M5Stack

M5Stack1

#include <ezTime.h>
#include <M5ez.h>
#include <M5Stack.h>
#include <ArduinoJson.h>
#include <HTTPClient.h>

void setup() {
  ez.begin();
}

void loop() {
  ezMenu myMenu;
  myMenu.addItem("Bitcoin Price", mainmenu_one);
  myMenu.addItem("Lightning Invoice", mainmenu_two);
  myMenu.addItem("Settings", mainmenu_three);
  myMenu.run();  
}

void mainmenu_one() {

  HTTPClient client;
  client.begin("https://api.opennode.co/v1/rates");
  int httpCode = client.GET();
  if (httpCode >0) {
    const size_t capacity = 162*JSON_OBJECT_SIZE(1) + 8*JSON_OBJECT_SIZE(2) + JSON_OBJECT_SIZE(169) + 2110;
  DynamicJsonDocument doc(capacity);  

  deserializeJson(doc, client.getString());

  JsonObject data = doc["data"];

  ez.msgBox("", data["BTCUSD"]["USD"]);
  }
  client.end();
}

void mainmenu_two() {
  HTTPClient client;
  client.begin("https://api.opennode.co/v1/charges");
  client.addHeader("Content-Type", "application/json");
  client.addHeader("Authorization", "046ef527-db76-47da-ab5b-b3ce2e64996c");
  client.POST("{\"amount\":\"10\"}");
  
  const size_t capacity = 2*JSON_OBJECT_SIZE(1) + JSON_OBJECT_SIZE(2) + JSON_OBJECT_SIZE(19) + 950;
  DynamicJsonDocument doc(capacity);  

  deserializeJson(doc, client.getString());

  JsonObject data = doc["data"];

  //ez.msgBox("", data["lightning_invoice"]["payreq"]);
  const char* lnInvoice = data["lightning_invoice"]["payreq"];
  ez.screen.clear();
  M5.begin();
  M5.Lcd.qrcode(lnInvoice);
  delay(10000);
  client.end();
}

void mainmenu_three() {
  ez.settings.menu();
}