diff options
| -rw-r--r-- | prog/tehtnica/tehtnica.ino | 232 |
1 files changed, 232 insertions, 0 deletions
diff --git a/prog/tehtnica/tehtnica.ino b/prog/tehtnica/tehtnica.ino new file mode 100644 index 0000000..15af6a2 --- /dev/null +++ b/prog/tehtnica/tehtnica.ino @@ -0,0 +1,232 @@ +#include <SPI.h> +#include <Wire.h> +#include <Adafruit_GFX.h> +#include <Adafruit_SSD1306.h> +#include <EEPROM.h> +#include <ESP8266WiFi.h> +#include <ESP8266mDNS.h> +#include <WiFiUdp.h> +#include <ArduinoOTA.h> +#include <LittleFS.h> +#include <SimpleFTPServer.h> +#include "HX711.h" +HX711 scale; +unsigned long wake = 0; +long wake_mass = 0; +#define WAKE_MASS 10 +#define TIMEOUT 30e3 // go to sleep after 30 seconds +#define POWER_DEVICES 14 +#define HX711_CLOCK 12 +#define HX711_DATA 13 +#define SCL 5 +#define SDA 4 +#define GUMB_CAL 0 +#define DELAY 3e3 +Adafruit_SSD1306 display(128, 32, &Wire, -1); +FtpServer ftpSrv; +int stanje = 0; +#define GLAVNO 0 +#define CENA 1 +#define KALIBRACIJA 2 +#define WIFI 3 +#define DOLŽINA 4 +unsigned long nazadnje_gumb = 0; +bool gumb = false; +void ICACHE_RAM_ATTR isr() { + if (millis() - nazadnje_gumb > 100) { + nazadnje_gumb = millis(); + gumb = true; + } +} +String readFile(const char * path) { + String r; + File file = LittleFS.open(path, "r"); + if (!file) + return ""; + while (file.available()) + r += (char) file.read(); + file.close(); + Serial.println(String("readFile(\"") + path + "\") = \"" + r + "\""); + return r; +} +bool writeFile (const char * path, String data) { + File file = LittleFS.open(path, "w"); + if (!file) + return false; + bool r = false; + if (file.print(data)) + r = true; + file.close(); + Serial.println(String("writeFile(\"") + path + "\", \"" + data + "\")"); + return r; +} +void render (int siz, String text) { + display.clearDisplay(); + display.cp437(true); + display.setTextSize(siz); + display.setTextColor(SSD1306_WHITE); + display.setCursor(0, 0); + display.print(text); + display.display(); +} +void wifi_update () { + if (readFile("wifi").toInt()) { + WiFi.mode(WIFI_AP_STA); + WiFi.begin(readFile("wifi_ssid"), readFile("wifi_password")); + WiFi.softAP(readFile("ap_ssid"), readFile("ap_password")); + } else + WiFi.mode(WIFI_OFF); + Serial.println("wifi_update();"); +} +float cena = 0; +void setup() { + pinMode(GUMB_CAL, INPUT); + attachInterrupt(GUMB_CAL, isr, RISING); + pinMode(POWER_DEVICES, OUTPUT); + digitalWrite(POWER_DEVICES, HIGH); + Wire.begin(SDA, SCL); + Serial.begin(115200); + if (!display.begin(SSD1306_SWITCHCAPVCC, 0x3C)) { + Serial.println("SSD1306 allocation failed"); + for (;;); + } + ArduinoOTA.onStart([]() { + render(1, "Posodabljanje \n" + "programske opreme \n" + "se bo izvedlo v \n" + "kratkem. "); + }); + ArduinoOTA.onEnd([]() { + render(1, "Prenos posodobitve \n" + "uspel. Sedaj kopiram \n" + "posodobitev v shrambo\n" + "za zagon. Ne izklopi!"); + }); + ArduinoOTA.onProgress([](unsigned int progress, unsigned int total) { + render(1, String("Posodabljam ... \n") + "Potek: " + progress*100/total + " %\n" + progress + " od " + total + "\n" + "Prosim za potrpljenje\n"); + }); + ArduinoOTA.onError([](ota_error_t error) { + const char * desc = "neznana napaka"; + if (error == OTA_AUTH_ERROR) + desc = "avtentikacija spodl. "; + else if (error == OTA_BEGIN_ERROR) + desc = "'begin' spodletel "; + else