forked from watterott/Arduino-Libs
-
Notifications
You must be signed in to change notification settings - Fork 30
/
digitalWriteFast.h
353 lines (292 loc) · 11.1 KB
/
digitalWriteFast.h
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
/*
Optimized digital functions for AVR microcontrollers
by Watterott electronic (www.watterott.com)
based on http://code.google.com/p/digitalwritefast
*/
#ifndef __digitalWriteFast_h_
#define __digitalWriteFast_h_ 1
#define ERROR_SEQUENCE 0b10101010 //digitalReadFast will return this value if pin number is not constant
// general macros/defines
#ifndef BIT_READ
# define BIT_READ(value, bit) ((value) & (1UL << (bit)))
#endif
#ifndef BIT_SET
# define BIT_SET(value, bit) ((value) |= (1UL << (bit)))
#endif
#ifndef BIT_CLEAR
# define BIT_CLEAR(value, bit) ((value) &= ~(1UL << (bit)))
#endif
#ifndef BIT_WRITE
# define BIT_WRITE(value, bit, bitvalue) (bitvalue ? BIT_SET(value, bit) : BIT_CLEAR(value, bit))
#endif
#ifndef SWAP
#define SWAP(x,y) do{ (x)=(x)^(y); (y)=(x)^(y); (x)=(x)^(y); }while(0)
#endif
/* //not needed, rather it produces annoying warnings when compiled
#ifndef DEC
# define DEC (10)
#endif
#ifndef HEX
# define HEX (16)
#endif
#ifndef OCT
# define OCT (8)
#endif
#ifndef BIN
# define BIN (2)
#endif
*/
// workarounds for ARM microcontrollers
#if (!defined(__AVR__) || defined(ARDUINO_ARCH_SAM))
#ifndef PROGMEM
# define PROGMEM
#endif
#ifndef PGM_P
# define PGM_P const char *
#endif
#ifndef PSTR
# define PSTR(str) (str)
#endif
#ifndef memcpy_P
# define memcpy_P(dest, src, num) memcpy((dest), (src), (num))
#endif
#ifndef strcpy_P
# define strcpy_P(dst, src) strcpy((dst), (src))
#endif
#ifndef strcat_P
# define strcat_P(dst, src) strcat((dst), (src))
#endif
#ifndef strcmp_P
# define strcmp_P(a, b) strcmp((a), (b))
#endif
#ifndef strcasecmp_P
# define strcasecmp_P(a, b) strcasecmp((a), (b))
#endif
#ifndef strncmp_P
# define strncmp_P(a, b, n) strncmp((a), (b), (n))
#endif
#ifndef strncasecmp_P
# define strncasecmp_P(a, b, n) strncasecmp((a), (b), (n))
#endif
#ifndef strstr_P
# define strstr_P(a, b) strstr((a), (b))
#endif
#ifndef strlen_P
# define strlen_P(a) strlen((a))
#endif
#ifndef sprintf_P
# define sprintf_P(s, f, ...) sprintf((s), (f), __VA_ARGS__)
#endif
#ifndef pgm_read_byte
# define pgm_read_byte(addr) (*(const unsigned char *)(addr))
#endif
#ifndef pgm_read_word
# define pgm_read_word(addr) (*(const unsigned short *)(addr))
#endif
#ifndef pgm_read_dword
# define pgm_read_dword(addr) (*(const unsigned long *)(addr))
#endif
#endif
// digital functions
//#ifndef digitalPinToPortReg
#define SPI_SW_SS_PIN (10) //SS on Uno (for software SPI)
#define SPI_SW_MOSI_PIN (11) //MOSI on Uno (for software SPI)
#define SPI_SW_MISO_PIN (12) //MISO on Uno (for software SPI)
#define SPI_SW_SCK_PIN (13) //SCK on Uno (for software SPI)
