mirror of https://github.com/revspace/operame
Support both AQC and MH-Z19B
This commit is contained in:
Juerd Waalboer
parent
6f4ac2b01b
commit
420868585d
195
operame.ino
195
operame.ino
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@ -3,7 +3,7 @@
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#include <MQTT.h>
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#include <SPIFFS.h>
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#include <WiFiSettings.h>
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//#include <MHZ19.h>
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#include <MHZ19.h>
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#include <ArduinoOTA.h>
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#include <SPI.h>
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#include <TFT_eSPI.h>
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@ -20,13 +20,16 @@ int co2_warning;
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int co2_critical;
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int co2_blink;
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int co2_init = 410; // magic value reported while initializing
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enum Driver { AQC, MHZ };
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Driver driver;
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int mhz_co2_init = 410; // magic value reported while initializing
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MQTTClient mqtt;
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HardwareSerial hwserial1(1);
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TFT_eSPI display;
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TFT_eSprite sprite(&display);
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//MHZ19 mhz;
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MHZ19 mhz;
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String mqtt_topic;
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String mqtt_template;
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bool add_units;
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@ -154,68 +157,19 @@ void setup() {
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hwserial1.begin(9600, SERIAL_8N1, 27, 26);
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/*
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// senseair?
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// hwserial1.print("\xfe\x41\0\x80\x01\x10\x28\x7e");
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// delay(1000);
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// hwserial1.print("\xfe\x44\0\0\x08\x20\x79\x3c");
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// nope
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// HCC-ding?
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hwserial1.print("\x5c\x01\xc5\0\0\0\0\0\xDD");
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// nope
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// zelfde protocol maar dan anders?
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uint8_t p[9];
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p[1] = 0x01;
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p[2] = 0xc5;
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while (1) {
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for (int i = 255; i < 256; i++) {
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p[0] = i;
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int sum = 0;
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for (int c = 0; c < 8; c++) {
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Serial.print(p[c], HEX);
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Serial.print(" ");
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sum += p[c];
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}
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p[8] = 255 - (sum % 256);
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Serial.println(p[8], HEX);
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hwserial1.write(p, 9);
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delay(50);
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if (hwserial1.available()) {
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Serial.println("JAAAAAAAAAAAAAAAAAAAA");
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while (hwserial1.available()) {
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int c = hwserial1.read();
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if (c != -1) Serial.println(c, HEX);
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}
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}
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delay(1000);
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if (aqc_get_co2() >= 0) {
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driver = AQC;
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hwserial1.setTimeout(100);
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Serial.println("Using AQC driver.");
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} else {
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driver = MHZ;
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mhz_setup();
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Serial.println("Using MHZ driver.");
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}
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}
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while (1) {
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int c = hwserial1.read();
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if (c != -1) Serial.println(c, HEX);
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}
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*/
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//mhz.begin(hwserial1);
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display_logo();
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delay(2000);
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//check_sensor();
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//// mhz.setFilter(true, true); Library filter doesn't handle 0436
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//mhz.autoCalibration(true);
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//char v[5];
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//mhz.getVersion(v);
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//v[4] = '\0';
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//if (strcmp("0436", v) == 0) co2_init = 436;
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//Serial.printf("MH-Z19 firmware version %s\n", v);
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WiFiSettings.hostname = "operame-";
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wifi_enabled = WiFiSettings.checkbox("operame_wifi", false, "WiFi-verbinding gebruiken");
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ota_enabled = WiFiSettings.checkbox("operame_ota", false, "Draadloos herprogrammeren inschakelen. (Gebruikt portaalwachtwoord!)") && wifi_enabled;
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@ -276,35 +230,83 @@ void connect_mqtt() {
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}
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}
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void check_sensor() {
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/*
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if (mhz.errorCode == RESULT_OK) return;
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while (1) {
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delay(1000);
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mhz.verify();
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if (mhz.errorCode == RESULT_OK) return;
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display_big("sensorfout", TFT_RED);
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int aqc_get_co2() {
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static bool initialized = false;
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const uint8_t command[9] = { 0xff, 0x01, 0xc5, 0, 0, 0, 0, 0, 0x3a };
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char response[9];
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int CO2 = -1;
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for (int attempt = 0; attempt < 3; attempt++) {
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hwserial1.flush();
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int limit = 20; // .available() sometimes stays true
