{"id":816,"date":"2021-03-16T11:57:40","date_gmt":"2021-03-16T10:57:40","guid":{"rendered":"https:\/\/www.gods69.com\/?p=816"},"modified":"2021-05-07T23:41:52","modified_gmt":"2021-05-07T21:41:52","slug":"project-arduino","status":"publish","type":"post","link":"https:\/\/www.gods69.com\/index.php\/2021\/03\/16\/project-arduino\/","title":{"rendered":"Project Arduino"},"content":{"rendered":"\n

Voici le listing d’un petit logiciel qui m’occupe ces derniers jours… A la base c’etait pour tester un capteur de pression atmosph\u00e9rique\/temp\u00e9rature BMP280 et un petit \u00e9cran OLED sur un microcontr\u00f4leur PIC en langage BASIC (sous ProtonIDE). Comme il existe des biblioth\u00e8ques toutes pr\u00eates sur Arduino j’ai utilis\u00e9 un Arduino UNO et quelques fils sur une plaque d’essai pour mon montage. J’ai remarqu\u00e9 que la temp\u00e9rature \u00e9tait plus \u00e9lev\u00e9e de deux degr\u00e9s que la valeur lue de mon thermom\u00e8tre , j’ai aussi utilis\u00e9 un capteur DS18B20 qui semble plus pr\u00e9cis. Voici le listing du code et quelques photos du montage…<\/p>\n\n\n\n

\/*\n * Arduino with SSD1306 OLED display (128x64 Pixel) and\n * BMP280 barometric pressure & temperature sensor.\n * Ajout capteur ds18B20  par Carlos Pires Serra \n *\/\n \n#include <Wire.h>              \/\/ include Arduino wire library (required for I2C devices)\n#include <Adafruit_SSD1306.h>  \/\/ include Adafruit SSD1306 OLED display driver\n#include <Adafruit_BMP280.h>   \/\/ include Adafruit BMP280 sensor library\n#include <OneWire.h>           \/\/ bibliotheque OneWire\n#include <DS18B20.h>           \/\/ bibliotheque DS18B20\n \n#define OLED_RESET  4          \/\/ define display reset pin\nAdafruit_SSD1306 display(OLED_RESET);  \/\/ initialize Adafruit display library\n \n\/\/ define device I2C address: 0x76 or 0x77 (0x77 is library default address)\n#define BMP280_I2C_ADDRESS  0x76\n#define ONE_WIRE_BUS 2          \/\/ Pin D2 pour le bus onewire\nOneWire oneWire(ONE_WIRE_BUS);  \/\/ initialisation des\nDS18B20 sensor(&oneWire);       \/\/ bibliotheques\nAdafruit_BMP280  bmp280;  \/\/ initialize Adafruit BMP280 library\n \nvoid setup(void)\n{\n  delay(1000);            \/\/ wait a second\n  sensor.begin();         \/\/ Demarrage capteur ds18B20\n \n  \/\/ initialize the SSD1306 OLED display with I2C address = 0x3C\n  display.begin(SSD1306_SWITCHCAPVCC, 0x3C);\n \n  \/\/ clear the display buffer.\n  display.clearDisplay();\n \n    display.setTextSize(1);              \/\/ text size = 1\n    display.setTextColor(WHITE, BLACK);  \/\/ set text color to white and black background\n    display.setCursor(0, 0);             \/\/ move cursor to position (15, 0) pixel\n \/\/ display.println(\"BMP280 SENSOR\");\n    display.display();                   \/\/ update the display\n \n  \/\/ initialize the BMP280 sensor\n  if( bmp280.begin(BMP280_I2C_ADDRESS) == 0 )\n  {  \/\/ connection error or device address wrong!\n    display.setTextSize(1);              \/\/ text size = 1\n    display.setCursor(0, 0);\n    display.println(\"Connection\");\n    display.print(\"Error\");\n    display.display();                   \/\/ update the display\n    while(1);                            \/\/ stay here\n  }\n \n  display.display();                     \/\/ update the display\n \n \n}\n \nchar _buffer[9];\n \nvoid loop()\n{    \n  display.clearDisplay();\n  display.setCursor(0, 0);\n  sensor.requestTemperatures();\n  while (!sensor.isConversionComplete());  \/\/ wait until sensor is ready\n  \n  \/\/ get temperature and pressure from library\n  float temp     = bmp280.readTemperature();   \/\/ get temperature\n  float pressure = bmp280.readPressure();      \/\/ get pressure\n \n  \/\/ print data on the LCD\n  \/\/ 1: print temperature\n  if(temp < 0)\n    sprintf(_buffer, \"-%02u.