looks ready to use

README.md

@@ -1,4 +1,5 @@
 
 ## TODO
 
-* eeprom saving every 5 minutes and resuming
+* output temp control is not ideal (on/off does not represent values between 0 and 100)
+* experiment with p,i,d

hot_fermentation.ino

@@ -1,9 +1,15 @@
+#define useEEPROM 1
+
 #include <max6675.h>
 #include <Wire.h>
 #include <PID_v1.h>
 #include <GyverOLED.h>
-#include "GyverEncoder.h"  // Include the GyverEncoder library
+#include "GyverEncoder.h"
+
+#if useEEPROM
 #include <EEPROM.h>
+#endif
+
 
 // MAX6675 configuration
 int max_SO = 12;
@@ -22,7 +28,7 @@ GyverOLED<SSD1306_128x64, OLED_NO_BUFFER> oled;
 Encoder enc1(CLK, DT, SW, TYPE2);
 
 // SSR pin configuration
-const int ssrPin = 7;
+const int ssrPin = 2;
 
 // Profile structure definition
 struct Phase {
@@ -39,10 +45,11 @@ struct Profile {
 
 // Profiles definition
 Profile profiles[] = {
-  {"Test", 0, {{49, 1}, {51, 1}}, 2},
-  {"Пшеница", 1, {{47, 40}, {55, 40}, {65, 20}, {72, 20}, {85, 20}}, 5},
-  {"Veggies Sous Vide", 0, {{85, 120}}, 1},
-  {"Фитаза/Протеаза", 2, {{47, 120}, {53, 120}, {65, 150}, {72, 60}, {90, 105}, {50, 60}}, 6},
+  {"Chickpeas", 3, {{47, 120}, {53, 120}, {65, 180}, {72, 90}, {90, 90}}, 5},
+  {"Lentils", 3, {{47, 120}, {53, 120}, {65, 180}, {72, 90}, {90, 15}}, 5},
+  {"Wheat", 3, {{47, 60}, {53, 60}, {65, 20}, {72, 20}, {85, 20}}, 5},
+  {"Veggies Sous Vide", 2, {{55, 30}, {85, 120}}, 2},
+  {"Test", 1, {{49, 1}, {51, 1}}, 2},
 };
 
 // Global variables for profile selection and execution
@@ -57,7 +64,7 @@ bool inSelectionMode = true;
 
 // PID Control variables
 double Setpoint, Input, Output;
-double Kp = 2, Ki = 0.5, Kd = 0.25;
+double Kp = 1, Ki = 2, Kd = 0.25;
 PID myPID(&Input, &Output, &Setpoint, Kp, Ki, Kd, DIRECT);
 
 // Timing variables
@@ -80,7 +87,9 @@ void setup() {
   Serial.begin(9600);
   oled.init();          // Initialize the OLED
   oled.clear();         // Clear the display
-  displaySelection();
+  readEEPROM();
+  myPID.SetMode(AUTOMATIC);
+  myPID.SetOutputLimits(0, 1);
 }
 
 void loop() {
@@ -88,7 +97,8 @@ void loop() {
 
   if (inSelectionMode) {
     handleProfileSelection();
-  } else {
+  } 
+  else {
     handleExecution();
   }
 }
@@ -97,7 +107,7 @@ void handleExecution() {
   currentTime = millis();
   totalElapsedTime = (currentTime - totalStartTime) / 1000; // Total elapsed time in seconds
 
-  if ((currentTime - lastEEPROMWriteTime) >= (unsigned int) 10*60*1000) {
+  if ((currentTime - lastEEPROMWriteTime) >= (long)10*60*1000) {
     writeEEPROM();
   }
 
@@ -109,6 +119,11 @@ void handleExecution() {
   }
   myPID.Compute();
 
+  // Serial.print(Input);
+  // Serial.print(" ");
+  // Serial.print(Output);
+  // Serial.print(" ");
+  // Serial.println(Setpoint);
   // Switch SSR based on PID output and interval control
   if (currentTime - ssrLastSwitchTime > ssrSwitchInterval) {
     digitalWrite(ssrPin, Output > 0.5 ? HIGH : LOW);
@@ -122,7 +137,16 @@ void handleExecution() {
   // Display all phases and highlight the current one
   printPhases();
 
