Heater/heater3/heater3.c

#include "heater3.h"
#include "lcd-twi.h"
#include "potentiometers.h"
#include "saveload.h"
#include "fifo.h"
#include "tools.h"

const char cyrillic[64] = {	'A', 0xA0, 'B', 0xA1, 0xE0, 'E', 0xA3, 0xA4, 0xA5, 0xA6, 'K', 0xA7, 'M', 'H', 'O', 0xA8,
							'P', 'C', 'T', 0xA9, 0xAA, 'X', 0xE1, 0xAB, 0xAC, 0xE2, 0xAD, 0xAE, 'b', 0xAF, 0xB0, 0xB1,
							'a', 0xB2, 0xB3, 0xB4, 0xE3, 'e', 0xB6, 0xB7, 0xB8, 0xB9, 0xBA, 0xBB, 0xBC, 0xBD, 'o', 0xBE,
							'p', 'c', 0xBF, 'y', 0xE4, 'x', 0xE5, 0xC0, 0xC1, 0xE6, 0xC2, 0xC3, 0xC4, 0xC5, 0xC6, 0xC7 };

volatile uint8_t btn_act = 0;
volatile uint8_t rxbuf[40];
volatile uint8_t count = 0;
volatile comdata_str rxdata;
volatile uint8_t tick1 = 0;
volatile uint8_t tick2 = 0;
uint8_t cal_tmax = 130;
uint8_t cal_tmin = 40;

heater_str	heater[2];
opamp_str	opamp[2];
preset_str	preset[2];
uint8_t		txrequest = 0;

static FILE lcd_stdout = FDEV_SETUP_STREAM(lcd_putchar, NULL, _FDEV_SETUP_WRITE);
static FILE uart_stdout = FDEV_SETUP_STREAM(uart_putchar, NULL, _FDEV_SETUP_WRITE);

FIFO(512) fifo0;

ISR(PCINT3_vect)
{
	btn_act = 1;
	if(((BTNPIN >> 4) | 0xF0) == 0xF0)
	{
		cli();
		WDTCSR |= (1 << WDCE) | (1 << WDE);
	}
}

ISR(INT0_vect) /*OVERCURRENT PROTECTION 1*/
{
	cli();
	GATEPORT |= (1 << GATE1) | (1 << GATE2);
	LEDPORT &= ~((1 << LED1) | (1 << LED2));
	PORTC &= ~(1 << V12POWER);
	heater[0].status.heating = heater[1].status.heating = 0;
	heater[0].status.onoff = heater[1].status.onoff = 0;
	heater[0].status.ocp = 1;
}

ISR(INT1_vect) /*OVERCURRENT PROTECTION 2*/
{
	cli();
	GATEPORT |= (1 << GATE1) | (1 << GATE2);
	LEDPORT &= ~((1 << LED1) | (1 << LED2));
	PORTC &= ~(1 << V12POWER);
	heater[0].status.heating = heater[1].status.heating = 0;
	heater[0].status.onoff = heater[1].status.onoff = 0;
	heater[1].status.ocp = 1;
}

ISR(USART0_RX_vect)
{
	count++;
	rxbuf[count - 1] = UDR0;
}

ISR(USART0_UDRE_vect)
{
	if(FIFO_IS_EMPTY(fifo0))
	{
		UCSR0B &= ~(1 << UDRIE0);
	}
	else
	{
		UDR0 = FIFO_FRONT(fifo0);
		FIFO_POP(fifo0);
	}
}

ISR(TIMER0_COMPA_vect)
{
	tick1 = 1;
}

ISR(TIMER1_COMPA_vect)
{
	tick2 = 1;
}

void init()
{
	/* Watchdog clear*/
	MCUSR &= ~(1 << WDRF);
	WDTCSR |= (1 << WDCE) | (1 << WDE);
	WDTCSR = 0x00;
	
	/* External interrupts initialization */
	EICRA |= (1 << ISC01) | (1 << ISC11);
	EIMSK |= (1 << INT0) | (1 << INT1);
	
	/* GPIO Initialization */
	PORTC |= (1 << GATE1) | (1 << GATE2)  | (1 << V12POWER);
	DDRC  |= (1 << LED1) | (1 << LED2) | (1 << GATE1) | (1 << GATE2) | (1 << V12POWER);
	
