Index: firmware/FSC/src/FSC.c
===================================================================
--- firmware/FSC/src/FSC.c	(revision 17633)
+++ firmware/FSC/src/FSC.c	(revision 17634)
@@ -1,1090 +1,129 @@
-//-----------------------------------------------------------------------------
 #include "typedefs.h"
-#include "application.h"
+#include "application.h"    // <-- global Registers
+
 #include "spi_master.h"
+#include "timer.h"
+#include "atmega_adc.h"
 #include "ad7719_adc.h"
-#include "atmega_adc.h"    
-#include "usart.h"
+#include "w5100_spi_interface.h"
+
 #include "macros.h"
-#include "interpol.h"
-//#include "w5100_spi_interface.h"
+#include "muxer_fsc.h"
+
 #include <avr/interrupt.h>
 #include <avr/wdt.h>
 #include <stdlib.h>
-//-----------------------------------------------------------------------------
-// definition of some functions:
-// these function are implemented in this file, this is not doog coding style.
-// sooner or later, they will be moved into more apropriate files.
-U08	increase_adc (U08 channel);
-U08	increase_ad7719 (U08 channel);
-void Set_V_Muxer (U08 channel);
-void Set_T_Muxer(U08 channel);
-void talk(void);// never used up to now.
-void ad7719_output(U08 channel, U32 data);
-void adc_output(U08 channel, U08 data);
-void adc_output_all();
-void parse(); //doesn't do anything at the moment
-void check_if_measured_all() ;
-void print_ad7719_nicely();
-void print_adc_nicely();
-void print_temp_nicely();
-// end of function definition:
-//-----------------------------------------------------------------------------
 
-// MAIN WORKFLOW GLOBAL VARIABLES
-	bool verbose;
-	bool heartbeat_enable;
 
-// USART global variables
-	U08 usart_rx_buffer[USART_RX_BUFFER_SIZE];
-	U08 usart_tx_buffer[USART_TX_BUFFER_SIZE];
-	U08 usart_received_chars;
-	U08 usart_rx_buffer_index = 0;
-	U08 usart_tx_buffer_index = 0;
-  	U08 usart_last_char; 					// last received char
-
-// USART FLAGS
-	bool usart_tx_buffer_overflow = false;	// true if usart_tx_buffer was full.
-	bool usart_rx_ready = false;			// EOL was received, parser needs to be called
-	
-// TIMER global variable
-	volatile U32 local_ms = 0;
-
-// AD7719 global variables
-	#define TEMP_CHANNELS 64
-	#define CHANNEL_BITMAP 8
-	#define AD7719_READINGS_UNTIL_SETTLED 3 // bei3:480ms
-	U32 ad7719_values[TEMP_CHANNELS];
-	U08 ad7719_enables[CHANNEL_BITMAP];
-	U08 ad7719_channels_ready[CHANNEL_BITMAP];
-	U08 ad7719_readings_since_last_muxing = 0;
-	U08 ad7719_current_channel = 0;
-	U32 ad7719_current_reading = 0;
-	bool ad7719_measured_all = false;
-	
-// ATMEGA ADC global variables
-	#define V_CHANNELS 40
-	#define I_CHANNELS 40
-	#define H_CHANNELS 4
-	#define V_BITMAP 5
-	#define I_BITMAP 5
-	#define H_BITMAP 1
-	#define ADC_READINGS_UNTIL_SETTLED 1
-	U08 adc_values[V_CHANNELS + I_CHANNELS + H_CHANNELS]; // stores measured voltage in steps of 16mV
-	U08 adc_enables[V_BITMAP + I_BITMAP + H_BITMAP];
-	U08 adc_channels_ready[V_BITMAP + I_BITMAP + H_BITMAP];
-	U08 adc_readings_since_last_muxing = 0;
-	U08 adc_current_channel = 0;
-	U08 adc_current_reading = 0;
-	bool adc_measured_all = false;
-
-	bool once_told_you = true;
-	bool debug_mode = false;
-
-//-----------------------------------------------------------------------------
-//   M A I N    ---   M A I N    ---   M A I N    ---   M A I N    ---  M A I N    
-//-----------------------------------------------------------------------------
 int main(void)
 {
-	app_init();		  // Setup: Watchdog and I/Os
-	usart_init();		// Initialize serial interface   
-	spi_init(); 		// Initialize SPI interface as master
-	ad7719_init(); 		// Initialize AD7719 ADC as SPI slave 
-	atmega_adc_init();
+    U08 highbyte;
+    U08 lowbyte;
+    U16 eth_red_bytes;
+    U08 rc;
 
-// TIMER2 is used as local clock:
-// configure timer 2
-	TCCR2 = (1<<WGM21); // CTC Modus
-	TCCR2 |= (1<<CS21) | (1<<CS20); // Prescaler 64 --> counts up every 8us
-	OCR2 = 125-1; 					// --> output compare interrupt occurs every 125 x 8us = 1ms
-	// Compare Interrupt erlauben
-	TIMSK |= (1<<OCIE2);
-
-  //  Enable interrupts
-  sei();              
-
-  PORTB &= ~(1<<PB2);
-  
-ad7719_enables[0]=0x00;
-ad7719_enables[1]=0x00;
-ad7719_enables[2]=0x00;
-ad7719_enables[3]=0x00;
-ad7719_enables[4]=0x00;
-ad7719_enables[5]=0x00;
-ad7719_enables[6]=0x00;
-ad7719_enables[7]=0x00;  
-for ( U08 i=0; i<CHANNEL_BITMAP; ++i ) {
-	ad7719_channels_ready[i]=0;
-}
-ad7719_current_channel = increase_ad7719 (ad7719_current_channel);
-
-for ( U08 i=0; i<V_BITMAP + I_BITMAP; ++i ) {
-	adc_enables[i]=0xFF;
-	adc_channels_ready[i]=0;
-}
-	adc_enables[V_BITMAP + I_BITMAP + H_BITMAP -1] = 0x0F;
-	adc_channels_ready[V_BITMAP + I_BITMAP + H_BITMAP -1]=0;
-
-	static U08 welcome[]="\n\nwelcome to FACT FSC commandline interface v0.4\nDN 17.03.2011\nready?";
-	usart_write_str(welcome);
+    gReg.ad7719_measured_all = false;
+    gReg.adc_measured_all = false;
+    for ( U08 i=0; i < (RESISTANCE_REGS); ++i ) {
+        gReg.ad7719_enables[i]=0xFF;
+        gReg.ad7719_channels_ready[i]=0x00;
+    }
+    for ( U08 i=0; i < (VOLTAGE_REGS); ++i ) {
+        if (i < (VOLTAGE_REGS)-1) {
+            gReg.adc_enables[i]=0xFF;
+        }
+        else {
+            gReg.adc_enables[i]=0x0F;
+        }
+        gReg.adc_channels_ready[i]=0;
+    }
 
 
-//MAIN LOOP
-while (1)
-{
+    app_init();         // Setup: Watchdog and I/Os
+    spi_init();         // Initialize SPI interface as master
+    timer_init();       // set up TIMER2: TIMER2_COMP interrupt occurs every 1ms
+    atmega_adc_init();
 
-	//IF one of the ADC measured all channels, we wanted to know.
