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added synth to mode1, major cleanup

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This commit is contained in:
john stone 2012-10-10 04:15:06 +02:00
parent c654c12385
commit 608ad6e2fe
4 changed files with 277 additions and 368 deletions
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50
firmware/lib/freq_table.h Normal file
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@ -0,0 +1,50 @@
const uint16_t freq_table[] PROGMEM = {
/*0x00*/ 0,
/*0x01*/ 130,
/*0x02*/ 137,
/*0x03*/ 145,
/*0x04*/ 154,
/*0x05*/ 163,
/*0x06*/ 173,
/*0x07*/ 183,
/*0x08*/ 194,
/*0x09*/ 206,
/*0x0a*/ 218,
/*0x0b*/ 231,
/*0x0c*/ 245,
/*0x0d*/ 259,
/*0x0e*/ 275,
/*0x0f*/ 291,
/*0x10*/ 308,
/*0x11*/ 327,
/*0x12*/ 346,
/*0x13*/ 367,
/*0x14*/ 388,
/*0x15*/ 412,
/*0x16*/ 436,
/*0x17*/ 462,
/*0x18*/ 489,
/*0x19*/ 518,
/*0x1a*/ 549,
/*0x1b*/ 582,
/*0x1c*/ 617,
/*0x1d*/ 653,
/*0x1e*/ 692,
/*0x1f*/ 733,
/*0x20*/ 777,
/*0x21*/ 823,
/*0x22*/ 872,
/*0x23*/ 924,
/*0x24*/ 979,
/*0x25*/ 1037,
/*0x26*/ 1099,
/*0x27*/ 1164,
/*0x28*/ 1233,
/*0x29*/ 1306,
/*0x2a*/ 1384,
/*0x2b*/ 1466,
/*0x2c*/ 1554,
/*0x2d*/ 1646,
/*0x2e*/ 1744,
/*0x2f*/ 1848,
};

275
firmware/lib/synth.c
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@ -1,204 +1,101 @@
#include <inttypes.h> #include <inttypes.h>
#include "synth.h" #include <avr/io.h>
#include "freq_table.h"
#include <avr/pgmspace.h>
#include <avr/interrupt.h> #include <avr/interrupt.h>
#define __DELAY_BACKWARD_COMPATIBLE__
#include <util/delay.h>
#include <stdlib.h>
#include <avr/pgmspace.h>
#include "freq_table.h"
void synth_init(void){
cli();
/*
* Timer 0
*/
/* set timer0 to CTC & prescaler 64 → 125kHz increment */
TCCR0A = (1 << WGM01);
TCCR0B = (1 << CS00) | (1 << CS01);
OCR0A = 4; /* TOP */
TCNT0 = 0;
/*enable interrupt */
TIMSK0 |= (1 << OCIE0A);
sei();
return;
}
void synth_deinit(void) {
cli();
TIMSK0 = 0;
sei();
return;
}
// sample rate is 8M / (3 * 64)
enum { enum {
channel_count = 3, SONG_LENGTH = 128,
//tick_length = 400, xxx = 0,
// tick_length = 256, c_0 = 0, cs0 = 1, d_0 = 2, ds0 = 3, e_0 = 4, f_0 = 5,
row_length = 4, fs0 = 6, g_0 = 7, gs0 = 8, a_0 = 9, as0 = 10, b_0 = 11,
pattern_length = 16 c_1 = 12, cs1 = 13, d_1 = 14, ds1 = 15, e_1 = 16, f_1 = 17,
fs1 = 18, g_1 = 19, gs1 = 20, a_1 = 21, as1 = 22, b_1 = 23,
c_2 = 24, cs2 = 25, d_2 = 26, ds2 = 27, e_2 = 28, f_2 = 29,
fs2 = 30, g_2 = 31, gs2 = 32, a_2 = 33, as2 = 34, b_2 = 35,
c_3 = 36, cs3 = 37, d_3 = 38, ds3 = 39, e_3 = 40, f_3 = 41,
