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counter interrupt programming

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This topic has 1 reply, 2 voices, and was last updated 11 years, 7 months ago by AJISH ALFRED.

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May 13, 2013 at 4:23 pm #2401

Tejminder kaur
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hello

i am using p89v51rd2 controller to calculate rpm of motor using gear tooth sensor.

output of sensor is in pulses and is act as interrupt input to microcontroller .

can you please guide in programming of this.

May 14, 2013 at 4:25 am #9740

AJISH ALFRED
Participant

Hi Tejminder,

Configure any counter in the ‘event counting mode’ which can count the pulses. Use another counter which can fire after 1second and when it does it will output the evnt counter value. Now multiply tha value with 60 and you will get the RPM.
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