-	check_if_measured_all();
-	
-	if (ad7719_measured_all && adc_measured_all && !once_told_you)
-	{
-		adc_output_all();
-		once_told_you = true;
-	}
-//----------------------------------------------------------------------------
+    w5100_reset();
+    w5100_init();
 
-	if (heartbeat_enable) PORTB ^= (1<<PB3); // toggle Out2_spare --> heartbeat
-//----------------------------------------------------------------------------
-	//IF we need to send away one byte, and ready to send
+    ad7719_init();
+    sei();
 
-	if ( (usart_tx_buffer_index > 0) && (UCSRA & (1<<UDRE)) ) { 
-		UDR = usart_tx_buffer[0];
-		// THis is shit
-		for (U08 i=0 ; i < USART_TX_BUFFER_SIZE; ++i) {
-			usart_tx_buffer[i] = usart_tx_buffer[i+1];
-		}
-		usart_tx_buffer_index--;
-	}
-//----------------------------------------------------------------------------
+    //MAIN LOOP
+    while (1)
+    {
+        // checks if socket is okay and resets in case of problem the W5100 
+        rc=w5100_caretaker();
+        if ( rc != 0x17 && rc != 0x14)  
+        {
+            // something is not okay with the ethernet ... 
+            // will be reset in the next revolution.. but maybe we want to do more...
+        }
+        // this if should check every 25ms if we have any data on the W5100
+        if ( (gVolReg.time_ms % W5100_INPUT_CHECK_TIME == 0) && (w5100_ready) ) {
+            if ( (eth_red_bytes = get_S0_RX_RSR()) != 0) {
+                for (U08 rep=0; rep<1; ) {
+                    if (eth_red_bytes == get_S0_RX_RSR() ) {
+                        rep++;
+                    }
+                    else {
+                        eth_red_bytes =get_S0_RX_RSR();
+                    }
+                }
+                //parse_w5300_incoming( w5100_get_RX(ETH_READ_BUFFER_SIZE, true) );
+            }
+        }
+        //----------------------------------------------------------------------------
+        if (check_if_measured_all()) {
+                write_status_via_eth();
+                reset_resistance_done();
+                reset_voltage_done();
+                reset_voltage_values();
+        }
 
-	//IF we just received one byte, and there is enough space in the RX_buffer
-	if ( (UCSRA & (1<<RXC)) && (usart_rx_buffer_index < USART_RX_BUFFER_SIZE) ){
-		usart_last_char = UDR;
-		if (usart_last_char == '\n'){ // if EOL was received
-			usart_rx_ready = true;
-		}else {
-		usart_rx_buffer[usart_rx_buffer_index] = usart_last_char;
-		usart_rx_buffer_index++;
-		}
-		// here is still something strange .... better send an enter automatically
-	} else if (UCSRA & (1<<RXC)) { // if there is no scace in the buffer; read anyway.
-		usart_last_char = UDR;
-		usart_rx_buffer_index =0;
-	}
-//----------------------------------------------------------------------------
+        //IF ATmega internal ADC did finish a conversion --every 200us
+        if ( (ADCSRA & (1<<ADIF)) && !gReg.adc_measured_all) {
+            lowbyte = ADCL;
+            highbyte = ADCH;
+            ADCSRA |= 1<<ADIF;
+            gReg.adc_current_reading = ((U16)highbyte<<8) | ((U16)lowbyte);
+            if (gReg.adc_readings_since_last_muxing == ADC_READINGS_UNTIL_SETTLED + ADC_READINGS_UNTIL_MEAN - 1) {
+                gReg.adc_values[gReg.adc_current_channel] += gReg.adc_current_reading;
+                gReg.adc_channels_ready[gReg.adc_current_channel/8] |= (1<<(gReg.adc_current_channel%8));
+                gReg.adc_current_channel = increase_adc(gReg.adc_current_channel);
+                Set_V_Muxer(gReg.adc_current_channel);
+                gReg.adc_readings_since_last_muxing = 0;
+                _delay_ms(10); // this is a muxer delay
+            }
+            else if (gReg.adc_readings_since_last_muxing >= ADC_READINGS_UNTIL_SETTLED-1) {
+                gReg.adc_values[gReg.adc_current_channel] += gReg.adc_current_reading;
+                ++gReg.adc_readings_since_last_muxing;
+            }
+            else  {
+                ++gReg.adc_readings_since_last_muxing;
+            }
+        }
+        //----------------------------------------------------------------------------
 
-	//IF USART DOR bit is set, PC is sending data to fast!!!
