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Temperature.ino
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Temperature.ino
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/*
* MIT License
*
* Copyright (c) 2020 Erriez
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
/* JY-LKM1638 board v1.1 temperature example
*
* Required libraries:
* https://github.com/Erriez/ErriezTM1638
* https://github.com/Erriez/ErriezLKM1638
*/
#include <ErriezLKM1638Board.h>
// Connect display pins to the Arduino DIGITAL pins
#if ARDUINO_ARCH_AVR
#define TM1638_CLK_PIN 2
#define TM1638_DIO_PIN 3
#define TM1638_STB0_PIN 4
#elif ARDUINO_ARCH_ESP8266
#define TM1638_CLK_PIN D2
#define TM1638_DIO_PIN D3
#define TM1638_STB0_PIN D4
#elif ARDUINO_ARCH_ESP32
#define TM1638_CLK_PIN 0
#define TM1638_DIO_PIN 4
#define TM1638_STB0_PIN 5
#else
#error "May work, but not tested on this target"
#endif
// Create LKM1638Board object
LKM1638Board lkm1638(TM1638_CLK_PIN, TM1638_DIO_PIN, TM1638_STB0_PIN);
// Forward function declaration
static int getTemperature();
void setup()
{
Serial.begin(115200);
while (!Serial) {
;
}
Serial.println(F("JY-LKM1638 temperature example"));
Serial.println(F("Simulating temperature..."));
// Initialize TM1638
lkm1638.begin();
lkm1638.clear();
}
void loop()
{
int temperature;
int8_t value;
uint8_t remainder;
// Get random temperature
temperature = getTemperature();
// Calculate signed temperature
value = temperature / 10;
// Calculate unsigned remainder temperature (1 digit)
if (temperature < 0) {
remainder = (uint8_t)(temperature * -1) % 10;
} else {
remainder = (uint8_t)temperature % 10;
}
lkm1638.setPrintPos(3);
lkm1638.print(value, DEC);
lkm1638.setPrintPos(2);
lkm1638.print(remainder, DEC, 1);
lkm1638.dotOn(3);
lkm1638.setSegmentsDigit(1, SEGMENTS_DEGREE);
lkm1638.setSegmentsDigit(0, SEGMENTS_C);
// Print temperature on serial console
Serial.print(value);
Serial.print(F("."));
Serial.print(remainder);
Serial.println(F("`C"));
delay(2000);
}
static int getTemperature()
{
// Return a random temperature between -25.0 and 100.0 degree Celsius
return (int)random(-250, 1000);
}