fs3 = 42, g_3 = 43, gs3 = 44, a_3 = 45, as3 = 46, b_3 = 47,
}; };
static const synth_instrument_t instruments[] = { { 1 << 15, 100, 12, 0 }, { 0, const char music_data[2][SONG_LENGTH] PROGMEM = {
100, 12, 0 }, { 0, 200, 10, 0 }, { 1 << 13, 0, 0, 2 }, { 1 << 13, 0, 5, {
2 }, }; e_1, xxx, e_2, xxx, e_1, xxx, e_2, xxx, e_1, xxx, e_2, xxx, e_1, xxx, e_2, xxx,
a_0, xxx, a_1, xxx, a_0, xxx, a_1, xxx, a_0, xxx, a_1, xxx, a_0, xxx, a_1, xxx,
static const uint8_t wave_table[][2] = { { 0, WAVE_PULSE }, { 3, WAVE_PULSE }, { gs0, xxx, gs1, xxx, gs0, xxx, gs1, xxx, gs0, xxx, gs1, xxx, gs0, xxx, gs1, xxx,
7, WAVE_PULSE }, { 12, WAVE_PULSE }, { 256 - 4, 0xff }, a_0, xxx, a_1, xxx, a_0, xxx, a_1, xxx, a_0, xxx, a_0, xxx, b_0, xxx, c_1, xxx,
d_1, xxx, d_2, xxx, d_1, xxx, d_2, xxx, d_1, xxx, d_2, xxx, d_1, xxx, d_2, xxx,
{ 0, WAVE_PULSE }, { 2, WAVE_PULSE }, { 7, WAVE_PULSE }, { 10, WAVE_PULSE }, { c_1, xxx, c_2, xxx, c_1, xxx, c_2, xxx, c_1, xxx, c_2, xxx, c_1, xxx, c_2, xxx,
256 - 4, 0xff }, b_0, xxx, b_1, xxx, b_0, xxx, b_1, xxx, b_0, xxx, b_1, xxx, b_0, xxx, b_1, xxx,
a_0, xxx, a_1, xxx, a_0, xxx, a_1, xxx, a_0, xxx, xxx, xxx, xxx, xxx, xxx, xxx,
{ 0, WAVE_NOISE }, { 0, WAVE_PULSE }, { 0xff, 0xff }, }, {
e_3, e_3, e_3, e_3, b_2, b_2, c_3, c_3, d_3, d_3, e_3, d_3, c_3, c_3, b_2, b_2,
{ 0, WAVE_PULSE }, { 0xff, 0xff }, a_2, a_2, a_2, a_2, a_2, a_2, c_3, c_3, e_3, e_3, e_3, e_3, d_3, d_3, c_3, c_3,
b_2, b_2, b_2, b_2, b_2, b_2, c_3, c_3, d_3, d_3, d_3, d_3, e_3, e_3, e_3, e_3,
c_3, c_3, c_3, c_3, a_2, a_2, a_2, a_2, a_2, a_2, a_2, a_2, a_2, a_2, a_2, a_2,
xxx, xxx, d_3, d_3, d_3, d_3, f_3, f_3, a_3, a_3, a_3, a_3, g_3, g_3, f_3, f_3,
e_3, e_3, e_3, e_3, e_3, e_3, c_3, c_3, e_3, e_3, e_3, e_3, d_3, d_3, c_3, c_3,
b_2, b_2, b_2, b_2, b_2, b_2, c_3, c_3, d_3, d_3, d_3, d_3, e_3, e_3, e_3, e_3,
c_3, c_3, c_3, c_3, a_2, a_2, a_2, a_2, a_2, a_2, a_2, a_2, xxx, xxx, xxx, xxx,
}
}; };
static const uint8_t patterns[][pattern_length][2] PROGMEM = { { }, { { 33 - 12,
0 }, { 0, 0 }, { 0xff, 1 }, { 0, 0 }, { 33, 1 }, { 0xff, 1 }, { 33, 1 },
{ 0xff, 1 }, { 33, 1 }, { 0xff, 1 }, { 33 - 12, 1 }, { 0xff, 1 }, { 33
- 12, 1 }, { 0xff, 1 }, { 33, 1 }, { 0xff, 1 }, }, { { 28 - 12,
0 }, { 0, 0 }, { 0xff, 1 }, { 0, 0 }, { 28, 1 }, { 0xff, 1 }, { 28, 1 },
{ 0xff, 1 }, { 28, 1 }, { 0xff, 1 }, { 28 - 12, 1 }, { 0xff, 1 }, { 28
- 12, 1 }, { 0xff, 1 }, { 28, 1 }, { 0xff, 1 }, }, { { 0, 0 }, {
0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, {
57, 3 }, }, { { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 },