-	if ( UCSRA & (1<<DOR) ){
-		// flush TX_buffer and write warning message in
-		// maybe even switch off every measurement. ?
-	}
-//----------------------------------------------------------------------------
+        //IF AD7719 ADC just finished a conversion -- every 60ms
+        if (AD7719_IS_READY() && !gReg.ad7719_measured_all) {
+            gReg.ad7719_current_reading = read_adc(); // --takes at 4MHz SCLK speed about 6us
+            // AD7719 is only read out if settled. saves time.	
+            if (gReg.ad7719_readings_since_last_muxing == AD7719_READINGS_UNTIL_SETTLED-1) {
+                gReg.ad7719_values[gReg.ad7719_current_channel] = gReg.ad7719_current_reading;
+                gReg.ad7719_readings_since_last_muxing=0;
+                // now prepare the data to be send away via USART.
+                // note that this channel is ready, now and 
+                // proceed to the next enabled channel.
+                gReg.ad7719_channels_ready[gReg.ad7719_current_channel/8] |= (1<<(gReg.ad7719_current_channel%8));
+                gReg.ad7719_current_channel = increase_ad7719(gReg.ad7719_current_channel);
+                Set_T_Muxer(gReg.ad7719_current_channel);
+            } 
+            else { // the AD7719 did not settle yet, we discard the reading
+                ++gReg.ad7719_readings_since_last_muxing;
+            }
+        }
 
-	//IF TX_BUFFER was overrun.	
-	if (usart_tx_buffer_overflow) {
-		// flash TX_buffer and write warning message in
-		// maybe even switch off every measurement. ?
-		//
-		// this should only happen, in verbose mode and with low baudrates.
-	}
-//----------------------------------------------------------------------------
-	
-	//IF one command was received. 
-	//	-It is not allowed to send more than one command between two '\n'
-	if (usart_rx_ready){ 
-		parse();
-		usart_rx_buffer_index = 0;
-		usart_rx_ready = false;
-	}
-//----------------------------------------------------------------------------
-
-	//IF ATmega internal ADC did finish a conversion --every 200us
-	if ( (ADCSRA & (1<<ADIF)) && !adc_measured_all) {
-		adc_current_reading = ADCH;
-		if (adc_readings_since_last_muxing == ADC_READINGS_UNTIL_SETTLED) {
-			adc_values[adc_current_channel] = adc_current_reading;
-			adc_readings_since_last_muxing=0;
-			// note that this channel is ready, now and 
-			//adc_output(adc_current_channel, adc_current_reading);
-			// proceed to the next enabled channel.
-			adc_channels_ready[adc_current_channel/8] |= (1<<(adc_current_channel%8));
-			adc_current_channel = increase_adc (adc_current_channel);
-			Set_V_Muxer(adc_current_channel);
-			_delay_ms(10);
-		} else { // the ADC did not settle yet, we discard the reading
-			++adc_readings_since_last_muxing;
-			// current reading is not used for anything else
-		}
-	}
-//----------------------------------------------------------------------------
-
-	//IF AD7719 ADC just finished a conversion -- every 60ms
-	
-	if (AD7719_IS_READY() && !ad7719_measured_all) {
-			ad7719_current_reading = read_adc(); // --takes at 4MHz SCLK speed about 6us
-		// AD7719 is only read out if settled. saves time.	
-		if (ad7719_readings_since_last_muxing == AD7719_READINGS_UNTIL_SETTLED) {
-			ad7719_values[ad7719_current_channel] = ad7719_current_reading;
-			ad7719_readings_since_last_muxing=0;
-			if (debug_mode) {
-				usart_write_U32_hex(ad7719_current_reading);
-				usart_write_char('\n');
-				usart_write_char('\n');
-			}
-			// now prepare the data to be send away via USART.
-			//ad7719_output(ad7719_current_channel, ad7719_current_reading);
-			// note that this channel is ready, now and 
-			// proceed to the next enabled channel.
-			ad7719_channels_ready[ad7719_current_channel/8] |= (1<<(ad7719_current_channel%8));
-			ad7719_current_channel = increase_ad7719 (ad7719_current_channel);
-			Set_T_Muxer(ad7719_current_channel);
-		} else { // the AD7719 did not settle yet, we discard the reading
-			++ad7719_readings_since_last_muxing;
-			if (debug_mode) {
-				usart_write_U32_hex(ad7719_current_reading);
-				usart_write_char('\n'); 
-			}
-
-			// current reading is not used for anything else
-		}
-	}
-
-//----------------------------------------------------------------------------
-/*
-	if (verbose == true)
-		// talk() was just defined so the 
-		// code is not at this place ... look down.
