X-dark/esp32-env-monitor
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switch to u8g2 over u8x8

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This commit is contained in:
Cedric Girard 2019-05-07 16:09:15 +02:00
parent e26b49c58f
commit 7e8227861b
Signed by: X-dark
GPG key ID: E7D0E125DB9519E4
1 changed files with 61 additions and 56 deletions
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111
esp32-env-monitor.ino
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@ -4,7 +4,7 @@
#include <WiFi.h> #include <WiFi.h>
#include "wifi_login.h" #include "wifi_login.h"
#include <U8x8lib.h> #include <U8g2lib.h>
#ifdef U8X8_HAVE_HW_SPI #ifdef U8X8_HAVE_HW_SPI
#include <SPI.h> #include <SPI.h>
@ -14,19 +14,22 @@
#include <Adafruit_SGP30.h> #include <Adafruit_SGP30.h>
U8X8_SSD1327_EA_W128128_4W_HW_SPI u8x8(/* cs=*/ 17, /* dc=*/ 3, /* reset=*/ 16); U8G2_SSD1327_WS_128X128_1_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 17, /* dc=*/ 3, /* reset=*/ 16);
BME280I2C bme; // Default : forced mode, standby time = 1000 ms BME280I2C bme; // Default : forced mode, standby time = 1000 ms
// Oversampling = pressure ×1, temperature ×1, humidity ×1, filter off, // Oversampling = pressure ×1, temperature ×1, humidity ×1, filter off,
Adafruit_SGP30 sgp; Adafruit_SGP30 sgp;
// setup the terminal (U8X8LOG) and connect to u8g2 for automatic refresh of the display // setup the terminal (U8G2LOG) and connect to u8g2 for automatic refresh of the display
// The size (width * height) depends on the display // The size (width * height) depends on the display
// u8g2_font_t0_15_mf: BBX Width 8, Height 15
// 128/8 = 16
#define U8LOG_WIDTH 16 #define U8LOG_WIDTH 16
#define U8LOG_HEIGHT 12 // 128/15 = 8
#define U8LOG_HEIGHT 8
uint8_t u8log_buffer[U8LOG_WIDTH*U8LOG_HEIGHT]; uint8_t u8log_buffer[U8LOG_WIDTH*U8LOG_HEIGHT];
U8X8LOG u8x8log; U8G2LOG u8g2log;
/* return absolute humidity [mg/m^3] with approximation formula /* return absolute humidity [mg/m^3] with approximation formula
* @param temperature [°C] * @param temperature [°C]
@ -42,67 +45,69 @@ uint32_t getAbsoluteHumidity(float temperature, float humidity) {
void setup() { void setup() {
//Init Display //Init Display
u8x8.begin(); u8g2.begin();
u8x8.setFont(u8x8_font_chroma48medium8_r); u8g2.setFont(u8g2_font_t0_15_mf);
u8g2.enableUTF8Print();
u8x8log.begin(u8x8, U8LOG_WIDTH, U8LOG_HEIGHT, u8log_buffer); u8g2log.begin(U8LOG_WIDTH, U8LOG_HEIGHT, u8log_buffer);
u8x8log.setRedrawMode(0); // 0: Update screen with newline, 1: Update screen for every char u8g2log.setLineHeightOffset(0); // set extra space between lines in pixel, this can be negative
u8g2log.setRedrawMode(0); // 0: Update screen with newline, 1: Update screen for every char
//Init wifi connection //Init wifi connection
WiFi.begin(ssid, password); WiFi.begin(ssid, password);
u8x8log.print("Connecting to SSID:\n"); u8g2log.print("Connecting to SSID:\n");
u8x8log.print(ssid); u8g2log.print(ssid);
u8x8log.print("\n"); u8g2log.print("\n");
u8x8log.print("\n"); u8g2log.print("\n");
while (WiFi.status() != WL_CONNECTED) { while (WiFi.status() != WL_CONNECTED) {
delay(500); delay(500);
u8x8log.print("."); u8g2log.print(".");
} }
u8x8log.print("\n"); u8g2log.print("\n");
u8x8log.print("WiFi connected\n"); u8g2log.print("WiFi connected\n");
u8x8log.print("IP address:\n"); u8g2log.print("IP address:\n");
u8x8log.println(WiFi.localIP()); u8g2log.println(WiFi.localIP());
u8x8log.print("\n"); u8g2log.print("\n");
u8x8log.print("\n"); u8g2log.print("\n");
//Init BME280 sensor //Init BME280 sensor
Wire.begin(); Wire.begin();
while(!bme.begin()) while(!bme.begin())
{ {
u8x8log.print("Could not find BME280 sensor!\n"); u8g2log.print("Could not find BME280 sensor!\n");
