feat: graph creation has been added
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parent
2247508dd3
commit
8c33a1fae6
2 changed files with 131 additions and 68 deletions
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@ -1,13 +1,3 @@
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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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[env:esp32dev]
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platform = espressif32
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platform = espressif32
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board = esp32dev
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board = esp32dev
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@ -16,4 +6,4 @@ monitor_speed = 115200
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lib_deps =
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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 ST7735 and ST7789 Library @ ^1.7.1
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adafruit/Adafruit GFX Library @ ^1.10.10
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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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187
src/main.cpp
187
src/main.cpp
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@ -1,97 +1,170 @@
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#include <Arduino.h>
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#include <SPI.h>
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#include <SPI.h>
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#include <Adafruit_GFX.h>
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#include <Adafruit_GFX.h>
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#include <Adafruit_ST7735.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 <HTTPClient.h>
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#include <Arduino.h>
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#include <ArduinoJson.h>
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#include <ArduinoJson.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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#define TFT_CS 12 // D12, GPIO12
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const char* ssid = "NAME_WIFI";
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#define TFT_RST 25 // D25, GPIO25
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const char* password = "WIFI_PSWD";
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#define TFT_DC 2 // D2, GPIO2
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const char* kekkai_instace = "https://kekkai-api.redume.su";
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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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unsigned long previousMillis = 0;
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const long interval = 500;
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const long interval = 500;
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int dotCount = 0;
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int dotCount = 0;
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int cursorY = 10;
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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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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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void setup() {
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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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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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}
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void setup(){
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Serial.begin(115200);
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Serial.begin(115200);
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delay(1000);
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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.initR(INITR_BLACKTAB);
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tft.setRotation(1);
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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.fillScreen(ST77XX_BLACK);
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tft.setTextColor(ST77XX_WHITE);
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tft.setTextColor(ST77XX_WHITE);
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tft.setTextSize(2);
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tft.setTextSize(1);
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tft.setCursor(10, cursorY);
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tft.setCursor(0, 10);
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while(WiFi.status() != WL_CONNECTED){
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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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unsigned long currentMillis = millis();
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if (currentMillis - previousMillis >= interval) {
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if (currentMillis - previousMillis >= interval) {
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previousMillis = currentMillis;
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previousMillis = currentMillis;
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tft.fillScreen(ST77XX_BLACK);
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tft.fillScreen(ST77XX_BLACK);
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tft.setCursor(10, 10);
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tft.setCursor(0, 10);
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tft.print("Connecting");
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tft.print("Connecting");
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for (int i = 0; i < dotCount; i++) {
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for (int i = 0; i < dotCount; i++) tft.print(".");
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tft.print(".");
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dotCount = (dotCount + 1) % 4;
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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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}
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}
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}
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}
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}
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tft.fillScreen(ST77XX_BLACK);
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tft.fillScreen(ST77XX_BLACK);
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tft.setCursor(10, 10);
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tft.setCursor(0, 10);
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tft.println("Connected:");
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tft.print("Connected: ");
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tft.println(WiFi.localIP());
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tft.print(WiFi.localIP());
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delay(1000);
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HTTPClient http;
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HTTPClient http;
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WiFiClientSecure client;
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String serverName = "https://kekkai-api.redume.su/api/getRate/";
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client.setInsecure();
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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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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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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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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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String payload = http.getString();
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StaticJsonDocument<256> doc;
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StaticJsonDocument<256> doc;
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auto error = deserializeJson(doc, payload);
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DeserializationError error = deserializeJson(doc, payload);
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if (error) {
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if (error) {
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tft.println("JSON error");
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tft.print("JSON error1");
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return;
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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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}
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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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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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}
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void loop() {}
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void loop() {}
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