-		talk();
-*/
-
-} // end of MAIN LOOP
-//-----------------------------------------------------------------------------
-//    E N D     E N D     E N D     E N D     E N D     E N D     E N D     
-//-----------------------------------------------------------------------------
-
-
-
-float resistance;
-
-U08 SA_mux_val = 0x00;
-U08 SB_mux_val = 0x00;
-
-//U08 counter = 0;
-U08 Res_or_Volt = 0x00;
-
-
-while (TRUE)
-	 {
-
-
-  ++Res_or_Volt;
-  if (Res_or_Volt <= 64){
-
-
-		// if USART data arrives. i.e. data via USB
-		// the usart_rx_ready flag is set TRUE
-		// now process the incoming data which is stored in 
-		// U08 usart_rx_buffer[USART_RX_BUFFER_SIZE]
-		// and tell the USART interface, it may receive new data
-		// by setting the usart_rx_ready flag FALSE again
-		++SA_mux_val;
-		if (Res_or_Volt == 1) SB_mux_val = 16;
-		else if (SA_mux_val == 64) SA_mux_val = 32;
-		else if (SA_mux_val == 16) SA_mux_val = 48;
-		else if (SA_mux_val == 32) SA_mux_val = 0;
-		PORTA = (SA_mux_val & 0x3F); 
-				
-//		usart_write_str((pU08)"SA:");
-		usart_write_U08(SA_mux_val,2);
-		usart_write_str((pU08)" Sensor:");
-		usart_write_U08((SA_mux_val % 8)+1,2);
-		usart_write_str((pU08)" an Temperatur_");
-		switch (SA_mux_val / 8)
-		{
-			case 0: usart_write_str((pU08)"C");
-			break;
-			case 1: usart_write_str((pU08)"D");
-			break;
-			case 2: usart_write_str((pU08)"A");
-			break;
-			case 3: usart_write_str((pU08)"B");
-			break;
-			case 4: usart_write_str((pU08)"G");
-			break;
-			case 5: usart_write_str((pU08)"H");
-			break;
-			case 6: usart_write_str((pU08)"E");
-			break;
-			case 7: usart_write_str((pU08)"F");
-			break;
-			default: usart_write_str((pU08)"alarm!");
-			break;
-		}
-//		usart_write_str((pU08)"\n");
-		usart_write_str((pU08)"  ");
-
-
-		startconv(0);
-
-	
-		while (!AD7719_IS_READY())
-		{
-		// just wait until ADC is redy -- really bad code here!
-		}	    			
- 		
-		resistance = getresistance();
-							//Start a new A/D Conversion
-    	//temp = 	readandsendtemp();
-		//adcword = getadc();
-		
-		//temperature = gettemp();
-		usart_write_str((pU08)"R:");
-		usart_write_float(resistance,3,4);
-		usart_write_str((pU08)"kOhm ");
-		
-		//_delay_ms(200);
-
-		startconv(0);
-
-		while (!AD7719_IS_READY())
-		{
-		// just wait until ADC is redy -- really bad code here!
-		}	    			
-   		//Start a new A/D Conversion
-    	//temp = 	readandsendtemp();
-		//adcword = getadc();
-		resistance = getresistance();
-		//temperature = gettemp();
-		usart_write_str((pU08)"R:");
-		usart_write_float(resistance,3,4);
-		usart_write_str((pU08)"kOhm ");			
-
-//usart_write_str((pU08)"\n");
-switch (SA_mux_val)
-		{
-			case 7: usart_write_str((pU08)"\n\n");
-			break;
-			case 15: usart_write_str((pU08)"\n\n");
-			break;
-			case 23: usart_write_str((pU08)"\n\n");
-			break;
-			case 31: usart_write_str((pU08)"\n\n");
-			break;
-			case 39: usart_write_str((pU08)"\n\n");
-			break;
-			case 47: usart_write_str((pU08)"\n\n");
-			break;
-			case 55: usart_write_str((pU08)"\n\n");
-			break;
-			case 63: usart_write_str((pU08)"\n\n");
-			break;
-			default: usart_write_str((pU08)"\n");
-			break; 
-		}
-SB_mux_val = 0;
-}
-else if (Res_or_Volt == 148) Res_or_Volt = 0;
-else {
-
-
-		++SB_mux_val;		
-		if (SB_mux_val == 84) SB_mux_val = 0;
-		else if (SB_mux_val == 74) SB_mux_val = 82;
-		else if (SB_mux_val == 82) SB_mux_val = 72;
-		else if (SB_mux_val == 72) SB_mux_val = 74;
-		else if (SB_mux_val == 48) SB_mux_val = 64;
-		else if (SB_mux_val == 64) SB_mux_val = 32;
-		else if (SB_mux_val == 32) SB_mux_val = 48;
-		PORTC = (SB_mux_val & 0x7F);
- 
-
-
-
-usart_write_str((pU08)"8bit-ADC: ");
-
-if (SB_mux_val < 64)
-{
-		switch (SB_mux_val / 16)
-		{
-			case 0: usart_write_str((pU08)"voltage_A: ");
-			break;
-			case 1: usart_write_str((pU08)"voltage_B: ");
-			break;
-			case 2: usart_write_str((pU08)"voltage_D: ");
-			break;
-			case 3: usart_write_str((pU08)"voltage_C: ");
-			break;
-		}
-
-		if (SB_mux_val % 2 == 0) {
-			usart_write_str((pU08)"U");
-			usart_write_U08( (SB_mux_val%16)/2 , 1 );
-		} else {
-			usart_write_str((pU08)"I");
-			usart_write_U08( ((SB_mux_val%16)-1)/2 , 1 );
-		}
-
-
-} else {
-
-
-	if (SB_mux_val < 72)  {
-		usart_write_str((pU08)"voltage_E: ");
-		if (SB_mux_val % 2 == 0) {
