//STM32F103C, 64k flash //upload method: serial (A9 to RX, A10 to TX) //To upload set Boot0 jumper to 1 (the one further away from reset btn) and press reset (stm will boot from flash wich contains uart to flash uploader) //upload via arduino IDE //To boot program after restart set Boot0 jumper to 0 //Letters 5x7 at Size 1 #include //#include #include #include #include // http://www.instructables.com/id/Monochrome-096-i2c-OLED-display-with-arduino-SSD13/ //128 x 64 px #define WIDTH 128 #define HEIGHT 64 #include #include //from: https://github.com/mysensors/MySensorsArduinoExamples/tree/master/libraries/BH1750 BH1750 lightMeter; #define INCIDENT_CORRECTION_FACTOR 1.17 //with 1125 25 225 2465 120 //wihtout 1335 32 265 2865 145 /*1,186666667 1,28 1,177777778 1,162271805 1,208333333*/ #define PIN_LDR 0 //A0 #define PIN_BRIGHTMODE 1 //A1 #define PIN_VBAT 2 //A2 #define PIN_LED 8 //White status led A8 #define PIN_TRIGGER PB8 #define PIN_BTNLEFT PA15 #define PIN_BTNCENTER PB4 #define PIN_BTNRIGHT PB5 #define PIN_ON PB9 //pin for hardware latch #define TIME_AUTOPOWEROFF 120000 #define TIME_METERINGMODESELECTION_CLOSE 60000 #define TIME_METERINGMODESELECTION_SHUTDOWN_SHORTCUT 500 #define LDRDELAY 100 //delay between ldr switches. New analog_high or low reading after that time. Transistor for lower value pulldown resistor switches in between #define LDRFILTERDELAY 1 //delay in ms between readings sequent readings for smoothing . LDRFILTERDELAY*64 > LDRDELAY #define LDRSWITCHDELAY 30 //time to wait after transistor switched #define INCIDENTDELAY 100 //minimum delay between incident sensor (BH1750) readings #define DEBOUNCETIME 20 //time to not check for inputs after key press #define BUTTONTIMEHOLD 750 //time for button hold #define BUTTONTIMEHOLDLONG 3000 //time for button long hold #define VOLTAGE_WARN 3.4 //voltage per cell //TODO implement warning //float shuttertimes1[]={1,1.0/2, 1.0/4, 1.0/8, 1.0/15, 1.0/30, 1.0/60, 1.0/125, 1.0/250, 1.0/500, 1.0/1000, 1.0/2000, 1.0/4000, 1.0/8000}; float shuttertimes1[]={64,32,16,8,4,2,1,1.0/2, 1.0/4, 1.0/8, 1.0/15, 1.0/30, 1.0/60, 1.0/125, 1.0/250, 1.0/500, 1.0/1000, 1.0/2000, 1.0/4000, 1.0/8000}; #define SHUTTERTIMES1_MAXINDEX 19 float shuttertimes2[]={30,25,20,15,13,10,8,6,5,4,3.2,2.5,2,1.6,1.3,1,0.8,0.6,0.5,0.4,0.3,1.0/4,1.0/5,1.0/6,1.0/8,1.0/10,1.0/13,1.0/15,1.0/20,1.0/25,1.0/30,1.0/40,1.0/50,1.0/60,1.0/80,1.0/100,1.0/125,1.0/160,1.0/200,1.0/250,1.0/320,1.0/400,1.0/500,1.0/640,1.0/800,1.0/1000,1.0/1250,1.0/1600,1.0/2000,1.0/2500,1.0/3200,1.0/4000}; #define SHUTTERTIMES2_MAXINDEX 51 String settingsnameShutterSelectionMode[]={"Analog","Digital"}; //names for tables #define MAXIMUM_SHUTTERSELECTIONMODES 2 float aperaturesFull[]={1,1.4, 2, 2.8, 4, 5.6, 8, 11, 16, 22, 32}; #define APERATURESFULL_MAXINDEX 10 float aperaturesHalf[]={1, 1.2, 1.4, 1.7, 2, 2.4, 2.8, 3.4, 4, 4.8, 5.6, 6.7, 8, 9.5, 11, 13, 16, 19, 22}; #define APERATURESHALF_MAXINDEX 18 float aperaturesThird[]={1, 1.1, 1.2, 1.4, 1.6, 1.8, 2, 2.2, 2.5, 2.8, 3.2, 3.5, 4, 4.5, 5.0, 5.6, 6.3, 7.1, 8, 9, 10, 11, 13, 14, 16, 18, 20, 22, 25, 29, 32, 36, 40, 45}; #define APERATURESTHIRD_MAXINDEX 33 String settingsnameAperatureSelectionMode[]={"Full","Half","Third"}; //names for tables #define MAXIMUM_APERATURESELECTIONMODES 3 float isoFull[]={12,25,50,100,200,400,800,1600,3200,6400,12500,25600}; float isoThird[]={12,16,20,25,32,40,50,64,80,100,125,160,200,250,320,400,500,640,800,1000,1250,1600,2000,2500,3200,4000,5000,6400,8000,10000,12500,16000,20000,25600}; long loopmillis=0; //only use one millis reading each loop long last_ldrReading=0; long last_ldrReadingFilter=0; long last_incidentReading=0; long millis_lastchange=0; long millis_lastinput=0; long millis_ledoff=0; //for led blink long millis_opened_meteringmodeselection=0; //time when meteringmodeselecten was opened (for led flashlight timing) #define DELAY_METERINGMODESELECTION_FLASHLIGHT 2000 long timebuttonpressed_trigger; long timebuttonpressed_left; long timebuttonpressed_center; long timebuttonpressed_right; //Short press (true when button short pressed, on release) boolean button_trigger=false; boolean button_left=false; boolean button_center=false; boolean button_right=false; //long press (true when button is held down for BUTTONTIMEHOLD, on time elapsed) boolean button_hold_trigger=false; boolean button_hold_left=false; boolean button_hold_center=false; boolean button_hold_right=false; //even longer press boolean button_hold_long_trigger=false; long timebuttonpressed_trigger_long=0; float vbat=100; struct Settings { uint8_t minimumAperatureIndex; //see corresponding aperatures table uint8_t aperatureSelectionMode; //1=Full, 2=Half, 3=Third uint8_t shutterSelectionMode; //index for which shuttertimes table to use uint8_t ISOSelectionMode; //1=Full, 2=Thirds uint8_t manualev_moveamount_frac; // 1=1ev, 2=1/2ev, 3=1/3 ev }; #define MAXIMUM_MANUAL_EV_MOVEAMOUNT_FRAC 3 bool settingsStructEqual(Settings a, Settings b){ if (a.minimumAperatureIndex!=b.minimumAperatureIndex || a.aperatureSelectionMode!=b.aperatureSelectionMode || a.shutterSelectionMode!=b.shutterSelectionMode || a.ISOSelectionMode!=b.ISOSelectionMode){ return false; } return true; } Settings userSettings= {1,1, 1,2,1}; Settings eeprom_userSettings; //to store current eeprom status #define OLED_RESET 4 Adafruit_SSD1306 display(OLED_RESET); uint16_t incident=0; //incident reading from bh1750 uint16_t analog_low=0; //better for low light uint16_t analog_high=0; //better for bright light (higher pulldown resistor for ldr) uint16_t analog_reading_filtering=0; uint8_t analog_reading_count=0; float ev=0; //calculated EV from LDR readings (reflected) or from Luxmeter (incident) float ev_min=-255,ev_max=-255,ev_last=-255; float showAperature=0; float showShutter=0; bool manualev_mode=false; //manual ev change by left/right //Usersettings float setAperature=8; //set to use aperature. 0 for auto float setShutter=0; //set to use shutter time, 0 for auto uint16_t setISO=100; //set to ISO float eeprom_setAperature=0; //set to use aperature. 