// --- Arduino Due ---
#if (defined(ARDUINO_SAM_DUE) || defined(__SAM3X8E__))
#define UART_RX_PIN (0)
#define UART_TX_PIN (1)
#define I2C_SDA_PIN (20)
#define I2C_SCL_PIN (21)
#define SPI_HW_SS_PIN (78) //SS0:77, SS1:87, SS2:86, SS3:78
#define SPI_HW_MOSI_PIN (75) //75
#define SPI_HW_MISO_PIN (74) //74
#define SPI_HW_SCK_PIN (76) //76
// --- Arduino Zero ---
#elif (defined(ARDUINO_SAM_ZERO) || defined(__SAMD21G18A__))
#define UART_RX_PIN (0)
#define UART_TX_PIN (1)
#define I2C_SDA_PIN (16)
#define I2C_SCL_PIN (17)
#define SPI_HW_SS_PIN (14) //14
#define SPI_HW_MOSI_PIN (21) //21
#define SPI_HW_MISO_PIN (18) //18
#define SPI_HW_SCK_PIN (20) //20
// --- Arduino Mega ---
#elif (defined(ARDUINO_AVR_MEGA) || \
defined(ARDUINO_AVR_MEGA1280) || \
defined(ARDUINO_AVR_MEGA2560) || \
defined(__AVR_ATmega1280__) || \
defined(__AVR_ATmega1281__) || \
defined(__AVR_ATmega2560__) || \
defined(__AVR_ATmega2561__))
#define UART_RX_PIN (0) //PE0
#define UART_TX_PIN (1) //PE1
#define I2C_SDA_PIN (20)
#define I2C_SCL_PIN (21)
#define SPI_HW_SS_PIN (53) //PB0
#define SPI_HW_MOSI_PIN (51) //PB2
#define SPI_HW_MISO_PIN (50) //PB3
#define SPI_HW_SCK_PIN (52) //PB1
#define __digitalPinToPortReg(P) \
(((P) >= 22 && (P) <= 29) ? &PORTA : \
((((P) >= 10 && (P) <= 13) || ((P) >= 50 && (P) <= 53)) ? &PORTB : \
(((P) >= 30 && (P) <= 37) ? &PORTC : \
((((P) >= 18 && (P) <= 21) || (P) == 38) ? &PORTD : \
((((P) >= 0 && (P) <= 3) || (P) == 5) ? &PORTE : \
(((P) >= 54 && (P) <= 61) ? &PORTF : \
((((P) >= 39 && (P) <= 41) || (P) == 4) ? &PORTG : \
((((P) >= 6 && (P) <= 9) || (P) == 16 || (P) == 17) ? &PORTH : \
(((P) == 14 || (P) == 15) ? &PORTJ : \
(((P) >= 62 && (P) <= 69) ? &PORTK : &PORTL))))))))))
#define __digitalPinToDDRReg(P) \
(((P) >= 22 && (P) <= 29) ? &DDRA : \
((((P) >= 10 && (P) <= 13) || ((P) >= 50 && (P) <= 53)) ? &DDRB : \
(((P) >= 30 && (P) <= 37) ? &DDRC : \
((((P) >= 18 && (P) <= 21) || (P) == 38) ? &DDRD : \
((((P) >= 0 && (P) <= 3) || (P) == 5) ? &DDRE : \
(((P) >= 54 && (P) <= 61) ? &DDRF : \
((((P) >= 39 && (P) <= 41) || (P) == 4) ? &DDRG : \
((((P) >= 6 && (P) <= 9) || (P) == 16 || (P) == 17) ? &DDRH : \
(((P) == 14 || (P) == 15) ? &DDRJ : \
(((P) >= 62 && (P) <= 69) ? &DDRK : &DDRL))))))))))
#define __digitalPinToPINReg(P) \
(((P) >= 22 && (P) <= 29) ? &PINA : \
((((P) >= 10 && (P) <= 13) || ((P) >= 50 && (P) <= 53)) ? &PINB : \
(((P) >= 30 && (P) <= 37) ? &PINC : \
((((P) >= 18 && (P) <= 21) || (P) == 38) ? &PIND : \
((((P) >= 0 && (P) <= 3) || (P) == 5) ? &PINE : \
(((P) >= 54 && (P) <= 61) ? &PINF : \
((((P) >= 39 && (P) <= 41) || (P) == 4) ? &PING : \
((((P) >= 6 && (P) <= 9) || (P) == 16 || (P) == 17) ? &PINH : \
(((P) == 14 || (P) == 15) ? &PINJ : \
(((P) >= 62 && (P) <= 69) ? &PINK : &PINL))))))))))
#define __digitalPinToBit(P) \
