| Line -... |
Line 1... |
| - |
|
1 |
// Knihovna pro generovani hudebnich zvuku dane frekvence a delky nebo |
| - |
|
2 |
// dane noty temperovaneho ladeni a delky. |
| - |
|
3 |
// |
| - |
|
4 |
// Pro gnerovani pouziva casovac T0, T1 a jednotku CCP1. |
| - |
|
5 |
// |
| - |
|
6 |
// POZOR -- POZOR -- POZOR |
| - |
|
7 |
// Pri nizsi frekvenci XTALu (nez asi 5MHz) je rezie preruseni tak velka, ze spotrebuje |
| - |
|
8 |
// veskery strojovy cas a uz nedojde k ukonceni rozehraneho tonu vyssi frekvence (z oktavy 7 |
| - |
|
9 |
// nebo nad cca 8KHz). Resenim je pouzit vlastni INT proceduru s minimalni rezii. |
| - |
|
10 |
// |
| - |
|
11 |
// (c)miho 2004, pefi 2004, |
| - |
|
12 |
// |
| - |
|
13 |
// Historie |
| - |
|
14 |
// 1.00 Uvodni verze |
| - |
|
15 |
// 1.01 Pridana podpora zapnuteho WDT |
| - |
|
16 |
|
| - |
|
17 |
// Konfiguracni parametry |
| - |
|
18 |
//#define SOUND_HI PIN_xx // Pozitivni vystup |
| - |
|
19 |
//#define SOUND_LO PIN_xx // Komplementarni vystup |
| - |
|
20 |
//#define SOUND_WDT 1 // Pokud je pouzit WDT |
| - |
|
21 |
#ifndef SOUND_CLOCK |
| - |
|
22 |
#define SOUND_CLOCK 4000000 // Frelvence krystalu v Hz |
| - |
|
23 |
#endif |
| - |
|
24 |
|
| - |
|
25 |
|
| - |
|
26 |
// Definice hudebnich tonu (not) pro proceduru SoundNote() |
| - |
|
27 |
#define SOUND_C 0 |
| - |
|
28 |
#define SOUND_Cis 1 |
| - |
|
29 |
#define SOUND_D 2 |
| - |
|
30 |
#define SOUND_Dis 3 |
| - |
|
31 |
#define SOUND_E 4 |
| - |
|
32 |
#define SOUND_F 5 |
| - |
|
33 |
#define SOUND_Fis 6 |
| - |
|
34 |
#define SOUND_G 7 |
| - |
|
35 |
#define SOUND_Gis 8 |
| - |
|
36 |
#define SOUND_A 9 |
| - |
|
37 |
#define SOUND_Ais 10 |
| - |
|
38 |
#define SOUND_H 11 |
| - |
|
39 |
#define SOUND_Space 12 // Pomlka |
| - |
|
40 |
|
| - |
|
41 |
|
| - |
|
42 |
// Prototypy verejnych procedur |
| - |
|
43 |
|
| - |
|
44 |
void SoundBeep(unsigned int16 Frequency, unsigned int16 Duration); |
| - |
|
45 |
// Predava se frekvence v Hz a doba trvani v ms (0 znamena ticho) |
| - |
|
46 |
|
| - |
|
47 |
void SoundNote(unsigned int8 Note, Octave, unsigned int16 Duration); |
| - |
|
48 |
// Predava se cislo noty (0 je C), posunuti v oktavach (0 nejnizsi ton, |
| - |
|
49 |
// SOUND_Space je ticho), doba trvani v ms |
| - |
|
50 |
|
| - |
|
51 |
// Alternativni makra pro generovani konstatnich tonu |
| - |
|
52 |
// SoundBeepMacro(Frequency, Duration) - frekvence nesmi byt 0 |
| - |
