btclock_v3/src/lib/price_fetch.cpp

57 lines
No EOL
1.7 KiB
C++

#include "price_fetch.hpp"
const PROGMEM char *cgApiUrl =
"https://api.coingecko.com/api/v3/simple/"
"price?ids=bitcoin&vs_currencies=usd%2Ceur";
TaskHandle_t priceFetchTaskHandle;
void taskPriceFetch(void *pvParameters) {
WiFiClientSecure *client = new WiFiClientSecure;
client->setInsecure();
for (;;) {
ulTaskNotifyTake(pdTRUE, portMAX_DELAY);
HTTPClient *http = new HTTPClient();
http->setUserAgent(USER_AGENT);
// Send HTTP request to CoinGecko API
http->begin(*client, cgApiUrl);
int httpCode = http->GET();
// Parse JSON response and extract average price
uint usdPrice, eurPrice;
if (httpCode == 200) {
String payload = http->getString();
JsonDocument doc;
deserializeJson(doc, payload);
// usdPrice = doc["bitcoin"]["usd"];
eurPrice = doc["bitcoin"]["eur"].as<uint>();
setPrice(eurPrice);
if (workQueue != nullptr && (getCurrentScreen() == SCREEN_BTC_TICKER ||
getCurrentScreen() == SCREEN_MSCW_TIME ||
getCurrentScreen() == SCREEN_MARKET_CAP)) {
WorkItem priceUpdate = {TASK_PRICE_UPDATE, 0};
xQueueSend(workQueue, &priceUpdate, portMAX_DELAY);
}
preferences.putUInt("lastPrice", eurPrice);
} else {
Serial.print(
F("Error retrieving BTC/USD price (CoinGecko). HTTP status code: "));
Serial.println(httpCode);
if (httpCode == -1) {
WiFi.reconnect();
}
}
}
}
void setupPriceFetchTask() {
xTaskCreate(taskPriceFetch, "priceFetch", (6 * 1024), NULL, tskIDLE_PRIORITY,
&priceFetchTaskHandle);
xTaskNotifyGive(priceFetchTaskHandle);
}