{ 0, 0 }, { 0, 0 }, { 0, 0 }, { 57, 4 }, },
{ { 60, 2 }, }, { { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 57, 2 }, { 0, 0 }, { static uint16_t osc0 = 0;
0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 55, 2 }, { static uint16_t osc1 = 0;
0, 0 }, { 57, 2 }, { 0, 0 }, }, { { 55, 2 }, }, { { 0, 0 }, { 0, 0 }, { static uint16_t sample = 0;
0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, static uint8_t row = 0;
0 }, { 0, 0 }, { 0, 0 }, { 57, 2 }, }, { { 55 - 3, 2 }, }, static uint16_t speedtime = 3000;
};
static const uint8_t pattern_table[][channel_count] = { { 1, 0, 5 }, ISR(TIMER0_COMPA_vect,ISR_NOBLOCK)
{ 1, 3, 0 }, { 1, 0, 7 }, { 1, 3, 6 }, { 2, 0, 7 }, { 2, 4, 8 }, { 2, 0, {
9 }, { 2, 4, 0 }, }; osc0 += pgm_read_word(&freq_table[ pgm_read_byte(&music_data[0][row])]);
enum { osc1 += pgm_read_word(&freq_table[ pgm_read_byte(&music_data[1][row])]);
pattern_table_length = sizeof(pattern_table) / sizeof(pattern_table[0]) if (++sample == speedtime ) {
};
static synth_channel_t channels[channel_count];
static int8_t sample;
static int8_t tick;
static int8_t row;
static int8_t seq;
/* PROTOTYPES */
uint8_t synth_mix(void);
static uint8_t timeslots[SYNTH_BUFSIZE];
static uint8_t timeslots_write; // current write head
static uint8_t timeslots_read; // current read head
/*register for atomic ++ and -- */
register uint8_t timeslots_fill asm("r2");
static void enqueue_timeslot(uint8_t synthval);
static uint8_t dequeue_timeslot(void);
void synth_init(void) {
sample = 0; sample = 0;
tick = 0; if (speedtime > 600) speedtime -= 4;
if (++row == SONG_LENGTH) {
row = 0; row = 0;
seq = 0; if (speedtime <= 600) speedtime = 3000;
timeslots_fill = 0; }
}
if (osc0 >= 0x8000) PORTB |= (1 << PORTB2);
else PORTB &= ~(1<< PORTB2);
if (osc1 >= 0xc000) PORTC |= (1 << PORTC5);
else PORTC &= ~(1<< PORTC5);
} }
inline uint8_t synth_mix(void) {
if (sample == 0) { // new tick
for (int i = 1; i < channel_count; i++) {
synth_channel_t* chan = &channels[i];
const synth_instrument_t* inst = &instruments[chan->inst_nr];
if (chan->level > inst->decay)
chan->level -= inst->decay;
else
chan->level = 0;
chan->pulse_width += inst->pulse_sweep;
chan->pos++;
if (wave_table[chan->pos][1] == 0xff)
chan->pos += wave_table[chan->pos][0];
// enter new rol
// w
if (tick == 0) {
uint8_t pattern_nr = pattern_table[seq][i];
uint8_t note = pgm_read_byte(&patterns[pattern_nr][row][0]);
if (note) { // new note, maybe?
if (note == 0xff) {
chan->level = 0;
} else {
chan->level = 80; // TODO: less?