	/* UART Initialization */
	TXD_PORT |= (1 << TXD_BIT);
	TXD_DDR |= (1 << TXD_BIT);
	#if U2X0_SET
		UBRR0H = (uint8_t)(((F_CPU / (8 * BAUD_RATE)) - 1) >> 8);
		UBRR0L = (uint8_t)((F_CPU / (8 * BAUD_RATE)) - 1);
		UCSR0A = (1 << U2X0);
	#elif
		UBRR0H = (uint8_t)(((F_CPU / (16 * BAUD_RATE)) - 1) >> 8);
		UBRR0L = (uint8_t)((F_CPU / (16 * BAUD_RATE)) - 1);
	#endif
	UCSR0B = (1 << RXCIE0) | (1 << RXEN0) | (1 << TXEN0);
	UCSR0C = (1 << UCSZ00) | (1 << UCSZ01);
	
	/* SPI Initialization */
	DDRB |= (1 << MOSI_BIT) | (1 << SCK_BIT) | (1 << SS_BIT) | (7 << PORTB0);
	PORTB |= (1 << MOSI_BIT) | (1 << SCK_BIT) | (1 << SS_BIT);
	SPCR = (1 << SPE) | (1 << MSTR);
	
	/* TWI Initialization */
	TWBR = (uint8_t)(((F_CPU / TWI_FREQ) - 16) / 2);
	TWCR = (1 << TWEN);
	
	/* Timer0 Initialization */
	TCCR0A = (1 << WGM01);
	OCR0A = 0x80;
	TCCR0B = (1 << CS00) | (1 << CS02);
	TIMSK0 = (1 << OCIE0A);
	
	/* Timer1 Initialization */
	TCCR1B = (1 << CS12) | (1 << CS10) | (1 << WGM12);
	OCR1A = 0x400;
	TIMSK1 = (1 << OCIE1A);
	
	/* ADC Initialization */
	ADMUX |= (1 << REFS0) | (1 << REFS1);
	ADCSRA = (1 << ADEN) | (1 << ADPS0) | (1 << ADPS1);
	DIDR0 = 0xFF;
	
	PCICR = (1 << PCIE3);
	PCMSK3 = 0xF0;
}

void MAX_ReadData()
{
	uint8_t i = 0;
	max31855_t data;
	btw32_t *dptr = (btw32_t*)&data;
	PORTB = (PORTB & 0xF8) | MAXADDR;
	PORTB &= ~(1 << SS_BIT);
	for(i = 0; i < 4; i++)
	{
		SPDR = 0xFF;
		while(!(SPSR & (1 << SPIF)));
		dptr->byte[3 - i] = SPDR;
	}
	PORTB |= (1 << SS_BIT);
	
	heater[CH0].tintr = heater[CH1].tintr = (int8_t)data.intt_int;
	if(data.intt_frac * (100.0 / 16.0) >= 50)
		heater[CH0].tintr++;
	
	if(data.oc | data.scg | data.scg)
	{
		heater[CH0].status.couple = heater[CH1].status.couple = dptr->byte[0] & 0x07;
		heater[CH0].tcouple = heater[CH1].tcouple = 0;
	}
	else
	{
		heater[CH0].status.couple = heater[CH1].status.couple = 0;
		heater[CH0].tcouple = heater[CH1].tcouple = ((int16_t)data.tct_int ^ 0x0800) - 0x0800;
		if((data.tct_frac * (100 / 4)) >= 50)
			heater[CH0].tcouple = heater[CH1].tcouple++;
	}
}

int16_t CalculateTemp(uint16_t data, uint8_t ch)
{
	if(data > preset[ch].curve[0].adcdata)
		return 0;
		
	if(data < preset[ch].curve[15].adcdata)
		return 150;
	
	for(uint8_t i = 0; i < 16; i++)
	{
		if(data >= preset[ch].curve[i].adcdata)
		{
			return Approx(preset[ch].curve[i - 1].adcdata, preset[ch].curve[i].adcdata,
					preset[ch].curve[i - 1].temp, preset[ch].curve[i].temp, data);
		}
	}
	return (-1);
}

int16_t TMeasure(uint8_t ch)
{
	uint16_t addata = 0;
	uint16_t avg_data = 0;
	uint8_t i = 0;
	