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while(hwserial1.available() && --limit) hwserial1.read();
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hwserial1.write(command, sizeof(command));
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delay(50);
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int c = hwserial1.readBytes(response, sizeof(response));
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if (c != sizeof(response)) {
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continue;
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}
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uint8_t checksum = 255;
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for (int i = 0; i < sizeof(response) - 1; i++) {
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Serial.printf("%02x %d\n", response[i], response[i]);
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checksum -= response[i];
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}
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if (response[8] == checksum) {
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CO2 = response[2] * 256 + response[3];
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break;
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}
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delay(50);
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}
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*/
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if (CO2 < 0) {
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initialized = false;
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return CO2;
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}
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if (!initialized && (CO2 == 9999 || CO2 == 400)) return 0;
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initialized = true;
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return CO2;
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}
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void mhz_setup() {
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mhz.begin(hwserial1);
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// mhz.setFilter(true, true); Library filter doesn't handle 0436
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mhz.autoCalibration(true);
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char v[5];
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mhz.getVersion(v);
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v[4] = '\0';
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if (strcmp("0436", v) == 0) mhz_co2_init = 436;
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}
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int mhz_get_co2() {
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int CO2 = mhz.getCO2();
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int unclamped = mhz.getCO2(false);
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if (mhz.errorCode != RESULT_OK) {
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delay(500);
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mhz_setup();
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return -1;
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}
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// reimplement filter from library, but also checking for 436 because our
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// sensors (firmware 0436, coincidence?) return that instead of 410...
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if (unclamped == mhz_co2_init && CO2 - unclamped >= 10) return 0;
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// No known sensors support >10k PPM (library filter tests for >32767)
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if (CO2 > 10000 || unclamped > 10000) return 0;
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return CO2;
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}
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int get_co2() {
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const uint8_t command[9] = { 0xff, 0x01, 0xc5, 0, 0, 0, 0, 0, 0x3a };
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hwserial1.write(command, sizeof(command));
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delay(50);
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char response[9];
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if (hwserial1.available()) {
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while (hwserial1.available()) {
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int c = hwserial1.readBytes(response, sizeof(response));
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if (c != sizeof(response)) return 0;
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}
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}
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uint8_t checksum = 255;
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for (int i = 0; i < sizeof(response) - 1; i++) {
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checksum -= response[i];
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}
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if (response[8] != checksum) return 0;
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return response[2] * 256 + response[3];
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if (driver == AQC) return aqc_get_co2();
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if (driver == MHZ) return mhz_get_co2();
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// Should be unreachable
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ESP.restart();
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return -1; // suppress warning
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}
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void loop() {
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@ -313,16 +315,16 @@ void loop() {
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if (mqtt_enabled) mqtt.loop();
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int CO2 = get_co2();
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int CO2 = get_co2();
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// No known sensors support >10k PPM (library filter tests for >32767)
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// if (CO2 > 10000 || unclamped > 10000) CO2 = 0;
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// check_sensor();
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Serial.println(CO2);
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if (CO2) {
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if (CO2 < 0) {
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display_big("sensorfout", TFT_RED);
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}
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else if (CO2 == 0) {
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display_big("wacht...");
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}
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else {
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Serial.println(CO2);
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// some MH-Z19's go to 10000 but the display has space for 4 digits
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if (CO2 > 9999) CO2 = 9999;
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@ -335,15 +337,12 @@ void loop() {
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message.replace("{}", String(CO2));
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retain(mqtt_topic, message);
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}
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} else {
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display_big("wacht...");
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}
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while (millis() - start < 6000) {
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if (CO2) display_ppm(CO2); // repeat, for blinking
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if (CO2 > 0) display_ppm(CO2); // repeat, for blinking
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if (ota_enabled) ArduinoOTA.handle();
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check_buttons();
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delay(20);
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}
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Serial.println(esp_get_free_heap_size());
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}
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