chan->note = note;
chan->inst_nr =
pgm_read_byte(&patterns[pattern_nr][row][1]);
inst = &instruments[chan->inst_nr];
chan->pos = inst->wave_table_pos;
if (inst->pulse_width)
chan->pulse_width = inst->pulse_width;
}
}
}
}
}
if (++sample == 0) {
if (++tick == row_length) {
tick = 0;
if (++row == pattern_length) {
row = 0;
if (++seq == pattern_table_length) {
seq = 0;
}
}
}
}
uint8_t output = 0;
for (int i = 0; i < channel_count; i++) {
synth_channel_t* chan = &channels[i];
// const synth_instrument_t* inst = &instruments[chan->inst_nr];
chan->phase +=
pgm_read_word(&freq_table[(uint8_t)(chan->note + wave_table[chan->pos][0])]);
uint8_t amp;
switch (wave_table[chan->pos][1]) {
case WAVE_PULSE:
amp = -(chan->phase < chan->pulse_width);
break;
case WAVE_SAW:
amp = (chan->phase >> 8);
break;
case WAVE_NOISE: // shitty noise
chan->phase = (chan->phase >> 1) ^ (-(chan->phase & 1) & 0xb400);
amp = (chan->phase >> 8);
break;
default:
amp = 0;
break;
}
output += (((amp & 0xff) * chan->level) >> 8);
}
return output;
}
/* fill all the timeslots */
inline void synth_poll(void) {
/* refill timeslots queue */
// while (timeslots_fill < (SYNTH_BUFSIZE-1))
if (timeslots_fill < (SYNTH_BUFSIZE - 1))
enqueue_timeslot(synth_mix());
}
/* timeslot queue handling */
static inline void enqueue_timeslot(uint8_t synthval) {
timeslots[timeslots_write & SYNTH_BUFMASK] = synthval;
timeslots_fill++;
timeslots_write++;
}
static inline uint8_t dequeue_timeslot() {
uint8_t t = timeslots[timeslots_read & SYNTH_BUFMASK];
if (timeslots_fill) {
/* buffer not underrun... move forward in readbuffer */
timeslots_fill--;
timeslots_read++;
}
return t;
}
ISR(TIMER0_COMPA_vect) {
/* calculate next analog sample value in synth mixer:*/
OCR1B = dequeue_timeslot();
}

33
firmware/lib/synth.h
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@ -1,34 +1,5 @@
#ifndef SYNTH_H
#define SYNTH_H
#define SYNTH_BUFSIZE (16)
#define SYNTH_BUFMASK (0b00001111)
enum {
WAVE_OFF, WAVE_PULSE, WAVE_SAW, WAVE_NOISE
};
typedef struct {
uint8_t note;
uint8_t inst_nr;
uint8_t pos;
uint16_t phase;
uint16_t pulse_width;
uint8_t level; // envelop level
} synth_channel_t;
typedef struct {
uint16_t pulse_width;
uint8_t pulse_sweep;
uint8_t wave_table_pos;
uint8_t decay;
} synth_instrument_t;
void synth_init(void); void synth_init(void);
void synth_poll(void); void synth_deinit(void);
#endif

225
firmware/main.c
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@ -7,10 +7,13 @@
#include "main.h" #include "main.h"
#define ever (;;) /* awesomnes++ */
#include "lib/usart.h" #include "lib/usart.h"
#include "lib/bughal.h" #include "lib/bughal.h"
#include "lib/util.h" #include "lib/util.h"
#include "lib/music.h" #include "lib/music.h"
#include "lib/synth.h"
//operartion modes //operartion modes
#define MODE0 0 #define MODE0 0
@ -18,37 +21,40 @@
#define MODE2 2 #define MODE2 2
#define MODE3 3 #define MODE3 3
#define MODE4 4 #define MODE4 4
#define MODE5 5 //lightsensortest #define MODE5 5
#define NUM_MODES 6 #define NUM_MODES 6
uint8_t OpMode = MODE5; //Operation mode uint8_t OpMode = MODE5;
bool ModeChanged = true; uint8_t NextMode = MODE5;
bool mode_uninitialized = true;
// check if mode should be changed (one of the buttons long pressed) // check if mode should be changed (one of the buttons long pressed)
void modeswitch_poll(void) { void modeswitch_poll(void)
{
if (btn_state(BTNST_LUP, BTN_LEFT)) { if (btn_state(BTNST_LUP, BTN_LEFT)) {