	ADMUX = (ADMUX & 0xF8) | (ch & 0x01);
	_delay_us(100);
	avg_data = 0;
	for(i = 0; i < 10; i++)
	{
		ADCSRA |= (1 << ADSC);
		while(!(ADCSRA & (1 << ADIF)));
		addata = ADCL;
		addata |= ((uint16_t)ADCH) << 8;
		avg_data += addata;
	}
	addata = avg_data / 10;
	heater[ch].tmeas_raw = addata;
	heater[ch].tmeas = CalculateTemp(addata, ch);
	return (heater[ch].tmeas);
}

uint16_t CurrMeasure(uint8_t ch)
{
	uint16_t addata = 0;
	
	ADMUX = (ADMUX & 0xF8) | (ADC_CUR1 + (ch & 0x01));
	_delay_us(100);
	ADCSRA |= (1 << ADSC);
	while(!(ADCSRA & (1 << ADIF)));
	addata = ADCL;
	addata |= ((uint16_t)ADCH) << 8;
	heater[ch].current = ((float)addata * 2.4);
	return (heater[ch].current);
}

int lcd_putchar(char c, FILE *stream)
{
	if(c >= 0xC0)
		c = cyrillic[c - 0xC0];
	LCD_SendData(c);
	return 0;
}

int uart_putchar(char c, FILE *stream)
{
	cli();
	if(!FIFO_IS_FULL(fifo0))
	{
		FIFO_PUSH(fifo0, c);
		UCSR0B |= (1 << UDRIE0);
	}
	sei();
	return 0;
}

void TransmitPresets()
{
	uint8_t checksum = 0x1F;
	uart_putchar(0x55, NULL);
//	fprintf(&uart_stdout, "BEG");
	uart_putchar(0x45, NULL);
	uart_putchar(0x85, NULL);
	
	for(uint8_t pn = 0; pn < 25; pn++)
	{
		for(uint8_t offs = 0; offs < 13; offs++)
		{
			EEAR = 0x30 + (pn * sizeof(preset_str)) + offs;
			EECR |= (1 << EERE);
			uint8_t data = EEDR;
			uart_putchar(data, NULL);
			checksum += data;
		}
	}
	uart_putchar(checksum, NULL);
	txrequest = 0;
//	fprintf(&uart_stdout, "END");
}

void Transmit()
{
	comdata_str *txdata = (comdata_str*)calloc(1, sizeof(comdata_str));
	txdata->start = 0x55;

	txdata->command = txrequest;
	
	switch((txreq_t)txrequest)
	{
		case REQ_RST:
		case REQ_ACK:
		case REQ_NACK:
			txdata->len = 0;
			break;
			
		case REQ_MAINDATA:
			txdata->len = sizeof(heater);
			memcpy(txdata->data, heater, sizeof(heater));
			break;
		
		case REQ_DEBUGDATA:
			break;
			
		case REQ_PRESETTABLE:
			TransmitPresets();
			free(txdata);
			return;
			
		case REQ_PRESETDATA:
			txdata->len = sizeof(preset);
			memcpy(txdata->data, preset, sizeof(preset));
			break;
	}
	
	//fprintf(&uart_stdout, "BEG");
	
	for(uint8_t i = 0; i < (txdata->len + 3); i++)
	{
		uart_putchar(((uint8_t*)txdata)[i], NULL);
		txdata->checksum += ((uint8_t*)txdata)[i];
	}
	uart_putchar(txdata->checksum, NULL);
	
	//fprintf(&uart_stdout, "END");
	txrequest = 0;
	free(txdata);
}

void ResetMCU(void)
{
	cli();
	WDTCSR |= (1 << WDCE) | (1 << WDE);
	while(1);
}

void SwitchHeating(uint8_t ch, uint8_t onoff)
{
	if(onoff)
	{
		GATEPORT &= ~(1 << (GATE1 + (ch & 0x01)));
		LEDPORT |= (1 << (LED1 + (ch & 0x01)));
		heater[ch].status.heating = 1;
	}
	else
	{
		GATEPORT |= (1 << (GATE1 + (ch & 0x01)));
		LEDPORT &= ~(1 << (LED1 + (ch & 0x01)));
		heater[ch].status.heating = 0;
	}
}

float VoltageMeasure(uint8_t ch)
{
	uint16_t addata = 0;
	float voltage = 0.0;
	ADMUX = (ADMUX & 0xF8) | (ch & 0x01);
	_delay_us(100);
	ADCSRA |= (1 << ADSC);
	while(!(ADCSRA & (1 << ADIF)));
	addata = ADCL;
	addata |= ((uint16_t)ADCH) << 8;
	voltage = (float)addata * 0.0025;
	voltage = (voltage / (0.758 * opamp[ch].gain)) + opamp[ch].shift;
	return voltage;
}

circ_t CircuitDetect(uint8_t ch)
{
	uint8_t gain, shift, drive;
	float voltage;
	circ_t circ;
	
	gain = heater[ch].gain;
	shift = heater[ch].shift;
	drive = heater[ch].drive;
	