-			usart_write_str((pU08)"U");
-			usart_write_U08( (SB_mux_val%8)/2 , 1 );
-		} else {
-			usart_write_str((pU08)"I");
-			usart_write_U08( ((SB_mux_val%8)-1)/2 , 1 );
-		}
-
-	}
-else if (SB_mux_val == 72) usart_write_str((pU08)"humidity_A: H0");
-else if (SB_mux_val == 73) usart_write_str((pU08)"humidity_A: H1");
-
-else if (SB_mux_val < 82) {
-		usart_write_str((pU08)"voltage_F: ");
-		if (SB_mux_val % 2 == 0) {
-			usart_write_str((pU08)"U");
-			usart_write_U08( ((SB_mux_val-2)%8)/2 , 1 );
-		} else {
-			usart_write_str((pU08)"I");
-			usart_write_U08( (((SB_mux_val-2)%8)-1)/2 , 1 );
-		}
-
-	}
-else if (SB_mux_val == 82) usart_write_str((pU08)"humidity_B: H0");
-else if (SB_mux_val == 83) usart_write_str((pU08)"humidity_B: H1");
-}
-
-for (U08 counter = 0; counter < 1; ++counter) {
-	while (ADCSRA & (1<<ADSC) );    // wait until internal ADC is ready
-	float voltage;
-	voltage = ( (float)ADCH ) / 256 * 4.096;
-	usart_write_str((pU08)" ");
-	usart_write_float(voltage,3,4);
-
-
-}
-//usart_write_str((pU08)"\n");
-
-switch (SB_mux_val)
-		{
-			case 15: usart_write_str((pU08)"\n\n");
-			break;
-			case 31: usart_write_str((pU08)"\n\n");
-			break;
-			case 47: usart_write_str((pU08)"\n\n");
-			break;
-			case 63: usart_write_str((pU08)"\n\n");
-			break;
-			case 71: usart_write_str((pU08)"\n\n");
-			break;
-			case 73: usart_write_str((pU08)"\n\n");
-			break;
-			case 81: usart_write_str((pU08)"\n\n");
-			break;
-			case 83: usart_write_str((pU08)"\n\n");
-			break;
-			default: usart_write_str((pU08)"\n");
-			break; 
-		}
-
-SA_mux_val = 15;
-}		
-	/*	
-		if ( usart_rx_ready == TRUE )
-		{
-			//understand what it means and react
-			
-			switch (usart_rx_buffer[0])
-			{
-				
-				case 'h':
-				{
-					// toggle the heartbeat mode on or off.
-					heartbeat_enable = !heartbeat_enable;
-					break;
-				}
-				case 'a':
-				{
-					// conduct adc - AD7719 SPI interface test
-					
-					break;
-				}
-				case 'e':
-				{
-					// conduct ethernet module SPI interface test
-					strtol((char*) usart_rx_buffer+1, NULL, 0);
-					break;
-				}
-
-				default:
-				{
-					usart_write_str((pU08)"? you wrote: ");
-					usart_write_str((pU08)usart_rx_buffer);
-					usart_write_str((pU08)"\n");
-					break;
-				}
-			}
-			
-			heartbeat_enable = !heartbeat_enable;
-			usart_rx_ready = FALSE;
-		}
-*/
-// das ist ein paar schritte zu früh.
-// erstmal müssen die interfaces getestet werden.
-/*
-
-		for (U08 i = 0; i<16; i++)
-	  	{ 
-			
-	   		if((~PIND) & 0x08)  // PD4 is #ADC_RDY input. Inverted logic! if PD4=0 this evaluates to true					
-	    	{		
-				PORTA = (PORTA & 0xF0) | ((i) & 0x0F); 	// switch muxer
-		   		startconv();							//Start a new A/D Conversion
-		    	//temp = 	readandsendtemp();
-				//adcword = getadc();
-				//resistance = getresistance();
-				temperature = gettemp();
-				usart_write_float(temperature,2,4);
-				usart_write_str((pU08)"\t");
-
-			} // end of if adc ready
-			else
-			{
-			i--;
-			}
-		} // end of for loop over 16 channels
-		usart_write_crlf();
-
-*/
-
- 	}	// end of infinite while loop
-} // end of main()
-
-
-ISR (TIMER2_COMP_vect)
-{
- ++local_ms;
-}
-
-
-U08	increase_adc (U08 channel){
-bool valid_ch_found = false;
-	while (!valid_ch_found){
-	
-		// just increase 'channel' or turnover to zero.
-		++channel;
-		if (channel == V_CHANNELS + I_CHANNELS + H_CHANNELS)
-			channel = 0;
-	
-		// check if this channel is enabled in the bitmap
-		if (adc_enables[channel/8] & (1<<channel%8))
-			valid_ch_found = true;
-	} // end of while loop
-	return channel;
-} // end if increase_adc;
-
-U08	increase_ad7719 (U08 channel){
-bool valid_ch_found = false;
-	while (!valid_ch_found){
-	
-		// just increase 'channel' or turnover to zero.
-		++channel;
-		if (channel == TEMP_CHANNELS)
-			channel = 0;
-	
-		// check if this channel is enabled in the bitmap
-		if (ad7719_enables[channel/8] & (1<<channel%8))
-			valid_ch_found = true;
-	} // end of while loop
-	return channel;
-} // end if increase_adc;
-
-
-// Sets voltage Muxer to current channel
-// this is a Muxing, and therefor the adc might need some time to settle.
-// Since there are:
-//	- 40 voltage monitor channels
-// 	- 40 current monitor channels
-// 	- 4 humidity monitor channels
-// the muxer is set as follows.