//opmode - //opmode -
OpMode = (0 == OpMode) ? (NUM_MODES - 1) : (OpMode - 1); NextMode = (0 == OpMode) ? (NUM_MODES - 1) : (OpMode - 1);
ModeChanged = true; mode_uninitialized = true;
button_clear(BTN_LEFT); button_clear(BTN_LEFT);
}; };
if (btn_state(BTNST_LUP, BTN_RIGHT)) { if (btn_state(BTNST_LUP, BTN_RIGHT)) {
//opmode + //opmode +
ModeChanged = true; mode_uninitialized = true;
OpMode = ((NUM_MODES - 1) == OpMode) ? 0 : (OpMode + 1); NextMode = ((NUM_MODES - 1) == OpMode) ? 0 : (OpMode + 1);
button_clear(BTN_RIGHT); button_clear(BTN_RIGHT);
}; };
return; return;
} }
;
/* sound detection mode /**
* sound detection mode
* beeps,blinks and moves when sound is detected * beeps,blinks and moves when sound is detected
* - beep on/off left switch (short) * - beep on/off left switch (short)
* - motor on/off right switch (short) * - motor on/off right switch (short)
*/ */
void do_mode0(void)
void do_mode0(void) { {
static timer_t mytimer; static timer_t mytimer;
static uint16_t maxval; //maximum of ADC values read during the las timer interval static uint16_t maxval; //maximum of ADC values read during the las timer interval
static uint16_t lastmaxval; //maximum of values during last timer interval static uint16_t lastmaxval; //maximum of values during last timer interval
@ -57,17 +63,17 @@ void do_mode0(void) {
static bool sound_on; //should sound be on when signaling static bool sound_on; //should sound be on when signaling
static bool motor_on; //should motor be on when signaling static bool motor_on; //should motor be on when signaling
if (ModeChanged) { //init after mode change if (mode_uninitialized) { //init after mode change
maxval = 0; maxval = 0;
lastmaxval = 000; lastmaxval = 000;
ModeChanged = false; mode_uninitialized = false;
signaling = false; signaling = false;
sound_on = true; sound_on = true;
motor_on = true; motor_on = true;
init_mic(); init_mic();
init_leds(); init_leds();
timer_set(&mytimer, 10); timer_set(&mytimer, 10);
}; }
// single ADC measurement // single ADC measurement
curval = ADCW; // read result curval = ADCW; // read result
@ -107,57 +113,48 @@ void do_mode0(void) {
timer_set(&mytimer, 5); //sound duration timer_set(&mytimer, 5); //sound duration
} else { } else {
timer_set(&mytimer, 1); timer_set(&mytimer, 1);
}; }
lastmaxval = maxval; lastmaxval = maxval;
maxval = 0; maxval = 0;
}; //end if soundon } //end if soundon
}; //end if timer_expired } //end if timer_expired
} } /* end mode0 */
;
//end do_mode0
/* soundtest mode, just play single tone /**
* - left buttn: lower frequency * do crazy sytesizer mode
* - right buttn: increase frequency *
*/ */
void do_mode1(void)
{
if (mode_uninitialized) {
mode_uninitialized = false;
synth_init();
}
void do_mode1(void) { /*deinialisation required*/
static uint16_t tone; if(OpMode != NextMode){
if (ModeChanged) { synth_deinit();
ModeChanged = false; }
tone = 1000; return;
music_setNote(tone, 0);
init_leds();
led_off(LED_L | LED_R);
};
if (btn_state(BTNST_SUP, BTN_LEFT)) {
button_clear(BTN_LEFT);
tone += 10;
music_setNote(tone, 0);
};
if (btn_state(BTNST_SUP, BTN_RIGHT)) {
button_clear(BTN_RIGHT);
tone -= 10;
music_setNote(tone, 0);
};
} }
;
/* crazymoves mode
/**
* crazymoves mode
* - play random sounds and move in random fashion * - play random sounds and move in random fashion
*/ */
void do_mode2(void)
void do_mode2(void) { {
