Hex values to decimal

[HenrikOlsson]

You don't get to choose in what format the number is stored, it doesn't work like that.
2B in hex
43 in decimal
00101011 in binary
+ in ASCII
These are all the same thing and stored exactly the same in a variable.

mai = $2B
mai = %00101011
mai = 43
mai = "+"

Exactly the same result. It's just how we choose to interpret the information.

If you want to receive a number expressed in a "human readable" format (ie represented as an ASCII string) you use the available DEC/HEX/BIN modifiers (as you are).

The code, as it runs, will then interpret ASCII characters and convert to an actual number so that the ASCII string '2B' becomes the decimal value 43. There's no need to use an array in the HSERIN statement because you're not storing the '2' and the 'B', you're storing the decimal value 43 that the ASCII string '2B' represents.

Then, when you do the LCDOUT you, again, use the DEC (or HEX or BIN) modifier to convert the decimal value 43 back into the ASCII characters '4' and '3' which are displayed on the LCD.

Since your LCD shows 43 when you send '41 05 2B' everything is working exactly as expected and when you do decvalue = mai you'll copy the content of mai to decvalue so it TOO contains 43.

I don't get what the problem is......

/Henrik.

[louislouis]

You don't get to choose in what format the number is stored, it doesn't work like that.
2B in hex
43 in decimal
00101011 in binary
+ in ASCII
These are all the same thing and stored exactly the same in a variable.

mai = $2B
mai = %00101011
mai = 43
mai = "+"

Exactly the same result. It's just how we choose to interpret the information.

If you want to receive a number expressed in a "human readable" format (ie represented as an ASCII string) you use the available DEC/HEX/BIN modifiers (as you are).

The code, as it runs, will then interpret ASCII characters and convert to an actual number so that the ASCII string '2B' becomes the decimal value 43. There's no need to use an array in the HSERIN statement because you're not storing the '2' and the 'B', you're storing the decimal value 43 that the ASCII string '2B' represents.

Then, when you do the LCDOUT you, again, use the DEC (or HEX or BIN) modifier to convert the decimal value 43 back into the ASCII characters '4' and '3' which are displayed on the LCD.

Since your LCD shows 43 when you send '41 05 2B' everything is working exactly as expected and when you do decvalue = mai you'll copy the content of mai to decvalue so it TOO contains 43.

I don't get what the problem is......

/Henrik.

Hi Henrik, yes right the LCD shows the value in dec that is what I want, but next in the code I want to do some math or comparsion with decimal value of this number.

[HenrikOlsson]

And what's stopping you?
Either I don't get it or you don't :-) No offense.

mai VAR BYTE
value VAR BYTE

mai = $2B   'assign value to variable, in this case the value 43 represented as HEX.

mai = mai + 10
LCDOUT $FE, 1, DEC mai   ' will show 53
PAUSE 2000

value = mai * 4
LCDOUT $FE, 1, DEC value   ' will show 212
PAUSE 2000

value = value / 5
LCDOUT $FE, 1, DEC value    ' will show 42
PAUSE 2000

IF mai < $3A THEN
  LCDOUT $FE, 1, "mai is smaller than 58"
ENDIF
PAUSE 2000

IF mai > value THEN
  LCDOUT $FE, 1, "Yes, mai is bigger than value"
ENDIF
PAUSE 2000

LCDOUT $FE, 1, DEC mai, "  ", HEX mai
PAUSE 2000

Show us the math or comparison you're wanting to do and tell us wha the problem you're having actually is.

/Henrik.

[louislouis]

ahaaa, I thought that in PBP not work and I don't try this all the time. Now it's
more clear. Thanks guys for the patience with me, I'm just an old beginner (63) and I try to learn about these (new for me) things.