#include <Arduino.h>
#include <SensirionI2CScd4x.h>
#include <sps30.h>
#include <Wire.h>
#define LILYGO_T5_V213
#include <boards.h>
#include <GxEPD.h>
#include <GxGDEH0213B73/GxGDEH0213B73.h>
#include <Fonts/FreeMonoBold9pt7b.h>
#include <GxIO/GxIO_SPI/GxIO_SPI.h>
#include <GxIO/GxIO.h>
GxIO_Class io(SPI, EPD_CS, EPD_DC, EPD_RSET);
GxEPD_Class display(io, EPD_RSET, EPD_BUSY);
SPIClass SDSPI(VSPI);
SensirionI2CScd4x scd4x;
uint16_t co2 = 0;
float temperature = 0.0f;
float humidity = 0.0f;
struct sps30_measurement m;
void showThings(bool all=false) {
display.fillScreen(GxEPD_WHITE);
display.setCursor(0,20);
display.print("Co2:");
display.println(co2);
display.print("T:");
display.print(temperature);
display.print(" H:");
display.println(humidity);
display.print("PM 1:");
display.print(m.mc_1p0);
display.print(" PM 2.5:");
display.println(m.mc_2p5);
display.print("PM 4:");
display.print(m.mc_4p0);
display.print(" PM 10:");
display.println(m.mc_10p0);
display.updateWindow(0, 0, GxEPD_WIDTH, GxEPD_HEIGHT, false);
}
void setup() {
Serial.begin(115200);
while (!Serial) {
delay(100);
}
Wire.begin(21,22);
SPI.begin(EPD_SCLK, EPD_MISO, EPD_MOSI);
display.init();
display.setTextColor(GxEPD_BLACK);
display.setRotation(3);
display.setFont(&FreeMonoBold9pt7b);
showThings();
uint16_t error;
char errorMessage[256];
scd4x.begin(Wire);
error = scd4x.stopPeriodicMeasurement();
if (error) {
Serial.print("Error trying to execute stopPeriodicMeasurement(): ");
errorToString(error, errorMessage, 256);
Serial.println(errorMessage);
}
error = scd4x.setAutomaticSelfCalibration(1);
if (error) {
Serial.print("Error trying to execute setAutomaticSelfCalibration(): ");
errorToString(error, errorMessage, 256);
Serial.println(errorMessage);
}
error = scd4x.startPeriodicMeasurement();
if (error) {
Serial.print("Error trying to execute startPeriodicMeasurement(): ");
errorToString(error, errorMessage, 256);
Serial.println(errorMessage);
}
sensirion_i2c_init();
while (sps30_probe() != 0) {
Serial.print("SPS sensor probing failed\n");
delay(500);
}
int16_t ret;
uint8_t auto_clean_days = 4;
uint32_t auto_clean;
ret = sps30_set_fan_auto_cleaning_interval_days(auto_clean_days);
if (ret) {
Serial.print("error setting the auto-clean interval: ");
Serial.println(ret);
}
ret = sps30_start_measurement();
if (ret < 0) {
Serial.print("error starting measurement\n");
}
Serial.println("Waiting for first measurement... (5 sec)");
}
void loop() {
uint16_t error;
char errorMessage[256];
delay(5000);
error = scd4x.readMeasurement(co2, temperature, humidity);
char serial[SPS30_MAX_SERIAL_LEN];
uint16_t data_ready;
int16_t ret;
do {
ret = sps30_read_data_ready(&data_ready);
if (ret < 0) {
Serial.print("error reading data-ready flag: ");
Serial.println(ret);
} else if (!data_ready)
Serial.print("data not ready, no new measurement available\n");
else
break;
delay(100);
} while (1);
ret = sps30_read_measurement(&m);
if (error || ret <0 || co2 ==0) {
return;
}
showThings();
}