(((P) >= 7 && (P) <= 9) ? (P) - 3 : \
(((P) >= 10 && (P) <= 13) ? (P) - 6 : \
(((P) >= 22 && (P) <= 29) ? (P) - 22 : \
(((P) >= 30 && (P) <= 37) ? 37 - (P) : \
(((P) >= 39 && (P) <= 41) ? 41 - (P) : \
(((P) >= 42 && (P) <= 49) ? 49 - (P) : \
(((P) >= 50 && (P) <= 53) ? 53 - (P) : \
(((P) >= 54 && (P) <= 61) ? (P) - 54 : \
(((P) >= 62 && (P) <= 69) ? (P) - 62 : \
(((P) == 0 || (P) == 15 || (P) == 17 || (P) == 21) ? 0 : \
(((P) == 1 || (P) == 14 || (P) == 16 || (P) == 20) ? 1 : \
(((P) == 19) ? 2 : \
(((P) == 5 || (P) == 6 || (P) == 18) ? 3 : \
(((P) == 2) ? 4 : \
(((P) == 3 || (P) == 4) ? 5 : 7)))))))))))))))
// --- Arduino 644 ---
#elif (defined(__AVR_ATmega644__) || \
defined(__AVR_ATmega644P__))
#define UART_RX_PIN (8) //PD0
#define UART_TX_PIN (9) //PD1
#define I2C_SDA_PIN (17) //PC1
#define I2C_SCL_PIN (16) //PC0
#define SPI_HW_SS_PIN (4) //PB4
#define SPI_HW_MOSI_PIN (5) //PB5
#define SPI_HW_MISO_PIN (6) //PB6
#define SPI_HW_SCK_PIN (7) //PB7
#define __digitalPinToPortReg(P) \
(((P) >= 0 && (P) <= 7) ? &PORTB : (((P) >= 8 && (P) <= 15) ? &PORTD : (((P) >= 16 && (P) <= 23) ? &PORTC : &PORTA)))
#define __digitalPinToDDRReg(P) \
(((P) >= 0 && (P) <= 7) ? &DDRB : (((P) >= 8 && (P) <= 15) ? &DDRD : (((P) >= 8 && (P) <= 15) ? &DDRC : &DDRA)))
#define __digitalPinToPINReg(P) \
(((P) >= 0 && (P) <= 7) ? &PINB : (((P) >= 8 && (P) <= 15) ? &PIND : (((P) >= 8 && (P) <= 15) ? &PINC : &PINA)))
#define __digitalPinToBit(P) \
(((P) >= 0 && (P) <= 7) ? (P) : (((P) >= 8 && (P) <= 15) ? (P) - 8 : (((P) >= 16 && (P) <= 23) ? (P) - 16 : (P) - 24)))
// --- Arduino Leonardo ---
#elif (defined(ARDUINO_AVR_LEONARDO) || \
defined(__AVR_ATmega16U4__) || \
defined(__AVR_ATmega32U4__))
#define UART_RX_PIN (0) //PD2
#define UART_TX_PIN (1) //PD3
#define I2C_SDA_PIN (2) //PD1
#define I2C_SCL_PIN (3) //PD0
#define SPI_HW_SS_PIN (17) //PB0
#define SPI_HW_MOSI_PIN (16) //PB2
#define SPI_HW_MISO_PIN (14) //PB3
#define SPI_HW_SCK_PIN (15) //PB1
#define __digitalPinToPortReg(P) \
((((P) >= 0 && (P) <= 4) || (P) == 6 || (P) == 12 || (P) == 24 || (P) == 25 || (P) == 29) ? &PORTD : (((P) == 5 || (P) == 13) ? &PORTC : (((P) >= 18 && (P) <= 23)) ? &PORTF : (((P) == 7) ? &PORTE : &PORTB)))
#define __digitalPinToDDRReg(P) \
((((P) >= 0 && (P) <= 4) || (P) == 6 || (P) == 12 || (P) == 24 || (P) == 25 || (P) == 29) ? &DDRD : (((P) == 5 || (P) == 13) ? &DDRC : (((P) >= 18 && (P) <= 23)) ? &DDRF : (((P) == 7) ? &DDRE : &DDRB)))
#define __digitalPinToPINReg(P) \
((((P) >= 0 && (P) <= 4) || (P) == 6 || (P) == 12 || (P) == 24 || (P) == 25 || (P) == 29) ? &PIND : (((P) == 5 || (P) == 13) ? &PINC : (((P) >= 18 && (P) <= 23)) ? &PINF : (((P) == 7) ? &PINE : &PINB)))
#define __digitalPinToBit(P) \