	SetDriveVoltage(ch, 0);

	SetInputRange(ch, 0.0, 3.0);
	voltage = VoltageMeasure(ch);
	if(voltage > 3.0)
	{
		circ = CIRC_OPEN;
	}
	else if((voltage > 0.05) && (voltage <= 1.5))
	{
		SetDriveData(ch, 0xFF);
		SwitchDrive(ch, ON);
		_delay_ms(1);
		voltage = VoltageMeasure(ch);
		SetDriveData(ch, drive);
		SwitchDrive(ch, OFF);
		if(voltage < 0.2)
		{
			circ = CIRC_MOSFET;
		}
		else
		{
			circ = CIRC_RES_DIODE;
		}
	}
	else
	{
		circ = CIRC_RES;
	}
	
	SetGainData(ch, gain);
	SetShiftData(ch, shift);
	SetDriveData(ch, drive);
	heater[ch].status.circuit = circ;
	return circ;
}

void UARTDataAvail()
{
	static uint8_t rxcnt;
	uint8_t localcnt = count;
	
	for(uint8_t i = 0; i < localcnt; i++)
	{
		uint8_t rxbyte = rxbuf[i];
		switch(rxcnt)
		{
			case 0:
			if(rxbyte == 0x55)
			{
				//rxdata.start = rxbyte;
				rxdata.checksum = rxbyte;
				rxcnt++;
			}
			break;
			
			case 1:
			if(rxbyte < 100)
			{
				rxdata.len = rxbyte;
				rxdata.checksum += rxbyte;
				rxcnt++;
			}
			else
			{
				rxcnt = 0;
			}
			break;
			
			case 2:
			rxdata.command = rxbyte;
			rxdata.checksum += rxbyte;
			rxcnt++;
			break;
			
			default:
			if(rxcnt < (rxdata.len + 3))
			{
				rxdata.data[rxcnt - 3] = rxbyte;
				rxdata.checksum += rxbyte;
				rxcnt++;
			}
			else
			{
				if(rxbyte == rxdata.checksum)
				{
					ProcessCommand();
				}
				rxcnt = 0;
			}
		}
		count--;
	}
}

int AutoCalibration(uint8_t ch)
{
	uint8_t drive = 0;
	int16_t tstart = 0;
	uint16_t delcnt = 0;
	float vlow = 0.0, vhigh = 0.0;
	
	MAX_ReadData();
	CircuitDetect(ch);	
	
	if(((heater[ch].status.circuit == CIRC_MOSFET) || (heater[ch].status.circuit == CIRC_RES_DIODE))  && (heater[ch].status.couple == 0))
	{
		LCD_SendCmd(LCD_CLR);
		SetInputRange(ch, 0.0, 3.0);
		SetDriveVoltage(ch, 0.0);
		_delay_ms(2);
	
		do {
			MAX_ReadData();
			LCD_SetPos(0, 0);
			fprintf(&lcd_stdout, "K%.1u P%.2u Tm=%.3u -", ch + 1, heater[ch].preset, heater[ch].tmeas);
			LCD_SetPos(0, 1);
			fprintf(&lcd_stdout, "CALIB. Tc=%.3u -", heater[ch].tcouple);
		} while(heater[ch].tcouple > cal_tmin);
	
		tstart = heater[ch].tcouple;
		vhigh = VoltageMeasure(ch) + 0.04;
		
		if(heater[ch].status.circuit == CIRC_MOSFET)
		{
			do {
				SetDriveData(ch, drive);
				SwitchDrive(ch, ON);
				SwitchHeating(ch, ON);
				_delay_ms(1);
				CurrMeasure(ch);
				SwitchHeating(ch, OFF);
				SwitchDrive(ch, OFF);
				drive++;
			} while(heater[ch].current < 1000);
			
			drive--;
			SwitchDrive(ch, ON);
		}

		SwitchHeating(ch, ON);
	
		while(heater[ch].tcouple < (cal_tmax + 2))
		{
			if(CurrMeasure(ch) > CURR_MAX)
				return 0;
			
			if(heater[ch].status.circuit == CIRC_MOSFET)
			{
				if(heater[ch].current > 1500)
				{
					SetDriveData(ch, --drive);
					SwitchDrive(ch, ON);
				}
				
				if(heater[ch].current < 1000)
				{
					SetDriveData(ch, ++drive);
					SwitchDrive(ch, ON);
				}
			}
		