0 for auto float eeprom_setShutter=0; //set to use shutter time, 0 for auto uint16_t eeprom_setISO=0; //set to ISO #define EEPROMADDRESS_APERATURE 0x801F000 //float = 32bit = 4byte #define EEPROMADDRESS_SHUTTER 0x801F004 //float = 32bit = 4byte #define EEPROMADDRESS_ISO 0x801F008 //uint16_T 16bit = 2byte #define EEPROMADDRESS_METERINGMODE 0x801F00A //uint8_t 1byte #define EEPROMADDRESS_USERSETTINGS 0x801F00B //Settings struct enum displaymode { lightmeter, settings, meteringmodeselection }; displaymode displaymode=lightmeter; uint8_t settings_selectedItem=0; //in settings display String settingStrings[]={"ISO:","F-Stops:","Timetable:","EV Step:","Turn Off"}; #define SETTINGS_SELECTEDITEM_MAX 4 //inclusive. 2 means 3 items available boolean settings_itemActive=false; //item in settings selected to change value #define DISPLAY_UPDATEDELAY 200 long last_displayupdate=0; #define METERINGMODE_REFLECTIVE 0 #define METERINGMODE_INCIDENT 1 uint8_t meteringmode=METERINGMODE_REFLECTIVE; uint8_t eeprom_meteringmode=0; bool eeprom_red=false; //false, if eeprom need to be red bool debug_printreadings=false; uint16_t debug_analog_high=0; uint16_t debug_analog_low=0; char tempstring[16]; //for dtostrf //dtostrf(modefactor,1,3,tempstring); #if (SSD1306_LCDHEIGHT != 64) #error("Height incorrect, please fix Adafruit_SSD1306.h!"); #endif //Icons. Exported as .xbm from gimp and renamed to .c #include "icon_incident.c" #include "icon_spot.c" #include "icon_arrow.c" #include "icon_one_third.c" #include "icon_one_half.c" #include "icon_two_third.c" void setup() { Serial.begin(115200); Serial.println("Started"); Serial.println("Init Display"); display.begin(SSD1306_SWITCHCAPVCC, 0x3C); display.clearDisplay(); display.display(); Serial.println("Init BH1750"); lightMeter.begin(BH1750_CONTINUOUS_HIGH_RES_MODE_2); //max reading=54612 //set measurement time (for higher resolution) http://www.raspberry-pi-geek.de/Magazin/2015/04/Digital-Light-Sensor-BH1750-am-Raspberry-Pi //lightMeter.write8(71); //01000111 //high bit: 01000xxx bits 7,6,5 //lightMeter.write8(126); //01111110 //log bit: 011xxxxx bits 4,3,2,1,0 pinMode(PIN_LDR, INPUT_ANALOG); pinMode(PIN_VBAT, INPUT_ANALOG); pinMode(PIN_TRIGGER, INPUT_PULLUP); pinMode(PIN_BTNLEFT, INPUT_PULLUP); pinMode(PIN_BTNCENTER, INPUT_PULLUP); pinMode(PIN_BTNRIGHT, INPUT_PULLUP); pinMode(PIN_BRIGHTMODE, OUTPUT); digitalWrite(PIN_BRIGHTMODE, LOW); pinMode(PIN_ON, OUTPUT); digitalWrite(PIN_ON, HIGH); pinMode(PIN_LED, OUTPUT); analogWrite(PIN_LED,255); //blink led on delay(50); analogWrite(PIN_LED,0); //LED OFF //blink led off millis_lastchange=millis(); Serial.println("Initialized"); if (!digitalRead(PIN_TRIGGER)){ //hold trigger button during power on activates serial debug printing debug_printreadings=true; } } bool saveSettingsToEEPROM(bool force){ bool _eepromwritten=false; //checks and writes changes to eeprom if (eeprom_setAperature!=setAperature || force){ //value change or write forced EEPROM_writeAnything(EEPROMADDRESS_APERATURE, setAperature); _eepromwritten=true; } if (eeprom_setShutter!=setShutter || force){ //value change or write forced EEPROM_writeAnything(EEPROMADDRESS_SHUTTER, setShutter); _eepromwritten=true; } if (eeprom_setISO!=setISO || force){ //value change or write forced EEPROM_writeAnything(EEPROMADDRESS_ISO, setISO); _eepromwritten=true; } if (eeprom_meteringmode!=meteringmode || force){ //one of the values change or write forced EEPROM_writeAnything(EEPROMADDRESS_METERINGMODE, meteringmode); _eepromwritten=true; } if (!settingsStructEqual(eeprom_userSettings,userSettings) || force){ //one of the values change or write forced EEPROM_writeAnything(EEPROMADDRESS_USERSETTINGS, userSettings); _eepromwritten=true; } return _eepromwritten; } void loop() { loopmillis=millis(); //read millis for this cycle if (!eeprom_red){ //only executed one time eeprom_red=true; readEEPROM(); } handleInputs(); calculateFromEV(); updateDisplay(); checkLED(); } void readEEPROM(){ if (!digitalRead(PIN_BTNLEFT) && !digitalRead(PIN_BTNCENTER) && !digitalRead(PIN_BTNRIGHT) ){ //push all front buttons (left, center, right) to restore default settings analogWrite(PIN_LED,255); delay(1000); //1s led on confirmation analogWrite(PIN_LED,0); //LED OFF saveSettingsToEEPROM(true); //force writing. userSettings contains the default values at this point delay(200); analogWrite(PIN_LED,255); delay(200); //1s led on confirmation analogWrite(PIN_LED,0); //LED OFF delay(200); analogWrite(PIN_LED,255); delay(200); //1s led on confirmation analogWrite(PIN_LED,0); //LED OFF delay(1000); } //read current eeprom EEPROM_readAnything(EEPROMADDRESS_APERATURE, eeprom_setAperature); EEPROM_readAnything(EEPROMADDRESS_SHUTTER, eeprom_setShutter); EEPROM_readAnything(EEPROMADDRESS_ISO, eeprom_setISO); EEPROM_readAnything(EEPROMADDRESS_METERINGMODE, eeprom_meteringmode); EEPROM_readAnything(EEPROMADDRESS_USERSETTINGS, eeprom_userSettings); Serial.println(""); Serial.println("EEPROM eeprom settings"); Serial.println(eeprom_setAperature); Serial.println(eeprom_setShutter); Serial.println(eeprom_setISO); Serial.println("EEPROM eeprom_userSettings"); Serial.println(eeprom_userSettings.minimumAperatureIndex); Serial.println(eeprom_userSettings.aperatureSelectionMode); Serial.println(eeprom_userSettings.shutterSelectionMode); Serial.println(eeprom_userSettings.ISOSelectionMode); Serial.println(""); if (eeprom_userSettings.minimumAperatureIndex==255){ //after flashing eeprom contains FF.., check one value for (int i=0;i<10;i++){ //blink a few times to show that eeprom was clean delay(50); analogWrite(PIN_LED,255); delay(50); //1s led on confirmation analogWrite(PIN_LED,0); } }else{ // //apply setAperature=eeprom_setAperature; setShutter=eeprom_setShutter; setISO=eeprom_setISO; meteringmode=eeprom_meteringmode; userSettings=eeprom_userSettings; } } void handleInputs() { //Short press (true when button short pressed, on