(((P) >= 8 && (P) <= 11) ? (P) - 4 : (((P) >= 18 && (P) <= 21) ? 25 - (P) : (((P) == 0) ? 2 : (((P) == 1) ? 3 : (((P) == 2) ? 1 : (((P) == 3) ? 0 : (((P) == 4) ? 4 : (((P) == 6) ? 7 : (((P) == 13) ? 7 : (((P) == 14) ? 3 : (((P) == 15) ? 1 : (((P) == 16) ? 2 : (((P) == 17) ? 0 : (((P) == 22) ? 1 : (((P) == 23) ? 0 : (((P) == 24) ? 4 : (((P) == 25) ? 7 : (((P) == 26) ? 4 : (((P) == 27) ? 5 : 6 )))))))))))))))))))
// --- Arduino Uno ---
#elif (defined(ARDUINO_AVR_UNO) || \
defined(ARDUINO_AVR_DUEMILANOVE) || \
defined(ARDUINO_ARCH_AVR) || \
defined(__AVR_ATmega328__) || \
defined(__AVR_ATmega328P__) || \
defined(__AVR__))
#define UART_RX_PIN (0) //PD0
#define UART_TX_PIN (1) //PD1
#define I2C_SDA_PIN (18) //A4
#define I2C_SCL_PIN (19) //A5
#define SPI_HW_SS_PIN (10) //PB0
#define SPI_HW_MOSI_PIN (11) //PB2
#define SPI_HW_MISO_PIN (12) //PB3
#define SPI_HW_SCK_PIN (13) //PB1
#define __digitalPinToPortReg(P) \
(((P) >= 0 && (P) <= 7) ? &PORTD : (((P) >= 8 && (P) <= 13) ? &PORTB : &PORTC))
#define __digitalPinToDDRReg(P) \
(((P) >= 0 && (P) <= 7) ? &DDRD : (((P) >= 8 && (P) <= 13) ? &DDRB : &DDRC))
#define __digitalPinToPINReg(P) \
(((P) >= 0 && (P) <= 7) ? &PIND : (((P) >= 8 && (P) <= 13) ? &PINB : &PINC))
#define __digitalPinToBit(P) \
(((P) >= 0 && (P) <= 7) ? (P) : (((P) >= 8 && (P) <= 13) ? (P) - 8 : (P) - 14))
// --- Other ---
#else
#define SPI_HW_SS_PIN SS
#define SPI_HW_MOSI_PIN MOSI
#define SPI_HW_MISO_PIN MISO
#define SPI_HW_SCK_PIN SCK
#endif
//#endif //#ifndef digitalPinToPortReg
//ref: http://forum.arduino.cc/index.php?topic=140409.msg1054868#msg1054868
//void OutputsErrorIfCalled( void ) __attribute__ (( error( "Line: "__line__ "Variable used for digitalWriteFast") ));
void NonConstantUsed( void ) __attribute__ (( error("") ));
#ifndef digitalWriteFast
#if (defined(__AVR__) || defined(ARDUINO_ARCH_AVR))
#define digitalWriteFast(P, V) \
if (__builtin_constant_p(P) && __builtin_constant_p(V)) { \
BIT_WRITE(*__digitalPinToPortReg(P), __digitalPinToBit(P), (V)); \
} else { \
NonConstantUsed(); \
}
#else
//#define digitalWriteFast digitalWrite
#error Non-AVR device, unsupported.
#endif
#endif
#ifndef pinModeFast
#if (defined(__AVR__) || defined(ARDUINO_ARCH_AVR))
#define pinModeFast(P, V) \
if (__builtin_constant_p(P) && __builtin_constant_p(V)) { \
BIT_WRITE(*__digitalPinToDDRReg(P), __digitalPinToBit(P), (V)); \
} else { \
NonConstantUsed(); \
}
#else
//#define pinModeFast pinMode
#error Non-AVR device, unsupported.
#endif
#endif
#ifndef digitalReadFast
#if (defined(__AVR__) || defined(ARDUINO_ARCH_AVR))
#define digitalReadFast(P) ( (byte) __digitalReadFast((P)) )
#define __digitalReadFast(P ) \
(__builtin_constant_p(P) ) ? ( \
( BIT_READ(*__digitalPinToPINReg(P), __digitalPinToBit(P))) ) : \
ERROR_SEQUENCE
#else
//#define digitalReadFast digitalRead
#error Non-AVR device, unsupported.
#endif
#endif
#endif //__digitalWriteFast_h_