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Diffstat (limited to 'learning_examples')
3 files changed, 166 insertions, 0 deletions
diff --git a/learning_examples/DHT_Unified_Sensor_esp32/DHT_Unified_Sensor_esp32.ino b/learning_examples/DHT_Unified_Sensor_esp32/DHT_Unified_Sensor_esp32.ino new file mode 100644 index 0000000..f3a91e3 --- /dev/null +++ b/learning_examples/DHT_Unified_Sensor_esp32/DHT_Unified_Sensor_esp32.ino @@ -0,0 +1,85 @@ +// DHT Temperature & Humidity Sensor +// Unified Sensor Library Example +// Written by Tony DiCola for Adafruit Industries +// Released under an MIT license. + +// REQUIRES the following Arduino libraries: +// - DHT Sensor Library: https://github.com/adafruit/DHT-sensor-library +// - Adafruit Unified Sensor Lib: https://github.com/adafruit/Adafruit_Sensor + +#include <Adafruit_Sensor.h> +#include <DHT.h> +#include <DHT_U.h> + +#define DHTPIN 4 // Digital pin connected to the DHT sensor +// Feather HUZZAH ESP8266 note: use pins 3, 4, 5, 12, 13 or 14 -- +// Pin 15 can work but DHT must be disconnected during program upload. + +// Uncomment the type of sensor in use: +//#define DHTTYPE DHT11 // DHT 11 +#define DHTTYPE DHT11 // DHT 22 (AM2302) +//#define DHTTYPE DHT21 // DHT 21 (AM2301) + +// See guide for details on sensor wiring and usage: +// https://learn.adafruit.com/dht/overview + +DHT_Unified dht(DHTPIN, DHTTYPE); + +uint32_t delayMS; + +void setup() { + Serial.begin(9600); + // Initialize device. + dht.begin(); + Serial.println(F("DHTxx Unified Sensor Example")); + // Print temperature sensor details. + sensor_t sensor; + dht.temperature().getSensor(&sensor); + Serial.println(F("------------------------------------")); + Serial.println(F("Temperature Sensor")); + Serial.print (F("Sensor Type: ")); Serial.println(sensor.name); + Serial.print (F("Driver Ver: ")); Serial.println(sensor.version); + Serial.print (F("Unique ID: ")); Serial.println(sensor.sensor_id); + Serial.print (F("Max Value: ")); Serial.print(sensor.max_value); Serial.println(F("°C")); + Serial.print (F("Min Value: ")); Serial.print(sensor.min_value); Serial.println(F("°C")); + Serial.print (F("Resolution: ")); Serial.print(sensor.resolution); Serial.println(F("°C")); + Serial.println(F("------------------------------------")); + // Print humidity sensor details. + dht.humidity().getSensor(&sensor); + Serial.println(F("Humidity Sensor")); + Serial.print (F("Sensor Type: ")); Serial.println(sensor.name); + Serial.print (F("Driver Ver: ")); Serial.println(sensor.version); + Serial.print (F("Unique ID: ")); Serial.println(sensor.sensor_id); + Serial.print (F("Max Value: ")); Serial.print(sensor.max_value); Serial.println(F("%")); + Serial.print (F("Min Value: ")); Serial.print(sensor.min_value); Serial.println(F("%")); + Serial.print (F("Resolution: ")); Serial.print(sensor.resolution); Serial.println(F("%")); + Serial.println(F("------------------------------------")); + // Set delay between sensor readings based on sensor details. + delayMS = sensor.min_delay / 1000; +} + +void loop() { + // Delay between measurements. + delay(delayMS); + // Get temperature event and print its value. + sensors_event_t event; + dht.temperature().getEvent(&event); + if (isnan(event.temperature)) { + Serial.println(F("Error reading temperature!")); + } + else { + Serial.print(F("Temperature: ")); + Serial.print(event.temperature); + Serial.println(F("°C")); + } + // Get humidity event and print its value. + dht.humidity().getEvent(&event); + if (isnan(event.relative_humidity)) { + Serial.println(F("Error