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esp32-weatherstation
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graphics

ir
Hendrik Langer 5 years ago
parent
82d038cedc
commit
07f8d2b923
1 changed files with 140 additions and 49 deletions
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  1. 189
      src/main.cpp

189
src/main.cpp
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@ -14,6 +14,7 @@
#include <GxEPD2_BW.h>
#include <Fonts/FreeMonoBold9pt7b.h>
#include <Fonts/FreeSans9pt7b.h>
#include <Fonts/FreeSansBold9pt7b.h>
#include <Fonts/Org_01.h>
#include "bitmaps/Bitmaps128x250.h"
#include <Adafruit_GFX.h>
@ -49,7 +50,7 @@ Adafruit_VEML6075 uv = Adafruit_VEML6075();
XD0OTA ota("esp32-weatherstation");
XD0MQTT mqtt;
struct __attribute__((packed)) {
struct __attribute__((packed)) sensor_readings_t {
float temperature = 0.0; // °C
float humidity = 0.0; // %H
float pressure = 0.0; // Pa
@ -59,8 +60,12 @@ struct __attribute__((packed)) {
float uvi = 0.0;
float uva = 0.0;
float uvb = 0.0;
float temperature_max = NAN; // °C
float temperature_min = NAN; // °C
} sensor_readings;
sensor_readings_t sensors_a4cf1211c3e4, sensors_246f28d1fa5c, sensors_246f28d1a080, sensors_30aea47b0568;
uint32_t lastDisplayUpdate = 0;
bool bme280_active = false;
bool bme680_active = false;
@ -134,6 +139,15 @@ void getSensorMeasurements() {
}
}
if (sensor_readings.temperature > sensor_readings.temperature_max
|| isnan(sensor_readings.temperature_max)) {
sensor_readings.temperature_max = sensor_readings.temperature;
}
if (sensor_readings.temperature < sensor_readings.temperature_min
|| isnan(sensor_readings.temperature_min)) {
sensor_readings.temperature_min = sensor_readings.temperature;
}
if (uv_active) {
sensor_readings.uvi = uv.readUVI();
sensor_readings.uva = uv.readUVA();
@ -150,6 +164,125 @@ void getSensorMeasurements() {
}
void receiveMqtt(const char* topic, const char* data) {
sensor_readings_t* sensor = NULL;
if (strstr(topic, "thomas/sensor/a4cf1211c3e4") == topic) {
sensor = &sensors_a4cf1211c3e4;
} else if (strstr(topic, "thomas/sensor/246f28d1fa5c") == topic) {
sensor = &sensors_246f28d1fa5c;
} else if (strstr(topic, "thomas/sensor/246f28d1a080") == topic) {
sensor = &sensors_246f28d1a080;
} else if (strstr(topic, "thomas/sensor/30aea47b0568") == topic) {
sensor = &sensors_30aea47b0568;
}
char* topic_last = strrchr(topic, '/');
if (topic_last && sensor) {
if (strcmp("/temperature", topic_last) == 0) {
sensor->temperature = atof(data);
} else if (strcmp("/humidity", topic_last) == 0) {
sensor->humidity = atof(data);
} else if (strcmp("/pressure", topic_last) == 0) {
sensor->pressure = atof(data);
}
}
}
void displayValues() {
static constexpr uint8_t y_offset = 8;
display.setRotation(1);
display.setFont(NULL);
display.setTextColor(GxEPD_BLACK);
display.setTextSize(1);
display.setTextWrap(false);
char timeStr[40];
getTime(timeStr, sizeof(timeStr), "%d. %b %Y %H:%M:%S");
display.setFullWindow();
display.firstPage();
do
{
display.fillScreen(GxEPD_WHITE);
// Title
display.setCursor(30,y_offset+0);
display.println(timeStr);
display.drawLine(0,y_offset+10,display.width(), y_offset+10, GxEPD_BLACK);
// Temp
display.drawRect(0,y_offset+10,66,50,GxEPD_BLACK);
display.setFont(NULL);
display.setCursor(5,y_offset+15);
display.printf("max: %.1f", sensor_readings.temperature_max);
display.setFont(&FreeSansBold9pt7b);
display.setCursor(5,y_offset+40);
display.printf("%.1f*C", sensor_readings.temperature);
display.setFont(NULL);
display.setCursor(5,y_offset+45);
display.printf("min: %.1f", sensor_readings.temperature_min);
// Humidity
display.drawRect(65,y_offset+10,66,50,GxEPD_BLACK);
display.setFont(NULL);
display.setCursor(70,y_offset+15);
display.print("Humidity");
display.setFont(&FreeSansBold9pt7b);
display.setCursor(70,y_offset+40);
display.printf("%.1f %", sensor_readings.humidity);
// Pressure
