Increase pre PID filtering, reducing display flicker

Also improve movement sensitivities to be less extreme ramp up

README.md

@@ -48,6 +48,7 @@ Pressing both buttons will also exit the soldering mode.
 This menu allows you to cycle through all the options and set their values.
 The button near the tip cycles through the options, and the one near the usb changes the selected option.
 Note that settings are not saved until you exit the menu, and some settings such as screen flip do not apply until a power cycle is applied.
+If you leave the unit alone (ie don't press any buttons) on a setting, after 3 seconds the screen will scroll a longer version of the name
 
 * UVCO -> Undervoltage cut out level, settable in 1V increments from 10-24V
 * STMP -> The temperature the unit drops to in sleep mode
@@ -56,9 +57,11 @@ Note that settings are not saved until you exit the menu, and some settings such
 * MOTION -> Wether motion detection is enabled or not
 * SENSE -> Motion Sensitivity, H is more sensitive. L is lowest sensitivity (ie takes more movement to trigger)
 * TMPUNIT -> Temperature unit, C or F
-* DISPMD -> Display mode : {Fast,Slow,Rounded,None}
+* TMPRND -> Temperature Rounding, {1,5,10}
+* TMPSPD -> How fast the temperature should update in the soldering status screen.
 * FLPDSP -> Flip display for left handed users
 
+Temperature rounding means that the unit will round off the temperature before displaying. This can helpt to reduce the flickering of the temperature when the unit oscillates between two temperatures.
 ## Extras Menu
 This menu defaults to showing the current temperature on the tip. 
 Pressing the button near the iron tip will show the current input voltage. Pressing the other button while this is show will allow you to calibrate the reading if your iron is like mine and is not overly accurate out of the factory. (Press buttons to change measurement up and down, press both to exit and save). 
@@ -66,6 +69,9 @@ Pressing the button near the iron tip will show the current input voltage. Press
 Pressing the button near the usb enters the temperature offset setting menu, when the iron is cold, pressing the other button will start the unit calibrating for any offset in the tip temperature.
 
 # Version Changes:
+V1.10
+-Adds help text to settings
+- Improves settings for the display update rate
 
 V1.09
 - Adds display modes, for slowing down or simplifying the display

workspace/ts100/inc/Settings.h

@@ -14,8 +14,8 @@
 #define SETTINGSVERSION 0x08 /*Change this if you change the struct below to prevent people getting out of sync*/
 //Motion Sensitivity
 #define MOTION_HIGH 		(0x00)
-#define MOTION_MED  		(0x10)
-#define MOTION_LOW  		(0x20)
+#define MOTION_MED  		(0x01)
+#define MOTION_LOW  		(0x02)
 //Display Speeds
 #define DISPLAYMODE_FAST 	(0x00)
 #define DISPLAYMODE_MEDIUM 	(0x01)

workspace/ts100/src/Analog.c

@@ -23,7 +23,7 @@ uint16_t readDCVoltage(uint16_t divFactor) {
 //This allows us to read it in X10 mode
 //Returns temperature in C X10 mode
 int16_t readTipTemp() {
-	static uint32_t rollingAverage[4];
+	static uint32_t rollingAverage[16];
 	static uint8_t rIndex = 0;
 
 	/*The head has a thermocouple inline with the heater
@@ -54,9 +54,13 @@ int16_t readTipTemp() {
 	ad_sum = ad_sum - max - min; //remove the two outliers
 	avg_data = ad_sum / 8; //take the average
 	rollingAverage[rIndex] = avg_data;
-	rIndex = (rIndex + 1) % 4;
+	rIndex = (rIndex + 1) % 16;
 	return (rollingAverage[0] + rollingAverage[1] + rollingAverage[2]
-			+ rollingAverage[3]) / 4; //get the average
+			+ rollingAverage[3] + rollingAverage[4] + rollingAverage[5]
+			+ rollingAverage[6] + rollingAverage[7] + rollingAverage[8]
+			+ rollingAverage[9] + rollingAverage[10] + rollingAverage[11]
+			+ rollingAverage[12] + rollingAverage[13] + rollingAverage[14]
+			+ rollingAverage[15]) / 16; //get the average
 
 }
 
@@ -110,7 +114,7 @@ uint16_t readIronTemp(uint16_t calibration_temp, uint8_t read,
 	static uint16_t calTemp = 0;
 	static uint16_t lastVal = 0;
 	static uint16_t lastSetTemp;
-	if(setPointTemp!=0xFFFF)
+	if (setPointTemp != 0xFFFF)
 		lastSetTemp = setPointTemp;
 	if (calibration_temp != 0)
 		calTemp = calibration_temp;

workspace/ts100/src/MMA8652FC.c

@@ -34,7 +34,20 @@ void StartUp_Accelerometer(uint8_t sensitivity) {
 	I2C_RegisterWrite( CTRL_REG2, 0x40);	// Reset all registers to POR values
 	delayMs(2);		// ~1ms delay
 	I2C_RegisterWrite(FF_MT_CFG_REG, 0x78);	// Enable motion detection for X and Y axis, latch enabled
-	I2C_RegisterWrite(FF_MT_THS_REG, sensitivity|0x0F);		// Set threshold
+	uint8_t sens =0x0F;
+	switch(sensitivity)
+	{
+	case 0:
+		sens=0x1A;
+		break;
+	case 1:
+		sens=0x20;
+		break;
+	case 2:
+		sens=0x2A;
+		break;
+	}
+	I2C_RegisterWrite(FF_MT_THS_REG, sens);		// Set threshold
 	I2C_RegisterWrite(FF_MT_COUNT_REG, 0x01);	// Set debounce to 100ms
 
