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As a student being forced to learn the LPC21xx microcontrollers as part of my degree, I have found getting information and help extremely poor.
Everything points you in the direction of the data sheet/ user manual, but the reason Im looking for help else where is because Im not getting what I need from the manual. How backwards is that!
Also when you post a thread on this site no one gets back to you. Does anyone actually run the site? and does anyone actually reply to technical questions that actually may help others at a later time? I think not. I think Ive got a better chance of recieving a reply from this rant!
I think ARM and Keil should be ashamed and take a leaf out of Microchips book, as the help avaialable for the many devices they supply is vast!
Rant over
.... the I have not seen a specific, well documented problem posted by the OP
Erik
... that I did not go back to the threadlist before posting the above. Thus my previous post was too hasty
usually, complaints about support appear in the same thread.
Evil laughter ;)
>> >>Everything points you in the direction of the data sheet/ user manual, but the reason Im looking >>for help else where is because Im not getting what I need from the manual. How backwards is that! >>
Just out of curiosity can you give us a couple of question examples?
Alex
My original task given to me by my lecturer was to continuously read three seperate channels of the A/D in programmable mode. In heinsight, I now know that the terminology given to me by my lecturer was intended to make me think about how his terminology related to the terminology used in the user manual.
As you can imagine, that when under time constraints and when your new to these user manuals, let alone microcontrollers in general, its a steap learning curve, and when you cant get access to easy to understand examples, then it can be quite frustrating.
Although it is quite funny how much of a response has been generated on this thread (even though it wasnt intended to ask for answers to a technical question) because it has kind of proved my original point that I have got more of a response from this thread than on my original thread, which I have only got one reply, and that was generated from this thread!
Mwah
I appreciate you comments, but really, if you have the skills to help others do you not think that is a better use of your time rather than commenting on a thread like this...
Although it is quite funny how much of a response has been generated on this thread (even though it wasnt intended to ask for answers to a technical question) because it has kind of proved my original point that I have got more of a response from this thread than on my original thread, which I have only got one reply, and that was generated from this thread! everybody can discuss an opinion, only people that know the technical area of your question can/should answer there. You seem to believe that a lot of forum participants have worked with things similar to yours,
"if you have the skills to help others do you not think that is a better use of your time rather than commenting on a thread like this..."
Lots of people "Have the skill". But that doesn't mean the same people have recent knowledge (or knowledge at all) about a specific feature of a specific processor.
Having the skills just means that lots of people know how to read datasheets and pick up the relevant information. The question is - why should people do that?
Can you come back with one single reason exactly _why_ I should read the relevant paragraphs of the ADC for your processor and then give you an answer? I haven't worked with any LPC21xx processor for maybe 5 years. And when I did, I did use interrupts and burst-mode conversions.
That your thread got unanswered is just that the only people who work with a LPC21xx and come to this forum come here to _get_ help - not to give help. The ones who _could_ give help have most probably already moved to other processors, for the simple reason that they work actively as developers. And whenever it's time to design the next product, you do a prestudy to figure out the best processor for that new product. And it is then almost always more economical to progress to newer processors as they are released, since newer processors tends to either give same performance at a lower power consumption, or more performance at same cost as the previous generation.
This just is not a forum where there are people payed to help users of random ARM processors. Sharing of knowledge works best when you find a forum where the other members do work with similar tools/equipment. In this case, most people here uses the same tools - Keil compiler and maybe Keil JTAG adapter and maybe basing products on Keil development boards. But this is not a site where most people uses the same processor. This is definitely not the forum to frequent if you specifically want help with specific NXP chips.
My answer in the ADC thread was specifically aimed to show you that your claims about the NXP manuals lacking the information was wrong. When people do get suggestions to Please read the manual, it's because they have asked a question that is already well covered by that FM.
One of the most important skills to learn, is to read datasheets. It is way more important to learn, than to hand in a "perfect" project. It's the skill to extract information from datasheets, Google etc that affects if a person will be an efficient developer or not. Because reading skills can solve an issue in 10 minutes, while a route through a web forum can produce the same information after one hour or one day or maybe one week. And that single project may contain 10 stumbling stones. 10 * 10 minutes going the datasheet route. Or 10 * 1 days or more if going the forum route. So the forum route normally means a failed deadline, because the response time and total throughput was too low.
To the OP, Tom Bulloch:
1. I am not a native English speaker. 2. I am NOT one of the experienced and clever people contributing to this forum. 3. Sometimes, I will try to provide some information to this forum; but those information may not be correct or useful. I just think that "better than nothing".
Recently, one developer decided to use LPC2148, and were trying to get some help from this forum. See this link: http://www.keil.com/forum/21578/
I have some experience in LPC213x/LPC23xx/LPC1768; and very limited experience in bootloader. I tried to provide some information to Urvish Gohil, the OP of the thread of 21578.
However, most information I provided were based on incorrect assumptions; most links I provided were irrelative. Urvish Gohil solved his problem (I hope so.) mainly by himself.
As christian crosa already pointed out. I think that this forum is very good to find some answers, provided that:
Issues are correctly explained by OP OP did try to solve the issue himself before and he is trying to find a solution for a struggle during the implementation. Question asked are punctual and not too over general.
I don't have any experience in the ADC of LPC21xx, and I am busy recently.
Hi christian crosa,
What tag did you use for the list format? Could you please teach me? 1. 2. 3.
Why don't you view the HTML code of this page? You'll see that the tags are [ul] and [li].
What tag did you use for the list format? Could you please teach me?
I use the standard html tags for listing , example:
< ul > < li >Coffee< /li > < li >Milk< /li > < /ul >
will give you ( before remove white spaces on tags):
if you have the skills to help others
there has been many posts where someone had the 'skills' but not the time. If the answer to a post requires work most do not have the luxury of taking time away from the time they are paid for. Thus, most answers anyone get from (I guess) anyone are those where all it took to answer was to type the answer.
then of course there are a [very] few who appear to have plenty of time, make many posts, but really know nothing apart from how to search using Google.
christian and Mike, thanks.