From 360b65f6000010b02e826cca7050383ef963db4b Mon Sep 17 00:00:00 2001
From: Michael Clemens <clemens@noreply.localhost>
Date: Thu, 11 Nov 2021 23:55:27 +0100
Subject: [PATCH] =?UTF-8?q?=E2=80=9Ehr50-remote-display.ino=E2=80=9C=20hin?=
 =?UTF-8?q?zuf=C3=BCgen?=
MIME-Version: 1.0
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---
 hr50-remote-display.ino | 92 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 92 insertions(+)
 create mode 100644 hr50-remote-display.ino

diff --git a/hr50-remote-display.ino b/hr50-remote-display.ino
new file mode 100644
index 0000000..bd7068c
--- /dev/null
+++ b/hr50-remote-display.ino
@@ -0,0 +1,92 @@
+#include <WiFi.h>
+#include <HTTPClient.h>
+#include "Arduino.h"
+#include "heltec.h"
+#include <ArduinoJson.h>
+
+const char* ssid = "<WIFI-SSID>";
+const char* password = "<WIFI-PASSWORD>";
+String api_url = "http://192.168.99.193:5000/status";
+
+int first_row = 0;
+int second_row = 24;
+int third_row = 48;
+
+void setup() {
+  Heltec.begin(true /*DisplayEnable Enable*/, false /*LoRa Disable*/, false /*Serial Enable*/);
+  Heltec.display->flipScreenVertically();
+  WiFi.begin(ssid, password);
+  delay(4000);
+}
+
+void printError(String err){
+    Heltec.display->clear();
+    Heltec.display->setFont(DialogInput_plain_16);
+    Heltec.display->setTextAlignment(TEXT_ALIGN_LEFT);
+    Heltec.display->drawString(0, second_row, err );
+    Heltec.display->display();
+}
+
+void loop() {
+  //Check WiFi connection status
+  if (WiFi.status() == WL_CONNECTED) {
+    HTTPClient http;
+    String payload = "";
+    http.begin(api_url.c_str());
+
+    // Send HTTP GET request
+    int httpResponseCode = http.GET();
+
+    if (httpResponseCode > 0) {
+      payload = http.getString();
+    }
+    else {
+      printError("HTTPError: " + (String)httpResponseCode);
+    }
+    // Free resources
+    http.end();
+
+    StaticJsonDocument<200> doc;
+    deserializeJson(doc, payload);
+    JsonObject obj = doc.as<JsonObject>();
+
+    if ( obj != NULL ) {
+      String band = obj["BND"].as<String>();
+      String pep = obj["PEP"].as<String>();
+      String avg = obj["AVG"].as<String>();
+      String swr = obj["SWR"].as<String>();
+      String voltage = obj["VLT"].as<String>();
+      String power = pep + "W/" + avg + "W";
+      String ptt = obj["PTT"].as<String>();
+      String temp = obj["TMP"].as<String>();
+
+      // clear the display
+      Heltec.display->clear();
+      Heltec.display->setFont(DialogInput_plain_16);
+      // print left column
+      Heltec.display->setTextAlignment(TEXT_ALIGN_LEFT);
+      Heltec.display->drawString(0, first_row, band );
+      Heltec.display->drawString(0, second_row, power );
+      Heltec.display->drawString(0, third_row, voltage );
+      // print right column
+      Heltec.display->setTextAlignment(TEXT_ALIGN_RIGHT);
+      Heltec.display->drawString(128, first_row, swr );
+      Heltec.display->drawString(128, second_row, ptt );
+      Heltec.display->drawString(128, third_row, temp );
+      Heltec.display->display();
+    }
+    else
+    {
+      // print a "(!)" centered in the third row
+      // this happens when the TRX/PA is transmitting
+      // or otherwise an empty response was send by the API
+      Heltec.display->setFont(DialogInput_plain_16);
+      Heltec.display->setTextAlignment(TEXT_ALIGN_LEFT);
+      Heltec.display->drawString(58, third_row, "(!)" );
+      Heltec.display->display();
+    }
+  }
+  else {
+    printError("No WiFi!");
+  }
+}