Adding TFT graph functions

src/displays/tft.cpp

@@ -1,11 +1,157 @@
 #include "tft.h"
 
-extern Adafruit_ST7789 tft;
+// LCD display pins
+#define TFT_CS 7
+#define TFT_RST 12
+#define TFT_DC 14
+#define MOSI 4 // MOSI
+#define SCK 6  // SCK
+// Create an instance of the Adafruit ST7789 class using the custom SPI pins
 
-TFT::TFT()
+Adafruit_ST7789 tft = Adafruit_ST7789(TFT_CS, TFT_DC, MOSI, SCK, TFT_RST);
+
+TFT_Display::TFT_Display()
 {
 }
 
-TFT::~TFT()
+TFT_Display::~TFT_Display()
 {
 }
+
+void TFT_Display::start()
+{
+    tft.init(240, 320); // Init ST7789 320x240
+    tft.setRotation(1); // Set screen orientation
+}
+
+void TFT_Display::init(ReflowProfile *profile)
+{
+
+    clear();
+
+    tft.setTextColor(ST77XX_WHITE);
+    tft.setTextSize(2);
+    TFT_XY xy = getCenteredTextXY(profile->name);
+    tft.setCursor(xy.x, xy.y);
+    tft.println(profile->name);
+
+    drawGraph();
+}
+
+void TFT_Display::clear()
+{
+    tft.fillScreen(ST77XX_BLACK);
+}
+
+TFT_XY TFT_Display::getCenteredTextXY(char *text)
+{
+    TFT_XY xy;
+
+    uint8_t textLength = strlen(text);
+    int16_t x, y;
+    uint16_t w, h;
+    w = tft.width();
+    h = tft.height();
+
+    tft.getTextBounds(text, 0, 0, &x, &y, &w, &h);
+
+    xy.x = (w - textLength) / 2;
+    xy.y = (h - 1) / 2;
+
+    return xy;
+}
+
+TFT_XY TFT_Display::getRightAlignedTextXY(char *text, uint16_t x, uint16_t y)
+{
+    TFT_XY xy;
+
+    uint8_t textLength = strlen(text);
+    int16_t x1, y1;
+    uint16_t w, h;
+    w = tft.width();
+    h = tft.height();
+
+    tft.getTextBounds(text, 0, 0, &x1, &y1, &w, &h);
+
+    xy.x = x - textLength - 1;
+    xy.y = y;
+
+    return xy;
+}
+
+TFT_XY TFT_Display::getLeftAlignedTopTextXY(char *text, uint16_t x, uint16_t y)
+{
+    TFT_XY xy;
+
+    uint8_t textLength = strlen(text);
+    int16_t x1, y1;
+    uint16_t w, h;
+    w = tft.width();
+    h = tft.height();
+
+    tft.getTextBounds(text, 0, 0, &x1, &y1, &w, &h);
+
+    xy.x = x;
+    xy.y = y - h - 1;
+
+    return xy;
+}
+
+void TFT_Display::getMaxTempFromProfile(ReflowProfile *profile)
+{
+
+    for (uint8_t i = 0; i < 5; i++)
+    {
+        if (profile->steps[i].targetTempAtEnd > maxTemp)
+        {
+            maxTemp = profile->steps[i].targetTempAtEnd;
+        }
+    }
+
+    if (maxTemp < 200)
+    {
+        maxTemp = 200;
+    }
+    else if (maxTemp > 200 && maxTemp < 255)
+    {
+        if (maxTemp + 20 > 255)
+        {
+            maxTemp = 255;
+        }
+        else
+        {
+            maxTemp += 20;
+        }
+    }
+    else
+    {
+        maxTemp = 255;
+    }
+}
+
+TFT_XY TFT_Display::getXYWithinGraphBounds(uint8_t temp, uint8_t time)
+{
+
+    TFT_XY xy;
+
+    xy.x = graphXY.x + (graphWidth * (time / totalTIme));
+    xy.y = graphXY.y - (graphHeight * ((temp - minTemp) / (maxTemp - minTemp)));
+
+    return xy;
+}
+
+void TFT_Display::drawGraph()
+{
+
+    tft.drawPixel(graphXY.x, graphXY.y, ST77XX_WHITE);
+
+    tft.drawFastHLine(graphXY.x, graphXY.y, graphWidth, ST77XX_WHITE);
+
+    tft.drawFastVLine(graphXY.x, graphXY.y - graphHeight, graphHeight, ST77XX_WHITE);
+
+    tft.setTextColor(ST77XX_WHITE);
+    tft.setTextSize(1);
+    TFT_XY position = getLeftAlignedTopTextXY("20", graphXY.x, graphXY.y);
+    tft.setCursor(position.x, position.y);
+    tft.println("20");
+}

src/displays/tft.h

@@ -1,21 +1,44 @@
-#ifndef TFT_H
-#define TFT_H
+#ifndef TFT_Display_h
+#define TFT_Display_h
 