release) button_trigger=false; button_left=false; button_center=false; button_right=false; //long press (true when button is held down for BUTTONTIMEHOLD, on time elapsed) button_hold_trigger=false; button_hold_left=false; button_hold_center=false; button_hold_right=false; //even longer press button_hold_long_trigger=false; if (millis()-millis_lastinput>DEBOUNCETIME) //Button debouncing { //Trigger if (timebuttonpressed_trigger == 0 && !digitalRead(PIN_TRIGGER)){ //first time pressed down. (low when pressed) timebuttonpressed_trigger=loopmillis; //set time of button press timebuttonpressed_trigger_long=loopmillis; //set time of button press, for long hold timing }else if(timebuttonpressed_trigger != 0 && digitalRead(PIN_TRIGGER)){ //button released (was pressed) if (loopmillis-timebuttonpressed_trigger < BUTTONTIMEHOLD){ //short press button_trigger=true; } timebuttonpressed_trigger=0; //re-enable after short press and release from hold }else if(loopmillis-timebuttonpressed_trigger >= BUTTONTIMEHOLD && timebuttonpressed_trigger>0){ //held down long enough and not already hold triggered button_hold_trigger=true; timebuttonpressed_trigger=-1; //-1 as flag for hold triggered } if (timebuttonpressed_trigger_long>0 && loopmillis-timebuttonpressed_trigger_long >= BUTTONTIMEHOLDLONG && !digitalRead(PIN_TRIGGER)) { //button held down even longer, set hold long flag for as long as button is down button_hold_long_trigger=true; }else if(timebuttonpressed_trigger_long>0 && digitalRead(PIN_TRIGGER)){ //released timebuttonpressed_trigger_long=0; //reset long hold timing } //Left if (timebuttonpressed_left == 0 && !digitalRead(PIN_BTNLEFT)){ //first time pressed down. (low when pressed) timebuttonpressed_left=loopmillis; //set time of button press }else if(timebuttonpressed_left != 0 && digitalRead(PIN_BTNLEFT)){ //button released (was pressed) if (loopmillis-timebuttonpressed_left < BUTTONTIMEHOLD){ //short press button_left=true; } timebuttonpressed_left=0; //re-enable after short press and release from hold }else if(loopmillis-timebuttonpressed_left >= BUTTONTIMEHOLD && timebuttonpressed_left>0){ //held down long enough and not already hold triggered button_hold_left=true; timebuttonpressed_left=-1; //-1 as flag for hold triggered } //Center if (timebuttonpressed_center == 0 && !digitalRead(PIN_BTNCENTER)){ //first time pressed down. (low when pressed) timebuttonpressed_center=loopmillis; //set time of button press }else if(timebuttonpressed_center != 0 && digitalRead(PIN_BTNCENTER)){ //button released (was pressed) if (loopmillis-timebuttonpressed_center < BUTTONTIMEHOLD){ //short press button_center=true; } timebuttonpressed_center=0; //re-enable after short press and release from hold }else if(loopmillis-timebuttonpressed_center >= BUTTONTIMEHOLD && timebuttonpressed_center>0){ //held down long enough and not already hold triggered button_hold_center=true; timebuttonpressed_center=-1; //-1 as flag for hold triggered } //Right if (timebuttonpressed_right == 0 && !digitalRead(PIN_BTNRIGHT)){ //first time pressed down. (low when pressed) timebuttonpressed_right=loopmillis; //set time of button press }else if(timebuttonpressed_right != 0 && digitalRead(PIN_BTNRIGHT)){ //button released (was pressed) if (loopmillis-timebuttonpressed_right < BUTTONTIMEHOLD){ //short press button_right=true; } timebuttonpressed_right=0; //re-enable after short press and release from hold }else if(loopmillis-timebuttonpressed_right >= BUTTONTIMEHOLD && timebuttonpressed_right>0){ //held down long enough and not already hold triggered button_hold_right=true; timebuttonpressed_right=-1; //-1 as flag for hold triggered } } /* if (button_trigger || button_left || button_center || button_right){ Serial.println("Buttons short:"); Serial.print(button_trigger); Serial.print(button_left); Serial.print(button_center); Serial.println(button_right); } if (button_hold_trigger || button_hold_left || button_hold_center || button_hold_right){ Serial.println("Buttons long:"); Serial.print(button_hold_trigger); Serial.print(button_hold_left); Serial.print(button_hold_center); Serial.println(button_hold_right); } */ //Voltage float _vbat=map(analogRead(PIN_VBAT), 0,3560,0,8200)/1000.0; //180k and 300k voltage divider. 8,4V -> 3,15V=3910 if (_vbatLDRFILTERDELAY && loopmillis-last_ldrReading>LDRSWITCHDELAY) //multiple successive reading for filtering. each LDRFILTERDELAY ms and wait LDRSWITCHDELAY for first reading { analog_reading_filtering+=analogRead(PIN_LDR); analog_reading_count++; last_ldrReadingFilter=loopmillis; } if ( loopmillis-last_ldrReading>LDRDELAY ) //time over for one reading (low or high) { if (!digitalRead(PIN_BRIGHTMODE)){ analog_low=analog_reading_filtering/analog_reading_count; }else{ analog_high=analog_reading_filtering/analog_reading_count; if (debug_printreadings){ Serial.print(analog_low);//for calibration output Serial.print(";"); Serial.println(analog_high); } } /*Serial.print(analog_reading_count); Serial.print(" value="); Serial.println(analog_reading_filtering);*/ analog_reading_count=0; //reset analog_reading_filtering=0; //reset digitalWrite(PIN_BRIGHTMODE, !digitalRead(PIN_BRIGHTMODE)); //switch modes last_ldrReading=loopmillis; } //Lightsensor BH1750 if ( loopmillis-last_incidentReading>INCIDENTDELAY ) { incident = lightMeter.readLightLevel(); //value in lux from sensor last_incidentReading=loopmillis; } //Test asdf /* if ( !digitalRead(PIN_TRIGGER) ) { Serial.println("roundAperature"); for (float i=0.1;i<30;i+=0.5){ Serial.print(i); Serial.print(" -> "); Serial.println(roundAperature(i,1)); } Serial.println("roundShutter"); for (float i=1.0/8000;i<32;i*=2){ Serial.print(i,6); Serial.print(" -> "); Serial.print(roundShutter(i,2),6); Serial.print(" -- "); Serial.println(reciprocFloat(roundShutter(i,2))); } } Serial.println("calculateShutter at iso 100 f2.8"); for (float i=-2;i<18;i+=0.25){ Serial.print(i); Serial.print(" -> "); float test_calcshutter=calculateShutter(i, (uint16_t)100, 