Diff: veml60xx.cpp

Revision:

3:96075bee19f0

Parent:

1:d8d62aee6d5b

--- a/veml60xx.cpp	Thu Apr 21 23:32:50 2016 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,229 +0,0 @@
-// Vishay veml6040 RGBW and veml6075 UVA + UVB optical sensors
-
-#include "veml60xx.h"
-
-//--------------------------------------------------------------------------------------------------------------------------------------//
-// Constructor, to allow for user to select i2c frequency
-
-veml60xx::veml60xx(PinName sda, PinName scl,  int i2cFrequency) {
-    _i2c_ = new I2C(sda, scl);
-    _i2c_->frequency(i2cFrequency);
-}
-
-//--------------------------------------------------------------------------------------------------------------------------------------//
-// deconstructor
-
-veml60xx::~veml60xx() {
-}
-
-//--------------------------------------------------------------------------------------------------------------------------------------//
-// Set/initialize the veml60xx config register.
-
-void veml60xx::setConfig(veml60xx_struct& Pntr, uint16_t val) {
-    vemlBuffer[0] = VEML60xx_CONF_REG;
-    vemlBuffer[1] = val;
-    //vemlBuffer[1] = VEML60xx_CONF_BITS_IT_400m320m | val;
-    //vemlBuffer[1] = VEML60xx_CONF_BITS_IT_400m320m | VEML6075_CONF_BITS_HD;
-    //vemlBuffer[1] = VEML60xx_CONF_BITS_IT_400m320m | VEML6075_CONF_BITS_HD | VEML60xx_CONF_BITS_AF;
-    vemlBuffer[2] = 0;
-    _i2c_->write(VEML60_WADDR, vemlBuffer, 3, false);
-    Pntr.conf_reg = (vemlBuffer[2] << 8)  | vemlBuffer[1];
-}
-
-//--------------------------------------------------------------------------------------------------------------------------------------//
-// Get veml60xx ID register.  Returns register value
-// Note: the veml6040 does hvae a device ID, but is not in datasheet
-
-uint16_t veml60xx::getID(veml60xx_struct& Pntr) {
-    vemlBuffer[0] = VEML6075_CHIP_ID_REG;
-    _i2c_->write(VEML60_WADDR, vemlBuffer, 1, true);
-    _i2c_->read(VEML60_RADDR, vemlBuffer, 2, false);
-    uint16_t rdata = (vemlBuffer[1] << 8)  | vemlBuffer[0];
-    if((rdata & VEML6075_DEVICE_ID) == VEML6075_DEVICE_ID) {
-        Pntr.is6075 = true;
-        Pntr.is6040 = false;
-    } else
-    if((rdata & VEML6040_DEVICE_ID) == VEML6040_DEVICE_ID) {
-        Pntr.is6075 = false;
-        Pntr.is6040 = true;
-    } else {
-        Pntr.is6075 = false;
-        Pntr.is6040 = false;
-    }
-    return(rdata);
-}
-
-//--------------------------------------------------------------------------------------------------------------------------------------//
-// Get veml60xx config register.  Returns register value
-
-uint16_t veml60xx::getConfig(veml60xx_struct& Pntr) {
-    vemlBuffer[0] = VEML60xx_CONF_REG;
-    _i2c_->write(VEML60_WADDR, vemlBuffer, 1, true);
-    _i2c_->read(VEML60_RADDR, vemlBuffer, 2, false);
-    uint16_t rdata = (vemlBuffer[1] << 8)  | vemlBuffer[0];
-    if(Pntr.is6040) {
-        uint16_t c = rdata & VEML60xx_CONF_BITS_IT;
-        switch (c) {
-            case VEML60xx_CONF_BITS_IT_50m40m: 
-                Pntr.lux_step = VEML6040_LUX_STEP_000;
-                break;
-            case VEML60xx_CONF_BITS_IT_100m80m:
