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This commit is contained in:
Jérôme Delacotte
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// IoT_SHT31LP_Example_1.54inchEPD : GxEPD demo example for Waveshare 1.54 e-Paper display or Good Display GDEP015OC1
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//
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// https://www.aliexpress.com/item/200x200-1-54inch-E-Ink-display-module-Without-PCB-Communicate-via-SPI-interface-Supports-various-controller/32811540997.html
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// "200x200, 1.54inch E-Ink display module with embedded controller Communicate via SPI interface Supports various controller boards"
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//
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// https://www.aliexpress.com/store/product/E-paper-display-GDEW0154T8-with-demo-Board-DESTM32-S2/600281_32813958757.html
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// https://www.aliexpress.com/store/product/E001-1-54-inch-partial-refresh-Small-size-dot-matrix-e-paper-display/600281_32815089163.html
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//
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// Created for my IoT sensor network by Jean-Marc Zingg, adapted for demo example use
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//
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// for low power deep sleep mode connect D0 pin to reset pin of ESP8266, e.g. through 0.1k
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//
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// for supply voltage measurement connect 5V pin through 300k to A0
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// Supporting Arduino Forum Topics:
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// Waveshare e-paper displays with SPI: http://forum.arduino.cc/index.php?topic=487007.0
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// Good Dispay ePaper for Arduino : https://forum.arduino.cc/index.php?topic=436411.0
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// SPECIAL mapping for IoT from Waveshare 1.54inch e-Paper to Wemos D1 mini
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// BUSY -> D6, RST -> D4, DC -> D3, CS -> D8, CLK -> D5, DIN -> D7, GND -> GND, 3.3V -> 3.3V
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// mapping example for AVR, UNO, NANO etc.
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// BUSY -> 7, RST -> 9, DC -> 8, C S-> 10, CLK -> 13, DIN -> 11
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#define SENSOR A0
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#define PERIOD_MINUTES 3
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#define USE_GxGDEP015OC1
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//#define USE_MicroOLED
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//#define USE_NETWORK
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//#define RE_INIT_NEEDED
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// SDA is on D2 GPIO04
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// SCL is on D1 GPIO05
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#include <Wire.h>
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#include "Adafruit_SHT31.h"
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#ifdef USE_GxGDEP015OC1
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// include library, include base class, make path known
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#include <GxEPD.h>
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// select the display class to use
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#include <GxGDEP015OC1/GxGDEP015OC1.h>
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#include <GxIO/GxIO_SPI/GxIO_SPI.h>
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#include <GxIO/GxIO.h>
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GxIO_Class io(SPI, SS, D3, D4);
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// D2 reserved for SDA, use D6 (MISO) instead
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GxEPD_Class display(io, D4, D6);
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// FreeFonts from Adafruit_GFX
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#include <Fonts/FreeSansBold18pt7b.h>
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#include <Fonts/FreeSansBold24pt7b.h>
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#endif
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Adafruit_SHT31 myHumidity;
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#include <ESP8266WiFi.h>
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#ifdef ESP8266
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extern "C"
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{
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#include "user_interface.h"
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}
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#endif
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struct parameter_type
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{
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float delta_t;
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float delta_h;
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float sv_factor;
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};
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parameter_type parameter[] =
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{
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{ -0.5, +0.0, 0.00575 }, // 0 : ESP_1191B4
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{ -0.5, +0.0, 0.00575 }, // 1 : ESP_118E0F
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{ -0.5, +0.0, 0.00558 }, // 2 : ESP_246056 SHT21 D6RGP
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{ -0.5, +3.0, 0.00558 }, // 3 : ESP_0BE239 HTU21 D5247 (+3% on 23° 63%)
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{ -0.5, +0.0, 0.00558 }, // 4 : ESP_CC9456 HTU21 ok
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{ -0.5, +0.0, 0.00665 }, // 5 : ESP_CAE971 SHT21 D6RGP
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{ -0.0, +5.0, 0.00667 }, // 6 : ESP_D092C6 SHT21 D5M5E (rot) 300k
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{ -0.5, +0.0, 0.00667 }, // 7 : ESP_D09477 SHT21 D6RGP 300k
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{ -0.5, +0.0, 0.00575 }, // 8 : ESP_CC9268 SHT21 D6RGP
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{ -0.0, +0.0, 0.00558 }, // 9 : ESP_CC844F HTU21 test
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{ -0.0, +0.0, 0.00575 }, // 10 : ESP_CC9268 SHT31
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{ -0.0, +0.0, 0.00667 }, // 11 : ESP_192589 SHT31 300k
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{ -0.0, +0.0, 0.00558 }
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};