 	I2C_RegisterWrite( CTRL_REG4, 0x04);		// Enable motion interrupt

workspace/ts100/src/Main.c

@@ -38,6 +38,6 @@ void setup() {
 	Init_Oled(systemSettings.flipDisplay); 				//Init the OLED display
 
 	OLED_DrawString("VER 1.10", 8); 					//Version Number
-	delayMs(800);										//Pause to show version number
+	delayMs(500);										//Pause to show version number
 	Start_Watchdog(1000); 								//start the system watch dog as 1 second timeout
 }

workspace/ts100/src/Modes.c

@@ -5,14 +5,14 @@
  *      Author: Ralim <ralim@ralimtek.com>
  */
 #include "Modes.h"
-const char *SettingsLongNames[] = { "      Undervoltage Cutout",
-		"      Sleep Temperature", "      Sleep Timeout",
-		"      Shutdown Timeout", "      Motion Detection",
+const char *SettingsLongNames[] = { "      Undervoltage Cutout (V)",
+		"      Sleep Temperature (C)", "      Sleep Timeout (Minutes)",
+		"      Shutdown Timeout (Minutes)", "      Motion Detection",
 		"      Motion Sensitivity", "      Temperature Unit",
 		"      Temperature Rounding Amount",
 		"      Temperature Display Update Rate",
 		"      Flip Display for Left Hand" };
-const uint8_t SettingsLongNamesLengths[] = { 25, 23, 19, 22, 22, 24, 22, 33, 37,
+const uint8_t SettingsLongNamesLengths[] = { 29, 27, 29, 32, 22, 24, 22, 33, 37,
 		25 };
 uint8_t CalStatus = 0;
 //This does the required processing and state changes
@@ -141,9 +141,8 @@ void ProcessUI() {
 				systemSettings.flipDisplay = !systemSettings.flipDisplay;
 				break;
 			case MOTIONSENSITIVITY:
-				systemSettings.sensitivity += 0x10;
-				if (systemSettings.sensitivity > 0x20)
-					systemSettings.sensitivity = 0;		//reset to high on wrap
+				systemSettings.sensitivity++;
+				systemSettings.sensitivity = systemSettings.sensitivity % 3;
 
 				break;
 			case TEMPROUNDING:
@@ -320,6 +319,9 @@ void drawTemp(uint16_t temp, uint8_t x, uint8_t roundingMode) {
  */
 void DrawUI() {
 	static uint32_t lastOLEDDrawTime = 0;
+	static uint16_t lastSolderingDrawnTemp1 = 0;
+	static uint16_t lastSolderingDrawnTemp2 = 0;
+
 	static uint8_t settingsLongTestScrollPos = 0;
 	uint16_t temp = readIronTemp(0, 0, 0xFFFF);
 	switch (operatingMode) {
@@ -348,17 +350,24 @@ void DrawUI() {
 				&& (millis() - lastOLEDDrawTime < 50))
 			return;
 
-		drawTemp(temp, 0, systemSettings.temperatureRounding);
-
+		uint32_t tempavg = (temp + lastSolderingDrawnTemp1
+				+ lastSolderingDrawnTemp2);
+		tempavg /= 3;
+		drawTemp(tempavg, 0, systemSettings.temperatureRounding);
+		lastSolderingDrawnTemp1 = temp;
+		lastSolderingDrawnTemp2 = lastSolderingDrawnTemp1;
 		lastOLEDDrawTime = millis();
 		//Now draw symbols
 		OLED_DrawChar(' ', 3);
 		OLED_BlankSlot(6 * 12 + 16, 24 - 16);//blank out the tail after the arrows
 		OLED_BlankSlot(4 * 12 + 16, 24 - 16);//blank out the tail after the temp
-		if (getIronTimer() == 0) {
+		if (getIronTimer() == 0
+				&& (temp / 10) > (systemSettings.SolderingTemp / 10)) {
+			//Cooling
 			OLED_DrawSymbol(6, 5);
 		} else {
-			if (getIronTimer() < 1000) {
+			if (getIronTimer() < 1500) {
+				//Maintaining
 				OLED_DrawSymbol(6, 7);
 			} else {		//we are heating
 				OLED_DrawSymbol(6, 6);
@@ -507,6 +516,7 @@ void DrawUI() {
 		//Draw in temp and sleep
 		OLED_DrawString("SLP", 3);
 		drawTemp(temp, 4, systemSettings.temperatureRounding);
+		OLED_BlankSlot(84, 96 - 85);		//blank out after the temp
 
 		if (millis() - getLastMovement() > (10 * 60 * 1000)
 				&& (millis() - getLastButtonPress() > (10 * 60 * 1000))) {

workspace/ts100/src/PID.c

@@ -15,8 +15,8 @@ int32_t computePID(uint16_t setpoint) {
 	uint16_t currentReading = readIronTemp(0, 1,setpoint); //get the current temp of the iron
 	int16_t error = (int16_t) setpoint - (int16_t) currentReading; //calculate the error term
 	ITerm += (pidSettings.ki * error);
-	if (ITerm > MAXPIDOUTPUT)
-		ITerm = MAXPIDOUTPUT;
+	if (ITerm > MAXPIDOUTPUT/2)
+		ITerm = MAXPIDOUTPUT/2;
 	else if (ITerm < 0)
 		ITerm = 0; //cap at 0 since we cant force the iron to cool itself :)
 
@@ -34,8 +34,8 @@ int32_t computePID(uint16_t setpoint) {
 }
 /*Sets up the pid values*/
 void setupPID(void) {
-	pidSettings.kp = 25;
-	pidSettings.ki = 7;
-	pidSettings.kd = 2;
+	pidSettings.kp = 15;
+	pidSettings.ki = 2;
+	pidSettings.kd = 3;
 
 }