Hi, nur noch mal zur Info...
der Bug wurde gefunden und behoben! Siehe https://github.com/ethersex/ethersex/commit/bb9c079805473d0c8f35a5b7d752dab305b2c487 Danke fr den Tipp mit den Pullups. Ich habe bisher keine im Einsatz. Gru Florian Von: reiner [mailto:rei...@netzadmins.de] Gesendet: Sonntag, 24. August 2014 11:13 An: Florian Asche; e...@users.sourceforge.net Cc: ethersex-devel@list.zerties.org Betreff: Re: [ethersex-devel] BMP085 mit unbrauchbaren Daten - UrsacheN & LsungEN .cpp .h example Am 23.05.2014 um 23:50 schrieb Florian Asche: Hi, konnte das Problem leider nicht wirklich eingrenzen. :/ Gru Flo -----Ursprngliche Nachricht----- Von: e...@users.sourceforge.net <mailto:e...@users.sourceforge.net> [mailto:e...@users.sourceforge.net <mailto:e...@users.sourceforge.net> ] Gesendet: Freitag, 22. November 2013 08:06 An: Florian Asche Cc: reiner; ethersex-devel@list.zerties.org <mailto:ethersex-devel@list.zerties.org> Betreff: Re: [ethersex-devel] BMP085 mit unbrauchbaren Daten Hallo Florian, ich habe den BMP085 inzwischen mit einem anderen Sourcecode (Bascom) getestet, dort funktioniert er mit Erfolg. Das Problem liegt also bei Ethersex. Patch willkommen. Nachdem ich nun ein breadboard habe und mal eben vernnftige Tests machen kann anstelle der Net-IO Krokoklemkrmpfe .... Mit Arduino Mini einen BMP085 via I2C Bus mit je zwei mal 10k pullups!!! nach vcc siehe Example.ino Adafruit_BMP085.h Adafruit_BMP085.cpp Ursachen bzw. Nebenbedingungen: Ohne die Pullups bei I2C nur Schrott. Hngt von der individuellen Schaltung ab in der man arbeitet ob die bereits drin sind oder nicht und ist immer im Einzelfall zu prfen. Ob das mit 5k oder 15k geht weiss ich auch nicht, testen testen ..... Nchste Besonderheit beim BMP085: BMP085 arbeitet NATIV mit 3.3 Volt !!!! Mein Modul - gesponsort von Wody2001 - hat einen Miniregler onboard so das es mit 5 Volt arbeitet!!!! Ich habe das erst gar nicht bemerkt da sooooo klitzeklein und war dadurch auch nie auf der grnen Seite was die Arbeitsbedingungen angeht. Mein Teil macht jetzt jedenfalls sauber das was es soll. Habe fr den Fall der F_e_lle mal dazu gepackt. Mich wrde interessieren ob es an den elektrischen Bedingungen oder am Code liegt bei Ethersex. BTW hat jemand einen DS75 dazu bringen knnen mit mehr als 9 Bit Genauigkeit zu arbeiten? Der DS75 hat lt. Datenblatt im gegensatz zum LM75 eine programmierbare Auflsung im Konfigregister Bit 5 und 7. Ich kann das Register setzen wie ich will (default immer 0 nach einschalten) 0x20 = 10 Bit, 0x40 = 11Bit oder 0x60= 12 Bit resolution aber ich bekomme immer nur 0,5 Grad Sprnge raus. Irgend jemand da schon mal erfolg gehabt oder mache ich da einen Denkfehler? Suche auch noch Infos um eine Arduino mini (ist so praktisch auf kleiner Platine fertig zum spottpreis) im low power mode laufen zu lassen wegen Solarbetrieb und Solarmessungen. Mchte die Panels mglichst klein halten bzw. mit einem 2*2cm Panel auskommen fr alles. MfG Reiner Example.ino: ####################################################### /* An Arduino Mini and BMP085 and a 4*20 LCD. To put Data to LCD you have to convert to string! to get the correct altitude you have to pass the actual barometric pressure in PASCAL not hektopascal!! along with the