delay(1000); delay(1000);
} }
switch(bme.chipModel()) switch(bme.chipModel())
{ {
case BME280::ChipModel_BME280: case BME280::ChipModel_BME280:
u8x8log.print("Found BME280 sensor! Success.\n"); u8g2log.print("Found BME280 sensor! Success.\n");
break; break;
case BME280::ChipModel_BMP280: case BME280::ChipModel_BMP280:
u8x8log.print("Found BMP280 sensor! No Humidity available.\n"); u8g2log.print("Found BMP280 sensor! No Humidity available.\n");
break; break;
default: default:
u8x8log.print("Found UNKNOWN sensor! Error!\n"); u8g2log.print("Found UNKNOWN sensor! Error!\n");
} }
//Init SGP30 sensor //Init SGP30 sensor
while(!sgp.begin()) while(!sgp.begin())
{ {
u8x8log.print("Could not find SGP30 sensor!\n"); u8g2log.print("Could not find SGP30 sensor!\n");
delay(1000); delay(1000);
} }
u8x8log.print("Found SGP30 serial #"); u8g2log.print("Found SGP30 serial #");
u8x8log.print(sgp.serialnumber[0], HEX); u8g2log.print(sgp.serialnumber[0], HEX);
u8x8log.print(sgp.serialnumber[1], HEX); u8g2log.print(sgp.serialnumber[1], HEX);
u8x8log.print(sgp.serialnumber[2], HEX); u8g2log.print(sgp.serialnumber[2], HEX);
u8x8log.print("\n"); u8g2log.print("\n");
// If you have a baseline measurement from before you can assign it to start, to 'self-calibrate' // If you have a baseline measurement from before you can assign it to start, to 'self-calibrate'
//sgp.setIAQBaseline(0x8E68, 0x8F41); // Will vary for each sensor! //sgp.setIAQBaseline(0x8E68, 0x8F41); // Will vary for each sensor!
@ -114,7 +119,7 @@ int counter = 0;
void loop() { void loop() {
//Clear screen //Clear screen
u8x8log.print("\f"); u8g2log.print("\f");
//Read Temperature, humidity and pressure //Read Temperature, humidity and pressure
float temp(NAN), hum(NAN), pres(NAN); float temp(NAN), hum(NAN), pres(NAN);
@ -127,26 +132,26 @@ void loop() {
sgp.setHumidity(getAbsoluteHumidity(temp, hum)); sgp.setHumidity(getAbsoluteHumidity(temp, hum));
if (! sgp.IAQmeasure()) { if (! sgp.IAQmeasure()) {
u8x8log.print("Air Quality Measurement failed\n"); u8g2log.print("Air Quality Measurement failed\n");
return; return;
} }
u8x8log.print("Temp: "); u8g2log.print("Temp: ");
u8x8log.print(temp); u8g2log.print(temp);
u8x8log.print("°"+ String(tempUnit == BME280::TempUnit_Celsius ? 'C' :'F')); u8g2log.print("°"+ String(tempUnit == BME280::TempUnit_Celsius ? 'C' :'F'));
u8x8log.print("\nHumidity: "); u8g2log.print("\nHumidity: ");
u8x8log.print(hum); u8g2log.print(hum);
u8x8log.print("% RH"); u8g2log.print("% RH");
u8x8log.print("\nPressure: "); u8g2log.print("\nPressure: ");
u8x8log.print(pres); u8g2log.print(pres);
u8x8log.print("Pa\n"); u8g2log.print("Pa\n");
u8x8log.print("TVOC "); u8g2log.print("TVOC ");
u8x8log.print(sgp.TVOC); u8g2log.print(sgp.TVOC);
u8x8log.print(" ppb\n"); u8g2log.print(" ppb\n");
u8x8log.print("eCO2 "); u8g2log.print("eCO2 ");
u8x8log.print(sgp.eCO2); u8g2log.print(sgp.eCO2);
u8x8log.print(" ppm\n"); u8g2log.print(" ppm\n");
//Get Baseline readings every 30s //Get Baseline readings every 30s
counter++; counter++;
@ -155,14 +160,14 @@ void loop() {
uint16_t TVOC_base, eCO2_base; uint16_t TVOC_base, eCO2_base;
if (! sgp.getIAQBaseline(&eCO2_base, &TVOC_base)) { if (! sgp.getIAQBaseline(&eCO2_base, &TVOC_base)) {
u8x8log.print("Failed to get baseline readings\n"); u8g2log.print("Failed to get baseline readings\n");
return; return;
} }
u8x8log.print("Baseline values: eCO2: 0x"); u8g2log.print("Baseline values: eCO2: 0x");
u8x8log.print(eCO2_base, HEX); u8g2log.print(eCO2_base, HEX);
u8x8log.print(" & TVOC: 0x"); u8g2log.print(" & TVOC: 0x");
u8x8log.print(TVOC_base, HEX); u8g2log.print(TVOC_base, HEX);
u8x8log.print("\n"); u8g2log.print("\n");
} }
delay(1000); delay(1000);