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05/22/06 08:15
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 		 #116799 - measuring illumination by tsl220
hello.

i have to measure the illuminantion in the range of 1-1000uW/cm^2 with a tsl220.
i have no idea how the code shall look like...
my problem is that i've never worked with light to frequency converters before and to be honest i'm not that genius in programming. I have to get this porject work until wednesday so i'd be very happy over anyything that could help me to get this done qiuckly.

i've found the data sheet and it says that its(tsl220) frequency may be measured by using pulse counting, period timing or....
further it says that the output voltage is a pulse train and its frequecy is proportional to the light intensity(irradiance) on the photodiode. by the way the tsl220 consists of a large-area photo diode and a current-to-frequency converter.
i thought that this information could be helpul.

please help me as quick as possible to get this done in time, i'd be really very very thankful.
yours
mike

List of 51 messages in thread
TopicAuthorDate
measuring illumination by tsl220            01/01/70 00:00      
   sh.. project            01/01/70 00:00      
   PROCESSOR !            01/01/70 00:00      
      processor 80c552            01/01/70 00:00      
         why CCU? KISS            01/01/70 00:00      
            ccu is necessary            01/01/70 00:00      
               who is making it?            01/01/70 00:00      
                  well, thats true but....            01/01/70 00:00      
         Look at this            01/01/70 00:00      
   any programmes?            01/01/70 00:00      
      why not source code 1??            01/01/70 00:00      
         programmes=source codes;)            01/01/70 00:00      
            I agree            01/01/70 00:00      
               ok            01/01/70 00:00      
                  You are a lazy bone!!            01/01/70 00:00      
               source code 1            01/01/70 00:00      
                  you have still not explained ...            01/01/70 00:00      
   You need frequency counter. Look here.            01/01/70 00:00      
   elaborationg on simple solution            01/01/70 00:00      
      relax            01/01/70 00:00      
         blatantly untrue            01/01/70 00:00      
            please apologize            01/01/70 00:00      
               Timer2-what for?            01/01/70 00:00      
                  here's the exact definition of the prblm            01/01/70 00:00      
                     how do i attach files in the postings?            01/01/70 00:00      
                        Posting file listings            01/01/70 00:00      
                     Have a look again...            01/01/70 00:00      
                        ok, i'll do this immediately.            01/01/70 00:00      
                     Capture registers            01/01/70 00:00      
                     E-mail address            01/01/70 00:00      
                        mail adress            01/01/70 00:00      
   next problem            01/01/70 00:00      
      not spilling the beans            01/01/70 00:00      
   link forgotten sorry            01/01/70 00:00      
      In english...            01/01/70 00:00      
      CPT registers            01/01/70 00:00      
         maybe at this time he is in his little            01/01/70 00:00      
            happy about all postings            01/01/70 00:00      
               re flag            01/01/70 00:00      
                  re:re:flags            01/01/70 00:00      
                     You have to set the flag!            01/01/70 00:00      
         Do you have a simulator?            01/01/70 00:00      
            re:simulator            01/01/70 00:00      
               Single Stepping            01/01/70 00:00      
   save capture before next capture            01/01/70 00:00      
      Capture registers            01/01/70 00:00      
   The cookbook            01/01/70 00:00      
   code finished, but small error            01/01/70 00:00      
      atomicity            01/01/70 00:00      
      Who is Hans Meiser???            01/01/70 00:00      
         hans meiser!            01/01/70 00:00      

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