2.8); //Serial.println(test_calcshutter,6); float test_showShutter=roundShutter(test_calcshutter,2); Serial.print("rounded Shutter from "); Serial.print(test_calcshutter,6); Serial.print(" to "); Serial.println(test_showShutter,6); //asdf if (test_showShutter>0.25) //check shuttertime { //show full seconds Serial.print("int="); Serial.print(int(test_showShutter)); if (test_showShutter-int(test_showShutter)>0){ //has decimals Serial.print(" ,"); Serial.print((int)round( (test_showShutter-int(test_showShutter))*10)); //show one decimal } Serial.println(""); }else{ //show fraction of a second Serial.print("frac= 1/"); int _frac_showShutter = (int) ( (1.0f/( (int)(test_showShutter*1000000) ) )*1000000 ); Serial.print( _frac_showShutter ); Serial.println(""); } } Serial.println("calculateAperature at iso 100 1/250s"); for (float i=-2;i<18;i+=0.25){ Serial.print(i); Serial.print(" -> "); Serial.println(calculateAperature(i, (uint16_t)100, 1.0/250),6); } }*/ switch(displaymode){ case lightmeter: handleInputs_Lightmeter(); break; case settings: handleInputs_Settings(); break; case meteringmodeselection: handleInputs_Meteringmodeselection(); break; } if (millis()-millis_lastchange>TIME_AUTOPOWEROFF){ poweroff(); } if ( button_trigger || button_left || button_center || button_right ) { millis_lastchange=millis(); //for auto poweroff and auto closes millis_lastinput=millis(); //for debouncing } } void poweroff(){ bool _eepromwritten=saveSettingsToEEPROM(false); //save only changes to eeprom analogWrite(PIN_LED,255); //Blink led delay(100); analogWrite(PIN_LED,0); if (_eepromwritten){ delay(100); analogWrite(PIN_LED,255); delay(100); analogWrite(PIN_LED,0); } digitalWrite(PIN_ON, LOW); //Turn off hardware latch } void handleInputs_Lightmeter() { if ( button_center ) { //open meteringmode selection displaymode=meteringmodeselection; millis_opened_meteringmodeselection=loopmillis; } if ( button_hold_center ) { //Go to Settings displaymode=settings; } if (manualev_mode){ //Manual Ev //Value Change if ( button_left ) { ev-=1.0/userSettings.manualev_moveamount_frac; } if ( button_right ) { ev+=1.0/userSettings.manualev_moveamount_frac; } //Change Mode if ( button_hold_left ){ // Manual Ev -> Av setAperature=showAperature; setShutter=0; manualev_mode=false; } if ( button_hold_right ){ // Manual Ev -> T setShutter=showShutter; setAperature=0; manualev_mode=false; } }else if(setShutter==0){ //Aperature Priority manualev_mode=false; //Value Change if ( button_left ) { changeAperature(1); //Decrement Aperature } if ( button_right ) { changeAperature(-1); //Increment Aperature } //Change Mode if ( button_hold_left ){ //Av -> Manual Ev manualev_mode=true; } if ( button_hold_right ){ //Av -> T setShutter=showShutter; setAperature=0; } }else if (setAperature==0){ //Shutter Priority manualev_mode=false; //Value Change if ( button_left ) { changeShutter(1); //Decrement Aperature } if ( button_right ) { changeShutter(-1); //Increment Aperature } //Change Mode if ( button_hold_left ){ //T -> Av setAperature=showAperature; setShutter=0; } if ( button_hold_right ){ //T -> Manual Ev manualev_mode=true; } } if (button_trigger || button_hold_long_trigger) { //Trigger or very long hold ev_last=ev; ev=getEV(); //set ev to current measurement by selected mode if (evev_max){ //new ev is greater ev_max=ev; } debug_analog_high=analog_high; debug_analog_low=analog_low; //LED Brightness on trigger uint8_t triggerblinkbrightness=255; if (ev<4){ //dim led when dark triggerblinkbrightness=map(ev,2,4,5,255); } if (ev<2){ triggerblinkbrightness=5; } if (button_hold_long_trigger){ //low brightness on long hold triggerblinkbrightness=5; } blinkLED(20,triggerblinkbrightness); } if (button_hold_trigger) { //Trigger hold, resets ev_min,max and last ev_min=-255; //placeholder for "not set" ev_max=-255; ev_last=-255; //LED Brightness on trigger uint8_t triggerblinkbrightness=255; if (ev<4){ //dim led when dark triggerblinkbrightness=map(ev,4,0,255,50); } blinkLED(400,triggerblinkbrightness); } } void handleInputs_Settings() { if ( button_hold_center ) { //Go to Lightmeter settings_itemActive=false; //deselect item displaymode=lightmeter; } if (!settings_itemActive){ //select items if ( button_left ) { if (settings_selectedItem>0){ //not first item settings_selectedItem-=1; } } if ( button_right ) { if (settings_selectedItem1){ userSettings.aperatureSelectionMode-=1; } } if ( button_right ) { if (userSettings.aperatureSelectionMode1){ userSettings.shutterSelectionMode-=1; } } if ( button_right ) { if (userSettings.shutterSelectionMode1){ userSettings.manualev_moveamount_frac-=1; } } if ( button_right ) { if (userSettings.manualev_moveamount_fracTIME_METERINGMODESELECTION_CLOSE){ //Automatic close displaymode=lightmeter; } } float reciprocFloat(float p){ if (p<1){ return (1.0f/( (int)(p*1000000) ) )*1000000 ; }else{ return (1/p); } } float getEV(){ float _ev=0; if (meteringmode == METERINGMODE_REFLECTIVE){ //### SPOT //ev=map(analog_low,500, 3500 ,500, 1400)/100.0; //for testing //first prototype. //double highev=11.7400532 + 0.000216655133*analog_high + 0.00000111372253*pow(analog_high,2) + -0.000000000163800818 *pow(analog_high,3); //double lowev=-0.763427709 + 0.0138031137*analog_low + -0.00000576990095*pow(analog_low,2) + 0.000000000871611285*pow(analog_low,3); //calibration 20180413 //polynomial only //double highev=4.76455098 + 0.00961533698*analog_high - 0.00000399325586*pow(analog_high,2) + 0.000000000654378697 *pow(analog_high,3); //double lowev=-38.9534785 + 0.310426970*analog_low - 0.000769939297*pow(analog_low,2) + 0.000000639458491*pow(analog_low,3); double log_low=log(analog_low); //[-2.47999992e+02 5.59942657e+03 -4.74076773e+04 1.78389539e+05 -2.51728845e+05] double lowev=-251728.845 + 178389.539*log_low - 47407.6773*pow(log_low,2) + 5599.42657*pow(log_low,3) - 247.999992*pow(log_low,4); double log_high=log(analog_high); //[7.27310051e-02 -2.02919373e+00 2.23823220e+01 -1.22121768e+02 3.32574527e+02 -3.60445720e+02] double highev=-360.445720 + 332.574527*log_high - 122.121768*pow(log_high,2) + 22.3823220*pow(log_high,3) - 2.02919373*pow(log_high,4) + 0.0727310051*pow(log_high,5); /*Serial.print("analog_low="); //asdf Serial.print(analog_low); Serial.print(" log_low="); Serial.print(log_low); Serial.print(" lowev="); Serial.println(lowev); Serial.print("analog_high="); Serial.print(analog_high); Serial.print(" log_high="); Serial.print(log_high); Serial.print(" highev="); Serial.println(highev);*/ if (highev>2){ _ev=highev; Serial.println("using high ev"); }else if(lowev<1){ _ev=lowev; Serial.println("using low ev"); }else{ //mix of both float mix=min(1.0, max(0.0,(lowev-1)/(2-1))); //0 to 1, 0-> use only lowev, 1-> use only highev _ev=lowev*(1-mix)+highev*mix; Serial.print("mixing mix="); Serial.println(mix); } Serial.print("EV="); Serial.println(_ev); }else if (meteringmode == METERINGMODE_INCIDENT){ //### INCIDENT _ev = luxToEv(incident*INCIDENT_CORRECTION_FACTOR); } return _ev; } void calculateFromEV() { if (setAperature>0){ //Aperature Priority showAperature=setAperature; //use user set Aperature showShutter=calculateShutter(ev,setISO, setAperature); }else if(setShutter>0){ //Shutter Priority showShutter=setShutter; //use user set Shutter showAperature=calculateAperature(ev, setISO, setShutter); } } double evToLux(double ev) { return pow(2, ev) * 2.5; } double luxToEv(uint16_t lux){ if (lux <= 2){ return 0; } return log (lux/2.5) / log (2); } float calculateShutter(float pEv, uint16_t pIso, float pAperature) //returns calculated Shutter speed given Ev, ISO and Aperature { //EV = log2 ( 100* Aperature^2 / (ISO * Time )) //100* Aperature^2 / (2^EV * ISO) = Time return (100.0 * pow( pAperature,2) ) / (pow(2,pEv)*pIso); } float calculateAperature(float pEv, uint16_t pIso, float pShutter) //returns mathematical aperature in x1 { //EV = log2 ( 100* Aperature^2 / (ISO * Time )) // sqrt( 2^EV *(ISO * Time ) /100 ) = Aperature return sqrt( pow(2,pEv) * pIso * pShutter / 100.0 ) ; } float roundShutter(float pShutter, uint8_t pMethod) //round shutter to typical values { uint8_t _index=findShutterIndex(pShutter,pMethod); //use closest shutter value switch(pMethod){ case 1: // return shuttertimes1[_index]; break; case 2: // return shuttertimes2[_index]; break; } } float roundAperature(float pAperature, uint8_t pMethod) //round Aperature (x1) to typical values. method=0 -> leave, 1=full stops, 2=half stops, 3=third stops { if (pMethod==0){ return pAperature; } uint8_t closest_index=findAperatureIndex(pAperature,pMethod); //use closest aperature value switch(pMethod){ case 1: //full stops return aperaturesFull[closest_index]; break; case 2: //half stops //return float ( pow(sqrt(sqrt(2)), _index-2) ); return aperaturesHalf[closest_index]; break; case 3: //third stops return aperaturesThird[closest_index]; //return float ( pow(cbrt(sqrt(2)), _index-2) ); break; } } void changeAperature(int8_t pchange){ //pchange>0 means more light exposure (brighter image) uint8_t _newAperatureIndex=findAperatureIndex(setAperature,userSettings.aperatureSelectionMode); uint8_t _maximumAperatureIndex=0; switch(userSettings.aperatureSelectionMode){ //check max case 1: //full stops _maximumAperatureIndex=sizeof(aperaturesFull)/sizeof(float); break; case 2: //half stops _maximumAperatureIndex=sizeof(aperaturesHalf)/sizeof(float); break; case 3: //third stops _maximumAperatureIndex=sizeof(aperaturesThird)/sizeof(float); break; } _newAperatureIndex-=pchange; //change aperature _newAperatureIndex=min(_newAperatureIndex,_maximumAperatureIndex-1); //maximum limit _newAperatureIndex=max(_newAperatureIndex,userSettings.minimumAperatureIndex); //minimum limit switch(userSettings.aperatureSelectionMode){ case 1: //full stops setAperature=aperaturesFull[_newAperatureIndex]; break; case 2: //half stops setAperature=aperaturesHalf[_newAperatureIndex]; break; case 3: //third stops setAperature=aperaturesThird[_newAperatureIndex]; break; } } uint8_t findAperatureIndex(float pAperature,uint8_t pMethod) //find index of closest aperature from given aperature tables (pMethod { float _minDistance=90000; float _lastminDistance=100000; uint8_t _index=userSettings.minimumAperatureIndex; uint8_t _maxindexpossible=0; switch(pMethod){ case 1: _maxindexpossible=APERATURESFULL_MAXINDEX; break; case 2: _maxindexpossible=APERATURESHALF_MAXINDEX; break; case 3: _maxindexpossible=APERATURESTHIRD_MAXINDEX; break; } while (_lastminDistance>_minDistance) //until distance increases { if (_index>_maxindexpossible){ //this index will be out of bounds return _maxindexpossible; } _lastminDistance=_minDistance; switch(pMethod){ case 1: //full stops _minDistance=abs( pAperature - aperaturesFull[_index] ); break; case 2: //half stops _minDistance=abs( pAperature - aperaturesHalf[_index] ); break; case 3: //third stops _minDistance=abs( pAperature - aperaturesThird[_index] ); break; } _index++; //next } return _index-2; //use index with closest value } void changeShutter(int8_t pchange){ //pchange>0 means more light exposure (brighter image) uint8_t _newShutterIndex=findShutterIndex(setShutter,userSettings.shutterSelectionMode); uint8_t _maximumShutterIndex=0; switch(userSettings.shutterSelectionMode){ //get max index from array case 1: _maximumShutterIndex=sizeof(shuttertimes1)/sizeof(float); break; case 2: _maximumShutterIndex=sizeof(shuttertimes2)/sizeof(float); break; } if (!