display.drawRect(130,y_offset+10,66,50,GxEPD_BLACK);
display.setFont(NULL);
display.setCursor(135,y_offset+15);
display.print("Pressure");
display.setFont(&FreeSansBold9pt7b);
display.setCursor(135,y_offset+40);
display.printf("%.1f\%", sensor_readings.pressure / 100.0F);
// Other
display.drawRect(195,y_offset+10,56,122-10,GxEPD_BLACK);
display.setFont(NULL);
// VOC
display.setCursor(200,y_offset+15);
display.println("VOC:");
display.setCursor(200,y_offset+25);
display.printf("%.1f %", sensor_readings.voc);
// PM
display.setCursor(200,y_offset+45);
display.println("PM10 / 2.5:");
display.setCursor(200,y_offset+55);
display.printf("%.1f %", sensor_readings.pm10);
display.setCursor(200,y_offset+65);
display.printf("%.1f %", sensor_readings.pm25);
// UV
display.setCursor(200,y_offset+85);
display.println("UV Index/A/B:");
display.setCursor(200,y_offset+95);
display.printf("%.1f %", sensor_readings.uvi);
display.setCursor(200,y_offset+105);
display.printf("%.1f %", sensor_readings.uva);
display.setCursor(200,y_offset+115);
display.printf("%.1f %", sensor_readings.uvb);
// other nodes
display.setFont(NULL);
display.setCursor(0, y_offset+70);
display.printf("246f28d1fa5c: %4.1f %4.1f %6.1f\n", sensors_246f28d1fa5c.temperature, sensors_246f28d1fa5c.humidity, sensors_246f28d1fa5c.pressure);
display.printf("a4cf1211c3e4: %4.1f %4.1f %6.1f\n", sensors_a4cf1211c3e4.temperature, sensors_a4cf1211c3e4.humidity, sensors_a4cf1211c3e4.pressure);
display.printf("246f28d1a080: %4.1f %4.1f %6.1f\n", sensors_246f28d1a080.temperature, sensors_246f28d1a080.humidity, sensors_246f28d1a080.pressure);
display.printf("30aea47b0568: %4.1f %4.1f %6.1f\n", sensors_30aea47b0568.temperature, sensors_30aea47b0568.humidity, sensors_30aea47b0568.pressure);
}
while (display.nextPage());
display.powerOff();
}
void printValues() {
if (bme280_active || bme680_active) {
#define SEALEVELPRESSURE_HPA (1013.25)
@ -332,6 +465,11 @@ void setup()
ESP_LOGD(TAG, "connecting to MQTT");
mqtt.begin();
mqtt.subscribe("thomas/sensor/a4cf1211c3e4/#", receiveMqtt);
mqtt.subscribe("thomas/sensor/246f28d1fa5c/#", receiveMqtt);
mqtt.subscribe("thomas/sensor/246f28d1a080/#", receiveMqtt);
mqtt.subscribe("thomas/sensor/30aea47b0568/#", receiveMqtt);
ESP_LOGD(TAG, "setup done");
}
@ -340,60 +478,13 @@ void setup()
*/
void loop()
{
ESP_LOGD(TAG, "loop()");
/* Do an e-paper display refresh every 2 minutes */
if (millis() - lastDisplayUpdate >= 1*60*1000) {
lastDisplayUpdate = millis();
getSensorMeasurements();
display.setFullWindow();
display.setRotation(1);
display.firstPage();
do
{
display.fillScreen(GxEPD_WHITE);
display.setTextColor(GxEPD_BLACK);
display.setTextWrap(false);
display.setCursor(0, 11);
display.setFont(&FreeSans9pt7b);
display.println("ESP32-Wetterstation");
display.drawFastHLine(0, 14, display.width(), GxEPD_BLACK);
//display.setFont(NULL);
display.setCursor(0, 32);
if (bme280_active || bme680_active) {
display.print("Temperatur: ");
display.print(sensor_readings.temperature);
display.println(" *C");
display.print("Luftfeuchte: ");
display.print(sensor_readings.humidity);
display.println(" %");
display.print("Luftdruck:");
display.print(sensor_readings.pressure / 100.0F);
display.println(" hPa");
}
if (bme680_active) {
display.print("Gas: ");
display.print(sensor_readings.voc / 1000.0);
display.println(" KOhms");
}
if (!bme280_active && !bme680_active) {
display.print("Temperatur: ");
float esp32_temperature = (temprature_sens_read() - 32) / 1.8;
display.println(esp32_temperature-29.40);
display.println("kein BME Sensor");
}
char timeStr[9];
getTime(timeStr, sizeof(timeStr), "%H:%M:%S");
display.setCursor(5, display.height()-5);
display.setFont(&Org_01);
display.print("Zeit: ");
display.println(timeStr);
}
while (display.nextPage());
display.powerOff();
displayValues();
printValues();
sendValues();

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