 #include <Arduino.h>
 #include <Adafruit_ST7789.h> // Include the ST7789 library
+#include <reflow.h>
 
-class TFT {
+struct TFT_XY
+{
+    int x;
+    int y;
+};
+
+class TFT_Display
+{
 public:
-    TFT();
-    ~TFT();
+    TFT_Display();
+    ~TFT_Display();
 
+    void start();
     // Add your class methods here
+    void init(ReflowProfile *profile);
     void clear();
 
-
 private:
     // Add your private members here
+    TFT_XY getCenteredTextXY(char *text);
+    TFT_XY getRightAlignedTextXY(char *text, uint16_t x, uint16_t y);
+    TFT_XY getLeftAlignedTopTextXY(char *text, uint16_t x, uint16_t y);
+    void getMaxTempFromProfile(ReflowProfile *profile);
 
+    uint8_t graphHeight = 180;
+    uint16_t graphWidth = 256;
+    TFT_XY graphXY = {32, 220};
+    uint16_t maxTemp = 0;
+    uint16_t totalTIme ;
+    uint8_t minTemp = 20;
+
+    TFT_XY getXYWithinGraphBounds(uint8_t temp, uint8_t time);
+
+    void drawGraph();
 };
 
 #endif // TFT_H

src/globals.cpp

@@ -59,7 +59,7 @@ ReflowProfile reflowProfiles[] = {
                       ReflowStep(ReflowProcessState::PREHEAT, 120, 35, EASE_OUT),
                       ReflowStep(ReflowProcessState::SOAK, 90, 155),
                       ReflowStep(ReflowProcessState::REFLOW, 45, 185, EASE_OUT),
-                      ReflowStep(ReflowProcessState::COOL, 45, 155, EASE_IN),
+                      ReflowStep(ReflowProcessState::COOL, 45, 155, EASE_OUT),
                       ReflowStep(ReflowProcessState::DONE, 0, 0)},
                     "138c Sn42Bi58\0"),
                   

src/main.cpp

@@ -1,6 +1,5 @@
 #include <Arduino.h>
 #include "ArduPID.h"
-#include <Adafruit_ST7789.h> // Include the ST7789 library
 #include <Adafruit_GFX.h>
 #include <voltageReference/AnalogRef.h>
 #include <Wire.h>
@@ -9,6 +8,7 @@
 #include "leds/leds.h"
 #include "reflow.h"
 #include "displays/oled.h"
+#include "displays/tft.h"
 #include "PID/PidController.h"
 #include "globals.h"
 #include "EEPROMDataManager.h"
@@ -16,17 +16,6 @@
 
 
 
-// LCD display pins
-#define TFT_CS 7
-#define TFT_RST 12
-#define TFT_DC 14
-#define MOSI 4 // MOSI
-#define SCK 6  // SCK
-// Create an instance of the Adafruit ST7789 class using the custom SPI pins
-Adafruit_ST7789 tft = Adafruit_ST7789(TFT_CS, TFT_DC, MOSI, SCK, TFT_RST);
-
-
-
 #define MOSTFET_PIN 17
 
 double currentTemp = 0;
@@ -38,12 +27,10 @@ LEDS leds = LEDS();
 // Declare the PID
 ArduPID PID;
 OledDisplay oled = OledDisplay();
-
-TemperatureController temperatureController ;
-
-
+TFT_Display tftDisplay ;
 
 
+TemperatureController temperatureController;
 
 void setup()
 {
@@ -65,6 +52,8 @@ void setup()
   reflowProcessState.set(USER_INPUT);
 
   temperatureController.checkPluggedInThermistors();
+
+  tftDisplay.start();
 }
 void loop()
 {
@@ -91,11 +80,20 @@ void loop()
   }
   ReflowProcessState newState = reflowProcessState.get();
 
-  if (newState != state) {
+  if (newState != state)
+  {
     Serial.println("State changed from " + String(STATE_STR(state)) + " to " + String(STATE_STR(newState)));
     // State changed from state to newState (user input or wifi input needs to be above here)
-    if (newState == PREHEAT) {
+    if (newState == PREHEAT)
+    {
+
+      // Initalize the TFT
+      tftDisplay.init(&chosenReflowProfile);
+      
+
+      //Start the reflow profile after tft to make sure the timer is accurate
       chosenReflowProfile.start();
+      // Start the PID
       pidController.start();
     }
   }
@@ -122,7 +120,6 @@ void loop()
     reflowProcessState.set(USER_INPUT);
   }
 
-
   // if (step.state == ReflowProcessState::DONE) {
   //   profile.start();
   //   return;

src/reflow.h

@@ -155,6 +155,8 @@ public:
         return curStep.calcTempAtPercentage(startTemp, percentage);
     }
 
+    
+
     uint8_t getCurrentStepRelativeTime() {
         uint32_t elapsedTime = timer.elapsed();
         uint16_t startTime = startTimes[STEPINDEX(curReflowStep())];