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???
07/12/09 20:00
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 		 #167139 - Use a transition-activated external interrupt
Responding to: ???'s previous message
Bing said:
I have previously connect the PIR sensor to the External Interrupt Pin to turn on/off a light connected to pin p1.7 AND WHAT IT DOES IS IT MADE THE LIGHT BLINK ALL THE TIME.


When the external interrupt is level-activated, this can happen. Use a transition-activated interrupt instead.

Read also page 16 of this link

http://www.nxp.com/acrobat_d...WARE_1.pdf


Kai



List of 39 messages in thread
TopicAuthorDate
PIR Sensor Does not work            01/01/70 00:00      
   Open-collector alarm output            01/01/70 00:00      
      Yes I know            01/01/70 00:00      
         How do you know it doesn't work?            01/01/70 00:00      
            IT DOES NOT TURN OFF THE LED            01/01/70 00:00      
               Forgot about the "modify" timestamp?            01/01/70 00:00      
                  You are really sick            01/01/70 00:00      
                     intuition problematic for technical discussion            01/01/70 00:00      
                  That's always the trouble with allowing editing!            01/01/70 00:00      
                     Editing is not the problem...            01/01/70 00:00      
                     Isn't this ?            01/01/70 00:00      
         Sensitive pir, expected behaviour or sw error?            01/01/70 00:00      
         Use a transition-activated external interrupt            01/01/70 00:00      
            Look            01/01/70 00:00      
               maybe            01/01/70 00:00      
                  Generation gap ?            01/01/70 00:00      
                     Threshold            01/01/70 00:00      
                        Menus ?            01/01/70 00:00      
                           Cheap portable            01/01/70 00:00      
                              Not just cheap            01/01/70 00:00      
                                 menus            01/01/70 00:00      
                                    Not easy if you don't understand the terminology            01/01/70 00:00      
                                       Lessons            01/01/70 00:00      
                                          Own curiosity is the most important factor            01/01/70 00:00      
                                             True words.            01/01/70 00:00      
                           Lots of fine print            01/01/70 00:00      
                              back to the topic            01/01/70 00:00      
                                 Similar to how you let an 8051 output sink to ground            01/01/70 00:00      
                                 What is the purpose of your scheme?            01/01/70 00:00      
                              age            01/01/70 00:00      
                                 It's all a matter of what you're accustomed to using            01/01/70 00:00      
                                    USB control box much wanted            01/01/70 00:00      
   from ready made            01/01/70 00:00      
   I have used it ones            01/01/70 00:00      
      Confusing...            01/01/70 00:00      
         I am sure            01/01/70 00:00      
            inside PIR            01/01/70 00:00      
   you need a frnsel lens            01/01/70 00:00      
      Sherif Gamal            01/01/70 00:00      

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