static timer_t mytimer; static timer_t mytimer;
uint8_t max = 50; uint8_t max = 50;
uint8_t min = 5; uint8_t min = 5;
uint16_t maxfreq = 5000; uint16_t maxfreq = 5000;
uint16_t minfreq = 1000; uint16_t minfreq = 1000;
if (ModeChanged) { if (mode_uninitialized) {
ModeChanged = false; mode_uninitialized = false;
music_setNote(NOTE_PAUSE, 4); //mute music_setNote(NOTE_PAUSE, 4); //mute
timer_set(&mytimer, 10); timer_set(&mytimer, 10);
init_leds(); init_leds();
@ -189,31 +186,32 @@ void do_mode2(void) {
//decide if to play sound (70% chance) //decide if to play sound (70% chance)
if (rand() % 10 > 2) { if (rand() % 10 > 2) {
music_setNote((rand() % (maxfreq - minfreq)) + minfreq, 0); music_setNote((rand() % (maxfreq - minfreq)) + minfreq,
0);
} }
timer_set(&mytimer, (rand() % (max - min)) + min); timer_set(&mytimer, (rand() % (max - min)) + min);
}; //end if timer_expired }//end if timer_expired
} }
;
/* just blink mode
/**
* just blink mode
* - left/right button switch motor off/on * - left/right button switch motor off/on
*/ */
void do_mode3(void)
void do_mode3(void) { {
static timer_t mytimer; static timer_t mytimer;
static bool blink; static bool blink;
if (ModeChanged) { if (mode_uninitialized) {
init_leds(); init_leds();
ModeChanged = false; mode_uninitialized = false;
music_setNote(NOTE_PAUSE, 4); //mute music_setNote(NOTE_PAUSE, 4); //mute
set_motor(MOTOR_OFF); set_motor(MOTOR_OFF);
timer_set(&mytimer, 10); timer_set(&mytimer, 10);
blink = false; blink = false;
}; }
if (timer_expired(&mytimer)) { if (timer_expired(&mytimer)) {
if (!blink) { if (!blink) {
@ -234,30 +232,31 @@ void do_mode3(void) {
button_clear(BTN_LEFT); button_clear(BTN_LEFT);
set_motor(MOTOR_OFF); set_motor(MOTOR_OFF);
}; }
if (btn_state(BTNST_SUP, BTN_RIGHT)) { if (btn_state(BTNST_SUP, BTN_RIGHT)) {
button_clear(BTN_RIGHT); button_clear(BTN_RIGHT);
set_motor(MOTOR_ON); set_motor(MOTOR_ON);
}; }
} }
;
/* ggrbug mode
/**
* ggrbug mode
* - simulate geiger counter sounds * - simulate geiger counter sounds
*/ */
void do_mode4(void)
void do_mode4(void) { {
uint8_t max = 200; uint8_t max = 200;
uint8_t min = 10; uint8_t min = 10;
static timer_t mytimer; static timer_t mytimer;
static bool blink; static bool blink;
if (ModeChanged) { if (mode_uninitialized) {
init_leds(); init_leds();
music_setNote(NOTE_PAUSE, 0); music_setNote(NOTE_PAUSE, 0);
ModeChanged = false; mode_uninitialized = false;
timer_set(&mytimer, 10); timer_set(&mytimer, 10);
blink = false; blink = false;
}; };
@ -287,81 +286,75 @@ void do_mode4(void) {
set_motor(MOTOR_OFF); set_motor(MOTOR_OFF);
music_setNote(NOTE_PAUSE, 0); music_setNote(NOTE_PAUSE, 0);
timer_set(&mytimer, (rand() % (max - min)) + min); timer_set(&mytimer, (rand() % (max - min)) + min);
blink = false; blink = false;
} }
} //end if timer_expired } //end if timer_expired
} }
;
void do_mode5(void) {
void do_mode5(void)
{
static bool discharge; static bool discharge;
static timer_t mytimer; static timer_t mytimer;
uint16_t led1; uint16_t led1;
uint16_t led2; uint16_t led2;
if (mode_uninitialized) {
if (ModeChanged) { //init after mode change mode_uninitialized = false;
ModeChanged = false;
set_motor(MOTOR_OFF); set_motor(MOTOR_OFF);
ADMUX = (1<<REFS0); //use VCC reference ADMUX = (1 << REFS0); //use VCC reference
ADCSRA = (1<<ADPS1) | (1<<ADPS0);// prescaler F_CPU/8 ADCSRA = (1 << ADPS1) | (1 << ADPS0); // prescaler F_CPU/8
