I laud you for the initiative of searching for a code sample, that you did not find exactly what you hoped for is, in my opinion good. had you fund 'everything', what would you have learned from that.

Many pieces of code shown are "suggestions" to set you on the path to figure out how to make your own. Since no two projects are identical, there can be no "absolutely ready code".

There is, ideed, a start of T1, I assume that the PWM suggestion code is extracted from some project.

Changing the subject, do you know if the 89c52 or 89c51 can turn on a DC motor? Must I use another IC between them?
I suggest, that you read the datasheet for your uC to see whet the max current and voltage the pins can handle is.

One more suggestion: if you are not locked into a particul;ar derivative (89c52 or 89c51 can be anything), choose one with a PCA. If you do that there is a wealth of information in The PCA cookbook
http://www.intel.com/design/mc...270609.htm

Your questions indicate unfamiliarity with the processor, so it will be mandatory for you to read "the bible"

here are the links to "the bible"
Chapter 1
http://www.semiconductors.philips.com/acrobat/v...ARCH_1.pdf

chapter 2
http://www.semiconductors.philips.com/acrobat/v...UIDE_1.pdf


chapter 3
http://www.semiconductors.philips.com/acrobat/v...WARE_1.pdf

Erik