mirror of
https://github.com/enjoyneering/AHT10.git
synced 2024-09-19 16:46:12 -04:00
131 lines
5.2 KiB
C++
131 lines
5.2 KiB
C++
/***************************************************************************************************/
|
|
/*
|
|
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 <Wire.h> //use bug free i2c driver https://github.com/enjoyneering/ESP8266-I2C-Driver
|
|
#include <AHT10.h>
|
|
#include <LiquidCrystal_I2C.h> //https://github.com/enjoyneering/LiquidCrystal_I2C
|
|
#include <ESP8266WiFi.h>
|
|
|
|
|
|
#define LCD_ROWS 4 //qnt. of LCD rows
|
|
#define LCD_COLUMNS 20 //qnt. of LCD columns
|
|
#define DEGREE_SYMBOL 0xDF //degree symbol from LCD ROM
|
|
|
|
|
|
float valueTH = 0;
|
|
|
|
const uint8_t temperature_icon[8] PROGMEM = {0x04, 0x0A, 0x0A, 0x0A, 0x0A, 0x1F, 0x1F, 0x0E}; //PROGMEM saves variable to flash & keeps dynamic memory free
|
|
const uint8_t humidity_icon[8] PROGMEM = {0x04, 0x0E, 0x0E, 0x1F, 0x1F, 0x1F, 0x0E, 0x00};
|
|
const uint8_t plus_minus_icon[8] PROGMEM = {0x00, 0x04, 0x0E, 0x04, 0x00, 0x0E, 0x00, 0x00};
|
|
|
|
AHT10 myAHT10();
|
|
LiquidCrystal_I2C lcd(PCF8574_ADDR_A21_A11_A01, 4, 5, 6, 16, 11, 12, 13, 14, POSITIVE);
|
|
|
|
|
|
void setup()
|
|
{
|
|
WiFi.persistent(false); //disable saving wifi config into SDK flash area
|
|
WiFi.forceSleepBegin(); //disable AP & station by calling "WiFi.mode(WIFI_OFF)" & put modem to sleep
|
|
|
|
Serial.begin(115200);
|
|
|
|
/* LCD connection check */
|
|
while (lcd.begin(LCD_COLUMNS, LCD_ROWS, LCD_5x8DOTS, SDA, SCL) != true) //20 colums, 4 rows, 5x8 pixels char size
|
|
{
|
|
Serial.println(F("PCF8574 is not connected or lcd pins declaration is wrong. Only pins numbers: 4,5,6,16,11,12,13,14 are legal."));
|
|
delay(5000);
|
|
}
|
|
|
|
lcd.print(F("PCF8574 is OK")); //(F()) saves string to flash & keeps dynamic memory free
|
|
delay(1000);
|
|
|
|
lcd.clear();
|
|
|
|
/* AHT10 connection check */
|
|
while (myAHT10.begin(SDA, SCL) != true)
|
|
{
|
|
lcd.print(F("AHT10 Error"));
|
|
Serial.println(F("AHT10 not connected or fail to load calibration coefficient"));
|
|
delay(5000);
|
|
}
|
|
|
|
//Wire.setClock(400000); //experimental I2C speed! 400KHz, default 100KHz
|
|
//Wire.setClockStretchLimit(10000); //experimental I2C clock stretch intervals!, default 230usec
|
|
|
|
lcd.clear();
|
|
|
|
lcd.print(F("AHT10 OK"));
|
|
delay(2000);
|
|
|
|
lcd.clear();
|
|
|
|
/* load custom symbol to CGRAM */
|
|
lcd.createChar(0, temperature_icon);
|
|
lcd.createChar(1, humidity_icon);
|
|
lcd.createChar(2, plus_minus_icon);
|
|
|
|
/* prints static text */
|
|
lcd.setCursor(0, 0); //set 1-st colum & 1-st row
|
|
lcd.write(0); //print custom tempereture symbol from CGRAM
|
|
|
|
lcd.setCursor(0, 1);
|
|
lcd.write(1);
|
|
}
|
|
|
|
void loop()
|
|
{
|
|
/* prints dynamic temperature data */
|
|
lcd.setCursor(1, 0);
|
|
|
|
valueTH = myAHT10.readTemperature(AHT10_FORCE_READ_DATA); //read 6-bytes over I2C
|
|
|
|
if (valueTH != AHT10_ERROR) lcd.print(valueTH);
|
|
else lcd.print(F("xxx"));
|
|
|
|
lcd.write(2); //print custom plus/minus symbol
|
|
lcd.print(F("0.3"));
|
|
lcd.write(DEGREE_SYMBOL); //print degree symbol from the LCD ROM
|
|
lcd.print(F("C "));
|
|
|
|
/* prints dynamic humidity data */
|
|
lcd.setCursor(1, 1);
|
|
|
|
valueTH = myAHT10.readHumidity(AHT10_USE_READ_DATA); //use same 6-bytes
|
|
|
|
if (valueTH != AHT10_ERROR) lcd.print(valueTH);
|
|
else lcd.print(F("xxx"));
|
|
|
|
lcd.write(2);
|
|
lcd.print(F("2% "));
|
|
|
|
delay(10000); //recomended polling frequency 8sec..30sec
|
|
}
|