Diff: edge_sensor/edge_color.h

Revision:

0:846e2321c637

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/edge_sensor/edge_color.h	Fri Apr 13 04:19:23 2018 +0000
@@ -0,0 +1,215 @@
+#ifndef _EDGE_COLOR_H_
+#define _EDGE_COLOR_H_
+#include "mbed.h"
+#include "edge_sensor.h"
+#include "VEML6040.h"
+
+/**
+ * edge_color edge_sensor which manages LED and color sensor (VEML6040)
+ */
+
+class edge_color : public edge_sensor {
+public:
+/**
+ * constructor 
+ * @param *sensor VEML6040 object
+ * @param *led[] PwmOuts for LEDs
+ * @param *pwm[] uint16_t pwm duty values
+ */
+    edge_color(VEML6040 *sensor, PwmOut *led[], uint16_t *pwm) ;
+    
+/**
+ * destructor
+ */
+    ~edge_color(void) ;
+
+/**
+ * reset and clear internal values
+ */
+    virtual void        reset(void) ;
+
+/**
+ * prepare at first this was planned to set LEDs 
+ * before sampling, but turned out to be not neccesarry
+ */
+    virtual void        prepare(void) ;
+
+/**
+ * sample sampling the color value(s) is some what complicated.
+ * At first leds are turned on using the pwm values _pwm[].
+ * then VEML6040 is triggered with config value, which includes
+ * the trigger method and integration time.
+ * Wait for the integration time (actually x 1.25 of the value)
+ * then acquire the color values from VEML6040 and turn the leds off.
+ */
+    virtual int        sample(void) ;
+    
+/**
+ * Deliver the sampled value to the afero cloud.
+ */
+    virtual int         deliver(void) ;
+    
+/**
+ * Show the value(s) in the display (TFT)
+ */
+    virtual void        show(void) ;
+
+/**
+ * calibrate: caribrate the led pwm values trying to adjust the measured
+ * values to the values given in target[]. Measurements are repeated
+ * num_ave+2 times and the minimum and maximum values will be discarded
+ * then average values are calculated using the remaining values.
+ * @param target[] uint16_t target values for R, G, B measurement
+ * @param result[] uint16_t calibrated pwm R,G,B values
+ * @param num_ave repeat time for averaging the measurement data
+ */
+    void        calibrate(uint16_t target[], uint16_t result[], int num_ave) ;
+    
+/**
+ * request_calibration: set the flag to calibrate next avilable time slot
+ */
+    void        request_calibration(void) { _calibration_request = 1 ; }
+    
+/**
+ * calibration_requested
+ * @returns if the calibration is due
+ */
+    int         calibration_requested(void) { return _calibration_request ; }
+    
+/**
+ * getAveColor
+ * @param led[] uint16_t pwm values for R,G,B
+ * @param v[]   uint16_t averaged measurement value
+ * @param num_ave int    measurment repeat time for averaging
+ */
+    void        getAveColor(uint16_t led[], uint16_t v[], int num_ave) ;
+    
+/**
+ * getRGB
+ * @param v[] uint16_t measured R,G,B values
+ * @returns 0: success non-0: failure
+ */
+    int        getRGB(uint16_t v[]) ;
+    
+/**
+ * getConfig
+ * @returns config this value is used to trigger VEML6040 measurement
+ */
+    uint8_t     getConfig(void) { return _sensor_config ; }
+
+/**
+ * setConfig
+ * @param config uint8_t 8bit value to use trigger VEML6040 measurement
+ */
+    void        setConfig(uint8_t config) { _sensor_config = config ; }
+    
+/**
+ * get_pwm_period
+ * @returns pwm_period in us
+ */
+    uint16_t    get_pwm_period(void) { return _pwm_period ; }   
+
+/**
+ * set_pwm_period
+ * @param pwm_period uint16_t pwm period in us
+ */
+    void        set_pwm_period(uint16_t period) { _pwm_period = period ; }
+    
+/**
+ * get_pwm_target
+ * @returns measurment target value controlled by the pwm
+ */
+    uint16_t    get_pwm_target(void) { return _pwm_target ; }
+    
+/**
+ * set_pwm_target
+ * @param target uint16_t measurement target value
+ */
+    void        set_pwm_target(uint16_t target) { _pwm_target = target ; }
+    
+/**
+ * getR
+ * @returns measured value of R
+ */
+    uint16_t    getR(void) { return _value[0] ; }
+
+/**
+ * getG
+ * @returns measured value of G
+ */
+    uint16_t    getG(void) { return _value[1] ; }
+    
+/**
+ * getB
+ * @returns measured value of B
+ */
+    uint16_t    getB(void) { return _value[2] ; }
+    
+/**
+ * getPwmR
+ * @returns PWM value of R LED
+ */
+    uint16_t    getPwmR(void) { return _pwm[0] ; }
+
+/**
+ * setPwmR
+ * @param pwm_r 
+ */
+   void setPwmR(uint16_t pwm_r) { _pwm[0] = pwm_r ; } 
+
+/**
+ * getPwmG
+ * @returns PWM value of G LED
+ */
+    uint16_t    getPwmG(void) { return _pwm[1] ; }
+
+/**
+ * setPwmG
+ * @param pwm_g 
+ */
+   void setPwmG(uint16_t pwm_g) { _pwm[1] = pwm_g ; } 
+    
+/**
+ * getPwmB
+ * @returns PWM value of B LED
+ */
+    uint16_t    getPwmB(void) { return _pwm[2] ; }
+
+/**
+ * setPwmB
+ * @param pwm_b 
+ */
+   void setPwmB(uint16_t pwm_b) { _pwm[2] = pwm_b ; } 
+    
+/**
+ * setLEDs set pwm values to PwmOut pins to drive LEDS
+ * @param led_value[] uint16_t pwm values for R, G, B
+ */
+    void        setLEDs(uint16_t led_value[]) ;
+    
+/**
+ * setLEDs set pwm values to PwmOut pins to drive LEDS
+ * @param r uint16_t pwm value of R LED
+ * @param g uint16_t pwm value of G LED
+ * @param b uint16_t pwm value of B LED
+ */
+    void        setLEDs(uint16_t r, uint16_t g, uint16_t b) ;
+    
+protected:
+    VEML6040    *_sensor ;
+    uint8_t     _sensor_config ;
+    PwmOut      *_led[3] ;
+    uint16_t    _pwm_period ;
+    uint16_t    _pwm_target ;
+    uint16_t    _value[3] ; /* r, g, b */
+    uint16_t    _pwm[3] ;   /* r, g, b */
+    uint16_t    _probe ; /* probing value for calibration */
+    uint8_t     _calibration_request ;
+} ;
+
+extern uint16_t        color0_pwm[3] ;
+extern uint16_t        color1_pwm[3] ;
+extern uint16_t        color0_target[3] ;
+extern uint16_t        color1_target[3] ;
+
+#endif /* _EDGE_COLOR_H_ */
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