( -pchange<0 && _newShutterIndex==0)){ //changed value would not yield negative index _newShutterIndex-=pchange; //change aperature _newShutterIndex=min(_newShutterIndex,_maximumShutterIndex-1); //maximum limit from array //_newShutterIndex=min(_newShutterIndex,maximumShutterIndex); //maximum limit from user settings } switch(userSettings.shutterSelectionMode){ case 1: // setShutter=shuttertimes1[_newShutterIndex]; break; case 2: // setShutter=shuttertimes2[_newShutterIndex]; break; } } uint8_t findShutterIndex(float pShutter,uint8_t pMethod) //find index of closest aperature from given aperature tables (pMethod { float _minDistance=abs(pShutter-shuttertimes1[0]); float _lastminDistance=_minDistance; uint8_t _index=0; uint8_t _maxindexpossible=0; switch(pMethod){ case 1: _maxindexpossible=SHUTTERTIMES1_MAXINDEX; break; case 2: _maxindexpossible=SHUTTERTIMES2_MAXINDEX; break; } while (_lastminDistance>=_minDistance) //until distance increases { if (_index>_maxindexpossible){ //this index will be out of bounds return _maxindexpossible; } _lastminDistance=_minDistance; switch(pMethod){ case 1: _minDistance=abs(pShutter - shuttertimes1[_index]); break; case 2: _minDistance=abs(pShutter - shuttertimes2[_index]); break; } _index++; //next } return _index-2; //use index with closest value } void changeISO(int8_t pchange){ //pchange>0 means more light exposure (brighter image), higher iso uint8_t _newISOIndex=findISOIndex(setISO,userSettings.ISOSelectionMode); uint8_t _maximumISOIndex=0; switch(userSettings.ISOSelectionMode){ //get max index from array case 1: _maximumISOIndex=sizeof(isoFull)/sizeof(float); break; case 2: _maximumISOIndex=sizeof(isoThird)/sizeof(float); break; } if (!( pchange<0 && _newISOIndex==0)){ //changed value would not yield negative index _newISOIndex+=pchange; //change iso _newISOIndex=min(_newISOIndex,_maximumISOIndex-1); //maximum limit from array //_newISOIndex=min(_newISOIndex,maximumISOIndex); //maximum limit from user settings } switch(userSettings.ISOSelectionMode){ case 1: // setISO=isoFull[_newISOIndex]; break; case 2: // setISO=isoThird[_newISOIndex]; break; } } uint8_t findISOIndex(float pISO,uint8_t pMethod) //find index of closest iso from given iso table (pMethod) { float _minDistance=abs(pISO-isoFull[0]); float _lastminDistance=_minDistance; uint8_t _index=0; while (_lastminDistance>=_minDistance) //until distance increases { _lastminDistance=_minDistance; switch(pMethod){ case 1: _minDistance=abs(pISO - isoFull[_index]); break; case 2: _minDistance=abs(pISO - isoThird[_index]); break; } _index++; //next } return _index-2; } void updateDisplay() { if (loopmillis-last_displayupdate>=DISPLAY_UPDATEDELAY){ switch(displaymode){ case lightmeter: updateDisplay_Lightmeter(); break; case settings: updateDisplay_Settings(); break; case meteringmodeselection: updateDisplay_Meteringmodeselection(); break; } last_displayupdate=loopmillis; display.display(); } } void updateDisplay_Lightmeter() //Lightmeter display { #define xpos_aperature 2 #define ypos_aperature 29 #define xpos_shutter 50 #define ypos_shutter 29 #define xpos_icon 112 //128-16 #define ypos_icon 29 #define xpos_debug 0 #define ypos_debug 63-7 #define xpos_iso 2 #define ypos_iso 63-7-9 display.clearDisplay(); display.setTextColor(WHITE); //Aperature float _showAperature=roundAperature(showAperature,userSettings.aperatureSelectionMode); display.setTextSize(1); display.setCursor(xpos_aperature,ypos_aperature); display.print("F"); display.setTextSize(2); display.setCursor(display.getCursorX(),display.getCursorY()); display.print(int(_showAperature)); if ( int( (_showAperature-int(_showAperature) )*10 ) !=0){ //has a decimal display.setTextSize(1); display.setCursor(display.getCursorX()-2,display.getCursorY()+7); display.print("."); display.setCursor(display.getCursorX()+1,display.getCursorY()-7); display.setTextSize(2); display.setCursor(display.getCursorX()-2,display.getCursorY()); display.print( (int)round( (_showAperature-int(_showAperature) )*10)); } //Aperature border if (setAperature>0){ //Aperature Priority Mode if (!manualev_mode){ //selection display.drawRect(xpos_aperature-2, ypos_aperature-2, 40, 18, WHITE); //normal border }else{ //manual ev selection drawRectCorners(xpos_aperature-2, ypos_aperature-2, 40, 18, 5,WHITE); //alternative border } } //Shutter display.setCursor(xpos_shutter,ypos_shutter); float _showShutter=roundShutter(showShutter,userSettings.shutterSelectionMode); //Serial.print("rounded Shutter from "); Serial.print(showShutter); Serial.print(" to "); Serial.println(_showShutter); //asdf if (_showShutter>0.25) //check shuttertime { //show full seconds display.print(int(_showShutter)); if (_showShutter-int(_showShutter)>0){ //has decimals display.setTextSize(1); display.setCursor(display.getCursorX()-2,display.getCursorY()+7); display.print("."); display.setCursor(display.getCursorX()+1,display.getCursorY()-7); display.setTextSize(2); display.setCursor(display.getCursorX()-2,display.getCursorY()); display.print( (int)round( (_showShutter-int(_showShutter))*10)); //show one decimal } display.setTextSize(1); display.setCursor(display.getCursorX(),display.getCursorY()+7); display.print("s"); }else{ //show fraction of a second display.setTextSize(1); display.print("1"); display.drawLine(display.getCursorX()+1,display.getCursorY(), display.getCursorX()-1, display.getCursorY()+9, WHITE); display.setTextSize(2); display.setCursor(display.getCursorX()+2,display.getCursorY()); int _frac_showShutter = (int) ( (1.0f/( (int)(_showShutter*1000000) ) )*1000000 ); display.print( _frac_showShutter ); display.setTextSize(1); display.setCursor(display.getCursorX(),display.getCursorY()+7); display.print("s"); } //Shutter border if (setShutter>0){ //Shutter Priority Mode if (!manualev_mode){ //selection display.drawRect(xpos_shutter-2, ypos_shutter-2, 60, 18, WHITE); //normal border }else{ //manual ev selection drawRectCorners(xpos_shutter-2, ypos_shutter-2, 60, 18, 5, WHITE); //alternative border } } if (meteringmode == METERINGMODE_REFLECTIVE){ display.drawXBitmap(xpos_icon, ypos_icon, icon_spot_bits, icon_spot_width, icon_spot_height, WHITE); }else if (meteringmode == METERINGMODE_INCIDENT) { display.drawXBitmap(xpos_icon, ypos_icon, icon_incident_bits, icon_incident_width,icon_incident_height, WHITE); } //ISO display.setCursor(xpos_iso,ypos_iso); display.setTextSize(1); display.print("ISO "); display.print(setISO); //EV Scale uint8_t _evrangedisplay=10;//which range to display. Default value if (ev_min>-254 && ev_max>-254){ //values