compare a value to a table - Electronic Circuits Projects Diagrams Free

pouchito · 7th January 2007, 11:05 AM

Hi All

Need your help

- using PICBASIC PRO (pic simulator IDE 6.2 compiler)
- i input an analog value ranging from 0-2.5V and i converted it to digital 10bit

MY PROBLEM is :

what i need to do for example :
if the digital value is 0000010101 output 2%
if the digital value is 0000011011 output 2.2%

should i place the 2% .... in an array table and compare them,
if yes how this can be done?

Please help

**Nigel Goodwin** · 7th January 2007, 11:32 AM

How many values do you need?.

pouchito · 7th January 2007, 11:57 AM

i minimize it to 128 values

**Nigel Goodwin** · 7th January 2007, 12:02 PM

Is it a linear progression?.

pouchito · 7th January 2007, 12:08 PM

not 100% linear
i.e: in some cases, for different input values, we can get same % results

ex: for 0000001010 ==> 2%
for 0000001011 ==> 2%
for 0000001100 ==> 2%
for 0000001101 ==> 2.1%
for 0000001110 ==> 2.2%
for 0000001111 ==> 2.3%
for 0000010000 ==> 2.3%
for 0000010001 ==> 2.3%

**Nigel Goodwin** · 7th January 2007, 12:21 PM

If it's not linear you need a table then! - unless you can produce a formula that fits it?.

pouchito · 7th January 2007, 12:31 PM

how to do a table ?

**Nigel Goodwin** · 7th January 2007, 02:35 PM

I don't use PICBASIC, so I can't help you with that, in assembler you use a series of RETLW's.

Can you define a single dimensional array in your BASIC?.

EDIT:

Quick rethink! - does your BASIC support the DATA statement?, this is an example from the PIC BASIC compiler version of WinPicProg I was working on.

Code:

DATA 45, 255, 0, "H", "e", "l", "l", "o" - store 8 bytes of data. 
READ A - read the first three bytes of data to three variables.
READ B
READ C 
RESTORE 4 - reset the read point to 4th byte
FOR X=1 TO 5 - print a stored string.
    READ A
    PRINT CHR$(A)
NEXT X

pouchito · 7th January 2007, 02:50 PM

unfortunately , it does not support this

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7th January 2007, 11:05 AM	#1
pouchito	compare a value to a table Hi All Need your help - using PICBASIC PRO (pic simulator IDE 6.2 compiler) - i input an analog value ranging from 0-2.5V and i converted it to digital 10bit MY PROBLEM is : what i need to do for example : if the digital value is 0000010101 output 2% if the digital value is 0000011011 output 2.2% should i place the 2% .... in an array table and compare them, if yes how this can be done? Please help

7th January 2007, 11:32 AM	#2
Nigel Goodwin	How many values do you need?. __________________ PIC programmer software, and PIC Tutorials at: http://www.winpicprog.co.uk

7th January 2007, 11:57 AM	#3
pouchito	i minimize it to 128 values

7th January 2007, 12:02 PM	#4
Nigel Goodwin	Is it a linear progression?. __________________ PIC programmer software, and PIC Tutorials at: http://www.winpicprog.co.uk

7th January 2007, 12:08 PM	#5
pouchito	not 100% linear i.e: in some cases, for different input values, we can get same % results ex: for 0000001010 ==> 2% for 0000001011 ==> 2% for 0000001100 ==> 2% for 0000001101 ==> 2.1% for 0000001110 ==> 2.2% for 0000001111 ==> 2.3% for 0000010000 ==> 2.3% for 0000010001 ==> 2.3%

7th January 2007, 12:21 PM	#6
Nigel Goodwin	If it's not linear you need a table then! - unless you can produce a formula that fits it?. __________________ PIC programmer software, and PIC Tutorials at: http://www.winpicprog.co.uk

7th January 2007, 02:35 PM	#8
Nigel Goodwin	I don't use PICBASIC, so I can't help you with that, in assembler you use a series of RETLW's. Can you define a single dimensional array in your BASIC?. EDIT: Quick rethink! - does your BASIC support the DATA statement?, this is an example from the PIC BASIC compiler version of WinPicProg I was working on. Code: DATA 45, 255, 0, "H", "e", "l", "l", "o" - store 8 bytes of data. READ A - read the first three bytes of data to three variables. READ B READ C RESTORE 4 - reset the read point to 4th byte FOR X=1 TO 5 - print a stored string. READ A PRINT CHR$(A) NEXT X __________________ PIC programmer software, and PIC Tutorials at: http://www.winpicprog.co.uk Last edited by Nigel Goodwin; 7th January 2007 at 02:39 PM.

7th January 2007, 02:50 PM	#9
pouchito	unfortunately , it does not support this