-                Pntr.lux_step = VEML6040_LUX_STEP_001;
-                break;
-            case VEML60xx_CONF_BITS_IT_200m160m:
-                Pntr.lux_step = VEML6040_LUX_STEP_010;
-                break;
-            case VEML60xx_CONF_BITS_IT_400m320m:
-                Pntr.lux_step = VEML6040_LUX_STEP_011;
-                break;
-            case VEML60xx_CONF_BITS_IT_800m640m:
-                Pntr.lux_step = VEML6040_LUX_STEP_100;
-                break;
-            case VEML6040_CONF_BITS_IT_1280m:
-                Pntr.lux_step = VEML6040_LUX_STEP_101;
-                break;
-            default:
-                Pntr.lux_step = 0.0;
-                break;
-        }
-    }
-    return(rdata);
-}    
-
-//--------------------------------------------------------------------------------------------------------------------------------------//
-// If AF set to trigger mode, start a conversion process trigger
-// Returns: 0=trigger set, 1=already triggered,  2=no AF bit - cannot set trigger
-
-uint16_t veml60xx::startAccess(veml60xx_struct& Pntr) {
-    uint16_t val = getConfig(Pntr);
-    if((val & VEML60xx_CONF_BITS_AF) == VEML60xx_CONF_BITS_AF) {
-        if((val & VEML60xx_CONF_BITS_TRIG) == VEML60xx_CONF_BITS_TRIG) return(1);
-        val |= VEML60xx_CONF_BITS_TRIG;
-        setConfig(Pntr, val);
-        return(0);
-    }
-    return(2);
-}       
-    
-//--------------------------------------------------------------------------------------------------------------------------------------//
-// Get VEML60xx values.  Saves raw data is data structure.  Returns 0 if successful, !0 if status is (something else);
-// mode: false = VEML6075, true = VEML6040
-
-uint16_t veml60xx::getRawData(veml60xx_struct& Pntr) {
-    Pntr.conf_reg = getConfig(Pntr);
-    Pntr.id = getID(Pntr);
-        
-    if(Pntr.is6075) {
-        vemlBuffer[0] = VEML6075_UVA_DATA_REG;
-        _i2c_->write(VEML60_WADDR, vemlBuffer, 1, true);
-        _i2c_->read(VEML60_RADDR, vemlBuffer, 2, false);
-        Pntr.uva_d = ((vemlBuffer[1] << 8)  | vemlBuffer[0]);
-    }
-    
-    vemlBuffer[0] = VEML6075_DUMMY_REG;
-    _i2c_->write(VEML60_WADDR, vemlBuffer, 1, true);
-    _i2c_->read(VEML60_RADDR, vemlBuffer, 2, false);
-    if(Pntr.is6075) {
-        Pntr.dummy_d = ((vemlBuffer[1] << 8)  | vemlBuffer[0]);
-    } else 
-    if(Pntr.is6040) {
-        Pntr.r_d = ((vemlBuffer[1] << 8)  | vemlBuffer[0]);
-    }
-    
-    vemlBuffer[0] = VEML6075_UVB_DATA_REG;
-    _i2c_->write(VEML60_WADDR, vemlBuffer, 1, true);
-    _i2c_->read(VEML60_RADDR, vemlBuffer, 2, false);
-    if(Pntr.is6075) {
-        Pntr.uvb_d = ((vemlBuffer[1] << 8)  | vemlBuffer[0]);
-    } else 
-    if(Pntr.is6040) {
-        Pntr.g_d = ((vemlBuffer[1] << 8)  | vemlBuffer[0]);
-    }
-       
-    vemlBuffer[0] = VEML6075_UV_COMP1_REG;
-    _i2c_->write(VEML60_WADDR, vemlBuffer, 1, true);
-    _i2c_->read(VEML60_RADDR, vemlBuffer, 2, false);
-    if(Pntr.is6075) {
-        Pntr.uv_c1 = ((vemlBuffer[1] << 8)  | vemlBuffer[0]);
-    } else 
-    if(Pntr.is6040) {
-        Pntr.b_d = ((vemlBuffer[1] << 8)  | vemlBuffer[0]);
-    }
-        
-    vemlBuffer[0] = VEML6075_UV_COMP2_REG;
