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Hooray, v2.5

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New temperature measurement (again…), show the effective heat power in
watts, advanced features for Rev. 3.x (more to come), some private
features for testing
This commit is contained in:
Luca Zimmermann
2016-12-05 18:27:19 +01:00
parent bca586d0ea
commit 17f415d323
2 changed files with 94 additions and 26 deletions
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106
Maiskolben_TFT/Maiskolben_TFT.ino
View File

@@ -8,13 +8,24 @@
/*
* If red is blue and blue is red change this (2.0 and above have new display types)
* If not sure, leave commented
* If not sure, leave commented, you will be shown a setup screen
*/
//#define HARDWARE_DEFINED_TFT 2
/*
* Based on your Hardware-Revision there may be modifications to the PCB.
* In V3 and up is a second voltage measurement circuit.
* For THT this should be set to anything < 3
* Normally leave this commented as it is stored in EEPROM
*/
//#define HARDWARE_REVISON 3
//#ifndef PIN_A7
//#define HARDWARE_REVISON 1
//#endif
/*
* Only used for testing, do not use.
*/
//#define INSTALL
//#define TEST_ADC
volatile boolean off = true, stby = true, stby_layoff = true, sw_stby_old = false, sw_up_old = false, sw_down_old = false, clear_display = true, store_invalid = true, menu = false;
volatile uint8_t pwm, threshold_counter;
@@ -27,13 +38,14 @@ uint8_t store_to = 255;
p_source power_source, power_source_old = NO_INIT;
boolean blink;
uint16_t cnt_measure_voltage, cnt_compute, cnt_sw_poll, cnt_but_press, cnt_off_press, cnt_but_store;
float v_c1, v_c2, v_c3;
float v_c1, v_c2, v_c3, v_in, v;
uint8_t array_index, array_count;
uint32_t sendNext;
uint32_t last_temperature_drop;
uint32_t last_on_state;
boolean wasOff = true, old_stby = false;
boolean autopower = true, bootheat = false;
uint8_t revision = 1;
Adafruit_ST7735 tft = Adafruit_ST7735(TFT_CS, TFT_DC, 0);
#define ST7735_GRAY 0x94B2
@@ -52,6 +64,8 @@ void setup(void) {
pinMode(SW_DOWN, INPUT_PULLUP);
pinMode(STBY_NO, INPUT_PULLUP);
pinMode(SW_STBY, INPUT_PULLUP);
pinMode(TFT_CS, OUTPUT);
digitalWrite(TFT_CS, HIGH);
Serial.begin(115200);
boolean force_menu = false;
@@ -60,6 +74,7 @@ void setup(void) {
updateEEPROM();
force_menu = true;
}
//delay(1000);
#ifdef HARDWARE_DEFINED_TFT
#if HARDWARE_DEFINED_TFT == 1
tft.initR(INITR_BLACKTAB);
@@ -67,7 +82,6 @@ void setup(void) {
#else
tft.initR(INITR_GREENTAB);
EEPROM.update(EEPROM_DISPLAY, INITR_GREENTAB);
delay(1000);
#endif
#else
if (force_menu || EEPROM.read(EEPROM_VERSION) < 23 || EEPROM.read(EEPROM_VERSION) == 255 || (EEPROM.read(EEPROM_DISPLAY) != INITR_GREENTAB && EEPROM.read(EEPROM_DISPLAY) != INITR_BLACKTAB)) {
@@ -123,6 +137,7 @@ void setup(void) {
}
while (digitalRead(SW_STBY)) {
int t = getTemperature();
Serial.println(t);
digitalWrite(HEATER_PWM, !digitalRead(SW_T1) | !digitalRead(SW_T2) | !digitalRead(SW_T3) | !digitalRead(SW_UP) | !digitalRead(SW_DOWN));