reading humidity!")); + } + else { + Serial.print(F("Humidity: ")); + Serial.print(event.relative_humidity); + Serial.println(F("%")); + } +} diff --git a/learning_examples/DHTtester_esp32/DHTtester_esp32.ino b/learning_examples/DHTtester_esp32/DHTtester_esp32.ino new file mode 100644 index 0000000..f12bfb5 --- /dev/null +++ b/learning_examples/DHTtester_esp32/DHTtester_esp32.ino @@ -0,0 +1,74 @@ +// Example testing sketch for various DHT humidity/temperature sensors +// Written by ladyada, public domain + +// REQUIRES the following Arduino libraries: +// - DHT Sensor Library: https://github.com/adafruit/DHT-sensor-library +// - Adafruit Unified Sensor Lib: https://github.com/adafruit/Adafruit_Sensor + +#include "DHT.h" + +#define DHTPIN 4 // Digital pin connected to the DHT sensor +// Feather HUZZAH ESP8266 note: use pins 3, 4, 5, 12, 13 or 14 -- +// Pin 15 can work but DHT must be disconnected during program upload. + +// Uncomment whatever type you're using! +//#define DHTTYPE DHT11 // DHT 11 +#define DHTTYPE DHT11 // DHT 22 (AM2302), AM2321 +//#define DHTTYPE DHT21 // DHT 21 (AM2301) + +// Connect pin 1 (on the left) of the sensor to +5V +// NOTE: If using a board with 3.3V logic like an Arduino Due connect pin 1 +// to 3.3V instead of 5V! +// Connect pin 2 of the sensor to whatever your DHTPIN is +// Connect pin 3 (on the right) of the sensor to GROUND (if your sensor has 3 pins) +// Connect pin 4 (on the right) of the sensor to GROUND and leave the pin 3 EMPTY (if your sensor has 4 pins) +// Connect a 10K resistor from pin 2 (data) to pin 1 (power) of the sensor + +// Initialize DHT sensor. +// Note that older versions of this library took an optional third parameter to +// tweak the timings for faster processors. This parameter is no longer needed +// as the current DHT reading algorithm adjusts itself to work on faster procs. +DHT dht(DHTPIN, DHTTYPE); + +void setup() { + Serial.begin(9600); + Serial.println(F("DHTxx test!")); + + dht.begin(); +} + +void loop() { + // Wait a few seconds between measurements. + delay(2000); + + // Reading temperature or humidity takes about 250 milliseconds! + // Sensor readings may also be up to 2 seconds 'old' (its a very slow sensor) + float h = dht.readHumidity(); + // Read temperature as Celsius (the default) + float t = dht.readTemperature(); + // Read temperature as Fahrenheit (isFahrenheit = true) + float f = dht.readTemperature(true); + + // Check if any reads failed and exit early (to try again). + if (isnan(h) || isnan(t) || isnan(f)) { + Serial.println(F("Failed to read from DHT sensor!")); + return; + } + + // Compute heat index in Fahrenheit (the default) + float hif = dht.computeHeatIndex(f, h); + // Compute heat index in Celsius (isFahreheit = false) + float hic = dht.computeHeatIndex(t, h, false); + + Serial.print(F("Humidity: ")); + Serial.print(h); + Serial.print(F("% Temperature: ")); + Serial.print(t); + Serial.print(F("°C ")); + Serial.print(f); + Serial.print(F("°F Heat index: ")); + Serial.print(hic); + Serial.print(F("°C ")); + Serial.print(hif); + Serial.println(F("°F")); +} diff --git a/learning_examples/hellloworld_esp32/hellloworld_esp32.ino b/learning_examples/hellloworld_esp32/hellloworld_esp32.ino new file mode 100644 index 0000000..7623a57 --- /dev/null +++ b/learning_examples/hellloworld_esp32/hellloworld_esp32.ino @@ -0,0 +1,7 @@ +void setup() { + Serial.begin(9600); +} +void loop() { + Serial.println("Hello!"); + delay(1000); +}
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