Author |
Message |
Topic: Different speed for different ports |
RBuilder
Replies: 21
Views: 18898
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Forum: General CCS C Discussion Posted: Thu Mar 22, 2012 6:03 am Subject: Different speed for different ports |
output_high(pin_d7) is slower than output_high(pin_d0) even when in a timer
You should be able to post a super-short compilable test program so
we can test this.
Have you tested the other code fr ... |
Topic: Different speed for different ports |
RBuilder
Replies: 21
Views: 18898
|
Forum: General CCS C Discussion Posted: Wed Mar 21, 2012 5:20 pm Subject: Different speed for different ports |
Great that is a nice response. Thanks for taking the time.
The thing is, this actually comes from a timer experience also. output_high(pin_d7) is slower than output_high(pin_d0) even when in a time ... |
Topic: Different speed for different ports |
RBuilder
Replies: 21
Views: 18898
|
Forum: General CCS C Discussion Posted: Wed Mar 21, 2012 12:58 am Subject: Different speed for different ports |
Unexplained #bit and other VAR defines aside ---
is this not a a very primitive way to try to output a serial baudot code bit stream ?? ie: generate software rs232 style bit bang output ??
an ... |
Topic: Different speed for different ports |
RBuilder
Replies: 21
Views: 18898
|
Forum: General CCS C Discussion Posted: Tue Mar 20, 2012 5:03 pm Subject: Different speed for different ports |
What's your CCS compiler version ? It's a 4-digit number given at the
top of the .LST file, which will be in your project directory after a
successful compilation. Examples of version numbers: ... |
Topic: Different speed for different ports |
RBuilder
Replies: 21
Views: 18898
|
Forum: General CCS C Discussion Posted: Tue Mar 20, 2012 4:50 pm Subject: Different speed for different ports |
If you want help, you need to post a complete test program. For example
in your code, you don't tell show the declaration of 'port'. You also don't
tell us your PIC, or your oscillator frequency.
... |
Topic: Different speed for different ports |
RBuilder
Replies: 21
Views: 18898
|
Forum: General CCS C Discussion Posted: Tue Mar 20, 2012 12:42 pm Subject: Different speed for different ports |
I data logged a 12.8us timer turning on and off 20 i/o with fast and general and in the main thread counted from 0 to 800000.
With fast i/o it took 4.5400 seconds
With general purpose it took 4.5 ... |
Topic: Different speed for different ports |
RBuilder
Replies: 21
Views: 18898
|
Forum: General CCS C Discussion Posted: Tue Mar 20, 2012 11:43 am Subject: Different speed for different ports |
Hello, also ..
I think i see how to set the tris direction without modifying the entire port... I can use Output_Float (for input) and Output_Drive (for output)?
I notice that Output_Float() w ... |
Topic: Different speed for different ports |
RBuilder
Replies: 21
Views: 18898
|
Forum: General CCS C Discussion Posted: Tue Mar 20, 2012 9:18 am Subject: Different speed for different ports |
Hello,
I noticed something very unusual for me. I wrote a software write serial function. I notice there is a speed difference between pin_Do vs pin_D7.
Although, I checked the asm and the code ... |
Topic: I2C 18F4685 Force_HW - Issue |
RBuilder
Replies: 3
Views: 7113
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Forum: General CCS C Discussion Posted: Thu Oct 27, 2011 11:14 pm Subject: I2C 18F4685 Force_HW - Issue |
Okay.... So I wrote that post. And not even a few minutes later I had it working. So hopefully this will help someone else out.
the Project Wizard had created this Setup to disable SPI for me...
... |
Topic: I2C 18F4685 Force_HW - Issue |
RBuilder
Replies: 3
Views: 7113
|
Forum: General CCS C Discussion Posted: Thu Oct 27, 2011 11:03 pm Subject: I2C 18F4685 Force_HW - Issue |
Hello there!
I see many posts regarding hardware I2C and Force_HW issues.
First, I should add that almost all of the issues i've read on this forum seem to have been resolved or the thread acti ... |
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