chore: Now the actual dates are automatically substituted
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parent
8c33a1fae6
commit
8be79fa368
1 changed files with 67 additions and 93 deletions
160
src/main.cpp
160
src/main.cpp
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@ -2,28 +2,29 @@
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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 <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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#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_instace = "https://kekkai-api.redume.su";
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const char* kekkai = "https://kekkai-api.redume.su";
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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 long interval = 500;
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int dotCount = 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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{
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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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@ -41,34 +42,37 @@ void drawGraph(const float *val, int len,
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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 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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tft.setCursor(x0 + 120, y0 - 8);
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tft.printf("%.1f", vMax);
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tft.setCursor(x0 + 2, y0 + h + 2);
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tft.printf("%.1f", vMin);
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char buf[16];
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snprintf(buf, sizeof(buf), "%.1f", vMax);
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int16_t x1, y1;
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uint16_t bw, bh;
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tft.getTextBounds(buf, 0, 0, &x1, &y1, &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 setup(){
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void setup() {
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Serial.begin(115200);
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delay(1000);
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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.setCursor(0, 10);
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WiFi.mode(WIFI_STA);
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WiFi.begin(ssid, password);
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while (WiFi.status() != WL_CONNECTED) {
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unsigned long currentMillis = millis();
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@ -77,94 +81,64 @@ void setup(){
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tft.fillScreen(ST77XX_BLACK);
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tft.setCursor(0, 10);
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tft.print("Connecting");
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for (int i = 0; i < dotCount; i++) tft.print(".");
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for (int i = 0; i < dotCount; ++i) tft.print('.');
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dotCount = (dotCount + 1) % 4;
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}
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}
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tft.fillScreen(ST77XX_BLACK);
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tft.setCursor(0, 10);
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tft.print("Connected: ");
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tft.print(WiFi.localIP());
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delay(1000);
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HTTPClient http;
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WiFiClientSecure client;
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client.setInsecure();
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configTime(0, 0, "pool.ntp.org", "time.nist.gov");
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struct tm ti;
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while (!getLocalTime(&ti));
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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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String dateRateUrl = String(kekkai_instace)
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+ "/api/getRate/?from_currency=USD"
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+ "&conv_currency=RUB"
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+ "&date=2025-05-26";
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http.begin(client, dateRateUrl.c_str());
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int httpResCode = http.GET();
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tft.fillScreen(ST77XX_BLACK);
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tft.setCursor(0, 10);
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if (httpResCode > 0) {
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String payload = http.getString();
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StaticJsonDocument<256> doc;
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auto error = deserializeJson(doc, payload);
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if (error) {
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tft.print("JSON error1");
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Serial.println(error.c_str());
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} else {
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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.printf("1 %s = %.4f %s", from.c_str(), rate, to.c_str());
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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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int code = http.GET();
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if (code == 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.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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code = http.GET();
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if (code == 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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delay(1000);
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String periodRateUrl = String(kekkai_instace)
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+ "/api/getRate/?from_currency=USD"
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+ "&conv_currency=RUB"
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+ "&start_date=2025-05-01"
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+ "&end_date=2025-05-28";
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http.begin(client, periodRateUrl.c_str());
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httpResCode = http.GET();
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if (httpResCode < 200) {
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tft.fillScreen(ST77XX_BLACK);
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tft.setCursor(0, 10);
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tft.printf("API Error: %d", httpResCode);
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http.end();
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return;
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}
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String payload = http.getString();
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DynamicJsonDocument doc(32 * 1024);
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auto error = deserializeJson(doc, payload);
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if (error) {
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Serial.printf("JSON error2: %s\n", error.c_str());
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tft.fillScreen(ST77XX_BLACK);
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tft.setCursor(0, 10);
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tft.print("JSON error2");
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http.end();
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return;
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}
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JsonArray arr = doc.as<JsonArray>();
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size_t ratesLen = arr.size();
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if (ratesLen < 2) {
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tft.fillScreen(ST77XX_BLACK);
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tft.setCursor(0, 10);
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tft.print("No data");
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http.end();
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return;
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}
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float *rates = new float[ratesLen];
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for (size_t i = 0; i < ratesLen; ++i) {
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rates[i] = arr[i]["rate"].as<float>();
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}
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drawGraph(rates, ratesLen,
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8, 32, 144, 80,
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ST77XX_CYAN, ST77XX_WHITE);
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http.end();
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delete[] rates;
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}
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void loop() {}
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