			MAX_ReadData();
			
			if((heater[ch].status.circuit == CIRC_OPEN) || (heater[ch].status.circuit == CIRC_RES) || (heater[ch].status.couple != 0))
			{
				LoadPreset(ch);
				return (-1);
			}
			
			if(++delcnt > 300)
			{
				delcnt = 0;
				if((heater[ch].tcouple - tstart) < 5)
				{
					SwitchHeating(ch, OFF);
					SwitchDrive(ch, OFF);
					LCD_SetPos(0, 0);
					fprintf(&lcd_stdout, "Íåäîñòàòî÷íûé   ");
					LCD_SetPos(0, 1);
					fprintf(&lcd_stdout, "òåïëîâîé êîíòàêò");
					LoadPreset(ch);
					btn_act = 0;
					while(!btn_act);
					return(-1);
				}
				else
				{
					tstart = heater[ch].tcouple;
				}
			}
		
			LCD_SetPos(0, 0);
			fprintf(&lcd_stdout, "%04.2f-%04.2f G=%04.2f", vhigh, vlow, opamp[ch].drive);
			LCD_SetPos(0, 1);
			fprintf(&lcd_stdout, "I=%.4umA Tc=%.3u ", heater[ch].current, heater[ch].tcouple);
		}
	
		SwitchHeating(ch, OFF);
		SwitchDrive(ch, OFF);
		_delay_ms(2);
	
		vlow = VoltageMeasure(ch);
		if(vlow > 0.01)
			vlow -= 0.01;
		SetInputRange(ch, vlow, vhigh);
	
		for(uint8_t temp = cal_tmax; temp >= cal_tmin; temp -= 10)
		{
			while(heater[ch].tcouple >= temp)
			{
				MAX_ReadData();
				LCD_SetPos(0, 0);
				fprintf(&lcd_stdout, "VH=%04.2f Dm=%.3u -", vhigh, heater[ch].tmeas_raw);
				LCD_SetPos(0, 1);
				fprintf(&lcd_stdout, "VL=%04.2f Tc=%.3u -", vlow, heater[ch].tcouple);
			}
			TMeasure(ch);
			preset[ch].curve[temp / 10].temp = temp;
			preset[ch].curve[temp / 10].adcdata = heater[ch].tmeas_raw;
			
			if((heater[ch].status.circuit == CIRC_OPEN) || (heater[ch].status.circuit == CIRC_RES) || (heater[ch].status.couple != 0) )
			{
				LoadPreset(ch);
				return (-1);
			}
		}
	
		for(uint8_t temp = 0; temp < cal_tmin; temp += 10)
		{
			preset[ch].curve[temp / 10].temp = temp;
			preset[ch].curve[temp / 10].adcdata = Approx(preset[ch].curve[cal_tmin / 10].temp, preset[ch].curve[cal_tmax / 10].temp,
				preset[ch].curve[cal_tmin / 10].adcdata, preset[ch].curve[cal_tmax / 10].adcdata, preset[ch].curve[temp / 10].temp);
		}
	
		for(uint8_t temp = (cal_tmax + 10); temp < 160; temp += 10)
		{
			preset[ch].curve[temp / 10].temp = temp;
			preset[ch].curve[temp / 10].adcdata = Approx(preset[ch].curve[cal_tmin / 10].temp, preset[ch].curve[cal_tmax / 10].temp,
				preset[ch].curve[cal_tmin / 10].adcdata, preset[ch].curve[cal_tmax / 10].adcdata, preset[ch].curve[temp / 10].temp);
		}
	
		if(strlen(preset[ch].header) == 0)
		{
			strncpy(preset[ch].header, "DEFAULT", 12);
		}
	
		preset[ch].number = heater[ch].preset;
		preset[ch].gain = heater[ch].gain;
		preset[ch].shift = heater[ch].shift;
		preset[ch].drive = heater[ch].drive;
	
		SavePreset(ch);
	