-// channel 00..39 --> looking at the voltage channels
-// channel 40..79 --> looking at the current channels
-// channel 80..83 --> looking at the humidities
-void Set_V_Muxer (U08 channel){
-U08 SB = 0;
-	// voltages
-	if (channel < 40) {
-		if (channel < 36)
-			SB = channel*2;
-		else
-			SB = (channel+1)*2;
-	}
-	// currents
-	else if (channel < 80) {
-		channel -= 40;
-		if (channel < 36)
-			SB = channel*2+1;
-		else
-			SB = (channel+1)*2+1;
-	}
-	// humidities
-	else if (channel < 84) {
-		channel -= 80;
-		switch (channel) {
-			case 0:
-				SB = 0x48; //0100.1000
-				break;
-			case 1:
-				SB = 0x49; //0100.1001
-				break;
-			case 2:
-				SB = 0x58; //0101.0010
-				break;
-			case 3:
-				SB = 0x58; //0101.0011
-				break;
-		} // end of switch-case
-	} // end of if (channel < some_number)
-
-	PORTC = (PORTC & 0x80) | (0x7F & SB); // Here the muxer is switched.
-}
-
-void Set_T_Muxer(U08 channel) {
-U08 SA = 0x00;
-
-	switch (channel/16) {
-		case 0:
-			SA |= 1<<4; // 0001.0000
-			break;
-		case 1:
-			break;		// 0000.0000
-		case 2:
-			SA |= (1<<4)|(1<<5); // 0011.0000
-			break;
-		case 3:
-			SA |= 1<<5;  // 0010.0000
-			break;
-	}
-	
-	SA =  SA | (channel%16);
-	
-	PORTA = (PORTA & 0xC0) | (0x3F & SA); // Here the muxer is switched.
-}
-
-void talk(void){
-
-/*
-// makes no sense to declare the 'new_measurement' vars here
-// but maybe the whole function will be deleted, anyway ...
-// I'm thinking about it.
-bool ad7719_new_measurement;
-bool atmega_adc_new_measurement;
-	if (verbose == true) { 
-		// somebody wants to read every new measured value, even if it is trash!
-			// do not actually send away data !
-			// just prepare the data to be send away.
-		if ( ad7719_new_measurement  == true ) {
-			add_str_to_output_stream("ad7719: reading:");
-			add_dec_to_output_stream(reading_since_last_muxer_switch,1);
-			add_str_to_output_stream(" temperature channel:");
-			add_dec_to_output_stream(current_temperature_channel,2);
-			add_str_to_output_stream(" = ");
-			add_float_to_output_stream(current_ad7719_value,4,3);
-			add_str_to_output_stream("\n");
-		}
-		if (atmega_adc_new_measurement == true) {
-			add_str_to_output_stream("atmega_adc: reading:");
-			add_dec_to_output_stream(reading_since_last_muxer_switch,1);
-			add_str_to_output_stream(" voltage channel:");
-			add_dec_to_output_stream(current_voltage_channel,2);
-			add_str_to_output_stream(" = ");
-			add_float_to_output_stream(current_atmega_adc_value,4,3);
-			add_str_to_output_stream("\n");
-		}
-	} // end of: if verbose
-*/
-} // end of talk()
-
-// this function generates some output.
-void ad7719_output(U08 channel, U32 data) {
-float value = 0;
-	usart_write_str((pU08)"R:"); //R for resistance
-	usart_write_char('A'+channel/8); // Letters A,B,C,D,E,F,G,H
-	//usart_write_char(' '); 
-	usart_write_U08(channel%8+1,1); // Numbers 1...8
-	usart_write_char(':'); 
-	
-
-	value = (6.25 * data) / ((U32)1 << 25);
-	usart_write_float(value, 3,6);
-	//usart_write_U32_hex(data); //data
-
-
-}
-
-void adc_output(U08 channel, U08 data) {
-
-//	if (channel < 40) 
-//		usart_write_str((pU08)"V:"); 
-//	else if (channel < 80)
-//		usart_write_str((pU08)"I:"); 
-//	else if (channel < 84)
-//		usart_write_str((pU08)"H:"); 
-
-	if (channel <80)
-	{
-		switch ((channel%40)/4) {
-			case 0:
-			case 1:
-				usart_write_char('A'); 
-			break;
-			case 2:
-			case 3:
-				usart_write_char('B');
-				break;
-			case 4:
-			case 5:
-				usart_write_char('C'); 
-				break;
-			case 6:
-			case 7:
-				usart_write_char('D'); 
-				break;
-			case 8:
-				usart_write_char('E');
-				break;
-			case 9:
-				usart_write_char('F');
-				break;
-			default:
-				usart_write_char('?');
-				break;
-			}
-	}
-	else // channel 80..83
-	{
-		usart_write_char('H');
-	}
-	//usart_write_char(' '); 
-	
-	if ( (channel%40)/4 == 9)
-		usart_write_U08((channel)%4+1,1); // Numbers 1...4
-	else
-		usart_write_U08((channel)%8+1,1); // Numbers 1...8
-	
-	
-	//usart_write_U08(channel,2); // Numbers 1...8
-	usart_write_char(':'); 
-	usart_write_U16((U16)data*16, 4); //data
-}
-
-
-void adc_output_all() {
-	print_adc_nicely();
-	print_ad7719_nicely();
-}
-
-
-// this method parses the data, 
-// which came in via USART
-// later it might as well parse the data from ethernet.