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int pidx = 11;
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const char* ssid = "4D2DE33";
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const char* password = "F4DFD1D1";
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const int port = 80;
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IPAddress IoTMasterIP = {192, 168, 4, 1};
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// Create an instance of the server
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// specify the port to listen on as an argument
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WiFiServer server(port);
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WiFiClient client;
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#ifdef USE_MicroOLED
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// include this after ESP8266WiFi.h to avoid conflicting swap
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#include <SFE_MicroOLED.h> // Include the SFE_MicroOLED library
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// MicroOLED Definition
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#define PIN_RESET 255 //
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#define DC_JUMPER 0 // I2C Addres: 0 - 0x3C, 1 - 0x3D
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// MicroOLED Object Declaration
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MicroOLED oled(PIN_RESET, DC_JUMPER); // I2C declaration
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#endif
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byte ReadDHT(byte dht_dat[]);
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void sendUpdateDHT22();
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float SupplyVoltage = 5.0;
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//#define Serial if(0) Serial
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void setup()
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{
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Serial.begin(115200);
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delay(10);
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Serial.println();
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Serial.println("setup");
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SupplyVoltage = system_adc_read() * parameter[pidx].sv_factor;
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Serial.print("SupplyVoltage=");
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Serial.println(SupplyVoltage);
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if (SupplyVoltage < 3.4) // Li 18650
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{
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Serial.println("SupplyVoltage low - going to sleep deep for 10 min");
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system_deep_sleep(600000000);
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return;
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}
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myHumidity.begin(SHT31_DEFAULT_ADDR); // 0x44
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#ifdef USE_NETWORK
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RandomInfo();
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#ifdef RE_INIT_NEEDED
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WiFi.persistent(true);
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WiFi.mode(WIFI_STA); // switch off AP
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WiFi.setAutoConnect(true);
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WiFi.setAutoReconnect(true);
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WiFi.disconnect();
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#endif
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if (!WiFi.getAutoConnect() || ( WiFi.getMode() != WIFI_STA) || (WiFi.SSID() != ssid))
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{
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Serial.println();
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Serial.print("wifi_station_dhcpc_status()=");
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Serial.println(wifi_station_dhcpc_status());
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Serial.print("WiFi.getAutoConnect()=");
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Serial.println(WiFi.getAutoConnect());
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Serial.print("WiFi.SSID()=");
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Serial.println(WiFi.SSID());
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WiFi.mode(WIFI_STA); // switch off AP
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Serial.print("Connecting to ");
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Serial.println(ssid);
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WiFi.begin(ssid, password);
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}
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int ConnectTimeout = 20; // 5 seconds
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while (WiFi.status() != WL_CONNECTED)
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{
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delay(500);
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Serial.print(".");
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Serial.print(WiFi.status());
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if (--ConnectTimeout <= 0)
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{
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Serial.println("WiFi connect timeout - going to sleep deep for 10 min");
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system_deep_sleep(600000000);
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return;
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}
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}
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Serial.println("");
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Serial.println("WiFi connected");
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// Start the server
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server.begin();
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Serial.println("Server started");
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// Print the IP address
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Serial.println(WiFi.localIP());
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WiFi.setOutputPower(20.5);
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#endif // USE_NETWORK
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#ifdef USE_MicroOLED
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oled.begin(); // Initialize the OLED
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oled.clear(ALL); // Clear the display's internal memory
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oled.clear(PAGE); // Clear the buffer.