|
53 |
// SoundNoteMacro(Note, Octave, Duration) - nepodporuje SOUND_Space |
| - |
|
54 |
// SoundSpaceMacro(Duration) - hraje ticho |
| - |
|
55 |
|
| - |
|
56 |
// Privatni cast |
| - |
|
57 |
|
| - |
|
58 |
|
| - |
|
59 |
#int_ccp1 |
| - |
|
60 |
void IntCCP1() |
| - |
|
61 |
// Preruseni od jednotky CCP1 generuje vystup |
| - |
|
62 |
{ |
| - |
|
63 |
volatile int1 Data; // Posledni stav vystupu |
| - |
|
64 |
output_bit(SOUND_HI,Data); // Nastav vystup |
| - |
|
65 |
output_bit(SOUND_LO,~Data); |
| - |
|
66 |
Data=~Data; // Otoc stav vystupu |
| - |
|
67 |
} |
| - |
|
68 |
|
| - |
|
69 |
|
| - |
|
70 |
#if SOUND_CLOCK < (65535*32*4*2) // < 16.7 MHz |
| - |
|
71 |
#define SOUND_PRESCALE 1 |
| - |
|
72 |
#elif SOUND_CLOCK < (65535*32*4*2*2) // < 33.6 MHz |
| - |
|
73 |
#define SOUND_PRESCALE 2 |
| - |
|
74 |
#elif SOUND_CLOCK < (65535*32*4*2*4) // < 67.1 MHz |
| - |
|
75 |
#define SOUND_PRESCALE 4 |
| - |
|
76 |
#elif SOUND_CLOCK < (65535*32*4*2*8) // < 134 MHz |
| - |
|
77 |
#define SOUND_PRESCALE 8 |
| - |
|
78 |
#else |
| - |
|
79 |
#error SOUND_CLOCK Frequency too high |
| - |
|
80 |
#endif |
| - |
|
81 |
#bit T0IF=0x0B.2 |
| - |
|
82 |
void SoundBeep(unsigned int16 Frequency, unsigned int16 Duration) |
| - |
|
83 |
// Predava se frekvence v Hz a doba trvani v ms (0 znamena ticho) |
| - |
|
84 |
// Rozumne frekvence jsou od 32Hz |
| - |
|
85 |
{ |
| - |
|
86 |
unsigned int16 Time; // Pocitadlo zlomkoveho casu |
| - |
|
87 |
|
| - |
|
88 |
// Inicializace casovace |
| - |
|
89 |
if (Frequency!=0) // Frekvence 0 znamena ticho |
| - |
|
90 |
{ |
| - |
|
91 |
setup_ccp1(CCP_COMPARE_RESET_TIMER); |
| - |
|
92 |
set_timer1(0); |
| - |
|
93 |
(int16)CCP_1=SOUND_CLOCK/SOUND_PRESCALE/4/2/Frequency; |
| - |
|
94 |
#if SOUND_PRESCALE==1 |
| - |
|
95 |
setup_timer_1(T1_INTERNAL|T1_DIV_BY_1); |
| - |
|
96 |
#elif SOUND_PRESCALE==2 |
| - |
|
97 |
setup_timer_1(T1_INTERNAL|T1_DIV_BY_2); |
| - |
|
98 |
#elif SOUND_PRESCALE==4 |
| - |
|
99 |
setup_timer_1(T1_INTERNAL|T1_DIV_BY_4); |
| - |
|
100 |
#elif SOUND_PRESCALE==8 |
| - |
|
101 |
setup_timer_1(T1_INTERNAL|T1_DIV_BY_8); |
| - |
|
102 |
#endif |
| - |
|
103 |
enable_interrupts(int_ccp1); |
| - |
|
104 |
enable_interrupts(global); |
| - |
|
105 |
} |
| - |
|
106 |
|
| - |
|
107 |
// Delka tonu merena casovacem T0 (bez preruseni) |
| - |
|
108 |
Time=0; |
| - |
|
109 |
setup_timer_0(RTCC_INTERNAL|RTCC_DIV_1); |
| - |
|
110 |
