Write Onewire data toa I2C memory / read ASCI

[languer]

Eugeniu, below are some ideas on how to modify your code with the help of an LCD. This should provide all the info for the conversion, decoding, and displaying of the temp based on the DS18S20 (which matches your previous posted table). All based on your code, SKIMASK's suggestions, and readily available code on the forum.

modifications to variables

Cold_Bit VAR temperature.Bit11	' Sign-Bit for +/- Temp. 1 = Below 0 deg C
Half_Deg_Bit VAR temperature.Bit0	' 0.5deg Bit
Sign VAR temperature.HIGHBYTE	' +/- sign for temp display
temperature_int VAR temperature.LOWBYTE	' integer part of temperature   
temperature_dec VAR BYTE	' fractional part of temperature
digit var byte[5]

reading temperature (this is not better than what you had, just short and simple)

'read temperature
OWOut DQ, 1, [$CC, $44]	' Start temperature conversion
pause 1000	' Wait max conversion time
OWOut DQ, 1, [$CC, $BE]	' Read the temperature
OWIn DQ, 0, [temperature_int, sign]	' Store temperature on variable

storing raw temperature on EEPROM

'store raw value of temperature in EEPROM (like SKIMASK suggested)
adr = 24
i2cwrite i2cdat, i2cclk, $a0, adr,[sign]
adr = 25
i2cwrite i2cdat, i2cclk, $a0, adr,[temperature_int]

reading raw temperature from EEPROM

'read raw temperature from EEPROM
adr = 24
i2cread i2cdat, i2cclk, $a0, adr, sign
adr = 25
i2cread i2cdat, i2cclk, $a0, adr, temperature_int

decoding temperature (including negative temperatures)

'decode temperature as needed (this will decode both positive and negative temperatures)
IF Cold_bit = 1 THEN	' If Cold_Bit = 1, negative temperature
	Sign  = "-"
	temperature_int = (255 - temperature_int) + 1	' 2s Complement
ELSE	' If Cold_Bit = 0, positive temperature
	Sign  = "+"
ENDIF
temperature_int = temperature_int / 2	' Strip LSB from temperature reading
IF Half_Deg_Bit = 1	' If Half_Deg_Bit = 1, add half degree to result
	temperature_dec = 5
ELSE
	temperature_dec = 0
ENDIF

displaying decoded temperature on LCD

'to display temperature on LCD
lcdout sign , DEC2 (temperature_int) , "," , DEC2 (temperature_dec)

storing decoded temperature digits

'to extract digits
digit[5] = temperature_int dig 2
digit[4] = temperature dig 1
digit[3] = temperature dig 0
digit[2] = ","
digit[1] = temperature_dec dig 0
digit[0] = 0

P.S. When posting use the "code" tags to wrap the code and display it nice and tidy. Also use the "quote" tags when quoting somebody; again it displays nice and tidy.

[skimask]

One of the key phrases to be taken from this statement:

..........................
All based on your code, SKIMASK's suggestions, and readily available code on the forum...........................

And this might help your post formatting a bit...
http://www.picbasic.co.uk/forum/misc...bbcode#imgcode

[Eugeniu]

And this might help your post formatting a bit...
http://www.picbasic.co.uk/forum/misc...bbcode#imgcode

Was very usefully !

Thank you .

PS. I 'll be very bussy for a few day , and after this I'll work again to my project . I 'll tell you what I can doing .

[Eugeniu]

[QUOTE=languer;64516]Eugeniu, below are some ideas on how to modify your code with the help of an LCD.

Thank you for your try to halp me , But remember I do not use a LCD display !

P.S. When posting use the "code" tags to wrap the code and display it nice and tidy. Also use the "quote" tags when quoting somebody; again it displays nice and tidy

I do not use it , becose I do not know it . Thanks !

[skimask]

Thank you for your try to halp me , But remember I do not use a LCD display !

But you did say earlier that you do HAVE an LCD, and if you know how to use it, and can make it work, then why not use it to help you find your problem.
And with those code snippets above, you should be able to pull out of them the chunks of code you may and/or may not need to get your project working, whether it be displayed on an LCD (which would be very handy) or LED matrix or on punch cards.

I do not use it , becose I do not know it . Thanks !

Which is why I put that link in post #57 above. That way you can learn how to use those 'tags'.

[Eugeniu]

But you did say earlier that you do HAVE an LCD, and if you know how to use it, and can make it work, then why not use it to help you find your problem

I have try , be sure . I use a test program on LCD , bat there it work , on LEDS display not . For LCD are very usefully DEC ; HEX;...commands . I'try to change the kind of writing text ,(in my programme) ,to use " SELECT CASE " for binary or hexa byte .

[skimask]

I have try , be sure . I use a test program on LCD , bat there it work , on LEDS display not . For LCD are very usefully DEC ; HEX;...commands . I'try to change the kind of writing text ,(in my programme) ,to use " SELECT CASE " for binary or hexa byte .

So are you saying that everything works as you want it to work if you are using the LCD?
There is no need to rewrite the entire program!!! Your answers have been practically handed to you in previous posts, with example provided. The only thing left to do is to write the code for you.

[Eugeniu]

So are you saying that everything works as you want it to work if you are using the LCD?

Yes ! But not on this plate . On this plate (Leds display )I use a PIC 16F876 and I have 3 free pins only on it . I can not install a LCD. Will be very usefully . I am not sure ( in my mind )every time that sensor work . In future I try to change PIC with 16F877 ,to can have together Leds and LCD display for ilk sensor .

There is no need to rewrite the entire program!!! Your answers have been practically handed to you in previous posts, with example provided. The only thing left to do is to write the code for you

I am not sure that I understand what you say !

[skimask]

Yes ! But not on this plate .

Ok, as long as the code works in one place... I understand you don't have enough pins to run the LCD on this particular board and need to use the matrix'd LEDs...

I am not sure that I understand what you say !

Meaning that the posts referring to the use of the DIG function with bytes/words/whatever are most likely what you need to pull the individual digits out of the bytes/words/whatever to send to the LEDs...