		LCD_SendCmd(LCD_CLR);
	}
	return 0;
}

void ManualCalibration(uint8_t ch)
{
	uint8_t drive = 0;
	float vlow = 0.0, vhigh = 0.0;
	
	LCD_SendCmd(LCD_CLR);
	LCD_SetPos(0, 0);
	fprintf(&lcd_stdout, "ÐÓ×Í. ÊÀËÈÁÐÎÂÊÀ");
	
	if(heater[ch].status.circuit == CIRC_MOSFET)
	{
		do {
			SetDriveData(ch, drive);
			SwitchDrive(ch, ON);
			SwitchHeating(ch, ON);
			_delay_ms(1);
			CurrMeasure(ch);
			SwitchHeating(ch, OFF);
			SwitchDrive(ch, OFF);
			drive++;
		} while(heater[ch].current < 1000);
		
		drive--;
	}
	
	while(heater[ch].status.calib == CAL_MANUAL)
	{
		if(count)
		{
			UARTDataAvail();
		}
		
		if(txrequest)
		{
			Transmit();
		}
		
		if(heater[ch].status.heating)
		{
			if(heater[ch].status.circuit == CIRC_MOSFET)
				SwitchDrive(ch, ON);

			SwitchHeating(ch, ON);
			_delay_ms(1);
			if(CurrMeasure(ch) > 2000)
			{
				drive--;
				SetDriveData(ch, drive);
				SwitchDrive(ch, ON);
			}
		}
		else
		{
			SwitchHeating(ch, OFF);
			SwitchDrive(ch, OFF);
		}
	}
	heater[ch].status.heating = OFF;
}

void ProcessCommand()
{
	uint8_t ch = ((rxdata.command & 0x80) >> 7) & 0x01;
	rxdata.command &= 0x7F;
	txrequest = REQ_ACK;
	switch(rxdata.command)
	{
		case CMD_RESET:
			ResetMCU();
			break;
		
		case CMD_REQ:
			txrequest = rxdata.data[0];
			break;
		
		case CMD_CHONOFF:
			heater[ch].status.onoff = rxdata.data[0];
			SwitchHeating(ch, OFF);
			SwitchDrive(ch, OFF);
			break;
		
		case CMD_SETTEMP:
			heater[ch].tset = rxdata.data[0];
			break;
		
		case CMD_SETRANGE:
			heater[ch].gain = rxdata.data[0];
			heater[ch].shift = rxdata.data[1];
			SetGainData(ch, rxdata.data[0]);
			SetShiftData(ch, rxdata.data[1]);
			break;
		
		case CMD_SETVDRIVE:
			heater[ch].drive = rxdata.data[0];
			opamp[ch].drive = ((float)heater->drive / 25.76);
			break;

		case CMD_SWPRESET:
			heater[ch].preset = rxdata.data[0];
			LoadPreset(ch);
			SavePrefs();
			break;
		
		case CMD_LOADDATA:
			memcpy((uint8_t*)preset, (uint8_t*)rxdata.data, rxdata.len);
			SavePreset(ch);
			break;
		
		case CMD_HEATING:
			if(heater[ch].status.calib == CAL_MANUAL)
			heater[ch].status.heating = rxdata.data[0];
			break;
		
		case CMD_CALIBRATION:
			heater[ch].status.calib = rxdata.data[0];
			cal_tmin = rxdata.data[1];
			cal_tmax = rxdata.data[2];
		
			if(heater[ch].status.calib == CAL_MANUAL)
				ManualCalibration(ch);
			else if(heater[ch].status.calib == CAL_AUTO)
				AutoCalibration(ch);
			break;
	}
}

void LoadingScreen()
{
	uint8_t c = 0xFF, i = 0, d = 0, btn = 0;
	do
	{
		_delay_ms(20);
		LCD_SetPos(i, 0);
		LCD_SendData(c);
		LCD_SetPos(15 - i, 1);
		LCD_SendData(c);
		if(++i > 15)
		{
			c ^= ~' ';
			i = 0;
			d++;
		}
		btn = ~((BTNPIN >> 4) | 0xF0);
	}
	while(btn || (d < 2));
	LCD_SendCmd(LCD_CLR);
}

int main()
{
	uint8_t ch = CH0;
	uint8_t tmp = 0;
	uint8_t display = DISP_MAIN;
	btn_t button;
	
	menu_str *menu = (menu_str*)calloc(sizeof(menu_str), 1);
	
	memset(heater, 0x00, sizeof(heater));
	memset(opamp,  0x00, sizeof(opamp));
	memset(preset, 0x00, sizeof(preset));

	opamp[CH0].ch = heater[CH0].status.channel = CH0;
	opamp[CH1].ch = heater[CH1].status.channel = CH1;
	
	heater[CH0].tset = heater[CH1].tset = 25;

	stdout = &uart_stdout;
	
	init();
	LCD_Init();
	
