/* ----------------------------------------------------------------------------

 * "THE BEER-WARE LICENSE" (Revision 42):

 * <joerg@FreeBSD.ORG> wrote this file.  As long as you retain this notice you

 * can do whatever you want with this stuff. If we meet some day, and you think

 * this stuff is worth it, you can buy me a beer in return.        Joerg Wunsch

 * ----------------------------------------------------------------------------

 * Anzeige der ADC-Messwerte auf dem Display

 * Das Display (Displaytech404B) hat zwei Kontroller und darum 2 Enable-Leitungen

 */



#include "defines.h"

#include <ctype.h>

#include <stdint.h>

#include <stdio.h>

#include <math.h>

#include <avr/io.h>

#include <avr/pgmspace.h>

#include <util/delay.h>

#include "lcd.h"

#include "uart.h"

#include "HD44780.h"



static void

ioinit(void)

{

  uart_init();

  lcd_init();	

}



int

main(void)

{

  uint16_t AD0 = 0;		// Lokale Spannungsmessung

  uint16_t AD1 = 0;		// Lokale Strommessung

    

  double Uout = 0.0;

  double Iout = 0.0;

  double Pout = 0.0;	

  double AD0Scale = 0.009;	// max 10 V -> 1023, also 0.009775V pro LSB

  double AD1Scale = 0.0009;		// max 1 V -> 1023, also 0.0009775V pro LSB



//init  

  ioinit();



// Umleitung

  FILE lcd_str = FDEV_SETUP_STREAM(lcd_putchar, NULL, _FDEV_SETUP_WRITE);

  stderr = &lcd_str;



//  Ewige Schleife 

  for (;;)

	{

	AD0 = 900;		//Beispiel = 8.79V. Hier kommt spaeter die ADC-Abfrage hin

	AD1 = 300;		// = 0.29A

  

	Uout = (float)AD0 * AD0Scale;

	Iout = (float)AD1 * AD1Scale;

	Pout = Uout * Iout;

	fprintf(stderr, "Pout= %fW\n",Pout);		// Liefert "Pout= ?W"

	//fprintf(stderr, "Pout= %dW\n",(uint16_t)Pout);	//Klappt

	_delay_ms(250);

	}	

  return 0;

}

PRG            = Multimeter_ATM48_4x40_01

OBJ            = Multimeter_ATM48_4x40_01.o hd44780_DualKS66.o lcd.o uart.o

MCU_TARGET     = atmega48

OPTIMIZE       = -Os

PRINTF_LIB = -Wl,-u,vfprintf -lprintf_flt

MATH_LIB = -lm



DEFS           =

LIBS           = 



# You should not have to change anything below here.

CC             = avr-gcc



CFLAGS        = -g -Wall $(OPTIMIZE) -mmcu=$(MCU_TARGET) $(DEFS)

LDFLAGS       = -Wl,-Map,$(PRG).map



OBJCOPY        = avr-objcopy

OBJDUMP        = avr-objdump





all: $(PRG).elf lst text

# original     all: $(PRG).elf lst text eeprom

$(PRG).elf: $(OBJ)

	$(CC) $(CFLAGS) $(LDFLAGS) -o $@ $^ $(LIBS)





clean:

	rm -rf *.o $(PRG).elf *.eps *.png *.pdf *.bak

	rm -rf *.lst *.map $(EXTRA_CLEAN_FILES)



lst:  $(PRG).lst



%.lst: %.elf

	$(OBJDUMP) -h -S $< > $@



# Rules for building the .text rom images



text: hex bin srec



hex:  $(PRG).hex

bin:  $(PRG).bin

srec: $(PRG).srec



%.hex: %.elf

	$(OBJCOPY) -j .text -j .data -O ihex $< $@



%.srec: %.elf

	$(OBJCOPY) -j .text -j .data -O srec $< $@



%.bin: %.elf

	$(OBJCOPY) -j .text -j .data -O binary $< $@



# Rules for building the .eeprom rom images



eeprom: ehex ebin esrec



ehex:  $(PRG)_eeprom.hex

ebin:  $(PRG)_eeprom.bin

esrec: $(PRG)_eeprom.srec



%_eeprom.hex: %.elf

	$(OBJCOPY) -j .eeprom --change-section-lma .eeprom=0 -O ihex $< $@



%_eeprom.srec: %.elf

	$(OBJCOPY) -j .eeprom --change-section-lma .eeprom=0 -O srec $< $@



%_eeprom.bin: %.elf

	$(OBJCOPY) -j .eeprom --change-section-lma .eeprom=0 -O binary $< $@



# Every thing below here is used by avr-libc's build system and can be ignored

# by the casual user.



JPEGFILES               = stdiodemo-setup.jpg



JPEG2PNM                = jpegtopnm

PNM2EPS                 = pnmtops

JPEGRESOLUTION          = 180

EXTRA_CLEAN_FILES       = *.hex *.bin *.srec *.eps



dox: ${JPEGFILES:.jpg=.eps}



%.eps: %.jpg

	$(JPEG2PNM) $< |\

	$(PNM2EPS) -noturn -dpi $(JPEGRESOLUTION) -equalpixels \

	> $@