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bec48059ac
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2247508dd3
2 changed files with 68 additions and 122 deletions
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@ -1,3 +1,13 @@
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; PlatformIO Project Configuration File
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;
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; Build options: build flags, source filter
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; Upload options: custom upload port, speed and extra flags
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; Library options: dependencies, extra library storages
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; Advanced options: extra scripting
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;
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; Please visit documentation for the other options and examples
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; https://docs.platformio.org/page/projectconf.html
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[env:esp32dev]
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platform = espressif32
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board = esp32dev
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@ -6,4 +16,4 @@ monitor_speed = 115200
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lib_deps =
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adafruit/Adafruit ST7735 and ST7789 Library @ ^1.7.1
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adafruit/Adafruit GFX Library @ ^1.10.10
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bblanchon/ArduinoJson @ ^7.0.4
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bblanchon/ArduinoJson@^7.0.4
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174
src/main.cpp
174
src/main.cpp
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@ -1,145 +1,55 @@
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#include <Arduino.h>
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#include <SPI.h>
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#include <Adafruit_GFX.h>
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#include <Adafruit_ST7735.h>
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#include <WiFi.h>
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#include <WiFiClientSecure.h>
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#include <HTTPClient.h>
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#include <Arduino.h>
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#include <ArduinoJson.h>
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#include <time.h>
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#define TFT_CS 12
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#define TFT_DC 2
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#define TFT_RST 25
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Adafruit_ST7735 tft(TFT_CS, TFT_DC, TFT_RST);
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const char* ssid = "NAME_WIFI";
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const char* password = "WIFI_PSWD";
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const char* kekkai = "https://kekkai-api.redume.su";
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#define TFT_CS 12 // D12, GPIO12
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#define TFT_RST 25 // D25, GPIO25
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#define TFT_DC 2 // D2, GPIO2
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Adafruit_ST7735 tft = Adafruit_ST7735(TFT_CS, TFT_DC, TFT_RST);
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const char* ssid = "Keenetic-4604";
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const char* password = "23137099";
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unsigned long previousMillis = 0;
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const long interval = 500;
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int dotCount = 0;
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const unsigned long updateInterval = 7200000; // 2h
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unsigned long lastUpdate = 0;
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void drawGraph(const float *val, int len,
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uint16_t x0, uint16_t y0,
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uint16_t w, uint16_t h,
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uint16_t colorLine, uint16_t colorAxis) {
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float vMin = val[0], vMax = val[0];
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for (int i = 1; i < len; ++i) {
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vMin = min(vMin, val[i]);
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vMax = max(vMax, val[i]);
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}
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float vRange = (vMax - vMin == 0) ? 1.0f : (vMax - vMin);
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tft.fillRect(x0, y0, w, h, ST77XX_BLACK);
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tft.drawRect(x0, y0, w, h, colorAxis);
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const uint8_t GRID_Y = 4;
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for (uint8_t g = 1; g < GRID_Y; ++g) {
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uint16_t y = y0 + g * h / GRID_Y;
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tft.drawFastHLine(x0 + 1, y, w - 2, 0x7BEF);
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}
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for (int i = 0; i < len - 1; ++i) {
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int x1 = x0 + 1 + (i * (w - 2)) / (len - 1);
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int y1 = y0 + h - 2 - (int)((val[i] - vMin) * (h - 3) / vRange);
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int x2 = x0 + 1 + ((i + 1) * (w - 2)) / (len - 1);
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int y2 = y0 + h - 2 - (int)((val[i + 1] - vMin) * (h - 3) / vRange);
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tft.drawLine(x1, y1, x2, y2, colorLine);
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}
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tft.setTextColor(colorAxis);
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tft.setTextSize(1);
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char buf[16];
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snprintf(buf, sizeof(buf), "%.1f", vMax);
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int16_t bx, by;
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uint16_t bw, bh;
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tft.getTextBounds(buf, 0, 0, &bx, &by, &bw, &bh);
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tft.setCursor(x0 + w - bw - 1, y0 - bh - 1);
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tft.print(buf);
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snprintf(buf, sizeof(buf), "%.1f", vMin);
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tft.setCursor(x0 + 1, y0 + h + 1);
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tft.print(buf);
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}
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void updateData() {
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configTime(0, 0, "pool.ntp.org", "time.nist.gov");
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struct tm ti;
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if (!getLocalTime(&ti)) return;
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char endDate[11], startDate[11];
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strftime(endDate, sizeof(endDate), "%Y-%m-%d", &ti);
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ti.tm_mon--;
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mktime(&ti);
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strftime(startDate, sizeof(startDate), "%Y-%m-%d", &ti);