tft.setCursor(0,18);
tft.print(t);
@@ -164,14 +179,25 @@ void setup(void) {
}
detachInterrupt(digitalPinToInterrupt(SW_STBY));
}
revision = EEPROM.read(EEPROM_REVISION);
/*
* lower frequency = noisier tip
* higher frequency = needs higher pwm
*/
//PWM Prescaler = 1024
//TCCR2B = TCCR2B & (0b11111000 | 7);
//PWM Prescaler = 128
TCCR2B = TCCR2B & (0b11111000 | 5);
//PWM Prescaler = 1024 31Hz
//TCCR2B = (TCCR2B & 0b11111000) | 7;
//PWM Prescaler = 256 122Hz
//TCCR2B = (TCCR2B & 0b11111000) | 6;
//PWM Prescaler = 128 245Hz
TCCR2B = (TCCR2B & 0b11111000) | 5;
//PWM Prescaler = 64 490Hz
//TCCR2B = (TCCR2B & 0b11111000) | 4
//PWM Prescaler = 32 980Hz
//TCCR2B = (TCCR2B & 0b11111000) | 3;
//PWM Prescaler = 8 3.9kHz
//TCCR2B = (TCCR2B & 0b11111000) | 2
//PWM Prescaler = 1 31kHz - no Noise
//TCCR2B = (TCCR2B & 0b11111000) | 1;
stby = EEPROM.read(1);
for (uint8_t i = 0; i < 3; i++) {
stored[i] = EEPROM.read(2+i*2) << 8;
@@ -262,6 +288,13 @@ void optionMenu(void) {
if (!digitalRead(SW_T3)) break;
}
EEPROM.update(EEPROM_OPTIONS, (bootheat << 1) | autopower);
#if HARDWARE_REVISION >= 3
EEPROM.update(EEPROM_REVISION, HARDWARE_REVISION);
#else
if (EEPROM.read(EEPROM_VERSION) < 25 || EEPROM.read(EEPROM_VERSION) > 100) {
EEPROM.update(EEPROM_REVISION, 2);
}
#endif
EEPROM.update(EEPROM_VERSION, EE_VERSION);
}
@@ -279,6 +312,9 @@ void updateEEPROM(void) {
int getTemperature(void) {
analogRead(TEMP_SENSE);//Switch ADC MUX
uint16_t adc = median(TEMP_SENSE);
#ifdef TEST_ADC
Serial.println(adc);
#endif
if (adc >= 1020) { //Illegal value, tip not plugged in
analogWrite(HEATER_PWM, 0);
if (!off)
@@ -287,17 +323,28 @@ int getTemperature(void) {
} else {
analogWrite(HEATER_PWM, pwm); //switch heater back to last value
}
return round(adc < 210 ? (((float)adc) * 0.530805 + 38.9298) : (((float)adc) * 0.415375 + 64.6123));
//return round(((float) adc)*ADC_TO_TEMP_GAIN+ADC_TO_TEMP_OFFSET); //old conversion
return round(adc*0.574503+43.5); //nasty resistors...
//return round(adc < 210 ? (((float)adc) * 0.530805 + 38.9298) : (((float)adc) * 0.415375 + 64.6123)); //old conversion
//return round(((float) adc)*ADC_TO_TEMP_GAIN+ADC_TO_TEMP_OFFSET); //even older conversion
}
void measureVoltage(void) {
analogRead(BAT_C1); //Switch analog MUX before measuring
v_c1 = v_c1*.9+(analogRead(BAT_C1)*5/1024.0)*.1;
v_c1 = v_c1*.9+(analogRead(BAT_C1)*5/1024.0)*.1; //no divisor
analogRead(BAT_C2);
v_c2 = v_c2*.9+(analogRead(BAT_C2)*5/512.0)*.1;
v_c2 = v_c2*.9+(analogRead(BAT_C2)*5/512.0)*.1; //divisor 1:1 -> /2
analogRead(BAT_C3);
v_c3 = v_c3*.9+(analogRead(BAT_C3)*(5.0*1510.0)/(510.0*1024.0))*.1; //maximum measurable is 14.79V
v_c3 = v_c3*.9+(analogRead(BAT_C3)*(5.0*3.0)/1024.0)*.1; //maximum measurable is ~15V
v = v_c3;
if (revision < 3) return;
#ifdef VIN
analogRead(VIN);
v_in = v_in*.9+(analogRead(VIN)*25/1024.0)*.1; //maximum measurable is ~24.5V
Serial.println(v_in);
if (v_in > 1.0) {
v = v_in; //backwards compatibility
