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authorDavid A. Mellis <d.mellis@arduino.cc>2009-11-07 17:05:21 +0000
committerDavid A. Mellis <d.mellis@arduino.cc>2009-11-07 17:05:21 +0000
commit584dece7b0c982de8731f7400c94b5034aef89e7 (patch)
treef2d254ac1200e0517fc707d281c48669bec06f59 /cores/arduino/wiring_digital.c
parent7d31607442b61b57e9cc794e7f15d6322553e3f0 (diff)
Moving things around.
Diffstat (limited to 'cores/arduino/wiring_digital.c')
-rwxr-xr-xcores/arduino/wiring_digital.c111
1 files changed, 0 insertions, 111 deletions
diff --git a/cores/arduino/wiring_digital.c b/cores/arduino/wiring_digital.c
deleted file mode 100755
index 1cdbf6c..0000000
--- a/cores/arduino/wiring_digital.c
+++ /dev/null
@@ -1,111 +0,0 @@
-/*
- wiring_digital.c - digital input and output functions
- Part of Arduino - http://www.arduino.cc/
-
- Copyright (c) 2005-2006 David A. Mellis
-
- 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., 59 Temple Place, Suite 330,
- Boston, MA 02111-1307 USA
-
- $Id: wiring.c 248 2007-02-03 15:36:30Z mellis $
-*/
-
-#include "wiring_private.h"
-#include "pins_arduino.h"
-
-void pinMode(uint8_t pin, uint8_t mode)
-{
- uint8_t bit = digitalPinToBitMask(pin);
- uint8_t port = digitalPinToPort(pin);
- volatile uint8_t *reg;
-
- if (port == NOT_A_PIN) return;
-
- // JWS: can I let the optimizer do this?
- reg = portModeRegister(port);
-
- if (mode == INPUT) *reg &= ~bit;
- else *reg |= bit;
-}
-
-// Forcing this inline keeps the callers from having to push their own stuff
-// on the stack. It is a good performance win and only takes 1 more byte per
-// user than calling. (It will take more bytes on the 168.)
-//
-// But shouldn't this be moved into pinMode? Seems silly to check and do on
-// each digitalread or write.
-//
-static inline void turnOffPWM(uint8_t timer) __attribute__ ((always_inline));
-static inline void turnOffPWM(uint8_t timer)
-{
- if (timer == TIMER1A) cbi(TCCR1A, COM1A1);
- if (timer == TIMER1B) cbi(TCCR1A, COM1B1);
-
-#if defined(__AVR_ATmega8__)
- if (timer == TIMER2) cbi(TCCR2, COM21);
-#else
- if (timer == TIMER0A) cbi(TCCR0A, COM0A1);
- if (timer == TIMER0B) cbi(TCCR0A, COM0B1);
- if (timer == TIMER2A) cbi(TCCR2A, COM2A1);
- if (timer == TIMER2B) cbi(TCCR2A, COM2B1);
-#endif
-
-#if defined(__AVR_ATmega1280__)
- if (timer == TIMER3A) cbi(TCCR3A, COM3A1);
- if (timer == TIMER3B) cbi(TCCR3A, COM3B1);
- if (timer == TIMER3C) cbi(TCCR3A, COM3C1);
- if (timer == TIMER4A) cbi(TCCR4A, COM4A1);
- if (timer == TIMER4B) cbi(TCCR4A, COM4B1);
- if (timer == TIMER4C) cbi(TCCR4A, COM4C1);
- if (timer == TIMER5A) cbi(TCCR5A, COM5A1);
- if (timer == TIMER5B) cbi(TCCR5A, COM5B1);
- if (timer == TIMER5C) cbi(TCCR5A, COM5C1);
-#endif
-}
-
-void digitalWrite(uint8_t pin, uint8_t val)
-{
- uint8_t timer = digitalPinToTimer(pin);
- uint8_t bit = digitalPinToBitMask(pin);
- uint8_t port = digitalPinToPort(pin);
- volatile uint8_t *out;
-
- if (port == NOT_A_PIN) return;
-
- // If the pin that support PWM output, we need to turn it off
- // before doing a digital write.
- if (timer != NOT_ON_TIMER) turnOffPWM(timer);
-
- out = portOutputRegister(port);
-
- if (val == LOW) *out &= ~bit;
- else *out |= bit;
-}
-
-int digitalRead(uint8_t pin)
-{
- uint8_t timer = digitalPinToTimer(pin);
- uint8_t bit = digitalPinToBitMask(pin);
- uint8_t port = digitalPinToPort(pin);
-
- if (port == NOT_A_PIN) return LOW;
-
- // If the pin that support PWM output, we need to turn it off
- // before getting a digital reading.
- if (timer != NOT_ON_TIMER) turnOffPWM(timer);
-
- if (*portInputRegister(port) & bit) return HIGH;
- return LOW;
-}