v5.9 Calibration result

Author: davidkreidler

OpenCO2_Sensor.ino

@@ -10,7 +10,7 @@
    - WiFiManager: https://github.com/tzapu/WiFiManager
    - ArduinoMqttClient (if MQTT is defined)
 */
-#define VERSION "v5.8"
+#define VERSION "v5.9"
 
 #define HEIGHT_ABOVE_SEA_LEVEL 50             // Berlin
 #define TZ_DATA "CET-1CEST,M3.5.0,M10.5.0/3"  // Europe/Berlin time zone from https://github.com/nayarsystems/posix_tz_db/blob/master/zones.csv
@@ -605,7 +605,13 @@ void calibrate() {
   delay(500);
   uint16_t frcCorrection;
   scd4x.performForcedRecalibration((uint16_t)420, frcCorrection);
-  delay(400);
+  
+  if (frcCorrection == 65535) DisplayCalibrationFail();
+  else {
+    int correction = frcCorrection - 32768;
+    DisplayCalibrationResult(correction);
+  }
+  while (digitalRead(BUTTON) != 0) delay(400);  // wait for button press
   ESP.restart();
 }
 
@@ -741,6 +747,7 @@ void startWiFi() {
 #endif /* MQTT */
 
 #ifdef airgradient
+  delay(100);
   server.on("/", HandleRootClient);
   server.on("/metrics", HandleRoot);
   server.on("/favicon.ico", handleFavicon);

epd_abstraction.h

@@ -124,6 +124,8 @@ void displayBattery(uint8_t percentage);
 void updateDisplay();
 void displayImage(const unsigned char* image_buffer);
 void displayCalibrationWarning();
+void DisplayCalibrationFail();
+void DisplayCalibrationResult(int correction);
 void displayWiFi(bool useWiFi);
 void displayWiFiStrengh();
 

epd_abstraction.ino

@@ -1005,6 +1005,44 @@ void displayCalibrationWarning() {
   updateDisplay();
 }
 
+void DisplayCalibrationFail() {
+  Paint_Clear(BLACK);
+
+  // Exclamation Mark !
+  Paint_DrawLine( 100,  50, 100,  85, WHITE, DOT_PIXEL_4X4, LINE_STYLE_SOLID);
+  Paint_DrawCircle(100, 105,   5, WHITE, DOT_PIXEL_1X1, DRAW_FILL_FULL);
+
+                // Xstart,Ystart,Xend,Yend
+  Paint_DrawLine( 100,  20,  35, 120, WHITE, DOT_PIXEL_3X3, LINE_STYLE_SOLID);
+  Paint_DrawLine( 100,  20, 165, 120, WHITE, DOT_PIXEL_3X3, LINE_STYLE_SOLID);
+  Paint_DrawLine(  37, 120, 163, 120, WHITE, DOT_PIXEL_4X4, LINE_STYLE_SOLID);
+
+  if (english) {
+    Paint_DrawString_EN(6, 128, "Calibration", &Font24, BLACK, WHITE);
+    Paint_DrawString_EN(6, 152, "FAILED", &Font24, BLACK, WHITE);
+  } else {
+    Paint_DrawString_EN(6, 128, "Kalibration", &Font24, BLACK, WHITE);
+    Paint_DrawString_EN(6, 152, "FEHLGESCHLAGEN", &Font24, BLACK, WHITE);
+  }
+
+  updateDisplay();
+}
+
+void DisplayCalibrationResult(int correction) {
+  Paint_Clear(BLACK);
+
+  Paint_DrawString_EN(74, 100, "OK!", &Font24, BLACK, WHITE);
+  Paint_DrawString_EN(6, 152, "correction:", &Font24, BLACK, WHITE);
+
+  char acorrection[16];
+  if (correction < 0) {
+         snprintf(acorrection, sizeof(acorrection), "-%d ppm", -correction);
+  } else snprintf(acorrection, sizeof(acorrection),  "%d ppm",  correction);
+  Paint_DrawString_EN(0, 176, acorrection, &Font24, BLACK, WHITE);
+
+  updateDisplay();
+}
+
 void displayWiFi(bool useWiFi) {
   Paint_Clear(BLACK);