-void parse() {
-U08 command = usart_rx_buffer[0];
-// look at first byte
-// I hope, I can manage to use one byte commands
-	usart_rx_buffer[USART_RX_BUFFER_SIZE-1] = 0;
-	usart_write_str((pU08)"got:");
-	usart_write_str(usart_rx_buffer);
-	
-	
-
-	switch (command) {
-		case 'E': 	// AD7719 enable bitmaps may be set
-		usart_write_str((pU08)"\n set enable bits of AD7719 Port ");
-			if ((usart_rx_buffer_index>=5) && 
-			(usart_rx_buffer[2] >= 'A' && usart_rx_buffer[2] <= 'H'))
-			{
-			usart_write_char(usart_rx_buffer[2]);
-			usart_write_str((pU08)" to ");
-			usart_write_U08_hex(usart_rx_buffer[4]);
-			usart_write_char('\n');
-				ad7719_enables[usart_rx_buffer[2]-'A']=usart_rx_buffer[4];
-				ad7719_channels_ready[usart_rx_buffer[2]-'A']=0x00;
-			}
-			else if  ((usart_rx_buffer_index=3) && 
-			(usart_rx_buffer[1] >= 'A' && usart_rx_buffer[1] <= 'H'))
-			{
-				usart_write_char(usart_rx_buffer[1]);
-				if (usart_rx_buffer[2]!='0') {
-					usart_write_str((pU08)" to 0xFF\n");
-					ad7719_enables[usart_rx_buffer[1]-'A']=0xFF;
-				} else
-				{
-					usart_write_str((pU08)" to 0x00\n");
-					ad7719_enables[usart_rx_buffer[1]-'A']=0x00;
-				}
-				ad7719_channels_ready[usart_rx_buffer[1]-'A']=0x00;	
-			}
-			else
-			{
-				usart_write_str((pU08)"\n something wrong\n");
-				usart_write_str((pU08)"usart_rx_buffer_index: ");
-				usart_write_U08(usart_rx_buffer_index, 3);
-				usart_write_str((pU08)"\n usart_rx_buffer[2]: ");
-				usart_write_char(usart_rx_buffer[2]);
-				usart_write_str((pU08)"\n usart_rx_buffer[4]: ");
-				usart_write_U08_hex(usart_rx_buffer[4]);
-				usart_write_char('\n');
-			}
-			break;
-		case 'e':	// ATmega internal ADC enable bitmaps may be set
-			usart_write_str((pU08)"\n setting ADC enable registers all");
-			if (usart_rx_buffer[1] == '0'){
-				usart_write_str((pU08)"OFF \n");
-				for ( U08 i=0; i<V_BITMAP + I_BITMAP; ++i ) {
-				adc_enables[i]=0x00;
-				adc_channels_ready[i]=0;
-			}
-				adc_enables[V_BITMAP + I_BITMAP + H_BITMAP -1] = 0x00;
-				adc_channels_ready[V_BITMAP + I_BITMAP + H_BITMAP -1]=0;
-			} else {
-				usart_write_str((pU08)"ON\n");
-				for ( U08 i=0; i<V_BITMAP + I_BITMAP; ++i ) {
-				adc_enables[i]=0xFF;
-				adc_channels_ready[i]=0;
-			}
-				adc_enables[V_BITMAP + I_BITMAP + H_BITMAP -1] = 0x0F;
-				adc_channels_ready[V_BITMAP + I_BITMAP + H_BITMAP -1]=0;
-			}
-			
-			
-			break;
-		case 'h':
-			usart_write_str((pU08)"\nheartbeat ");
-			heartbeat_enable = true;
-			if (usart_rx_buffer[1] == '0'){
-				heartbeat_enable = false;
-				usart_write_str((pU08)"off\n");
-			} else {
-				usart_write_str((pU08)"on\n");
-			}
-			break;
-		case 'G': 			// GET the Temperature channels, which are enabled
-			once_told_you = false;
-			for ( U08 i=0; i<CHANNEL_BITMAP; ++i ) {
-				ad7719_channels_ready[i]=0;
-			}
-			break;
-		case 'g':			// GET the voltage/current/humidity channels, which are enabled
-			once_told_you = false;
-			for ( U08 i=0; i<V_BITMAP + I_BITMAP + H_BITMAP; ++i ) {
-				adc_channels_ready[i]=0;
-			}
-			break;
-
-		case 'Q':
-			for (U08 i=0; i< TEMP_CHANNELS;++i) {
-				if (i%8 == 0) usart_write_char('\n');
-				usart_write_U32_hex(ad7719_values[i]);
-				usart_write_char('\t');
-			}
-			usart_write_char('\n');
-			break;
-
-		case 'q':
-			// output:	U08 adc_values[V_CHANNELS + I_CHANNELS + H_CHANNELS];
-			for (U08 i=0; i< V_CHANNELS + I_CHANNELS + H_CHANNELS;++i) {
-				if (i%8 == 0) usart_write_char('\n');
-				usart_write_U16(adc_values[i]*16, 5);
-				usart_write_char('\t');
-			}
-			usart_write_char('\n');
-			break;
-
-		case 'P':
-			print_ad7719_nicely();
-			break;
-			
-		case 'p':
-			print_adc_nicely();
-			break;
-
-		case 'T':
-			print_temp_nicely();
-			break;
-
-
-		case 's':
-			
-			usart_write_str((pU08)"adc status:\n");
-			for (U08 i=0; i< V_BITMAP + I_BITMAP + H_BITMAP;++i) {
-				usart_write_U08_bin(adc_enables[i]);	
-				usart_write_char(' ');
-			}
-			usart_write_char('\n');
-			for (U08 i=0; i< V_BITMAP + I_BITMAP + H_BITMAP;++i){
-				usart_write_U08_bin(adc_channels_ready[i]);
-				usart_write_char(' ');
-			}
-			usart_write_char('\n');
-		