ADCSRA |= (1<<ADEN); // ADC enable - turn it on ADCSRA |= (1 << ADEN); // ADC enable - turn it on
// do one conversion // do one conversion
ADCSRA |= (1<<ADSC); ADCSRA |= (1 << ADSC);
while (ADCSRA & (1<<ADSC) ) {} //wait for conversion to end while (ADCSRA & (1 << ADSC)) {
uint16_t __attribute__((unused)) dummy = ADCW; //read once } //wait for conversion to end
uint16_t __attribute__ ((unused)) dummy = ADCW; //read once
timer_set(&mytimer, 10); timer_set(&mytimer, 10);
discharge = true; discharge = true;
}; }
if (timer_expired(&mytimer)) { if (timer_expired(&mytimer)) {
if (discharge){ if (discharge) {
//discharge LED //discharge LED
//enable LED channels as output //enable LED channels as output
DDRC |= (1 << PORTC0) | (1 << PORTC1) | (1 << PORTC2) | (1 << PORTC3); DDRC |= (1 << PORTC0) | (1 << PORTC1) |
(1 << PORTC2) | (1 << PORTC3) ;
// discharge // discharge
PORTC = (PORTC & 0b11110000); PORTC = (PORTC & 0b11110000);
//set C0 and C2 to input (disable pullups) //set C0 and C2 to input (disable pullups)
DDRC &= ~( (1 << PORTC0) | (1 << PORTC2)); DDRC &= ~((1 << PORTC0) | (1 << PORTC2));
//pull ups off //pull ups off
PORTC &= ~( (1 << PORTC0) | (1 << PORTC2)); PORTC &= ~((1 << PORTC0) | (1 << PORTC2));
discharge = false; discharge = false;
} else { } else {
//make a measurement
// single measurement // single measurement
ADMUX = (ADMUX & ~(0x1F)) | 0; // select channel 0 ADMUX = (ADMUX & ~(0x1F)) | 0; // select channel 0
ADCSRA |= (1<<ADSC); // start single conversion ADCSRA |= (1 << ADSC); // start single conversion
while (ADCSRA & (1<<ADSC) ) {}; // wait for conversion to end while (ADCSRA & (1 << ADSC)) ; // wait for conversion to end
led1 =ADCW; // read result led1 = ADCW; // read result
ADMUX = (ADMUX & ~(0x1F)) | 2; // select channel 2 ADMUX = (ADMUX & ~(0x1F)) | 2; // select channel 2
ADCSRA |= (1<<ADSC); // start single conversion ADCSRA |= (1 << ADSC); // start single conversion
while (ADCSRA & (1<<ADSC) ) {}; // wait for conversion to end while (ADCSRA & (1 << ADSC)) ; // wait for conversion to end
led2 =ADCW; // read result led2 = ADCW; // read result
// USART0_putc('1');USART0_putc(':');USART0_put_uint16(led1);USART0_crlf(); #if 0
// USART0_putc('2');USART0_putc(':');USART0_put_uint16(led2);USART0_crlf(); USART0_putc('1');USART0_putc(':');USART0_put_uint16(led1);USART0_crlf();
music_setNote(400+((0x1ff-led1)+(0x1ff-led2))*5,0); USART0_putc('2');USART0_putc(':');USART0_put_uint16(led2);USART0_crlf();
#endif
music_setNote(400 +((0x1ff - led1) + (0x1ff - led2)) * 5, 0);
discharge = true; discharge = true;
} }
timer_set(&mytimer, 2); //relaunch timer
}//end if timer_expired
}//end mode5
timer_set(&mytimer, 2); void __attribute__ ((noreturn))
}; //end if timer_expired main(void)
{
}
;
//end do_mode5
/* our main method
* things happen right here
*/
void __attribute__((noreturn))
main(void) {
/* hardware initialisation: */ /* hardware initialisation: */
init_leds(); init_leds();
init_buzzr(); init_buzzr();
@ -372,10 +365,10 @@ main(void) {
timer_init(); timer_init();
music_init(); music_init();
/* here the show begins:*/sei(); /* here the show begins: */
sei();
for (;;) /* ever */{ for ever {
//do something
//main polling loop; //main polling loop;
button_poll(); button_poll();
modeswitch_poll(); modeswitch_poll();
@ -398,11 +391,9 @@ main(void) {
default: default:
do_mode0(); do_mode0();
break; break;
}; }
OpMode = NextMode;
}; }
/* never return 0; */
} }
;