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I'm trying to help you out. I think in this case, it's a language thing...Originally Posted by Eugeniu
DIG should work for you...pulling individual digits out of the results and displaying them one by one. I don't know what else to say how or to say it for that matter that'll make more sense to you.
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Look here , is what I have tried :
adr = 22
i2cwrite I2CDAT, I2CCLK, $A0, adr,[temperature.LOWBYTE dig 4+48 ]
pause 15
adr=25
i2cwrite I2CDAT, I2CCLK, $A0, adr,[temperature.LOWBYTE dig 3+48]
pause 15
adr=28
i2cwrite I2CDAT, I2CCLK, $A0, adr,[temperature.LOWBYTE dig 2 + 48]
pause 15
adr=31
i2cwrite I2CDAT, I2CCLK, $A0, adr,[temperature.LOWBYTE dig 1+ 48]
pause 15
adr = 34
i2cwrite I2CDAT, I2CCLK, $A0, adr,[temperature.LOWBYTE dig 0 + 48]
pause 15
...on display I read 0 0 1 2 1 or 0 0 2 2 2 , and other numbers .
I'll try to explain my program ( this side with display ) :
after read a sign from eeprom program look in SELECT CASE CARACTER for a ASCI code and return a runing number >>>>
SELECT CASE CARACTER
CASE 65: SIR_NO=4 ;A
CASE 66: SIR_NO=9 ;B
CASE 67: SIR_NO=14 ;C
CASE 68: SIR_NO=19 ;D
CASE 69: SIR_NO=24 ;E
CASE 70: SIR_NO=29 ;F
CASE 71: SIR_NO=34 ;G
CASE 72: SIR_NO=39 ;H
CASE 73: SIR_NO=42 ;I
CASE 74: SIR_NO=47 ;J
CASE 75: SIR_NO=52 ;K
CASE 76: SIR_NO=57 ;L
CASE 77: SIR_NO=62 ;M
CASE 78: SIR_NO=67 ;N
CASE 79: SIR_NO=72 ;O
CASE 80: SIR_NO=77 ;P
CASE 81: SIR_NO=82 ;Q
CASE 82: SIR_NO=87 ;R
CASE 83: SIR_NO=92 ;S
CASE 84: SIR_NO=97 ;T
CASE 85: SIR_NO=102 ;U
CASE 86: SIR_NO=107 ;V
CASE 87: SIR_NO=112 ;W
CASE 88: SIR_NO=117 ;X
CASE 89: SIR_NO=122 ;Y
CASE 90: SIR_NO=127 ;Z
CASE 32: SIR_NO=132 ;SPATIU
CASE 48: SIR_NO=137 ;0
CASE 49: SIR_NO=140 ;1
CASE 50: SIR_NO=145 ;2
CASE 51: SIR_NO=150 ;3
CASE 52: SIR_NO=155 ;4
CASE 53: SIR_NO=160 ;5
CASE 54: SIR_NO=165 ;6
CASE 55: SIR_NO=170 ;7
CASE 56: SIR_NO=175 ;8
CASE 57: SIR_NO=180 ;9
CASE 46: SIR_NO=185 ;.
CASE 58: SIR_NO=188 ;:
CASE 61: SIR_NO=193 ;=
CASE 33: SIR_NO=196 ;!
CASE 45: SIR_NO=201 ;-
CASE 44: SIR_NO=204 ; ,
case 42: SIR_no=209 ; *
CASE 59: SIR_NO=212 ; ;
After this go to a tabel and serch for this runing number -OFSET-,from where return a matrix with what leds are on .