call. */ #include <LiquidCrystal.h> const int numRows = 4; const int numCols = 20; LiquidCrystal lcd(12, 11, 5, 4, 3, 2); // Pinbelegung LCD definieren hier 4draht = Nibble #include <Wire.h> // I2C einbinden #include <Adafruit_BMP085.h> // Adafruit Bibliothek einbinden #define bmp85Adresse 0x77 // Andresse unter der ein BMP85 zu erreichen ist Adafruit_BMP085 bmp; // Variable fr Adafruit Lib definieren char dataString[7]; // gelesene Daten als String aufbereitet: (-xx)x.x double temp; // gelesene Temperatur als double double druck; // gelesener Druck bzw. Hhe als double float high; // geleseene Hoehe als float int i; // Zhlvariable um das Display jeden100. loop zu lschen um Dezimalverschiebungen zu bereinigen void setup() { lcd.begin(numCols,numRows); lcd.setCursor(0,0); lcd.write(" Temperatur und "); lcd.setCursor(0,1); lcd.write("Luftdruck von BMP085"); lcd.setCursor(0,3); lcd.write(" C by Netzadmins.de"); delay(10000); lcd.clear(); Serial.begin(9600); // Sensor BMP085 initialisieren if (!bmp.begin()) { Serial.println("Keinen gltigen BMP085 Sensor gefunden!"); while (true) {} } Wire.begin(); } void loop() { for (i = 1; i<=100; i++) { Serial.print("Temperatur: "); // readTemperature() Temperatur C auslesen und anzeigen Serial.print(bmp.readTemperature()); Serial.print(" "); // Hier mssen wir ein wenig tricksen Serial.write(176); // um das -Zeichen korrekt darzustellen Serial.println("C"); temp=bmp.readTemperature(); dtostrf(temp, 4, 1, dataString); //dtostrf(floatVar, minStringWidthIncDecimalPoint, numVarsAfterDecimal, charBuf); (standard avr-libc function) lcd.setCursor(0,0); lcd.write(dataString); lcd.write(" Grad Celsius"); Serial.print("Luftdruck: "); // readPressure() Luftdruck in Pa auslesen und anzeigen druck = bmp.readPressure(); Serial.print(druck); Serial.print(" Pa = "); druck = druck / 100; Serial.print(druck); Serial.println(" hektoPascal"); druck=bmp.readPressure(); dtostrf(druck, 4, 1, dataString); //dtostrf(floatVar, minStringWidthIncDecimalPoint, numVarsAfterDecimal, charBuf); (standard avr-libc function) lcd.setCursor(0,1); lcd.write(dataString); lcd.write(" Pascal"); druck=druck/100; dtostrf(druck, 4, 2, dataString); //dtostrf(floatVar, minStringWidthIncDecimalPoint, numVarsAfterDecimal, charBuf); (standard avr-libc function) lcd.setCursor(0,2); lcd.write(dataString); lcd.write(" hektoPascal"); Serial.print("Hoehe: "); // readAltitude() Hhe in meter auslesen und anzeigen high = bmp.readAltitude(101500); Serial.print(high); Serial.println(" Meter"); dtostrf(high, 4, 2, dataString); //dtostrf(floatVar, minStringWidthIncDecimalPoint, numVarsAfterDecimal, charBuf); (standard avr-libc function) lcd.setCursor(0,3); lcd.write(dataString); lcd.write(" m Altitude"); Serial.println(); // Leerzeile anzeigen delay(200); // 0,2 Sekunden warten } if (i=99) { lcd.clear(); } } ####################################################### Adafruit_BMP085.h: /*************************************************** This is a library for the Adafruit BMP085/BMP180 Barometric Pressure + Temp sensor Designed specifically to work with the Adafruit BMP085 or BMP180 Breakout ----> http://www.adafruit.com/products/391 <http://www.adafruit.com/products/391> ----> http://www.adafruit.com/products/1603 <http://www.adafruit.com/products/1603> These displays use I2C to communicate, 2 pins are required to interface Adafruit invests time and resources providing this open source code, please support Adafruit and open-source hardware by purchasing products from Adafruit! Written by Limor Fried/Ladyada for Adafruit Industries. BSD license, all text above must be included in any redistribution ****************************************************/ #ifndef ADAFRUIT_BMP085_H #define ADAFRUIT_BMP085_H #if (ARDUINO >= 100) #include "Arduino.h" #else #include "WProgram.h" #endif #include "Wire.h" #define BMP085_DEBUG 0 #define BMP085_I2CADDR 0x77 #define BMP085_ULTRALOWPOWER 0 #define BMP085_STANDARD 1 #define BMP085_HIGHRES 2 #define BMP085_ULTRAHIGHRES 3 #define BMP085_CAL_AC1 0xAA // R Calibration data (16 bits) #define BMP085_CAL_AC2 0xAC // R Calibration data (16 bits) #define BMP085_CAL_AC3 0xAE // R Calibration data (16 bits) #define BMP085_CAL_AC4 0xB0 // R Calibration data (16 bits) #define BMP085_CAL_AC5 0xB2 // R Calibration data (16 bits) #define BMP085_CAL_AC6 0xB4 // R Calibration data (16 bits) #define BMP085_CAL_B1 0xB6 // R Calibration data (16 bits) #define BMP085_CAL_B2 0xB8 // R Calibration data (16 bits) #define BMP085_CAL_MB 0xBA // R Calibration data (16 bits) #define BMP085_CAL_MC 0xBC // R Calibration data (16 bits) #define BMP085_CAL_MD 0xBE // R Calibration data (16 bits) #define BMP085_CONTROL 0xF4 #define BMP085_TEMPDATA 0xF6 #define BMP085_PRESSUREDATA 0xF6 #define BMP085_READTEMPCMD 0x2E #define BMP085_READPRESSURECMD 0x34 class Adafruit_BMP085 { public: Adafruit_BMP085(); boolean begin(uint8_t mode = BMP085_ULTRAHIGHRES); // by default go highres float readTemperature(void); int32_t readPressure(void); int32_t readSealevelPressure(float altitude_meters = 0); float readAltitude(float sealevelPressure = 101325); // std atmosphere uint16_t readRawTemperature(void); uint32_t readRawPressure(void); private: int32_t computeB5(int32_t UT); uint8_t read8(uint8_t addr); uint16_t read16(uint8_t addr); void write8(uint8_t addr, uint8_t data); uint8_t oversampling; int16_t ac1, ac2, ac3, b1, b2, mb, mc, md; uint16_t ac4, ac5, ac6; }; #endif // ADAFRUIT_BMP085_H ####################################################### Adafruit_BMP085.cpp: /*************************************************** This is a library for the Adafruit BMP085/BMP180 Barometric Pressure + Temp sensor Designed specifically to work with the Adafruit BMP085 or BMP180 Breakout ----> http://www.adafruit.com/products/391 <http://www.adafruit.com/products/391> ----> http://www.adafruit.com/products/1603 <http://www.adafruit.com/products/1603> These displays use I2C to communicate, 2 pins are required to interface Adafruit invests time and resources providing this open source code, please support Adafruit and open-source hardware by purchasing products from Adafruit! Written by Limor Fried/Ladyada for Adafruit Industries. BSD license, all text above must be included in any redistribution ****************************************************/ #include "Adafruit_BMP085.h" Adafruit_BMP085::Adafruit_BMP085() { } boolean Adafruit_BMP085::begin(uint8_t mode) { if (mode > BMP085_ULTRAHIGHRES) mode = BMP085_ULTRAHIGHRES; oversampling = mode; Wire.begin(); if (read8(0xD0) != 0x55) return false; /* read calibration data */ ac1 = read16(BMP085_CAL_AC1); ac2 = read16(BMP085_CAL_AC2); ac3 = read16(BMP085_CAL_AC3); ac4 = read16(BMP085_CAL_AC4); ac5 = read16(BMP085_CAL_AC5); ac6 = read16(BMP085_CAL_AC6); b1 = read16(BMP085_CAL_B1); b2 = read16(BMP085_CAL_B2); mb = read16(BMP085_CAL_MB); mc = read16(BMP085_CAL_MC); md = read16(BMP085_CAL_MD); #if (BMP085_DEBUG == 1) Serial.print("ac1 = "); Serial.println(ac1, DEC); Serial.print("ac2 = "); Serial.println(ac2, DEC); Serial.print("ac3 = "); Serial.println(ac3, DEC); Serial.print("ac4 = "); Serial.println(ac4, DEC); Serial.print("ac5 = "); Serial.println(ac5, DEC); Serial.print("ac6 = "); Serial.println(ac6, DEC); Serial.print("b1 = "); Serial.println(b1, DEC); Serial.print("b2 = "); Serial.println(b2, DEC); Serial.print("mb = "); Serial.println(mb, DEC); Serial.print("mc = "); Serial.println(mc, DEC); Serial.print("md = "); Serial.println(md, DEC); #endif return true; } int32_t Adafruit_BMP085::computeB5(int32_t UT) { int32_t X1 = (UT - (int32_t)ac6) * ((int32_t)ac5) >> 15; int32_t X2 = ((int32_t)mc << 11) / (X1+(int32_t)md); return X1 + X2; } uint16_t Adafruit_BMP085::readRawTemperature(void) { write8(BMP085_CONTROL, BMP085_READTEMPCMD); delay(5); #if BMP085_DEBUG == 1 Serial.print("Raw temp: "); Serial.println(read16(BMP085_TEMPDATA)); #endif return read16(BMP085_TEMPDATA); } uint32_t Adafruit_BMP085::readRawPressure(void) { uint32_t raw; write8(BMP085_CONTROL, BMP085_READPRESSURECMD + (oversampling << 6)); if (oversampling == BMP085_ULTRALOWPOWER) delay(5); else if (oversampling == BMP085_STANDARD) delay(8); else if (oversampling == BMP085_HIGHRES) delay(14); else delay(26); raw = read16(BMP085_PRESSUREDATA); raw <<= 8; raw |= read8(BMP085_PRESSUREDATA+2); raw >>= (8 - oversampling); /* this pull broke stuff, look at it later? if (oversampling==0) { raw <<= 8; raw |= read8(BMP085_PRESSUREDATA+2); raw >>= (8 - oversampling); } */ #if BMP085_DEBUG == 1 Serial.print("Raw pressure: "); Serial.println(raw); #endif return raw; } int32_t Adafruit_BMP085::readPressure(void) { int32_t UT, UP, B3, B5, B6, X1, X2, X3, p; uint32_t B4, B7; UT = readRawTemperature(); UP = readRawPressure(); #if BMP085_DEBUG == 1 // use datasheet numbers! UT = 27898; UP = 23843; ac6 = 23153; ac5 = 32757; mc = -8711; md = 2868; b1 = 6190; b2 = 4; ac3 = -14383; ac2 = -72; ac1 = 408; ac4 = 32741; oversampling = 0; #endif B5 = computeB5(UT); #if BMP085_DEBUG == 1 Serial.print("X1 = "); Serial.println(X1); Serial.print("X2 = "); Serial.println(X2); Serial.print("B5 = "); Serial.println(B5); #endif // do pressure calcs B6 = B5 - 4000; X1 = ((int32_t)b2 * ( (B6 * B6)>>12 )) >> 11; X2 = ((int32_t)ac2 * B6) >> 11; X3 = X1 + X2; B3 = ((((int32_t)ac1*4 + X3) << oversampling) + 2) / 4; #if BMP085_DEBUG == 1 Serial.print("B6 = "); Serial.println(B6); Serial.print("X1 = "); Serial.println(X1); Serial.print("X2 = "); Serial.println(X2); Serial.print("B3 = "); Serial.println(B3); #endif X1 = ((int32_t)ac3 * B6) >> 13; X2 = ((int32_t)b1 * ((B6 * B6) >> 12)) >> 16; X3 = ((X1 + X2) + 2) >> 2; B4 = ((uint32_t)ac4 * (uint32_t)(X3 + 32768)) >> 15; B7 = ((uint32_t)UP - B3) * (uint32_t)( 50000UL >> oversampling ); #if