Code
// www.ekostra.com /***************************************************************************************************/ /* This is an Arduino library for Aosong ASAIR AHT10, AHT15 Digital Humidity & Temperature Sensor written by : enjoyneering79 sourse code: https://github.com/enjoyneering/ This chip uses I2C bus to communicate, specials pins are required to interface Board: SDA SCL Level Uno, Mini, Pro, ATmega168, ATmega328..... A4 A5 5v Mega2560................................. 20 21 5v Due, SAM3X8E............................. 20 21 3.3v Leonardo, Micro, ATmega32U4.............. 2 3 5v Digistump, Trinket, ATtiny85............. 0/physical pin no.5 2/physical pin no.7 5v Blue Pill, STM32F103xxxx boards.......... PB7 PB6 3.3v/5v ESP8266 ESP-01........................... GPIO0/D5 GPIO2/D3 3.3v/5v NodeMCU 1.0, WeMos D1 Mini............... GPIO4/D2 GPIO5/D1 3.3v/5v ESP32.................................... GPIO21/D21 GPIO22/D22 3.3v Frameworks & Libraries: ATtiny Core - https://github.com/SpenceKonde/ATTinyCore ESP32 Core - https://github.com/espressif/arduino-esp32 ESP8266 Core - https://github.com/esp8266/Arduino STM32 Core - https://github.com/stm32duino/Arduino_Core_STM32 - https://github.com/rogerclarkmelbourne/Arduino_STM32 GNU GPL license, all text above must be included in any redistribution, see link for details - https://www.gnu.org/licenses/licenses.html */ /***************************************************************************************************/ #include <AHT10.h> #include <Wire.h> uint8_t readStatus = 0; AHT10 myAHT10(AHT10_ADDRESS_0X38); void setup() { Serial.begin(115200); Serial.println(); while (myAHT10.begin() != true) { Serial.println(F("AHT10 not connected or fail to load calibration coefficient")); //(F()) save string to flash & keeps dynamic memory free delay(5000); } Serial.println(F("AHT10 OK")); //Wire.setClock(400000); //experimental I2C speed! 400KHz, default 100KHz } void loop() { /* DEMO - 1, every temperature or humidity call will read 6 bytes over I2C, total 12 bytes */ Serial.println(F("DEMO 1: read 12-bytes, show 255 if communication error is occurred")); Serial.print(F("Temperature: ")); Serial.print(myAHT10.readTemperature()); Serial.println(F(" +-0.3C")); //by default "AHT10_FORCE_READ_DATA" Serial.print(F("Humidity...: ")); Serial.print(myAHT10.readHumidity()); Serial.println(F(" +-2%")); //by default "AHT10_FORCE_READ_DATA" /* DEMO - 2, temperature call will read 6 bytes via I2C, humidity will use same 6 bytes */ Serial.println(F("DEMO 2: read 6 byte, show 255 if communication error is occurred")); Serial.print(F("Temperature: ")); Serial.print(myAHT10.readTemperature(AHT10_FORCE_READ_DATA)); Serial.println(F(" +-0.3C")); Serial.print(F("Humidity...: ")); Serial.print(myAHT10.readHumidity(AHT10_USE_READ_DATA)); Serial.println(F(" +-2%")); /* DEMO - 3, same as demo2 but different call procedure */ Serial.println(F("DEMO 3: read 6-bytes, show 255 if communication error is occurred")); readStatus = myAHT10.readRawData(); //read 6 bytes from AHT10 over I2C if (readStatus != AHT10_ERROR) { Serial.print(F("Temperature: ")); Serial.print(myAHT10.readTemperature(AHT10_USE_READ_DATA)); Serial.println(F(" +-0.3C")); Serial.print(F("Humidity...: ")); Serial.print(myAHT10.readHumidity(AHT10_USE_READ_DATA)); Serial.println(F(" +-2%")); } else { Serial.print(F("Failed to read - reset: ")); Serial.println(myAHT10.softReset()); //reset 1-success, 0-failed } delay(10000); //recomended polling frequency 8sec..30sec }