86 lines
2.2 KiB
C
86 lines
2.2 KiB
C
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#include <inttypes.h>
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#include <stdlib.h>
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#include <avr/io.h>
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#include "../lib/apps.h"
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#include "../lib/bughal.h"
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#include "../lib/util.h"
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#include "../lib/music.h"
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#include "../lib/usart.h"
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/**
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* sound detection mode
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* beeps,blinks and moves when sound is detected
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* - beep on/off left switch (short)
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* - motor on/off right switch (short)
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*/
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static void sound_detection(void)
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{
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static timer_t mytimer;
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static uint16_t maxval; // maximum of ADC values read during the las timer interval
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static uint16_t lastmaxval; // maximum of values during last timer interval
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uint16_t curval; // value on D5 (pin of piezo,the other is on GND)
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static bool signaling; // are we currently signaling (beeping, blinking etc...)
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static bool sound_on; // should sound be on when signaling
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static bool motor_on; // should motor be on when signaling
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if (mode_uninitialized) { //init after mode change
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maxval = 0;
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lastmaxval = 0;
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mode_uninitialized = false;
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signaling = false;
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sound_on = true;
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motor_on = true;
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init_mic();
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init_leds();
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timer_set(&mytimer, 10);
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}
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/*single ADC measurement*/
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curval = ADCW; // read result
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maxval = (curval > maxval) ? curval : maxval;
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/*check for Buttons*/
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if (btn_state(BTNST_SUP, BTN_LEFT)) {
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button_clear(BTN_LEFT);
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sound_on = !sound_on;
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}
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if (btn_state(BTNST_SUP, BTN_RIGHT)) {
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button_clear(BTN_RIGHT);
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motor_on = !motor_on;
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}
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if (timer_expired(&mytimer)) {
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if (signaling) {
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//turn off sound
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music_setNote(NOTE_PAUSE, 0); //mute
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set_motor(MOTOR_OFF);
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//re-init mic
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init_mic();
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led_off(LED_R | LED_L);
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timer_set(&mytimer, 1);
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signaling = false;
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lastmaxval = 10000;
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} else { //sound was off wer're in measuring mode
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if (maxval > lastmaxval) {
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USART0_put_uint16(maxval);
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USART0_crlf();
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led_on(LED_R | LED_L);
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init_buzzr(); //buzzr to output
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if (sound_on)
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music_setNote(NOTE_C, 5);
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if (motor_on)
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set_motor(MOTOR_ON);
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signaling = true;
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timer_set(&mytimer, 5); //sound duration
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} else {
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timer_set(&mytimer, 1);
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}
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lastmaxval = maxval;
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maxval = 0;
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}//end if soundon
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}//end if timer_expired
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} /* end mode0 */
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REGISTER(sound_detection)
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