HEX value o/p to PC and arrays

[Christos_K]

Hi all. I was wondering how can I send to the terminal of my PC using MAX232 the hex value of a variable.

hserout [dummydata] will give me the the dec value..Any ideas.

Also a question about Arrays.

I want to create an array with byte values in it and read and write to it. Will this be correct:

Array1 var byte[4]
.
....
.
for i=0 to 3
array[i]=i
i=i+1
next i

will this give the following result??
array1[0]=0
array1[1]=1
array1[2]=2
array1[3]=3

Thanx!

[CocaColaKid]

Have you tried using HEX2 variable?

hserout [HEX2 dummydata]

The 2 after HEX is the number of digits. You can also use DECx for decimal and BINx for binary with x being the number of digits to display.

[CocaColaKid]

array1  var  byte[4]
...


for i = 0 to 3
array[i]=i
next i

Your code i believe will screw up the for...next loop because you will be changing the value of i.

[rhino]

array1  var  byte[4]
...


for i = 0 to 3
array[i]=i
next i

I think this may work better.

array1  var  byte[3]
...


for i = 0 to 3
array1[i]=i
next i

[CocaColaKid]

oops, missed those ones

[rhino]

Honest mistake.... right on otherwise!

[Bruce]

Also a question about Arrays.

I want to create an array with byte values in it and read and write to it. Will this be correct:

Array1 var byte[4]
.
....
.
for i=0 to 3
array[i]=i
i=i+1
next i

will this give the following result??
array1[0]=0
array1[1]=1
array1[2]=2
array1[3]=3

Thanx!

The value of i is automatically incremented by the for next loop, so just remove the i=i+1.

This will give you the results you're looking for.

Array1 var byte[4] ' declare a 4-byte array

for i=0 to 3 ' index array elements 0 to 3 (4 total)
array[i]=i
next i

Array elements start at 0, and end at the declared size-1. I.E. Array VAR BYTE[4] gives you
4 byte sized elements in the Array that are indexed 0 to 3.

If you do this;

Array1 var byte[3]

for i=0 to 3
array[i]=i
next i

You'll end up placing the 3 in a RAM location outside your 3-byte array.

[rhino]

Good catch Bruce.... I see my mistake!

[CocaColaKid]

lol, Bruce, shouldn't it be array1 and not array? Caught you too!

[Bruce]

Ya got me......;o]

[Christos_K]

Wow! Thanx for all your answers!! You have been more than helpful! Just one more quick one though...I was not aware of the HEX statement...
If i want to store to Array1[2] the hex value 0x2A will it be
Array[2] = HEX 2A

or


Array[2] = $2a (as it says on manual page 25) ????

And if i want to compare the value store in Array[2] with 0x3F will it be

if array[2] != $3F .....

or

if array[2] != hex 3F ???

Thank you all again so much!!!