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TheQuickening/DIYv.h

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+
+
+#include <TFT_eSPI.h>
+#include "qrcode.h" 
+#include <Keypad.h>
+
+//keypad stuff
+String key_val;
+TFT_eSPI tft = TFT_eSPI();
+
+void screen_splash()
+{  
+tft.drawBitmap(0, 0, (uint8_t *)SplashDIY_map, 160, 128, TFT_WHITE);
+
+}
+
+void screen_input_sats(String fiat, int nosats)
+{
+tft.setTextSize(1);
+tft.setTextColor(TFT_RED, TFT_BLACK);
+tft.setCursor(25, 40);
+tft.println(fiat);
+tft.setTextColor(TFT_GREEN, TFT_BLACK);
+tft.setCursor(30, 57);
+tft.println(String(nosats));
+}
+
+void screen_qrdisplay(String XXX)
+{  
+ tft.fillScreen(TFT_WHITE);
+  XXX.toUpperCase();
+ const char* addr = XXX.c_str();
+ Serial.println(addr);
+  int qrSize = 12;
+  int sizes[17] = { 14, 26, 42, 62, 84, 106, 122, 152, 180, 213, 251, 287, 331, 362, 412, 480, 504 };
+  int len = String(addr).length();
+  for(int i=0; i<17; i++){
+    if(sizes[i] > len){
+      qrSize = i+1;
+      break;
+    }
+  }
+  QRCode qrcode;
+  uint8_t qrcodeData[qrcode_getBufferSize(qrSize)];
+  qrcode_initText(&qrcode, qrcodeData, qrSize-1, ECC_LOW, addr);
+  Serial.println(qrSize -1);
+
+  float scale = 2;
+
+  for (uint8_t y = 0; y < qrcode.size; y++) {
+    for (uint8_t x = 0; x < qrcode.size; x++) {
+      if(qrcode_getModule(&qrcode, x, y)){
+        tft.drawRect(15+2+scale*x, 2+scale*y, scale, scale, TFT_BLACK);
+      }
+      else{
+        tft.drawRect(15+2+scale*x, 2+scale*y, scale, scale, TFT_WHITE);
+      }
+    }
+  }
+}
+
+void screen_wifi_check()
+{
+tft.fillScreen(TFT_BLACK);
+tft.setCursor(25, 40);
+tft.setTextSize(1);
+tft.setTextColor(TFT_RED);
+tft.println("WIFI NOT CONNECTED");
+}
+
+void screen_refresh()
+{
+tft.fillScreen(TFT_BLACK);
+tft.setCursor(0, 0);
+tft.setTextColor(TFT_WHITE);
+}
+
+void screen_page_input()
+{
+  tft.fillScreen(TFT_BLACK);
+  tft.setTextColor(TFT_WHITE);
+  tft.setTextSize(1);
+  tft.setCursor(0, 17);
+  tft.println("AMOUNT THEN #");
+  tft.println("");
+  tft.println("");
+  tft.println(on_currency.substring(3) + ": ");
+  tft.println("");
+  tft.println("SATS: ");
+  tft.println("");
+  tft.println("");
+  tft.setTextSize(1);
+  tft.setCursor(30, 110);
+  tft.println("TO RESET PRESS *");
+}
+
+void screen_page_processing()
+{ 
+  tft.fillScreen(TFT_BLACK);
+  tft.setCursor(20, 40);
+  tft.setTextSize(2);
+  tft.setTextColor(TFT_WHITE);
+  tft.println("PROCESSING");
+}
+
+void screen_complete()
+{
+tft.fillScreen(TFT_BLACK);
+tft.setCursor(30, 40);
+tft.setTextSize(2);
+tft.setTextColor(TFT_GREEN);
+tft.println("COMPLETE");
+delay(1000);
+}
+
+void screen_cancel()
+{
+tft.fillScreen(TFT_BLACK);
+tft.setCursor(23, 40);
+tft.setTextSize(2);
+tft.setTextColor(TFT_RED);
+tft.println("CANCELLED");
+delay(1000);
+}
+
+
+//Set keypad
+const byte rows = 4; //four rows
+const byte cols = 3; //three columns
+char keys[rows][cols] = {
+  {'1','2','3'},
+  {'4','5','6'},
+  {'7','8','9'},
+  {'*','0','#'}
+};
+byte rowPins[rows] = {12, 14, 27, 26}; //connect to the row pinouts of the keypad
+byte colPins[cols] = {25, 33, 32}; //connect to the column pinouts of the keypad
+Keypad keypad = Keypad( makeKeymap(keys), rowPins, colPins, rows, cols );
+
+
+void get_keypad(){
+
+       key_val = keypad.getKey();
+       uint8_t key = 1;
+       if(key != 0) {
+        if(key >= 0x20 && key < 0x7F) { // ASCII String
+          if (isdigit((char)key)){
+          key_val = ((char)key);
+          }
+          else {
+          key_val = "";
+        } 
+        }
+}
+}

