Comments on: Analogue to Digital Conversion Interrupts on an ATmega168A http://www.protostack.com/blog/2011/04/analogue-to-digital-conversion-interrupts-on-an-atmega168a/ Atmega168 development kits, AVR Development boards, Prototyping boards and Electronic components Tue, 26 Mar 2013 12:09:58 +0000 hourly 1 http://wordpress.org/?v=3.4.2 By: protostackadmin http://www.protostack.com/blog/2011/04/analogue-to-digital-conversion-interrupts-on-an-atmega168a/#comment-3646 protostackadmin Wed, 06 Apr 2011 19:29:59 +0000 http://www.protostack.com/blog/?p=272#comment-3646 Well spotted. I've updated the post now. Well spotted. I’ve updated the post now.

]]> By: Daid http://www.protostack.com/blog/2011/04/analogue-to-digital-conversion-interrupts-on-an-atmega168a/#comment-3645 Daid Wed, 06 Apr 2011 12:03:00 +0000 http://www.protostack.com/blog/?p=272#comment-3645 It doesn't take 128 clock cycles to take a ADC sample, it takes 13 ADC cycles to get the sample. Which is 128*13 clock cycles. On the 128 divider. It doesn’t take 128 clock cycles to take a ADC sample, it takes 13 ADC cycles to get the sample. Which is 128*13 clock cycles. On the 128 divider.

]]> By: Etienne http://www.protostack.com/blog/2011/04/analogue-to-digital-conversion-interrupts-on-an-atmega168a/#comment-3643 Etienne Wed, 06 Apr 2011 12:00:26 +0000 http://www.protostack.com/blog/?p=272#comment-3643 Just a small thing, as per ATMega168 datasheet conversion takes 13 ADC clock cycles, which is generated from mcu clock through the prescaler, so the conversion will take 13 x 128 mcu clock cycles with a prescaler set to 128 (and 25 x 128 mcu clock cycles for the first conversion). Just a small thing, as per ATMega168 datasheet conversion takes 13 ADC clock cycles, which is generated from mcu clock through the prescaler, so the conversion will take 13 x 128 mcu clock cycles with a prescaler set to 128 (and 25 x 128 mcu clock cycles for the first conversion).

]]> By: Tom http://www.protostack.com/blog/2011/04/analogue-to-digital-conversion-interrupts-on-an-atmega168a/#comment-3629 Tom Tue, 05 Apr 2011 13:53:35 +0000 http://www.protostack.com/blog/?p=272#comment-3629 Hello ! Great tutorial, however according to the Mega88 datasheet, you don't need to clear the ADIF flag in the interrupt routine, since it "is cleared by hardware when executing the corresponding interrupt handling vector". Best regards, Tom Hello !

Great tutorial, however according to the Mega88 datasheet, you don’t need to clear the ADIF flag in the interrupt routine, since it “is cleared by hardware when executing the corresponding interrupt handling vector”.

Best regards,
Tom

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