while (Duration) |
| - |
|
111 |
{ |
| - |
|
112 |
#ifdef SOUND_WDT |
| - |
|
113 |
restart_wdt(); // Nuluj watchdog abychom se nezresetovali |
| - |
|
114 |
#endif |
| - |
|
115 |
if (T0IF) // Preteceni T0 - kazdych (1/CLK)*4*256 |
| - |
|
116 |
{ |
| - |
|
117 |
T0IF = 0; |
| - |
|
118 |
Time += (256*4*1000*2048+SOUND_CLOCK/2)/SOUND_CLOCK; |
| - |
|
119 |
} |
| - |
|
120 |
if (Time>>11) |
| - |
|
121 |
{ |
| - |
|
122 |
Time -= 2048; |
| - |
|
123 |
Duration--; |
| - |
|
124 |
} |
| - |
|
125 |
} |
| - |
|
126 |
|
| - |
|
127 |
// Konec casovace |
| - |
|
128 |
disable_interrupts(int_ccp1); |
| - |
|
129 |
disable_interrupts(global); |
| - |
|
130 |
} |
| - |
|
131 |
|
| - |
|
132 |
|
| - |
|
133 |
// Definice casu pulperody pro nejnizsi oktavu, v kvantech casovace T1 |
| - |
|
134 |
// Pulperiody tonu v dalsich oktavach se ziskavaji rotaci vpravo |
| - |
|
135 |
#define SOUND_Peri_C ((30578*(SOUND_CLOCK/1000)/1000/4/2)/SOUND_PRESCALE) // Perioda 30578us |
| - |
|
136 |
#define SOUND_Peri_Cis ((28862*(SOUND_CLOCK/1000)/1000/4/2)/SOUND_PRESCALE) // Perioda 28862us |
| - |
|
137 |
#define SOUND_Peri_D ((27242*(SOUND_CLOCK/1000)/1000/4/2)/SOUND_PRESCALE) // Perioda 27242us |
| - |
|
138 |
#define SOUND_Peri_Dis ((25713*(SOUND_CLOCK/1000)/1000/4/2)/SOUND_PRESCALE) // Perioda 25713us |
| - |
|
139 |
#define SOUND_Peri_E ((24270*(SOUND_CLOCK/1000)/1000/4/2)/SOUND_PRESCALE) // Perioda 24270us |
| - |
|
140 |
#define SOUND_Peri_F ((22908*(SOUND_CLOCK/1000)/1000/4/2)/SOUND_PRESCALE) // Perioda 22908us |
| - |
|
141 |
#define SOUND_Peri_Fis ((21622*(SOUND_CLOCK/1000)/1000/4/2)/SOUND_PRESCALE) // Perioda 21622us |
| - |
|
142 |
#define SOUND_Peri_G ((20408*(SOUND_CLOCK/1000)/1000/4/2)/SOUND_PRESCALE) // Perioda 20408us |
| - |
|
143 |
#define SOUND_Peri_Gis ((19263*(SOUND_CLOCK/1000)/1000/4/2)/SOUND_PRESCALE) // Perioda 19263us |
| - |
|
144 |
#define SOUND_Peri_A ((18182*(SOUND_CLOCK/1000)/1000/4/2)/SOUND_PRESCALE) // Perioda 18182us |
| - |
|
145 |
#define SOUND_Peri_Ais ((17161*(SOUND_CLOCK/1000)/1000/4/2)/SOUND_PRESCALE) // Perioda 17161us |
| - |
|
146 |
#define SOUND_Peri_H ((16198*(SOUND_CLOCK/1000)/1000/4/2)/SOUND_PRESCALE) // Perioda 16198us |
| - |
|
147 |
|
| - |
|
148 |
// Kontrola na delku konstanty (musi byt mensi nez delka citace) |
| - |
|
149 |
#if SOUND_Peri_C > 65535 |
| - |
|
150 |
#error "SOUND_Peri_C too long (Note C requires delay > 65535 cycles)" |
| - |