%02u C\", (int)abs(temp), (int)(abs(temp) * 100) % 100 );\n  else\n    sprintf(_buffer, \" %02u.%02u C\", (int)temp, (int)(temp * 100) % 100 );\n  display.print(\"Temperature:\");\n  display.println(_buffer);\n \n \n  \/\/ 2: print pressure\n  sprintf(_buffer, \"%04u.%02u\", (int)(pressure\/100), (int)((uint32_t)pressure % 100));\n  display.print(\"Pression: \");\n  display.print(_buffer);\n  display.println(\" hPa\");\n  display.println();\n  \n  display.print(\"Temp_18B20 : \");               \/\/ Affichage Temperature du DS18B20\n  display.print(sensor.getTempC());\n  display.println(\" C\");\n \n  \n  \/\/ update the display\n  display.display();\n  \n \n  delay(2500);  \/\/ Attente 2.5 secondes pour la prochaine lecture\n \n}\n<\/pre><\/div>\n\n\n\n
  • \"\"
    Arduino<\/figcaption><\/figure><\/li>
  • \"\"
    Final<\/figcaption><\/figure><\/li>
  • \"\"
    2ene Test<\/figcaption><\/figure><\/li>
  • \"\"
    1er Test<\/figcaption><\/figure><\/li><\/ul><\/figure>\n","protected":false},"excerpt":{"rendered":"
    Voici le listing d’un petit logiciel qui m’occupe ces derniers jours… A la base c’etait pour tester un capteur de pression atmosph\u00e9rique\/temp\u00e9rature BMP280 et un petit \u00e9cran OLED sur un microcontr\u00f4leur PIC en langage BASIC (sous ProtonIDE). Comme il existe des biblioth\u00e8ques toutes pr\u00eates sur Arduino j’ai utilis\u00e9 un Arduino UNO et quelques fils sur une plaque d’essai pour mon montage. J’ai remarqu\u00e9 que la temp\u00e9rature \u00e9tait plus \u00e9lev\u00e9e de deux degr\u00e9s que la valeur lue de mon thermom\u00e8tre , j’ai aussi utilis\u00e9 un capteur DS18B20 qui semble plus pr\u00e9cis. Voici le listing du code et quelques photos du montage…<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6],"tags":[5],"class_list":["post-816","post","type-post","status-publish","format-standard","hentry","category-microcontroleur","tag-microcontroleur"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.gods69.com\/index.php\/wp-json\/wp\/v2\/posts\/816","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.gods69.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.gods69.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.gods69.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.gods69.com\/index.php\/wp-json\/wp\/v2\/comments?post=816"}],"version-history":[{"count":27,"href":"https:\/\/www.gods69.com\/index.php\/wp-json\/wp\/v2\/posts\/816\/revisions"}],"predecessor-version":[{"id":882,"href":"https:\/\/www.gods69.com\/index.php\/wp-json\/wp\/v2\/posts\/816\/revisions\/882"}],"wp:attachment":[{"href":"https:\/\/www.gods69.com\/index.php\/wp-json\/wp\/v2\/media?parent=816"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.gods69.com\/index.php\/wp-json\/wp\/v2\/categories?post=816"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.gods69.com\/index.php\/wp-json\/wp\/v2\/tags?post=816"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}