(void) { if (!_initialized) begin(); // Enable the device by setting the control bit to 0x03 //printf("Power On\r\n"); write8(TSL2561_COMMAND_BIT | TSL2561_REGISTER_CONTROL, TSL2561_CONTROL_POWERON); } void TSL2561::disable(void) { if (!_initialized) begin(); // Disable the device by setting the control bit to 0x03 //printf(" Power Off\r\n"); write8(TSL2561_COMMAND_BIT | TSL2561_REGISTER_CONTROL, TSL2561_CONTROL_POWEROFF); }