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#endif
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#ifdef USE_GxGDEP015OC1
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display.init();
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#endif
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}
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void loop()
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{
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sendUpdateDHT22();
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Serial.println("system_deep_sleep");
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system_deep_sleep(60000000 * PERIOD_MINUTES);
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delay(120000);
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}
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double SaturationVaporPressure(double Temperature)
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{
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return 6.1078 * pow(10.0, ((7.5 * Temperature) / (237.3 + Temperature)));
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}
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double VaporPressure(double Humidity, double Temperature)
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{
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return Humidity / 100 * SaturationVaporPressure(Temperature);
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}
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double Humidity(double Temperature, double DewpointTemperature)
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{
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return 100 * SaturationVaporPressure(DewpointTemperature) / SaturationVaporPressure(Temperature);
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}
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double DewpointTemperature(double Humidity, double Temperature)
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{
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double v = log10(VaporPressure(Humidity, Temperature) / 6.1078);
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return 237.3 * v / (7.5 - v);
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}
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double AbsoluteHumidity(double Humidity, double Temperature)
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{
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return 10e4 * 18.016 / 8314.3 * VaporPressure(Humidity, Temperature) / (Temperature + 273.15);
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}
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double AbsoluteHumidityFromDewpoint(double DewpointTemperature, double Temperature)
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{
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return 10e4 * 18.016 / 8314.3 * SaturationVaporPressure(DewpointTemperature) / (Temperature + 273.15);
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}
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void sendUpdateDHT22()
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{
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float humidity = myHumidity.readHumidity() + parameter[pidx].delta_h;
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float temperature = myHumidity.readTemperature() + parameter[pidx].delta_t;
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float dewpoint = DewpointTemperature(humidity, temperature);
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//float water = AbsoluteHumidity(humidity, temperature);
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float waterFDP = AbsoluteHumidityFromDewpoint(dewpoint, temperature);
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char dC[3] = {'°', 'C', 0};
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Serial.print("Current humdity = ");
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Serial.print(humidity);
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Serial.print("% ");
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Serial.print("temperature = ");
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Serial.print(temperature);
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Serial.print(dC);
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// Serial.print(" water=");
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// Serial.print(water);
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// Serial.print("g/m3");
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Serial.print(" water=");
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Serial.print(waterFDP);
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Serial.print("g/m3");
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Serial.print(" dewpoint = ");
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Serial.print(dewpoint);
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Serial.println(dC);
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#ifdef USE_MicroOLED
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int middleY = oled.getLCDHeight() / 2;
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oled.clear(PAGE);
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oled.setCursor(0, 0);
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oled.setFontType(2);
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oled.print(temperature, 1);
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oled.setFontType(0); // no '°' in font 1 !
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// oled.setCursor(oled.getLCDWidth()-oled.getFontWidth(), 0);
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oled.print(" ");
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oled.write(247); // '°' in font 0
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oled.setCursor(0, middleY);
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oled.setFontType(2);
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oled.print(humidity, 1);
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oled.setFontType(0);
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// oled.setCursor(oled.getLCDWidth()-oled.getFontWidth(), middleY);
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oled.print(" %");
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oled.display();
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#endif
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#ifdef USE_GxGDEP015OC1
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uint16_t middleY = display.height() / 2;
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display.setRotation(3);
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display.fillScreen(GxEPD_WHITE);
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display.setTextColor(GxEPD_BLACK);
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display.setFont(&FreeSansBold24pt7b);
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display.setTextSize(2);
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display.setCursor(8, 72);
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display.print(temperature, 1);
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display.setFont(&FreeSansBold18pt7b);
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display.setTextSize(2);
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display.setCursor(16, 146);
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display.print(humidity, 1);
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display.setTextSize(1);
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display.print("%");
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display.setCursor(16, 198);
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display.print(dewpoint, 1);
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display.print(" ");
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display.print(SupplyVoltage, 1);
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display.print("V");
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display.update();
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#endif
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#ifdef USE_NETWORK
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if (client.connect(IoTMasterIP, port))
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{
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Serial.println("IoTMaster connected successfully");
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String postDHT22 = "POST /update/DHT22/?device=" +
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String(wifi_station_get_hostname()) +
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"&temperature=" + String(temperature, 1) +
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"&humidity=" + String(humidity, 1) +
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"&water=" + String(waterFDP, 1) +
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"&dewpoint=" + String(dewpoint, 1) +
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"&supply=" + String(SupplyVoltage, 1) +
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" HTTP/1.1\n Host: " + String(WiFi.localIP()) + "Connection: close\n";
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client.print(postDHT22);
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}
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else
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{
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Serial.println("IoTMaster connection failed - going to sleep deep for 10 min");
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system_deep_sleep(600000000);
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}
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#endif
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}
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void RandomInfo()
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{
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long r1 = os_random();
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long r2 = os_random();
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Serial.print("random1 : ");
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Serial.println(r1, HEX);
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Serial.print("random2 : ");
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Serial.println(r2, HEX);
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}
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