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WiFiClientSecure client;
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client.setInsecure();
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HTTPClient http;
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String url = String(kekkai) + "/api/getRate/?from_currency=USD&conv_currency=RUB&date=" + endDate;
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http.begin(client, url.c_str());
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if (http.GET() == HTTP_CODE_OK) {
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DynamicJsonDocument d(1024);
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String p = http.getString();
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deserializeJson(d, p);
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float rate = d["rate"].as<float>();
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tft.fillScreen(ST77XX_BLACK);
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tft.setCursor(0, 10);
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tft.printf("1 USD = %.4f RUB", rate);
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}
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http.end();
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url = String(kekkai)
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+ "/api/getRate/?from_currency=USD&conv_currency=RUB&start_date=" + startDate
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+ "&end_date=" + endDate;
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http.begin(client, url.c_str());
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if (http.GET() == HTTP_CODE_OK) {
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DynamicJsonDocument d(32768);
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String p = http.getString();
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deserializeJson(d, p);
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JsonArray a = d.as<JsonArray>();
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int len = a.size();
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float *rates = new float[len];
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for (int i = 0; i < len; ++i) {
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rates[i] = a[i]["rate"].as<float>();
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}
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drawGraph(rates, len, 8, 32, 144, 80, ST77XX_CYAN, ST77XX_WHITE);
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delete[] rates;
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}
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http.end();
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}
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int cursorY = 10;
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void setup() {
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Serial.begin(115200);
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delay(1000);
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WiFi.mode(WIFI_STA);
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WiFi.begin(ssid, password);
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tft.initR(INITR_BLACKTAB);
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tft.setRotation(1);
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tft.setSPISpeed(40000000);
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tft.fillScreen(ST77XX_BLACK);
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tft.setTextColor(ST77XX_WHITE);
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tft.setTextSize(1);
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tft.setTextSize(2);
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tft.setCursor(10, cursorY);
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WiFi.begin(ssid, password);
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previousMillis = millis();
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dotCount = 0;
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while (WiFi.status() != WL_CONNECTED) {
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while(WiFi.status() != WL_CONNECTED){
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unsigned long currentMillis = millis();
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if (currentMillis - previousMillis >= interval) {
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previousMillis = currentMillis;
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tft.fillScreen(ST77XX_BLACK);
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tft.setCursor(10, 10);
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tft.print("Connecting");
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for (int i = 0; i < dotCount; i++) {
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tft.print(".");
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}
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dotCount++;
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if (dotCount > 3) {
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dotCount = 0;
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@ -148,14 +58,40 @@ void setup() {
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}
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tft.fillScreen(ST77XX_BLACK);
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updateData();
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lastUpdate = millis();
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}
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tft.setCursor(10, 10);
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tft.println("Connected:");
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tft.println(WiFi.localIP());
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HTTPClient http;
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void loop() {
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if (millis() - lastUpdate >= updateInterval) {
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updateData();
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lastUpdate = millis();
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String serverName = "https://kekkai-api.redume.su/api/getRate/";
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String serverPath = serverName + "?from_currency=USD&conv_currency=RUB&date=2025-05-26";
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http.begin(serverPath.c_str());
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int httpResCode = http.GET();
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if (httpResCode > 0) {
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tft.fillScreen(ST77XX_BLACK);
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tft.setCursor(10, 10);
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tft.setTextSize(1.3);
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String payload = http.getString();
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StaticJsonDocument<256> doc;
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DeserializationError error = deserializeJson(doc, payload);
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if (error) {
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tft.println("JSON error");
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return;
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}
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String from = doc["from_currency"].as<const char*>();
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String to = doc["conv_currency"].as<const char*>();
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float rate = doc["rate"].as<float>();
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tft.print("1 " + String(from) + " = " + String(rate) + " " + String(to));
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}
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}
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void loop() {}
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