SV: [Icc-avr] ATMega644p -> ADC

[Rainer Dehnert]

Hi Steven,

I included <iom644pv.h>. Should be the right one...

Thanks
Rainer


Steven Lose schrieb:
> Hi.
> have you included the right target header file?
>
> Med venlig hilsen / Best regards / mit freundlichen Grüßen
>
> EC POWER A/S
>
> Steven Lose
>
> Software Ingeniør
>
> Tlf.: +45 87434100
>
> Direkte tlf. +45 58286608
>
> Email: sl at ecpower.dk
>
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>
> -----Oprindelig meddelelse-----
> Fra: icc-avr-bounces at imagecraft.com [mailto:icc-avr-bounces at imagecraft.com] På vegne af Rainer Dehnert
> Sendt: 28. september 2008 00:29
> Til: icc-avr at imagecraft.com
> Emne: [Icc-avr] ATMega644p -> ADC
>
> Hi,
>
> using ATMega644p at 20MHz with my desired settings:
> - 1,1V internal Reference
> - Auto trigger @ timer0 compare match
> - division factor 128 -> 156,250kHz
>
>
> #pragma interrupt_handler adc_isr:iv_ADC
>
> //globals
> unsigned int adc_data[9];
>
> //adc isr
> void adc_isr(void) {
>   static unsigned char input_index;
>  
>   adc_data[input_index] = ADC;
>  
>   if(++input_index == 8)
>     input_index = 0;
>    
>   ADMUX = (0b10000000 + input_index);
>   
>   putchar('a');  //only for debugging
> }
>
> //adc init
> void adc_init(void) {
>   ADMUX  = 0;
>   ADCSRA = 0b10101111;
>   ADCSRB = 0b00000011;
>   ADC    = 0;
>   DIDR0  = 0b11111111;
> }
>
>
> Running the code above the adc-isr is never executed.
> I called SEI() within 'init_devices' and the timer0_comp_isr is
> executed every 1,022ms correctly.
>
> What's going wrong?
>
> Many thanks in advance,
> Rainer
>
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