|
151 |
#endif |
| - |
|
152 |
|
| - |
|
153 |
// Casove konstanty pro noty nejnizsi oktavy |
| - |
|
154 |
const unsigned int16 Table[12] = |
| - |
|
155 |
SOUND_Peri_C, SOUND_Peri_Cis, SOUND_Peri_D, SOUND_Peri_Dis, |
| - |
|
156 |
SOUND_Peri_E, SOUND_Peri_F, SOUND_Peri_Fis, SOUND_Peri_G, |
| - |
|
157 |
SOUND_Peri_Gis, SOUND_Peri_A, SOUND_Peri_Ais, SOUND_Peri_H; |
| - |
|
158 |
|
| - |
|
159 |
|
| - |
|
160 |
void SoundNote(unsigned int8 Note, Octave, unsigned int16 Duration) |
| - |
|
161 |
// Predava se cislo noty (0 je C), posunuti v oktavach (0 nejnizsi ton) |
| - |
|
162 |
// doba trvani v ms (0 znamena ticho) |
| - |
|
163 |
// Zahraje zadanou notu v zadane oktave dane delky |
| - |
|
164 |
{ |
| - |
|
165 |
unsigned int16 Time; // Pocitadlo zlomkoveho casu |
| - |
|
166 |
|
| - |
|
167 |
// Inicializace casovace |
| - |
|
168 |
if (Note!=SOUND_Space) // Pokud se ma hrat spust hrani |
| - |
|
169 |
{ |
| - |
|
170 |
setup_ccp1(CCP_COMPARE_RESET_TIMER); |
| - |
|
171 |
set_timer1(0); |
| - |
|
172 |
(int16)CCP_1=Table[Note]>>Octave; |
| - |
|
173 |
#if SOUND_PRESCALE==1 |
| - |
|
174 |
setup_timer_1(T1_INTERNAL|T1_DIV_BY_1); |
| - |
|
175 |
#elif SOUND_PRESCALE==2 |
| - |
|
176 |
setup_timer_1(T1_INTERNAL|T1_DIV_BY_2); |
| - |
|
177 |
#elif SOUND_PRESCALE==4 |
| - |
|
178 |
setup_timer_1(T1_INTERNAL|T1_DIV_BY_4); |
| - |
|
179 |
#elif SOUND_PRESCALE==8 |
| - |
|
180 |
setup_timer_1(T1_INTERNAL|T1_DIV_BY_8); |
| - |
|
181 |
#endif |
| - |
|
182 |
enable_interrupts(int_ccp1); |
| - |
|
183 |
enable_interrupts(global); |
| - |
|
184 |
} |
| - |
|
185 |
|
| - |
|
186 |
// Delka tonu merena casovacem T0 (bez preruseni) |
| - |
|
187 |
Time=0; |
| - |
|
188 |
setup_timer_0(RTCC_INTERNAL|RTCC_DIV_1); |
| - |
|
189 |
while (Duration) |
| - |
|
190 |
{ |
| - |
|
191 |
if (T0IF) // Preteceni T0 - kazdych (1/CLK)*4*256 |
| - |
|
192 |
{ |
| - |
|
193 |
T0IF = 0; |
| - |
|
194 |
Time += (256*4*1000*2048+SOUND_CLOCK/2)/SOUND_CLOCK; |
| - |
|
195 |
} |
| - |
|
196 |
if (Time>>11) |
| - |
|
197 |
{ |
| - |
|
198 |
Time -= 2048; |
| - |
|
199 |
Duration--; |
| - |
|
200 |
} |
| - |
|
201 |
#ifdef SOUND_WDT |
| - |
|
202 |
restart_wdt(); // Nuluj watchdog abychom se nezresetovali |
| - |
|
203 |
#endif |
| - |
|
204 |
} |
| - |
|
205 |
|
| - |
|
206 |
// Konec casovace |
| - |
|
207 |
disable_interrupts(int_ccp1); |
| - |
|
208 |
disable_interrupts(global); |
| - |
|
209 |
} |