	LoadingScreen();

	LoadPrefs();
	LoadPreset(CH0);
	LoadPreset(CH1);
	
	//SwitchPower(ON);
	
	CircuitDetect(CH0);
	CircuitDetect(CH1);
	
	sei();
	
	Transmit();
	
	while(1)
    {
		if(count)
		{
			UARTDataAvail();
		}
		
		if(txrequest)
		{
			Transmit();
		}
		
		if(heater[CH0].status.ocp || heater[CH1].status.ocp)
		{
			LCD_SetPos(0, 0);
			fprintf(&lcd_stdout, "ÇÀÙÈÒÀ ÏÎ ÒÎÊÓ!!");
			LCD_SetPos(0, 1);
			fprintf(&lcd_stdout, "ÍÀÆ.");
			LCD_SendData(0x00);
			fprintf(&lcd_stdout, " ÄËß ÑÁÐÎÑÀ");
			while(((BTNPIN >> 4) | 0xF0) != 0xF7);
			ResetMCU();
		}
		
		if(tick1)
		{
			/* ------------- MEASURING SECTION ----------------- */
			tick1 = 0;
			MAX_ReadData();
			
			tmp = ch;
			for(uint8_t ch = CH0; ch <= CH1; ch++)
			{
				if(CurrMeasure(ch) > CURR_MAX)
				{
					heater[ch].status.onoff = OFF;
				}
				SwitchHeating(ch, OFF);
				SwitchDrive(ch, OFF);
				_delay_ms(1);

				CircuitDetect(ch);
				TMeasure(ch);
					
				if(heater[ch].status.circuit == CIRC_OPEN)
				{
					heater[ch].status.onoff = OFF;
				}
				else if(heater[ch].status.circuit == CIRC_RES)
				{
					if((heater[ch].status.onoff == ON) && (heater[ch].tcouple < heater[ch].tset))
					{
						SwitchHeating(ch, ON);
					}
					else
					{
						SwitchHeating(ch, OFF);
					}
				}
				else
				{
					if((heater[ch].status.onoff == ON) && (heater[ch].tmeas < heater[ch].tset))
					{
						SwitchDrive(ch, ON);
						SwitchHeating(ch, ON);
					}
					else
					{
						SwitchDrive(ch, OFF);
						SwitchHeating(ch, OFF);
					}
				}
			}
			ch = tmp;
		} ////// if(tick1) end
		
		if(tick2)
		{
			/* ------------- DISPLAY SECTION ----------------- */
			tick2 = 0;
			if(display == DISP_MAIN)
			{
				LCD_SetPos(0, 0);
				fprintf(&lcd_stdout, "K%.1u #%.2u  Tï=", ch + 1, heater[ch].preset);
				if(!heater[ch].status.couple)
				{
					fprintf(&lcd_stdout, "%.3d\x01", heater[ch].tcouple);
				}
				else
				{
					fprintf(&lcd_stdout, "--- ");
				}
			
				switch(heater[ch].status.circuit)
				{
					case CIRC_OPEN:
						LCD_SendData(SYM_OPEN);
						break;
					case CIRC_SHORT:
						LCD_SendData(SYM_SHORT);
						break;
					case CIRC_RES:
						LCD_SendData(SYM_RES);
						break;
					case CIRC_MOSFET:
						LCD_SendData(SYM_MOSFET);
						break;
					case CIRC_RES_DIODE:
						LCD_SendData(SYM_DIODE);
						break;
					case CIRC_DIODE:
						break;
				}