-  oled.update();
+  if (enc1.isClick()) {
+    Serial.println("clicked! resetting...");
+    activeProfileIndex = 100;
+    activeProfile = profiles[activeProfileIndex];
+    inSelectionMode = true;
+    writeEEPROM();
+    oled.clear();
+    displaySelection();
+    return;
+  }
 
   delay(1000); // Update every second
 }
@@ -148,7 +172,6 @@ void handleProfileSelection() {
   if (click) {
     activeProfileIndex = selectedProfileIndex;
     activeProfile = profiles[activeProfileIndex];
-    calculateTotalTime();
     inSelectionMode = false;  // Switch to execution mode
     phaseStartTime = totalStartTime = millis();  // Start the timer
     totalElapsedTime = 0;
@@ -156,7 +179,10 @@ void handleProfileSelection() {
     myPID.SetOutputLimits(0, 1);  // SSR is either ON or OFF
     // digitalWrite(ssrPin, HIGH);   // Start with heater on
     ssrLastSwitchTime = millis();
+    calculateTotalTime();
+    getPhaseAndTemperature();
     writeEEPROM();
+    oled.clear();
   }
 }
 
@@ -178,6 +204,7 @@ void displaySelection() {
 
 void calculateTotalTime() {
  // Calculate total process time, including transitions
+  activeProfile = profiles[activeProfileIndex];
   totalProcessTime = 0;
   for (int i = 0; i < activeProfile.numPhases; i++) {
     totalProcessTime += activeProfile.phases[i].duration * 60;
@@ -271,7 +298,7 @@ void printPhases() {
 
   
   for (int i = 0; i < activeProfile.numPhases; i++) {
-    if (i == currentPhase && !isComplete) {
+    if (i == currentPhase) {
       oled.invertText(true);  // Invert text for the current phase
 
       oled.setCursor(0, i + 2);  // Set cursor to the row corresponding to the phase
@@ -282,12 +309,14 @@ void printPhases() {
       oled.print(Input, 1);
       oled.print("c ");
       if (fabs(Setpoint - round(Setpoint)) < 0.05) {
-          oled.print((int)Setpoint);  // Print without decimals
+          oled.print(Setpoint, 0);  // Print without decimals
       } else {
           oled.print(Setpoint, 1);  // Print with 1 decimal place
       }
       oled.print("c ");
+      if (!isInTransition) {
         oled.print(timeBuffer);
+      }
       oled.print("        ");
     } else {
       oled.invertText(false); // Normal text for other phases
@@ -304,6 +333,11 @@ void printPhases() {
   }
 
   oled.invertText(false); // Ensure text inversion is off after the loop
+
+  oled.setCursor(110,7);
+  oled.print(Output*100,0);
+  oled.print("  ");
+  oled.update();
 }
 
 void formatTime(long seconds, char* buffer) {
@@ -325,6 +359,7 @@ void formatTime(long seconds, char* buffer) {
 }
 
 void writeEEPROM() {
+  #if useEEPROM
   lastEEPROMWriteTime = millis();
   EEPROM.put(0, activeProfileIndex);  // Store the active profile index
   EEPROM.put(4, totalElapsedTime);    // Store the total elapsed time
@@ -332,4 +367,27 @@ void writeEEPROM() {
   Serial.print(activeProfileIndex);
   Serial.print(" ");
   Serial.println(totalElapsedTime);
+  #endif
+}
+
+void readEEPROM() {
+  #if useEEPROM
+  long time = 0;
+  EEPROM.get(0, activeProfileIndex);  // Store the active profile index
+  EEPROM.get(4, time);    // Store the total elapsed time
+  if (activeProfileIndex != 100) {
+    totalStartTime = millis() - time*1000;
+    calculateTotalTime();
+    getPhaseAndTemperature();
+    inSelectionMode = false;
+  }
+  else {
+    oled.clear();
+    displaySelection();
+  }
+  Serial.print("EEPROM read: ");
+  Serial.print(activeProfileIndex);
+  Serial.print(" ");
+  Serial.println(time);
+  #endif
 }