BMP085_DEBUG == 1 Serial.print("X1 = "); Serial.println(X1); Serial.print("X2 = "); Serial.println(X2); Serial.print("B4 = "); Serial.println(B4); Serial.print("B7 = "); Serial.println(B7); #endif if (B7 < 0x80000000) { p = (B7 * 2) / B4; } else { p = (B7 / B4) * 2; } X1 = (p >> 8) * (p >> 8); X1 = (X1 * 3038) >> 16; X2 = (-7357 * p) >> 16; #if BMP085_DEBUG == 1 Serial.print("p = "); Serial.println(p); Serial.print("X1 = "); Serial.println(X1); Serial.print("X2 = "); Serial.println(X2); #endif p = p + ((X1 + X2 + (int32_t)3791)>>4); #if BMP085_DEBUG == 1 Serial.print("p = "); Serial.println(p); #endif return p; } int32_t Adafruit_BMP085::readSealevelPressure(float altitude_meters) { float pressure = readPressure(); return (int32_t)(pressure / pow(1.0-altitude_meters/44330, 5.255)); } float Adafruit_BMP085::readTemperature(void) { int32_t UT, B5; // following ds convention float temp; UT = readRawTemperature(); #if BMP085_DEBUG == 1 // use datasheet numbers! UT = 27898; ac6 = 23153; ac5 = 32757; mc = -8711; md = 2868; #endif B5 = computeB5(UT); temp = (B5+8) >> 4; temp /= 10; return temp; } float Adafruit_BMP085::readAltitude(float sealevelPressure) { float altitude; float pressure = readPressure(); altitude = 44330 * (1.0 - pow(pressure /sealevelPressure,0.1903)); return altitude; } /*********************************************************************/ uint8_t Adafruit_BMP085::read8(uint8_t a) { uint8_t ret; Wire.beginTransmission(BMP085_I2CADDR); // start transmission to device #if (ARDUINO >= 100) Wire.write(a); // sends register address to read from #else Wire.send(a); // sends register address to read from #endif Wire.endTransmission(); // end transmission Wire.beginTransmission(BMP085_I2CADDR); // start transmission to device Wire.requestFrom(BMP085_I2CADDR, 1);// send data n-bytes read #if (ARDUINO >= 100) ret = Wire.read(); // receive DATA #else ret = Wire.receive(); // receive DATA #endif Wire.endTransmission(); // end transmission return ret; } uint16_t Adafruit_BMP085::read16(uint8_t a) { uint16_t ret; Wire.beginTransmission(BMP085_I2CADDR); // start transmission to device #if (ARDUINO >= 100) Wire.write(a); // sends register address to read from #else Wire.send(a); // sends register address to read from #endif Wire.endTransmission(); // end transmission Wire.beginTransmission(BMP085_I2CADDR); // start transmission to device Wire.requestFrom(BMP085_I2CADDR, 2);// send data n-bytes read #if (ARDUINO >= 100) ret = Wire.read(); // receive DATA ret <<= 8; ret |= Wire.read(); // receive DATA #else ret = Wire.receive(); // receive DATA ret <<= 8; ret |= Wire.receive(); // receive DATA #endif Wire.endTransmission(); // end transmission return ret; } void Adafruit_BMP085::write8(uint8_t a, uint8_t d) { Wire.beginTransmission(BMP085_I2CADDR); // start transmission to device #if (ARDUINO >= 100) Wire.write(a); // sends register address to read from Wire.write(d); // write data #else Wire.send(a); // sends register address to read from Wire.send(d); // write data #endif Wire.endTransmission(); // end transmission }
_______________________________________________ Ethersex-devel mailing list Ethersex-devel@list.zerties.org http://list.zerties.org/cgi-bin/mailman/listinfo/ethersex-devel