				LCD_SetPos(0, 1);
				fprintf(&lcd_stdout, "Tó=%.3u\x01 ", heater[ch].tset);
			
				if((heater[ch].status.circuit == CIRC_OPEN) || (heater[ch].status.circuit == CIRC_SHORT))
				{
					fprintf(&lcd_stdout, "ÎÒÊËÞ×.");
				}
				else if(heater[ch].status.circuit == CIRC_RES)
				{
					fprintf(&lcd_stdout, "I=%4.2fA", ((float)heater[ch].current) / 1000.0);
				}
				else
				{
					fprintf(&lcd_stdout, "Òí=%.3d\x01", heater[ch].tmeas);
				}
			
				if(heater[ch].status.onoff)
				{
					if(heater[ch].status.heating)
					{
						LCD_SendData(0xD9);
					}
					else
					{
						LCD_SendData(0xDA);
					}
				}
				else
				{
					LCD_SendData('-');
				}
			
				if(menu->set == 1)
				{
					if(menu->blink_cnt % 4 == 0)
					{
						if(menu->blink_cnt > 40)
						{
							menu->set = 0;
							menu->blink_cnt = 0;
							SavePrefs();
						}
						LCD_SetPos(3, 1);
						fprintf(&lcd_stdout, "   ");
					}
					menu->blink_cnt++;
				}
				else if(menu->set == 2)
				{
					if(menu->blink_cnt % 4 == 0)
					{
						if(menu->blink_cnt > 40)
						{
							menu->set = 0;
							menu->blink_cnt = 0;
							SavePrefs();
						}
						LCD_SetPos(4, 0);
						fprintf(&lcd_stdout, "  ");
					}
					menu->blink_cnt++;	
				}
			
				if(button.pressed && !button.holded)
				{
					if(++button.holdcnt == 12)
					{
						button.holded = 1;
						btn_act = 1;
					}
				}
			}
			else if(display == DISP_VER)
			{
				LCD_SetPos(0, 0);
				fprintf(&lcd_stdout, "ÓÊÍ-2 09.09.2019");
				LCD_SetPos(0, 1);
				fprintf(&lcd_stdout, "Íàãàåâ Àëåêñàíäð");
			}
			//txrequest = REQ_MAINDATA;
			//Transmit();
		} ////// if(tick2) end
		
		/* ---------------- BUTTON SECTION --------------- */
		if(btn_act)
		{
			_delay_ms(20);
			btn_act = 0;
			button.code = ~((BTNPIN >> 4) | 0xF0);
			if((button.code != 0x00) && (!button.holded)) // Button down event
			{
				if(display == DISP_MAIN)
				{
					button.pressed = 1;
					button.released = 0;
					button.prev_code = button.code;
					switch(button.code)
					{
						case 0x01:
							menu->blink_cnt = 1;
							if(menu->set == 1)
							{
								heater[ch].tset -= (heater[ch].tset != 0);
							}
							else if(menu->set == 2)
							{
								heater[ch].preset -= (heater[ch].preset != 0);
								LoadPreset(ch);
							}
							else
							{
								ch = CH0;
							}
							break;
						
						case 0x02:
							menu->blink_cnt = 1;
							if(menu->set == 1)
							{
								heater[ch].tset += (heater[ch].tset != 150);
							}
							else if(menu->set == 2)
							{
								heater[ch].preset += (heater[ch].preset != 24);
								LoadPreset(ch);
							}
							else
							{
								ch = CH1;
							}
							break;
							
						case 0x03:
							LCD_SendCmd(LCD_CLR);
							display = DISP_VER;
							break;
							
						case 0x04:
							menu->set = (menu->set + 1) % 3;
							if(menu->set == 0)
								SavePrefs();
							menu->blink_cnt = 0;
							break;
					} ////// switch(btn_code) end
				} ////// if(display == ON) end
			}
			else if(button.code == 0) // Button up event
			{
				if(!button.holded)
				{
					display = DISP_MAIN;
					if(button.prev_code == 0x08)
					{
						heater[ch].status.onoff ^= 1;
						SwitchDrive(ch, OFF);
						SwitchHeating(ch, OFF);
					}
				}
				
				button.pressed = 0;
				button.released = 1;
				button.holded = 0;
				button.holdcnt = 0;
			}
			else // Button hold event
			{
				switch(button.code)
				{
					case 0x01:
					case 0x02:
						btn_act = 1;
						button.holded = 0;
						button.holdcnt--;
						break;
						
					case 0x04:
						menu->set = 0;
						AutoCalibration(ch);
						button.pressed = 0;
						button.holded = 0;
						button.holdcnt = 0;
						break;
						
					case 0x08:
						button.prev_code = 0;
						display = OFF;
						LCD_SendCmd(LCD_CLR);
						//btn_hold = 0;
						break;
				}
			}
		} ////// if(btn_act) end
	} ////// while(1) end
} ////// main() end