}
#endif
}
uint16_t median(uint8_t analogIn) {
@@ -552,7 +599,15 @@ void display(void) {
cur_t_old = temperature;
}
if (v_c3 > 1.0) {
if (v_c3 < 5.0) {
tft.setTextColor(ST7735_YELLOW, ST7735_BLACK);
tft.setCursor(122,5);
tft.setTextSize(2);
int power = min(15,v)*min(15,v)/4.8*pwm/255;
if (power < 10) tft.write(' ');
tft.print(power);
tft.write('W');
if (v < 5.0) {
power_source = POWER_USB;
} else if (v_c2 < 1.0) {
power_source = POWER_CORD;
@@ -581,14 +636,15 @@ void display(void) {
power_source_old = power_source;
}
if (power_source == POWER_CORD) {
tft.drawBitmap(0, 5, power_cord, 24, 9, tft.Color565(max(0, min(255, (14.5-v_c3)*112)), max(0, min(255, (v_c3-11)*112)), 0));
/*
tft.setTextSize(2);
tft.setTextColor(ST7735_GREEN, ST7735_BLACK);
tft.setCursor(0,5);
tft.print(v_c3);
tft.print("V ");
*/
if (v > v_c3) {
tft.setTextSize(2);
tft.setTextColor(ST7735_GREEN, ST7735_BLACK);
tft.setCursor(0,5);
tft.print(v);
tft.print("V ");
} else {
tft.drawBitmap(0, 5, power_cord, 24, 9, tft.Color565(max(0, min(255, (14.5-v)*112)), max(0, min(255, (v-11)*112)), 0));
}
} else if (power_source == POWER_LIPO) {
float volt[] = {v_c1, v_c2-v_c1, v_c3-v_c2};
for (uint8_t i = 0; i < 3; i++) {
@@ -604,7 +660,7 @@ void display(void) {
}
#ifdef SHUTOFF_ACTIVE
if (autopower) {
if (pwm > max(20, (cur_t-150)/50*round(25-v_c3))+5) {
if (pwm > max(20, (cur_t-150)/50*round(25-min(15,v)))+5) {
//if (target_t-cur_t > 0.715*exp(0.0077*target_t)) {
//if (cur_t / (double)target_t < STANDBY_TEMPERATURE_DROP) {
if (stby && !wasOff) {
@@ -699,6 +755,7 @@ void loop(void) {
if (sendNext <= millis()) {
sendNext += 100;
#ifndef TEST_ADC
Serial.print(stored[0]);
Serial.print(";");
Serial.print(stored[1]);
@@ -723,7 +780,8 @@ void loop(void) {
Serial.print(";");
Serial.print(v_c2);
Serial.print(";");
Serial.println(v_c3);
Serial.println(v);
#endif
Serial.flush();
display();
}
@@ -734,7 +792,7 @@ void loop(void) {
case 'T':
if (Serial.available() >= 3) {
t = serialReadTemp();
Serial.println(t);
//Serial.println(t);
if (t <= MAX_TEMP && t >= MIN_TEMP) {
set_t = t;
updateEEPROM();

14
Maiskolben_TFT/definitions.h
View File

@@ -1,5 +1,5 @@
#define VERSION "2.4"
#define EE_VERSION 24
#define VERSION "2.5"
#define EE_VERSION 25
#define EEPROM_CHECK 42
#define STBY_TEMP 150
@@ -26,6 +26,10 @@
//Time in that the temperature must rise by the set temperature
#define TEMP_RISE_TIME 1000
//#define OLD_PWM
// RX 0
// TX 1
#define SW_STBY 2
#define HEATER_PWM 3
#define SW_DOWN 4
@@ -35,13 +39,18 @@
#define SW_T2 8
#define SW_T1 9
#define TFT_CS 10
// MOSI 11
#define TFT_BL 12 //use MISO PULLUP as switch
// SCK 13
#define TEMP_SENSE A0
#define STBY_NO A1
#define BAT_C3 A2
#define BAT_C2 A3
#define BAT_C1 A4
#define TFT_DC A5
#ifdef PIN_A7
#define VIN A7
#endif
#define kp 0.03
#define ki 0.00001
@@ -62,6 +71,7 @@
#define EEPROM_VERSION 10
#define EEPROM_DISPLAY 11
#define EEPROM_OPTIONS 12
#define EEPROM_REVISION 13
#define EEPROM_INSTALL 42