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Add display functionality

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This commit is contained in:
Matti Airas 2021-04-04 15:06:38 +03:00
parent 19bd45d1ae
commit 1e14b95c49
1 changed files with 59 additions and 0 deletions
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59
src/main.cpp
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@ -1,4 +1,7 @@
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>
#include <Arduino.h>
#include <Wire.h>
#include "sensesp_app.h"
#include "sensesp_app_builder.h"
@ -8,6 +11,39 @@
// 1-Wire data pin on SH-ESP32
#define ONEWIRE_PIN 4
// SDA and SCL pins on SH-ESP32
#define SDA_PIN 16
#define SCL_PIN 17
// OLED display width and height, in pixels
#define SCREEN_WIDTH 128
#define SCREEN_HEIGHT 64
// define temperature display units
#define TEMP_DISPLAY_FUNC KelvinToCelsius
//#define TEMP_DISPLAY_FUNC KelvinToFahrenheit
TwoWire* i2c;
Adafruit_SSD1306* display;
/// Clear a text row on an Adafruit graphics display
void ClearRow(int row) { display->fillRect(0, 8 * row, SCREEN_WIDTH, 8, 0); }
float KelvinToCelsius(float temp) {
return temp - 273.15;
}
float KelvinToFahrenheit(float temp) {
return (temp - 273.15) * 9./5. + 32.;
}
void PrintTemperature(int row, String title, float temperature) {
ClearRow(row);
display->setCursor(0, 8 * row);
display->printf("%s: %.1f", title.c_str(), TEMP_DISPLAY_FUNC(temperature));
display->display();
}
ReactESP app([]() {
// Some initialization boilerplate when in debug mode...
#ifndef SERIAL_DEBUG_DISABLED
@ -43,6 +79,29 @@ ReactESP app([]() {
main_engine_exhaust_temperature->connectTo(new SKOutput<float>(
"propulsion.main.exhaustTemperature", "/mainEngineExhaustTemp/skPath"));
// initialize the display
i2c = new TwoWire(0);
i2c->begin(SDA_PIN, SCL_PIN);
display = new Adafruit_SSD1306(SCREEN_WIDTH, SCREEN_HEIGHT, i2c, -1);
if (!display->begin(SSD1306_SWITCHCAPVCC, 0x3C)) {
Serial.println(F("SSD1306 allocation failed"));
}
delay(100);
display->setRotation(2);
display->clearDisplay();
display->setTextSize(1);
display->setTextColor(SSD1306_WHITE);
display->setCursor(0, 0);
display->printf("Host: %s", sensesp_app->get_hostname().c_str());
display->display();
// Add display updaters for temperature values
main_engine_temperature->connect_to(new LambdaConsumer<float>(
[](float temperature) { PrintTemperature(1, "Engine", temperature); }));
main_engine_coolant_temperature->connect_to(new LambdaConsumer<float>(
[](float temperature) { PrintTemperature(2, "Coolant", temperature); }));
main_engine_exhaust_temperature->connect_to(new LambdaConsumer<float>(
[](float temperature) { PrintTemperature(3, "Exhaust", temperature); }));
sensesp_app->enable();
});