-    _i2c_->write(VEML60_WADDR, vemlBuffer, 1, true);
-    _i2c_->read(VEML60_RADDR, vemlBuffer, 2, false);
-    if(Pntr.is6075) {
-        Pntr.uv_c1 = ((vemlBuffer[1] << 8)  | vemlBuffer[0]);
-    } else
-    if(Pntr.is6040) {
-        Pntr.w_d = ((vemlBuffer[1] << 8)  | vemlBuffer[0]);
-    }
-    
-    return(0);
-}
-
-//--------------------------------------------------------------------------------------------------------------------------------------//
-// Convert raw data into real UVA, UVB and UVI numbers
-
-void veml60xx::convertRawData(veml60xx_struct& Pntr) {
-    getRawData(Pntr);
-    
-    //Eq (1)
-    Pntr.uva_comp = (double)(Pntr.uva_d - Pntr.dummy_d) - 
-                    VEML6075_UVA_COEF_A * (double)(Pntr.uv_c1 - Pntr.dummy_d) - 
-                    VEML6075_UVA_COEF_B * (double)(Pntr.uv_c2 - Pntr.dummy_d);
-    
-    //Eq (2)
-    Pntr.uvb_comp = (double)(Pntr.uvb_d - Pntr.dummy_d) - 
-                    VEML6075_UVB_COEF_C * (double)(Pntr.uv_c1 - Pntr.dummy_d) - 
-                    VEML6075_UVB_COEF_D * (double)(Pntr.uv_c2 - Pntr.dummy_d);
-    //Eq (3)
-    Pntr.uv_index = ((Pntr.uva_comp * VEML6075_UVA_RESP) + (Pntr.uvb_comp * VEML6075_UVB_RESP))/2.0;
-}
-    
-
-//--------------------------------------------------------------------------------------------------------------------------------------//
-// If there is a lux over/underflow, automatically adjust the CONF_BITS_IT by +-1 to compensate accordingly
-// if returns true, the Lux level was changed.
-
-bool veml60xx::autoAdjustLux(veml60xx_struct& Pntr) {
-    getRawData(Pntr);
-    uint16_t rdata = Pntr.conf_reg;
-    uint16_t lux = rdata & VEML60xx_CONF_BITS_IT;
-    if(Pntr.is6040) {
-        if((Pntr.r_d < 255) && (Pntr.g_d < 255) && (Pntr.b_d < 255) && (Pntr.w_d < 255)) {
-            if(lux == VEML6040_CONF_BITS_IT_1280m) return false;
-            lux += VEML60xx_CONF_BITS_IT_100m80m;
-            rdata = (rdata & ~VEML60xx_CONF_BITS_IT) | lux;
-            setConfig(Pntr, rdata);
-            return true;
-        } else 
-        if((Pntr.r_d == 65535) || (Pntr.g_d == 65535) || (Pntr.b_d == 65535) || (Pntr.w_d == 65535)) {
-            if(lux == VEML60xx_CONF_BITS_IT_50m40m) return false;
-            lux -= VEML60xx_CONF_BITS_IT_100m80m;
-            rdata = (rdata & ~VEML60xx_CONF_BITS_IT) | lux;
-            setConfig(Pntr, rdata);
-            return true;
-        }
-    } else
-    if(Pntr.is6075) {
-        if((Pntr.uva_d < 255) && (Pntr.uvb_d < 255)) {
-            if(lux == VEML60xx_CONF_BITS_IT_800m640m) return false;
-            lux += VEML60xx_CONF_BITS_IT_100m80m;
-            rdata = (rdata & ~VEML60xx_CONF_BITS_IT) | lux;
-            setConfig(Pntr, rdata);
-            return true;
-        } else 
-        if((Pntr.uva_d == 65535) || (Pntr.uvb_d == 65535)) {
-            if(lux == VEML60xx_CONF_BITS_IT_50m40m) return false;
-            lux -= VEML60xx_CONF_BITS_IT_100m80m;
-            rdata = (rdata & ~VEML60xx_CONF_BITS_IT) | lux;
-            setConfig(Pntr, rdata);
-            return true;
-        }
-    }
-    return false;
-}
-            
-    
\ No newline at end of file