Added basic failure recovery

src/SmartServo.cpp

@@ -23,7 +23,7 @@ void SmartServo::moveServoTo(int pos, int stepSize)
 
 void SmartServo::moveServoToZero()
 {
-    moveServoTo(0, 10);
+    moveServoTo(0, 5);
 }
 
 void SmartServo::moveServoTo180()

src/TeaNetworking.cpp

@@ -10,12 +10,14 @@ void TeaNetworking::init(const char *ssid, const char *password)
   int attempts = 0;
   while (WiFi.status() != WL_CONNECTED)
   {
+    /*
     if (attempts++ > 30)
     {
       Serial.println("");
       Serial.println("Failed to connect to network.");
       return;
     }
+    */
     delay(500);
     Serial.print(".");
   }

src/TeaTimer.cpp

@@ -1,6 +1,6 @@
 #include "TeaTimer.hpp"
 
-TeaTimer::TeaTimer(ContinuousServo *t_servo)
+TeaTimer::TeaTimer(SmartServo *t_servo)
 {
     m_servo = t_servo;
 }
@@ -10,7 +10,7 @@ void TeaTimer::beginSteeping(unsigned long t_steepingDuration)
 {
     if (m_isSteeping)
         return;
-    m_servo->moveServoForMillisClockwise(m_servoTurningTime);
+    m_servo->moveServoTo180(); //moveServoForMillisClockwise(m_servoTurningTime);
     m_endSteepingTime = millis() + t_steepingDuration;
     m_isSteeping = true;
 }
@@ -18,7 +18,7 @@ void TeaTimer::beginSteeping(unsigned long t_steepingDuration)
 // Move servo up, stop timer immediately.
 void TeaTimer::end_steeping()
 {
-    m_servo->moveServoForMillisCounterClockwise(m_servoTurningTime);
+    m_servo->moveServoToZero();
     m_isSteeping = false;
 }
 

src/TeaTimer.hpp

@@ -1,12 +1,13 @@
 #pragma once
 #include <Arduino.h>
 #include "SmartServo.hpp"
-#include "ContinuousServo.hpp"
+//#include "ContinuousServo.hpp"
+#include "SmartServo.hpp"
 
 class TeaTimer
 {
 public:
-    TeaTimer(ContinuousServo *t_servo);
+    TeaTimer(SmartServo *t_servo);
     // Move servo down, start timer.
     void beginSteeping(unsigned long t_steepingDuration);
     // Move servo up, stop timer immediately.
@@ -20,6 +21,6 @@ private:
     bool m_isSteeping = false;
     // The time in millis when steeping is done.
     unsigned long m_endSteepingTime;
-    unsigned long m_servoTurningTime = 1000;
+    unsigned long m_servoTurningTime = 250;
-    ContinuousServo *m_servo;
+    SmartServo *m_servo;
 };

src/main.cpp

@@ -15,8 +15,9 @@
 #define TOUCH_BTN_PIN 16    // D0
 
 // RFID
-#define PN532_IRQ 13                        // D7
+#define PN532_IRQ 13   // D7 (not connected)
 #define PN532_RESET 12 // D6 (not connected)
+// Or use hardware Serial:
 Adafruit_PN532 nfc(PN532_IRQ, PN532_RESET); // RFID with I2C
 
 // OLED display
@@ -24,12 +25,13 @@ Adafruit_PN532 nfc(PN532_IRQ, PN532_RESET); // RFID with I2C
 auto display = Adafruit_SSD1306(128, 32, &WIRE);
 
 // FastLED
-#define PIXELCOUNT 20
+#define PIXELCOUNT 15
 CRGB leds[PIXELCOUNT]; // Define the array of leds
 
 // util classes
-ContinuousServo contServo(SERVO_PIN);
+// ContinuousServo contServo(SERVO_PIN);
-TeaTimer teaTimer(&contServo);
+SmartServo smartServo(SERVO_PIN);
+TeaTimer teaTimer(&smartServo);
 SmartRFID smartRFID(&nfc);
 SmartDial smartDial(POTENTIOMETER_PIN);
 SmartDisplay smartDisplay(&display);
@@ -80,18 +82,22 @@ void setup()
   FastLED.show();
   delay(500);
 
-  leds[19].setRGB(0, 0, 2);
+  leds[14].setRGB(0, 0, 2);
   FastLED.show();
   delay(500);
 
-  teaNet.init(ssid, password);
-
   smartRFID.init();
 
   Serial.println("Initializing OLED...");
   display.begin(SSD1306_SWITCHCAPVCC, 0x3C, false); // Address 0x3C for 128x32
   smartDisplay.printMsg("Tea is Great!");
+  delay(500);
 