set _evrangedisplay=ev_max-ev_min; } if (_evrangedisplay<6){ //minimum range _evrangedisplay=6; } //#define FULLEVLINEDISTANCE 9 //#define THIRDEVLINEDISTANCE 3 uint8_t FULLEVLINEDISTANCE=((int)(WIDTH/(_evrangedisplay+2))/3)*3; //scale distance to fit evrange_display with safety margin, floor to multiples of 3 uint8_t THIRDEVLINEDISTANCE=FULLEVLINEDISTANCE/3; uint8_t _max_evvalues_displayed=(WIDTH/(FULLEVLINEDISTANCE)); #define ypos_evtext 7 #define ypos_icon_arrow 6 int8_t _startev=-5; //first ev to display, 13 ev values can fit on screen /*if (ev>2 && (ev_min<-254 || ev_min>2)){ //TODO make ev scale start better _startev=0; } if (ev>_max_ev_displayed-2 || ev_max>_max_ev_displayed-2){ _startev=5+ev-(_max_ev_displayed-2); }*/ float _evrangemargin=(_max_evvalues_displayed-_evrangedisplay)/2.0; //space left on both sides between evnrange (min to max) and display width if (_evrangemargin<0){ //bound _evrangemargin=0; } if (ev_min>-254 && ev_max>-254 ){ //minmax values set if (ev>=ev_min && ev<=ev_max){ //arrow between min and max _startev=(ev_max-ev_min)/2+ev_min - _max_evvalues_displayed/2; //center of evmin and max at display center }else{ //arrow outside of ev min max range if (evev_max) { //on the right _startev=ev+_evrangemargin-_evrangedisplay; } } }else{ //ev min max values not set yet _startev=ev-_max_evvalues_displayed/2; //center _startev=(int(_startev/(_max_evvalues_displayed/2)))*(_max_evvalues_displayed/2); //floor to multiples of (_evrangedisplay/2) } uint8_t xpos_arrow=(ev-_startev*1.0) *FULLEVLINEDISTANCE+1; //calculate display position for ev display.setTextSize(1); display.drawLine(THIRDEVLINEDISTANCE,0,THIRDEVLINEDISTANCE,0,WHITE); //first third line display.drawLine(THIRDEVLINEDISTANCE+THIRDEVLINEDISTANCE,0,THIRDEVLINEDISTANCE+THIRDEVLINEDISTANCE,0,WHITE); //second third line for (uint8_t _fullevline=1;_fullevline<=_max_evvalues_displayed;_fullevline++){ //with fullevlindistance=9 and WIDTH=128 -> <=13 int8_t _current_evvalue = _fullevline+_startev; uint8_t _xpos_center_evtext = _fullevline*FULLEVLINEDISTANCE; //center of current ev line x pos display.drawLine(_xpos_center_evtext,0,_xpos_center_evtext,2,WHITE); display.drawLine(_xpos_center_evtext+THIRDEVLINEDISTANCE,0,_xpos_center_evtext+THIRDEVLINEDISTANCE,0,WHITE); display.drawLine(_xpos_center_evtext+THIRDEVLINEDISTANCE+THIRDEVLINEDISTANCE,0,_xpos_center_evtext+THIRDEVLINEDISTANCE+THIRDEVLINEDISTANCE,0,WHITE); if ((FULLEVLINEDISTANCE>9 && _current_evvalue<10 && _current_evvalue>=0) || (FULLEVLINEDISTANCE>12) || _fullevline%2==1){ //display every single digit ev if distance greater 9 OR if dist. gr. 12 OTHERWISE only every second digit uint8_t _evtextmove=2; //movement of left point of text to the left. Compensation for center position if (_current_evvalue>9 || _current_evvalue<0){ //text has two digits _evtextmove=5; } if ( (xpos_arrow-7 > _xpos_center_evtext) || (xpos_arrow+7 < _xpos_center_evtext) ) { //drawn arrow not too close to ev text display.setCursor(_xpos_center_evtext-_evtextmove,ypos_evtext); display.print(_current_evvalue); //EV Text at scale line } } } //Arrow at current ev float _ev_decimals=abs(ev-((int)ev)); display.drawXBitmap(xpos_arrow - icon_arrow_width/2.0, ypos_icon_arrow, icon_arrow_bits, icon_arrow_width, icon_arrow_height, WHITE); //arrow icon if (manualev_mode){ //in manual ev mode display.drawXBitmap(xpos_arrow - icon_arrow_width/2.0 -1, ypos_icon_arrow, icon_arrow_bits, icon_arrow_width, icon_arrow_height, WHITE); //arrow icon //draw bold display.drawXBitmap(xpos_arrow - icon_arrow_width/2.0 +1, ypos_icon_arrow, icon_arrow_bits, icon_arrow_width, icon_arrow_height, WHITE); //arrow icon //draw bold display.drawXBitmap(xpos_arrow - icon_arrow_width/2.0 , ypos_icon_arrow-1, icon_arrow_bits, icon_arrow_width, icon_arrow_height, WHITE); //arrow icon //draw bold } uint8_t _xpos_current_evtext_move=5; //for text centering if (_ev_decimals <= 0.1666 || _ev_decimals > 0.8333) { //without fraction displayed _xpos_current_evtext_move=2; } int _displayev=(int)ev; if (_ev_decimals > 0.8333 ){ if (ev>=0){ //ev is positive _displayev=(int)(ev+1);//EV Value under arrow. Ceil }else if (ev<0){ //ev is negative _displayev=(int)(ev-1);//EV Value under arrow. Ceil (negative) } } //int _xpos_current_fraction_move=0; //move fraction icon if (_displayev>=10 || ev<-0.1666){ //displayev is two digits long (>=10 or negative sign) _xpos_current_evtext_move+=6; //move digits to left. positive means left } display.setCursor(xpos_arrow-_xpos_current_evtext_move,ypos_icon_arrow+icon_arrow_height+2); //current ev text position if (ev<0 && _displayev==0){ //ev is negative but displayev is zero display.print("-"); // add minus in front } display.print(_displayev); //EV Value under arrow if ( _ev_decimals > 0.1666 && _ev_decimals <= 0.4166) { display.drawXBitmap(xpos_arrow , ypos_icon_arrow+icon_arrow_height-(icon_one_third_height-8)/2 +2, icon_one_third_bits, icon_one_third_width, icon_one_third_height, WHITE); //one third }else if ( _ev_decimals > 0.4166 && _ev_decimals <= 0.5833) { display.drawXBitmap(xpos_arrow , ypos_icon_arrow+icon_arrow_height-(icon_one_half_height-8)/2 +2, icon_one_half_bits, icon_one_half_width, icon_one_half_height, WHITE); //one half }else if ( _ev_decimals > 0.5833 && _ev_decimals <= 0.8333) { display.drawXBitmap(xpos_arrow , ypos_icon_arrow+icon_arrow_height-(icon_two_third_height-8)/2 +2, icon_two_third_bits, icon_two_third_width, icon_two_third_height, WHITE); //two third } //ev min & max int16_t xpos_ev_min=(ev_min-_startev*1.0) *FULLEVLINEDISTANCE; //calculate display position for ev int16_t xpos_ev_max=(ev_max-_startev*1.0) *FULLEVLINEDISTANCE; //calculate display position for ev bool arrow_is_between_minmax=true; if (xpos_arrow<=xpos_ev_min || xpos_arrow>=xpos_ev_max){ arrow_is_between_minmax=false; //selected ev is not between min and max ev } if (ev_min>-254 && xpos_ev_min>=0 && xpos_ev_min3 && arrow_is_between_minmax){ //arrow is not overlaying line and is in