-			usart_write_str((pU08)"ad7719 status:\n");
-			for (U08 i=0; i< CHANNEL_BITMAP;++i) {
-				usart_write_U08_bin(ad7719_enables[i]);
-				usart_write_char(' ');
-			}
-			usart_write_char('\n');
-			for (U08 i=0; i< CHANNEL_BITMAP;++i){
-				usart_write_U08_bin(ad7719_channels_ready[i]);
-				usart_write_char(' ');
-			}
-			usart_write_char('\n');
-				
-			usart_write_str((pU08)"time:");
-			usart_write_float((float)local_ms/1000 , 1,7);
-			usart_write_str((pU08)" sec.\n");
-			
-			usart_write_str((pU08)"adc measured all: ");
-			if (adc_measured_all)
-				usart_write_str((pU08)" true\n");
-			else
-				usart_write_str((pU08)"false\n");
-
-			usart_write_str((pU08)"ad7719 measured all: ");
-			if (ad7719_measured_all)
-				usart_write_str((pU08)" true\n");
-			else
-				usart_write_str((pU08)"false\n");
-			
-			usart_write_str((pU08)"adc current channel:");
-			usart_write_U08(adc_current_channel,2);
-			usart_write_char('\n');
-			
-			usart_write_str((pU08)"ad7719 current channel:");
-			usart_write_U08(ad7719_current_channel,2);
-			usart_write_char('\n');
-			break;	
-
-		case 'd':
-			usart_write_str((pU08)"\ndebug mode ");
-			debug_mode = true;
-			if (usart_rx_buffer[1] == '0'){
-				debug_mode = false;
-				usart_write_str((pU08)"off\n");
-			} else {
-				usart_write_str((pU08)"on\n");
-			}
-			break;		
-	}
-	
-	
-	usart_write_str((pU08)"\nready?");
-	for (U08 i=0; i<USART_RX_BUFFER_SIZE; ++i)
-		usart_rx_buffer[i] = 0;
-}
-
-void check_if_measured_all() {
-	adc_measured_all = true;
-	for ( U08 i=0; i<V_BITMAP + I_BITMAP + H_BITMAP; ++i ) {
-		if ((adc_enables[i] ^ adc_channels_ready[i]) != 0x00) {
-			adc_measured_all = false;
-			break;
-		}
-	}
-	ad7719_measured_all = true;
-	for ( U08 i=0; i<CHANNEL_BITMAP; ++i ) {
-		if ((ad7719_enables[i] ^ ad7719_channels_ready[i]) != 0x00) {
-			ad7719_measured_all = false;
-			break;
-		}
-	}
-
-
-}
-
-void print_ad7719_nicely() 
-{
-	float value;
-
-		usart_write_str((pU08)"\n printing measured resistance in kohms:\n");
-
-	for (U08 i=0; i< TEMP_CHANNELS;++i) {
-		if (i%8 == 0) usart_write_char('\n');
-
-		// print channel name:
-		usart_write_str((pU08)"R:"); //R for resistance
-		usart_write_char('A'+i/8); // Letters A,B,C,D,E,F,G,H
-		//usart_write_char(' '); 
-		usart_write_U08(i%8+1,1); // Numbers 1...8
-		usart_write_char(':'); 
-
-		// check if this channel is enabled in the bitmap
-		if (ad7719_enables[i/8] & (1<<i%8))
-		{
-			value = (6.25 * 1.024 * ad7719_values[i]) / ((U32)1 << 25);
-			usart_write_float(value, 3,6);
-			//usart_write_U32(ad7719_values[i],8);
-			//usart_write_U32_hex(data); //data
-			usart_write_str((pU08)"  ");	
-		} else {
-			usart_write_str((pU08)"        ");	
-		}
-		//usart_write_char('\n');
-	}
-}
-
-void print_adc_nicely() {
-	usart_write_str((pU08)"\n printing voltages in mV:\n");
-	// output:	U08 adc_values[V_CHANNELS + I_CHANNELS + H_CHANNELS];
-	for (U08 i=0; i< V_CHANNELS + I_CHANNELS + H_CHANNELS;++i) {
-	if (i%8 == 0) usart_write_char('\n');
-
-	if (i==0)
-		usart_write_str((pU08)"voltages:\n");
-	if (i==40)
-		usart_write_str((pU08)"currents in mV :-) :\n");
-	if (i==80)
-		usart_write_str((pU08)"humiditiesin mV :-) :\n");
-
-
-		
-		adc_output(i, adc_values[i]);
-		usart_write_str((pU08)"   ");
-	}
-	usart_write_char('\n');
-}
-
-
-void print_temp_nicely() 
-{
-	float temp;
-
-		usart_write_str((pU08)"\n printing measured temperature in °C:\n");
-
-	for (U08 i=0; i< TEMP_CHANNELS;++i) {
-		if (i%8 == 0) usart_write_char('\n');
-
-		// print channel name:
-		usart_write_str((pU08)"T:"); //R for resistance
-		usart_write_char('A'+i/8); // Letters A,B,C,D,E,F,G,H
-		//usart_write_char(' '); 
-		usart_write_U08(i%8+1,1); // Numbers 1...8
-		usart_write_char(':'); 
-
-		// check if this channel is enabled in the bitmap
-		if (ad7719_enables[i/8] & (1<<i%8))
-		{
-			temp = calc_temp(ad7719_values[i]);
-			usart_write_float(temp, 3,6);
-			//usart_write_U32(ad7719_values[i],8);
-			//usart_write_U32_hex(data); //data
-			usart_write_str((pU08)"  ");	
-		} else {
-			usart_write_str((pU08)"        ");	
-		}
-		//usart_write_char('\n');
-	}
-}
+    } // end of main while loop
+} // end of main function