TABLOU:
LOOKUP OFSET,[_
$3F,$48,$48,$48,$3F,_ ;A 0-4
$36,$49,$49,$49,$7F,_ ;B 4-9
$22,$41,$41,$41,$3E,_ ;C 9-14
$3E,$41,$41,$41,$7F,_ ;D 14-19
$41,$49,$49,$49,$7F,_ ;E 19-24
$40,$48,$48,$48,$7F,_ ;F 24-29
$2E,$49,$49,$41,$3E,_ ;G 29-34
$7F,$08,$08,$08,$7F,_ ;H 34-39
$41,$7F,$41,_ ;I 39-42
$40,$7E,$41,$01,$02,_ ;J 42-47
$41,$22,$14,$08,$7F,_ ;K 47-52
$01,$01,$01,$01,$7F,_ ;L 52-57
$7F,$20,$10,$20,$7F,_ ;M 57-62
$7F,$04,$08,$10,$7F,_ ;N 62-67
$3E,$41,$41,$41,$3E,_ ;O 67-72
$30,$48,$48,$48,$7F,_ ;P 72-77
$3D,$42,$45,$41,$3E,_ ;Q 77-82
$31,$4A,$4C,$48,$7F,_ ;R 82-87
$26,$49,$49,$49,$32,_ ;S 87-92
$40,$40,$7F,$40,$40,_ ;T 92-97
$7E,$01,$01,$01,$7E,_ ;U 97-102
$7C,$02,$01,$02,$7C,_ ;V 102-107
$7E,$01,$0E,$01,$7E,_ ;W 107-112
$63,$14,$08,$14,$63,_ ;X 112-117
$70,$08,$07,$08,$70,_ ;Y 117-122
$61,$51,$49,$45,$43,_ ;Z 122-127
$00,$00,$00,$00,$00,_ ;SPATIU 127-132
$3E,$51,$49,$45,$3E,_ ;0 132-137
$01,$7F,$21,_ ;1 137-140
$31,$49,$45,$43,$21,_ ;2 140-145
$46,$69,$51,$41,$42,_ ;3 145-150
$04,$7F,$24,$14,$0C,_ ;4 150-155
$4E,$51,$51,$51,$72,_ ;5 155-160
$06,$49,$49,$29,$1E,_ ;6 160-165
$60,$50,$48,$47,$40,_ ;7 165-170
$36,$49,$49,$49,$36,_ ;8 170-175
$3C,$4A,$49,$49,$30,_ ;9 175-180
$00,$00,$00,$00,$01,_ ;. 180_185
$00,$24,$00,_ ;: 185_188
$28,$28,$28,$28,$28,_ ;= 188_193
$00,$7D,$00,_ ;! 193_196
$00,$08,$08,$08,$00,_ ;- 196_201
$00,$02,$01,_ ;, 201_204
$2A,$14,$3E,$14,$2A,_ ;* 204_209
$00,$0A,$01],DATE
I put this OFSET on a PIC port and scroll to left on display .
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Right. I understand what you are trying to do, with the EEPROM and the LED matrix's and such. It's a relatively common project.
What you aren't understanding is that you are only writing ONE BYTE at a time with those statements, not 3 at a time as your changing addresses would indicate.
And one other thing is 'precedence'. I'm not sure if it's applicable in this case, but...
In your statement above...
How does that get interpreted?Code:i2cwrite I2CDAT, I2CCLK, $A0, adr,[temperature.LOWBYTE dig 4+48 ]
Assume temperature.lowbyte = 123
You are trying to retrieve the 4th (actually 5th) digit of a byte value to which there can only be 3 digits.
Another thing, still assuming temperature.lowbyte = 123, and assume that 'dig 4' is actually 'dig 0'...
Will that statement return "3" + 48 or does it try to return the 52nd digit of temperature.lowbyte?
A better way to put that statement might be:
And again, trying to retrieve the 4th digit of a 3 digit value (at most) won't work...Code:i2cwrite I2CDAT, I2CCLK, $A0, adr,[ ( temperature.LOWBYTE dig 4 ) + 48 ]
Since you have obviously modified your program, could you post the whole thing again, including all the relevant information, PIC type, hardware setup, etc.etc.
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skimask;64450]Right. I understand what you are trying to do, with the EEPROM and the LED matrix's and such. It's a relatively common project.
What you aren't understanding is that you are only writing ONE BYTE at a time with those statements, not 3 at a time as your changing addresses would indicate.
And one other thing is 'precedence'. I'm not sure if it's applicable in this case, but...
In your statement above...
How does that get interpreted?Code:i2cwrite I2CDAT, I2CCLK, $A0, adr,[temperature.LOWBYTE dig 4+48 ]
Assume temperature.lowbyte = 123
You are trying to retrieve the 4th (actually 5th) digit of a byte value to which there can only be 3 digits.
I understand what you say , but I try something , to see what display
Another thing, still assuming temperature.lowbyte = 123, and assume that 'dig 4' is actually 'dig 0'...
Will that statement return "3" + 48 or does it try to return the 52nd digit of temperature.lowbyte?
A better way to put that statement might be:
Code:i2cwrite I2CDAT, I2CCLK, $A0, adr,[ ( temperature.LOWBYTE dig 4 ) + 48 ]
Is not imprtant , + or - paranthesis I see on display the same result .
For the result of " temperature.LOWBYTE " I do not understand what is this number .
