topic Frequency Counter in LPC Microcontrollers https://community.nxp.com/t5/LPC-Microcontrollers/Frequency-Counter/m-p/579590#M20072 <HTML><HEAD></HEAD><BODY><STRONG>Content originally posted in LPCWare by santner on Wed May 16 05:48:28 MST 2012</STRONG><BR /><SPAN>I'm trying to setup a counter using TIMER0.&nbsp; I have the LPC4350 Hitex board and I'm using pin 1.17 as my external clock input (this is coming from a function generator set at 100kHz, 3.3v, 50% duty cycle).&nbsp; In the code I first setup the pin as an input configured for FUNCTION4 (T0_CAP3 Input).&nbsp; I then configure the GIMA to route this pin to TIMER0.&nbsp; I also set TIMER0-&gt;CTCR = 0xd.&nbsp; Finally, I enable the timer.&nbsp; After some analysis what I find is that there is a scale factor of 1/8.&nbsp; So rather than seeing 100,000 ticks per second, I'm seeing 100,000/8 ticks per second.&nbsp; Any ideas or examples which show how to accomplish this?</SPAN></BODY></HTML> Wed, 15 Jun 2016 19:04:41 GMT lpcware 2016-06-15T19:04:41Z Frequency Counter https://community.nxp.com/t5/LPC-Microcontrollers/Frequency-Counter/m-p/579590#M20072 <HTML><HEAD></HEAD><BODY><STRONG>Content originally posted in LPCWare by santner on Wed May 16 05:48:28 MST 2012</STRONG><BR /><SPAN>I'm trying to setup a counter using TIMER0.&nbsp; I have the LPC4350 Hitex board and I'm using pin 1.17 as my external clock input (this is coming from a function generator set at 100kHz, 3.3v, 50% duty cycle).&nbsp; In the code I first setup the pin as an input configured for FUNCTION4 (T0_CAP3 Input).&nbsp; I then configure the GIMA to route this pin to TIMER0.&nbsp; I also set TIMER0-&gt;CTCR = 0xd.&nbsp; Finally, I enable the timer.&nbsp; After some analysis what I find is that there is a scale factor of 1/8.&nbsp; So rather than seeing 100,000 ticks per second, I'm seeing 100,000/8 ticks per second.&nbsp; Any ideas or examples which show how to accomplish this?</SPAN></BODY></HTML> Wed, 15 Jun 2016 19:04:41 GMT https://community.nxp.com/t5/LPC-Microcontrollers/Frequency-Counter/m-p/579590#M20072 lpcware 2016-06-15T19:04:41Z