if (error == OTA_CONNECT_ERROR) + desc = "povezava spodletela "; + else if (error == OTA_RECEIVE_ERROR) + desc = "prejem spodletel "; + else if (error == OTA_END_ERROR) + desc = "'end' spodletel "; + render(1, String("Napaka[") + error + "]: \n" + desc + "\nOprostite."); + delay(DELAY); + }); + ArduinoOTA.begin(); + render(1, "~NASTAVLJAM TEHTNICO~\n" + "V kolikor ta tekst \n" + "dolgo ostane, je \n" + "tehtnica pokvarjena. \n"); + scale.begin(HX711_DATA, HX711_CLOCK); + Serial.println("scale.begin(SDA, SCL);"); + scale.tare(20); + Serial.println("scale.tare(20);"); + if (!LittleFS.begin()) { + render(1, "LittleFS.begin() \n" + "spodletel! \n" + "Ni trajne shrambe! \n" + "Nesite na popravilo. "); + delay(DELAY); + } + if (readFile("wifi_ssid") == "") + writeFile("wifi_ssid", "b"); + if (readFile("wifi_password") == "") + writeFile("wifi_password", ""); + if (readFile("ap_ssid") == "") + writeFile("ap_ssid", "tehtnica"); + if (readFile("ap_password") == "") + writeFile("ap_password", ""); + if (readFile("wifi") == "") + writeFile("wifi", "1"); + if (readFile("cena") == "") + writeFile("cena", "7.0"); + wifi_update(); + ftpSrv.begin("Pozdravljeni, to je tehtnica!"); + scale.set_scale(readFile("faktor").toFloat()); + cena = readFile("cena").toFloat(); + wake = millis(); +} +void loop() { + ftpSrv.handleFTP(); + ArduinoOTA.handle(); + if (millis() - wake > TIMEOUT) { + digitalWrite(POWER_DEVICES, LOW); + pinMode(POWER_DEVICES, INPUT); + ESP.deepSleep(0); + } + if (stanje % DOLŽINA == GLAVNO || stanje % DOLŽINA == CENA) { + float teža = scale.get_units(); + if (!wake_mass) + wake_mass = teža; + if (abs(wake_mass - teža) > WAKE_MASS) { + wake_mass = teža; + wake = millis(); + } + char teža_str[16]; + char cena_str[16]; + if (stanje % DOLŽINA == CENA) { + wake = millis(); + sprintf(teža_str, "% 6.1f", teža); + sprintf(cena_str, "% 6.1f", cena*strtof(teža_str, NULL)); + render(2, String(teža_str) + " g\n" + String(cena_str) + " eur"); + } else { + sprintf(teža_str, "% 6.1f", teža); + render(3, String(teža_str)); + } + } + if (millis() - nazadnje_gumb > DELAY) + switch (stanje % DOLŽINA) { + case KALIBRACIJA: + render(2, "KALIBRIRAM\n100 g"); + scale.calibrate_scale(100, 20); + writeFile("faktor", String(scale.get_scale())); + render(1, String(" ~ KALIBRACIJA ~ \n") + + "Faktor: " + scale.get_scale() + + "\nFaktor sem shranil\n" + "v trajni spomin."); + delay(DELAY); + stanje = GLAVNO; + break; + case WIFI: + writeFile("wifi", String(!(readFile("wifi").toInt()))); + wifi_update(); + render(1, String( " ~ ~ ~ WIFI ~ ~ ~ \n") + + "Operacija uspela. \n" + + "WiFi je sedaj \n" + + String(readFile("wifi").toInt() ? "vklopljen" : "izklopljen") + "."); + delay(DELAY); + stanje = GLAVNO; + break; + } + if (gumb) { + wake = millis(); + gumb = false; + switch (++stanje % DOLŽINA) { + case GLAVNO: + break; + case KALIBRACIJA: + render(1, String( " ~ KALIBRACIJA ~ \n") + + String("Faktor: ") + scale.get_scale() + + "\n100g naj bo na tehtn.\n" + + "Kmalu bom kalibriral."); + break; + case WIFI: + String sta = "Nisem povezan."; + if (WiFi.waitForConnectResult() == WL_CONNECTED) + sta = WiFi.localIP().toString(); + render(1, String( " ~ ~ ~ WIFI ~ ~ ~ \n") + + sta + + "\nKmalu bom wifi\n" + + (readFile("wifi").toInt() ? String("izklopil") : String("vklopil")) + " ..."); + break; + } + } +} |