Can timers be written to as a WORD?

Status
Not open for further replies.

camerart

Well-Known Member
Hi,
I'm setting a TMR0 like this:
TMR0H = %11111111
TMR0L = %11111110
Can they be written to like this:

TMR0 = 1000, or in a similar way.

Camerart.
 
They can in C but I doubt Vlad made it possible.... Why? Is it an issue!!
 
Ian Rogers said:
They can in C but I doubt Vlad made it possible.... Why? Is it an issue!!
Click to expand...
Hi I,
I should have asked, which is the 'best way' to write to TMR0? I need to set it to a string/variable received with a serial input.. (1000-2500)
C.
 
If you can't write a word then always write low byte last and read it first. The chips with a 16 bit timer0 have a feature to enable safe reading and writing of 16 bits.
 
Try,
word=readADC()
lowByte = word and 255
highByte = word/256

Or, this may also work, (not familiar with what Osh can do)
lowByte = word
highByte=word>>8

If there is any kind of union in Oshonsoft then you may be able to use that.

Mike.
 
Pommie said:
Try,
word=readADC()
lowByte = word and 255
highByte = word/256

Or, this may also work, (not familiar with what Osh can do)
lowByte = word
highByte=word>>8

If there is any kind of union in Oshonsoft then you may be able to use that.

Mike.
Click to expand...
Hi M,
I've just tried this, and it looks like it's ok:

tim0h is the ON time of a PIN tim0l is OFF.

tim0h = 65535
TMR0H = tim0h.HB
TMR0L = tim0h.LB
What do you think?
C.
 
Pommie said:
If you can't write a word then always write low byte last and read it first. The chips with a 16 bit timer0 have a feature to enable safe reading and writing of 16 bits.
Click to expand...
Hi P,
I also read that the LB should be written first, but I tried changing the order of the above example, and it worked.
I'll use LB first though.
C.
 
Assuming you're still using a 18F4331 then section 11.4 describes the reading and writing of timer0. The register TMR0H is not always TMR0H!!!

Mike.
 
Pommie said:
Assuming you're still using a 18F4331 then section 11.4 describes the reading and writing of timer0. The register TMR0H is not always TMR0H!!!

Mike.
Click to expand...
Hi M,
Yes, I read that it is a buffer, but I think #8 is ok, thanks.
Still using 18LF4431.
C.
 
Last edited:
jjw said:
X. HB, X. LB
You have used this before
Click to expand...
Hi J,
Ok.
This proves one thing: that you have a better memory than I do

Actually, I was trying to separate the BYTES, but I've now found that the solution at #8 works instead.

Thanks,
C.
 
Status
Not open for further replies.

Similar threads

M
Include bas extension to be iHex
Replies
2
Views
821
mini
M
M
  • Question
How to write Ascii to Hex
Replies
15
Views
2K
DogFlu66
  • Question
Can Oshonsoft use 'byref' in a FUNCTION? (Plus examples of CHAR MATCHING CODE)
3 4 5
Replies
92
Views
13K
camerart
  • Question
How can a STRING be converted to it's individual BYTES
Replies
2
Views
3K
camerart
M
  • Question
How to create hex files become demo version
2
Replies
20
Views
2K
Pommie
P
Menu
Log in
Register
Cookies are required to use this site. You must accept them to continue using the site. Learn more…