hello, every body i'm working with the AT89C5115 of ATMEL and i want to generate a square pulse of 40Khz using the PCA( PWM, the capture or the timer ). for the moment i coulndn't resolve the problem PCA counter registers (CL and CH) doesn't increment even activated. ? if some one have informations i'll be gratefull thanks in advance
hi, well even i'm working with the atmel mc T89C5115 and i havent found the logic for programming the PCA to generate a 25KHz freq wave which has 10% duty cycle. i wud be really thankful if u wud share any logic that u have with me on this topic. the cookbook abt philips wasnt helpful in programming the PCA since i was not able to understand the codes it had in assembly and moreover the mc used there was different. thanks, swapna
have you even looked at the PCA cookbook? Erik
erik, i have not only seen but read the cookbook and i found that it has information only about a few philips microcontrollers whereas i need information about atmel chips. moreover the code examples given there are in assembly which i'm not able to relate much to. the codes i wrote in C are giving me error as certain sfr's are not defined in particular register files. so any information on atmel chips wud be helpful. thanks, swapna.
i found that it has information only about a few philips microcontrollers whereas i need information about atmel chips. 10 there is no info on "philips chips" in the cookbook, only Intel. Who cares, if you had taken the time to check, you would have seen that the Atmel implementation is the same (maybe with a small expansion here or there). moreover the code examples given there are in assembly which i'm not able to relate much to. Then I will not give $0.05 for you C. If you do not know the underlying workings of your controller (have made some assembler) your C will be woefully inefficient. Erik
Dear dear Erik, there is no info on "philips chips" in the cookbook, only Intel. you dont need to tell me this as it is an INTEL cookbook. i can perfectly well realise that. maybe with a small expansion here or there... i hope u realise very well that while involving urself in major projects "small expansions" play a very important role....if i cud do these small expansions myself i wudnt waste my time posting this query on the site. still i'm "thankful" for ur "valuable advice". Then I will not give $0.05 for you C. My efficiency in C does not require ur evaluation and my requirement in my project far exceeds and involves in improving the efficiency of my controller so OBVIOUSLY i'm confident in my knowledge abt my controller. Other than commenting on my efficiency i wud appreciate sum genuine TECHNICAL advice. swapna.
"you dont need to tell me this as it is an INTEL cookbook. i can perfectly well realise that." I'm curious, then, why you keep stating that it refers to Philips chips? If you want to be taken seriously I suggest you avoid using the following childish nonsense: u urself cud wudnt ur abt wud sum
Perhaps Keil could apply a spell checker for all posts onto the board, and fire an error if any SMS-speak is detected in the post. Something along the lines of "There is no 160 character limit on this board. Please use FULL words. Or go post somewhere else."
since i was not able to understand the codes it had in assembly OBVIOUSLY i'm confident in my knowledge abt my controller That "confidence" is not worth much when you can not even read assembler. Erik
I still can't get over the open acrimony toward SMS-style word abbreviation here. Did any of you that read his post actually have to stutter for even a moment to understand what he meant by those abbreviations? If not, then he's communicating effectively enough for something informal like this. People on this board make the most abhorrent grammar errors every day--including some of those who are most vocal about SMS hatred. No one spends all day correcting those, so perhaps we should just let it go.
"I still can't get over the open acrimony toward SMS-style word abbreviation here. Did any of you that read his post actually have to stutter for even a moment to understand what he meant by those abbreviations?" It took me considerably longer to read and understand his post than it would have without the SMS. English is my first language, I read it quickly without having to think about the meaning of the words. When it is riddled with SMS, however, I frequently have to stop and mentally translate the abbreviations before I can make sense of it. If English were not my first language I doubt I'd be able to make sense of it at all. "If not, then he's communicating effectively enough for something informal like this." He could communicate much more effectively if he wrote English, which he is clearly capable of, rather than SMS. Making one's question as clear and easy to understand as possible is the best way to elicit a useful response, and shows that one at least has some respect for those one is asking for free advice from. "People on this board make the most abhorrent grammar errors every day--including some of those who are most vocal about SMS hatred. No one spends all day correcting those" Of course. The essential difference, though, is that grammatical errors are unintentional, whereas use of SMS is a conscious decision. That is why nobody wastes time correcting them. You'll notice that some posters don't have a very good grasp of English - nobody criticises them either. In fact, I make a lot of effort to try to understand broken English. "so perhaps we should just let it go." In some cases I don't think so. Generally I just ignore posts that contain a lot of SMS, but when the poster combines this with a refusal to take the advice he's been given I sometimes feel the need to say something.
Jay, I still can't get over the open acrimony toward SMS-style word abbreviation here. Did any of you that read his post actually have to stutter for even a moment to understand what he meant by those abbreviations? Yes, I had to decipher, rather than read. Many have stated "I write SMS because it is faster to write" OK, so you one save some time and the many readers will have to spend more time deciphering your message. Thus someone using SMS is, in fact saying "my time is more valuable than all other members of the forum combined". People on this board make the most abhorrent grammar errors every day-- Sure, but that is not done intentionally to save time at the cost of others. Erik
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