+  smartDisplay.printMsg("waiting for internet connection");
+
+  teaNet.init(ssid, password);
+
+  smartDisplay.printMsg("Success!");
   delay(500);
 
   pinMode(LED_BUILTIN, OUTPUT);
@@ -99,11 +105,13 @@ void setup()
 
   buttonLeft.init();
   buttonRight.init();
+
+  smartServo.moveServoToZero();
 }
 
 void loop()
 {
-  contServo.tick();
+  // contServo.tick();
 
   switch (state)
   {
@@ -131,7 +139,7 @@ void loop()
 
     // this blocks execution until a tag has been detected (5s timeout)
     String uid = smartRFID.readTag(5000);
-    if (uid != "no_tag_detected")
+    if (uid != "no_tag_detected" && uid != "")
     {
       currentTea.m_rfidCode = uid;
       state = PROCESS_RFID_SCAN;
@@ -145,7 +153,7 @@ void loop()
     display.display();
     delay(500);
 
-    display.println("Success!");
+    display.println("connecting...");
     display.display();
     delay(250);
 
@@ -153,11 +161,26 @@ void loop()
     Serial.print("Result:");
     Serial.println(result);
 
+    // catch possible failure
+    if (result == JSON.parse("{}"))
+    {
+      smartDisplay.printMsg("GET FAILED");
+      delay(1000);
+      break;
+    }
+
     if (JSONVar::stringify(result) == "null")
     {
       Serial.print("TEA DOES NOT EXIST YET!");
       String payload = teaNet.createTeaData("Unnamed Tea", currentTea.m_rfidCode, 90, 180);
       result = teaNet.httpsPOSTRequest(shuttleServer + "/addtea", payload);
+      // catch possible failure
+      if (result == JSON.parse("{}"))
+      {
+        smartDisplay.printMsg("POST FAILED");
+        delay(1000);
+        break;
+      }
       state = State::DISPLAY_ADD_NEW_TEA_CONFIG;
     }
     else
@@ -172,7 +195,7 @@ void loop()
   {
 
     String uid = smartRFID.readTag(50); // just enough time to detect tag
-    if (uid != "no_tag_detected")
+    if (uid != "no_tag_detected" && uid != "")
     {
       currentTea.m_rfidCode = uid;
       smartDisplay.resetDisplay();
@@ -204,7 +227,14 @@ void loop()
       String payload = teaNet.createTeaData(currentTea);
       Serial.println(payload);
       smartDisplay.printMsg("sync...");
-      teaNet.httpsPOSTRequest(shuttleServer + "/updatetea", payload);
+      JSONVar res = teaNet.httpsPOSTRequest(shuttleServer + "/updatetea", payload);
+      // catch possible failure
+      if (res == JSON.parse("{}"))
+      {
+        smartDisplay.printMsg("POST FAILED");
+        delay(1000);
+        break;
+      }
       teaTimer.beginSteeping(5000);
       state = State::STEEPING_IN_PROGRESS;
     }
@@ -221,12 +251,9 @@ void loop()
     else
     {
       smartDisplay.printMsg("DONE");
-      if (!contServo.isTurning())
-      {
       delay(1000);
       state = State::REQUEST_FEEDBACK;
     }
-    }
     break;
   }
   case REQUEST_FEEDBACK:
@@ -234,7 +261,7 @@ void loop()
     smartDisplay.printRequestFeedbackScreen(currentTea);
 
     String uid = smartRFID.readTag(50); // just enough time to detect tag
-    if (uid != "no_tag_detected")
+    if (uid != "no_tag_detected" && uid != "")
     {
       currentTea.m_rfidCode = uid;
       smartDisplay.resetDisplay();
@@ -242,7 +269,8 @@ void loop()
       break;
     }
 
-    if (isBtnPressed()) {
+    if (isBtnPressed())
+    {
       // keep steeping time for next brew
       smartDisplay.printMsg("Feedback accepted (perfect)");
       delay(1000);
@@ -269,7 +297,7 @@ void loop()
     smartDisplay.printAddNewTeaConfigScreen(currentTea);
 
     String uid = smartRFID.readTag(50); // just enough time to detect tag
-    if (uid != "no_tag_detected")
+    if (uid != "no_tag_detected" && uid != "")
     {
       currentTea.m_rfidCode = uid;
       smartDisplay.resetDisplay();
@@ -291,7 +319,14 @@ void loop()
       smartDisplay.printMsg("Accepted");
       delay(500);
       smartDisplay.printMsg("sync...");
-      teaNet.httpsPOSTRequest(shuttleServer + "/updatetea", teaNet.createTeaData(currentTea));
+      JSONVar res = teaNet.httpsPOSTRequest(shuttleServer + "/updatetea", teaNet.createTeaData(currentTea));
+      // catch possible failure
+      if (res == JSON.parse("{}"))
+      {
+        smartDisplay.printMsg("POST FAILED");
+        delay(1000);
+        break;
+      }
       state = State::DISPLAY_SCANNED_TEA_CONFIG;
     }