TheQuickening/LNPaySource.cpp

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+/**
+ * LNPay Payment Connector
+ *
+ * @author Tim Kijewski <[email protected]>
+ *
+ */
+
+#include <ArduinoJson.h>
+#include <WiFiClientSecure.h>
+#include <HTTPClient.h>
+
+#include "PaymentConnector.h"
+
+
+  //API Setup
+  String api_key = "3zB1DPk2bFwiocmjOasLJA4Tpfc2jUDB"; //  Public API key...Can be found here: https://lnpay.co/dashboard/integrations
+  String wallet_key = "wi_ghDiaaRxecSHGcV8JrmITOtb"; // Invoice key...Can be found here: https://lnpay.co/dashboard/advanced-wallets
+
+
+  //Endpoint Setup
+  String api_endpoint = "https://lnpay.co/v1";
+  String invoice_create_endpoint = "/wallet/" + wallet_key + "/invoice";
+  String invoice_check_endpoint = "/lntx/{{tx_id}}?fields=settled"; //append LNTX ID to the end (e.g. /user/lntx/lntx_mfEKSse22)
+
+  //HTTP client
+  HTTPClient http;
+
+
+  //Constructor
+  PaymentConnector::PaymentConnector (String currency_pair) {
+    _currency_pair = currency_pair;
+  }
+
+
+  /**
+   * PaymentConnector::createRequest
+   * 
+   * @param String method - GET,POST
+   * @param String path - REST path to be appended to api_endpoint
+   * @param String data - string of data for POST requests
+   * 
+   * @return String - response data from request
+   * 
+   */
+  String PaymentConnector::createRequest(String method,String path, String data)
+  {
+    String payload;
+    int httpCode;
+
+    Serial.println("PaymentConnector::createRequest BEGIN-------");
+    Serial.println("METHOD:" + method);
+    Serial.println("URL:" + api_endpoint + path);
+    Serial.println("DATA:" + data);
+
+    http.begin(api_endpoint + path); //Getting fancy to response size
+    http.addHeader("Content-Type","application/json");
+    http.addHeader("X-Api-Key",api_key);
+
+    if (method.equals("POST"))
+      httpCode = http.POST(data); //Make the request
+    else if (method.equals("GET")) {
+      httpCode = http.GET(); //Make the request
+    } else {
+      Serial.println("This HTTP method usage is not defined");
+    }
+
+    if (httpCode > 0) { //Check for the returning code
+      payload = http.getString();
+      Serial.println("RESPONSE:" + payload);
+    } else {
+      Serial.println("Error on HTTP request");
+    }
+    http.end(); //Free the resources
+    Serial.println("PaymentConnector::createRequest END--------");
+
+    return payload;
+  }
+
+  /**
+   * PaymentConnector::createInvoice
+   * 
+   * @param int num_satoshis - number of satoshis for invoice
+   * @param String memo - Memo for invoice
+   * 
+   * @return createInvoiceResponse - object containing both a payment_request AND an ID for lookup
+   * 
+   */
+
+  createInvoiceResponse PaymentConnector::createInvoice(int num_satoshis, String memo) {
+    String toPost = "{  \"num_satoshis\" : " + (String) num_satoshis +", \"memo\" :\""+ memo + String(random(1,1000)) + "\"}";
+
+    String payload = PaymentConnector::createRequest((String)"POST",invoice_create_endpoint,toPost);
+
+    const size_t capacity = JSON_OBJECT_SIZE(2) + 500;
+    DynamicJsonDocument doc(capacity);
+    deserializeJson(doc, payload);
+    Serial.println(payload);
+
+    const char* payment_request = doc["payment_request"]; 
+    const char* id = doc["id"]; 
+    String payreq = (String) payment_request;
+    String lntx_id = (String) id;
+    Serial.println(payreq);
+    Serial.println(lntx_id);
+
+    createInvoiceResponse cir;
+
+    cir.payment_request = payreq;
+    cir.payment_id = lntx_id;
+
+    return cir;
+  }
+
+  /**
+   * PaymentConnector::checkIfPaymentIsSettled
+   * 
+   * @param String id - provided from the PaymentConnector::createInvoice call to check if settled
+   * 
+   * @return int - 1 or 0 depending on settled
+   * 
+   */
+
+  int PaymentConnector::checkIfPaymentIsSettled(String id) {
+    invoice_check_endpoint.replace("{{tx_id}}",id);
+    String payloadd = PaymentConnector::createRequest((String)"GET",invoice_check_endpoint);
+    delay(1500);
+
+    StaticJsonDocument<200> doc;
+    DeserializationError error = deserializeJson(doc, payloadd);
+    int Settled = doc["settled"];
+
+    if (Settled == 1){
+      return 1;
+    } else{
+      return 0;
+    }
+  }