between min and max //display.drawLine(xpos_ev_min,4,xpos_arrow ,4,WHITE); //line from left horizontally to arrow display.drawLine(xpos_ev_min,5,xpos_arrow - 4,5,WHITE); //line from left horizontally to arrow } } if (ev_max>-254 && xpos_ev_max>=0 && xpos_ev_max3 && arrow_is_between_minmax){ //arrow is not overlaying line and is in between min and max //display.drawLine(xpos_ev_max,4,xpos_arrow ,4,WHITE); //line from right horizontally to arrow display.drawLine(xpos_ev_max,5,xpos_arrow + 2,5,WHITE); //line from right horizontally to arrow } } if (ev_min>-254 && ev_max>-254){ //evmin and max are set uint8_t _xpos_ev_min_line=xpos_ev_min; uint8_t _xpos_ev_max_line=xpos_ev_max; if (xpos_ev_min<0){ _xpos_ev_min_line=0; }else if (xpos_ev_min>=WIDTH-1){ _xpos_ev_min_line=WIDTH-1; } if (xpos_ev_max<0){ _xpos_ev_max_line=0; }else if (xpos_ev_max>=WIDTH-1){ _xpos_ev_max_line=WIDTH-1; } display.drawLine(_xpos_ev_min_line,4,_xpos_ev_max_line ,4,WHITE); //draw single line between them } for (int8_t i=-(xpos_arrow-xpos_ev_min)/FULLEVLINEDISTANCE;i<(xpos_ev_max-xpos_arrow)/FULLEVLINEDISTANCE;i++){ //draw black lines for every zone border display.drawLine(xpos_arrow+i*FULLEVLINEDISTANCE+FULLEVLINEDISTANCE/2,4,xpos_arrow+i*FULLEVLINEDISTANCE+FULLEVLINEDISTANCE/2 ,5,BLACK); //erase part of horizontal line } //DEBUG Message display.setTextSize(1); display.setCursor(xpos_debug,ypos_debug); display.print(vbat,2); display.print("V "); /*display.print("Ev="); display.print(ev); display.print(" |"); display.print(incident);*/ /*display.print(debug_analog_low); display.print(" : "); display.print(debug_analog_high);*/ /*display.print(ev_min,1); display.print("<"); display.print(ev,1); display.print("<"); display.print(ev_max,1);*/ display.setCursor(xpos_debug+50,ypos_debug-5); if (ev_min>-254 && ev>=ev_min) { //ev min set display.print("-"); display.print(ev-ev_min,1); }else{ display.print("/"); } display.print(" <> "); if (ev_max>-254 && ev<=ev_max){ display.print("+"); display.print(ev_max-ev,1); }else{ display.print("/"); } } void updateDisplay_Settings() { display.clearDisplay(); display.setTextColor(WHITE); display.setTextSize(1); #define SETTINGS_YPOS_INCREMENT 9 #define SETTINGS_XPOS_OFFSET 1 display.setCursor(SETTINGS_XPOS_OFFSET,0); //absolute position for first item for (uint8_t _currentItemIndex=0;_currentItemIndex<=SETTINGS_SELECTEDITEM_MAX;_currentItemIndex++) { if (settings_selectedItem==_currentItemIndex){ if (settings_itemActive){ display.drawRect(0, display.getCursorY()-2, 126 , 11, WHITE); }else{ display.fillCircle(2, display.getCursorY()+3,2, WHITE); //x,y,r,color } display.setCursor(display.getCursorX()+5,display.getCursorY()); //move text to the right } display.print(settingStrings[_currentItemIndex]); switch(_currentItemIndex){ //if values need to be shown case 0: display.print(setISO); break; case 1: display.print(settingsnameAperatureSelectionMode[userSettings.aperatureSelectionMode-1]); break; case 2: display.print(settingsnameShutterSelectionMode[userSettings.shutterSelectionMode-1]); break; case 3: display.print("1/"); display.print(userSettings.manualev_moveamount_frac);display.print(" EV"); break; //case 4 is power off, no value to display here } display.setCursor(SETTINGS_XPOS_OFFSET,display.getCursorY()+SETTINGS_YPOS_INCREMENT); //move cursor to next entry } } void updateDisplay_Meteringmodeselection() { display.clearDisplay(); display.setTextColor(WHITE); #define xpos_center_icon_spot 30 #define ypos_icon_spot 20 #define xpos_center_icon_incident 97 #define ypos_icon_incident 20 display.drawXBitmap(xpos_center_icon_spot-icon_spot_width/2, ypos_icon_spot, icon_spot_bits, icon_spot_width, icon_spot_height, WHITE); //Spot icon display.drawRect(xpos_center_icon_spot-icon_spot_width/2-2, ypos_icon_spot-2, icon_spot_width+4,icon_spot_height+4,WHITE); display.drawXBitmap(xpos_center_icon_incident-icon_incident_width/2, ypos_icon_incident, icon_incident_bits, icon_incident_width, icon_incident_height, WHITE); //incident icon display.drawRect(xpos_center_icon_incident-icon_incident_width/2-2, ypos_icon_incident-2, icon_incident_width+4,icon_incident_height+4,WHITE); display.setTextSize(1); display.setCursor(xpos_center_icon_spot-10,ypos_icon_spot+icon_spot_height +6); //text position upper left display.print("SPOT"); //7x5 characters, xpos_center_icon_spot-(5*#chars /2) display.setCursor(xpos_center_icon_incident-20,ypos_icon_incident+icon_incident_height+6); //text position upper left display.print("INCIDENT"); if (loopmillis-millis_opened_meteringmodeselection>=DELAY_METERINGMODESELECTION_FLASHLIGHT){ blinkLED(500); //turn led on continously } } void drawRectCorners(uint8_t px,uint8_t py, uint8_t pw, uint8_t ph, uint8_t pcornerlength, uint8_t pc){ //px py are top left display.drawLine(px,py,px+pcornerlength,py, pc); display.drawLine(px,py,px,py+pcornerlength, pc); display.drawLine(px+pw,py, px+pw-pcornerlength,py, pc); display.drawLine(px+pw,py, px+pw,py+pcornerlength, pc); display.drawLine(px+pw,py+ph, px+pw-pcornerlength,py+ph, pc); display.drawLine(px+pw,py+ph, px+pw,py+ph-pcornerlength, pc); display.drawLine(px,py+ph, px+pcornerlength,py+ph, pc); display.drawLine(px,py+ph, px,py+ph-pcornerlength, pc); } void blinkLED(long duration){ blinkLED(duration,255); } void blinkLED(long duration,uint8_t brightness){ //digitalWrite(PIN_LED,HIGH); analogWrite(PIN_LED,brightness); millis_ledoff=loopmillis+duration; } void checkLED(){ if (loopmillis>=millis_ledoff && digitalRead(PIN_LED)){ //digitalWrite(PIN_LED,LOW); analogWrite(PIN_LED,0); //LED OFF } } template int EEPROM_writeAnything(int ee, const T& value) { //from http://www.stm32duino.com/viewtopic.php?t=1576 const byte* p = (const byte*)(const void*)&value; unsigned int i; for (i = 0; i < sizeof(value); i++) EEPROM.write(ee++, *p++); return i; } template int EEPROM_readAnything(int ee, T& value) { byte* p = (byte*)(void*)&value; unsigned int i; for (i = 0; i < sizeof(value); i++) *p++ = EEPROM.read(ee++); return i; }