diff options
| author | Thibaut VIARD <thibaut.viard@atmel.com> | 2011-06-21 00:20:43 +0200 |
|---|---|---|
| committer | Thibaut VIARD <thibaut.viard@atmel.com> | 2011-06-21 00:20:43 +0200 |
| commit | 0887b98f627500271b5ad8b3c4f6c7b90bc227ee (patch) | |
| tree | ef8626954567ba22e392c68c8f3606416b07b5b5 /libraries/SoftwareSerial/icrmacros.h | |
| parent | 90c487402cefadb6a2aab907ab07075cbb759e34 (diff) | |
Moving all AVR specific libraries to hardware/avr
Diffstat (limited to 'libraries/SoftwareSerial/icrmacros.h')
| -rwxr-xr-x | libraries/SoftwareSerial/icrmacros.h | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/libraries/SoftwareSerial/icrmacros.h b/libraries/SoftwareSerial/icrmacros.h new file mode 100755 index 0000000..936eae8 --- /dev/null +++ b/libraries/SoftwareSerial/icrmacros.h @@ -0,0 +1,69 @@ +/*
+icrmacros.h
+
+A place to put useful ICR (interrupt change register) macros
+
+If you want to support non-Arduino processors you can extend or replace
+this file.
+
+This library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Lesser General Public
+License as published by the Free Software Foundation; either
+version 2.1 of the License, or (at your option) any later version.
+
+This library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+Lesser General Public License for more details.
+
+You should have received a copy of the GNU Lesser General Public
+License along with this library; if not, write to the Free Software
+Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+
+The latest version of this library can always be found at
+http://arduiniana.org.
+*/
+
+// Abstractions for maximum portability between processors
+// These are macros to associate pins to pin change interrupts
+#if !defined(digitalPinToPCICR) // Courtesy Paul Stoffregen
+
+#if defined(__AVR_ATmega168__) || defined(__AVR_ATmega328P__)
+
+#define digitalPinToPCICR(p) (((p) >= 0 && (p) <= 21) ? (&PCICR) : ((uint8_t *)0))
+#define digitalPinToPCICRbit(p) (((p) <= 7) ? 2 : (((p) <= 13) ? 0 : 1))
+#define digitalPinToPCMSK(p) (((p) <= 7) ? (&PCMSK2) : (((p) <= 13) ? (&PCMSK0) : (((p) <= 21) ? (&PCMSK1) : ((uint8_t *)0))))
+#define digitalPinToPCMSKbit(p) (((p) <= 7) ? (p) : (((p) <= 13) ? ((p) - 8) : ((p) - 14)))
+
+#elif defined(__AVR_ATmega1280__) || defined(__AVR_ATmega2560__)
+// Specifically for the Arduino Mega 2560 (or 1280 on the original Arduino Mega)
+// A majority of the pins are NOT PCINTs, SO BE WARNED (i.e. you cannot use them as receive pins)
+// Only pins available for RECEIVE (TRANSMIT can be on any pin):
+// (I've deliberately left out pin mapping to the Hardware USARTs - seems senseless to me)
+// Pins: 10, 11, 12, 13, 50, 51, 52, 53, 62, 63, 64, 65, 66, 67, 68, 69
+
+#define digitalPinToPCICR(p) ( (((p) >= 10) && ((p) <= 13)) || \
+ (((p) >= 50) && ((p) <= 53)) || \
+ (((p) >= 62) && ((p) <= 69)) ? (&PCICR) : ((uint8_t *)0) )
+
+#define digitalPinToPCICRbit(p) ( (((p) >= 10) && ((p) <= 13)) || (((p) >= 50) && ((p) <= 53)) ? 0 : \
+ ( (((p) >= 62) && ((p) <= 69)) ? 2 : \
+ 0 ) )
+
+#define digitalPinToPCMSK(p) ( (((p) >= 10) && ((p) <= 13)) || (((p) >= 50) && ((p) <= 53)) ? (&PCMSK0) : \
+ ( (((p) >= 62) && ((p) <= 69)) ? (&PCMSK2) : \
+ ((uint8_t *)0) ) )
+
+#define digitalPinToPCMSKbit(p) ( (((p) >= 10) && ((p) <= 13)) ? ((p) - 6) : \
+ ( ((p) == 50) ? 3 : \
+ ( ((p) == 51) ? 2 : \
+ ( ((p) == 52) ? 1 : \
+ ( ((p) == 53) ? 0 : \
+ ( (((p) >= 62) && ((p) <= 69)) ? ((p) - 62) : \
+ 0 ) ) ) ) ) )
+
+#else
+#error This processor is not supported by SoftwareSerial
+#endif
+#endif
+
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