If I put
adr = 24
i2cwrite I2CDAT, I2CCLK, $A0, adr,[(temperature dig 2) + 48]
pause 15
adr = 27
i2cwrite I2CDAT, I2CCLK, $A0, adr,[(temperature dig 1) + 48]
pause 15
adr = 30
i2cwrite I2CDAT, I2CCLK, $A0, adr,[(temperature dig 0) + 48]
pause 15
Obtein a number which is a hexa from a teperature ...968 ,975 - 2408,2421
For a LCD display write DEC2 (temperature/100) "," DEC2 (temperature//100). But for me in this moment I do not know what to do !
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Ok, so the parenthesis don't make a difference, no problem...Guess we're going to have to build this up from scratch...
Do you have that LCD connected to your project? Is it working as you expect it to work (i.e. displays HELLO if you command it)
EDIT: Never mind, obviously you do have the LCD connected...
In reference to your I2CWRITE statements a few posts ago...
You do NOT need to store temperature in the manner you are storing it. What you are doing in effect is storing the ASCII equivalent of your temperature value in 3 bytes, then retrieving that same result and trying to display the ASCII result of each of those bytes...in effect, display the ASCII values of the ASCII values of the bytes originally stored....sort of like looking at a camera which is looking at you looking at a camera which is looking at you...infinite regression...adr = 24
i2cwrite I2CDAT, I2CCLK, $A0, adr,[(temperature dig 2) + 48]
pause 15.......and so on.....
It looks to me like you're doing twice as much work as you need to do!
Try to store the temperature like this:
This will store the WORD variable temperature in two bytes as required.Code:adr = 24 i2cwrite i2cdat, i2cclk, $a0, adr,[temperature.highbyte] adr = 25 i2cwrite i2cdat, i2cclk, $a0, adr,[temperature.lowbyte]
Then for retrieving that same value:
This should display on the LCD is in fact the temperature sensor and it's code are working properly.Code:adr = 24 i2cread i2cdat, i2cclk, $a0, adr, temperature.highbyte adr = 25 i2cread i2cdat, i2cclk, $a0, adr, tempearture.lowbyte ............. lcdout DEC2 (temperature/100) , "," , DEC2 (temperature//100)
To get the individual digits from this value for display on the LED matrix instead of the LCD:
Code:adr = 24 i2cread i2cdat, i2cclk, $a0, adr, temperature.highbyte adr = 25 i2cread i2cdat, i2cclk, $a0, adr, tempearture.lowbyte ............. digit var byte[5] digit[5] = temperature dig 4 digit[4] = temperature dig 3 digit[3] = temperature dig 2 digit[2] = "," digit[1] = temperature dig 1 digit[0] = temperature dig 0 ............
Last edited by skimask; - 20th October 2008 at 05:03.
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[QUOTE=skimask;64461]Ok, so the parenthesis don't make a difference, no problem...Guess we're going to have to build this up from scratch...
Do you have that LCD connected to your project? Is it working as you expect it to work (i.e. displays HELLO if you command it)
No , I have not a LCD display on the same leds display , but in my mind is to do this . I have a LCD display on a test plate for differnet programs .
I know very well to work with a LCD display ( is a good "HELP " in MicroBasic Studio Plus
EDIT: Never mind, obviously you do have the LCD connected...
In reference to your I2CWRITE statements a few posts ago...
"Obtein a number which is a hexa from a teperature ...968 ,975 - 2408,2421 "
This is wrong . Was a dream ! When I have put my fingers on it , what I can see on leds display was more differnt by my body temperature
..............................................
Is not necesary to use " HIGH BYTE " I use only "LOW BYTE "
This will store the WORD variable temperature in two bytes as required.
Then for retrieving that same value:
[code]
adr = 24
i2cread i2cdat, i2cclk, $a0, adr, temperature.highbyte
adr = 25
i2cread i2cdat, i2cclk, $a0, adr, tempearture.lowbyte
.............
digit var byte[5]
digit[5] = temperature dig 4
digit[4] = temperature dig 3
digit[3] = temperature dig 2
digit[2] = ","
digit[1] = temperature dig 1
digit[0] = temperature dig 0
I'll try this !
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Should use it more often...No , I have not a LCD display on the same leds display , but in my mind is to do this . I have a LCD display on a test plate for differnet programs .
I know very well to work with a LCD display ( is a good "HELP " in MicroBasic Studio Plus
The 'temperature' function will return a WORD result.Is not necesary to use " HIGH BYTE " I use only "LOW BYTE "
That's what we suggested back in post #2!!!digit var byte[5]
digit[5] = temperature dig 4
digit[4] = temperature dig 3
digit[3] = temperature dig 2
digit[2] = ","
digit[1] = temperature dig 1
digit[0] = temperature dig 0
I'll try this !
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