/* $Id$ */ /* * Copyright (c) 2011 Dimitri Sokolyuk * * Permission to use, copy, modify, and distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ #include #include #include #include "kernel.h" #include "tasks.h" #define MUXMASK 0x07 void adc(void *arg) { struct adcarg *a = (struct adcarg *)arg; uint8_t i = 0; ADCSRA |= (_BV(ADEN) | ADC_FLAGS); for (;;) { for (i = 0; i < ADCCHANNELS; i++) { ADMUX = (i & MUXMASK) | _BV(ADLAR); ADCSRA |= _BV(ADSC); loop_until_bit_is_clear(ADCSRA, ADSC); lock(Adc); a->value[i] = ADCH; /* ADLAR: 8-bit */ unlock(Adc); } lock(Display); fprintf(stderr, "\n%8lx%8x", now(), a->value[0]); unlock(Display); sleep(0, 100000); } }