Initial Commit

examples/Makefile

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+#
+# Makefile:
+#	wiringPi - Wiring Compatable library for the Raspberry Pi
+#	https://projects.drogon.net/wiring-pi
+#
+#	Copyright (c) 2012 Gordon Henderson
+#################################################################################
+# This file is part of wiringPi:
+#	Wiring Compatable library for the Raspberry Pi
+#
+#    wiringPi is free software: you can redistribute it and/or modify
+#    it under the terms of the GNU General Public License as published by
+#    the Free Software Foundation, either version 3 of the License, or
+#    (at your option) any later version.
+#
+#    wiringPi 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 General Public License for more details.
+#
+#    You should have received a copy of the GNU General Public License
+#    along with wiringPi.  If not, see <http://www.gnu.org/licenses/>.
+#################################################################################
+
+
+#DEBUG	= -g -O0
+DEBUG	= -O3
+CC	= gcc
+INCLUDE	= -I/usr/local/include
+CFLAGS	= $(DEBUG) -Wall $(INCLUDE) -Winline -pipe
+
+LDFLAGS	= -L/usr/local/lib
+LIBS    = -lwiringPi
+
+# Should not alter anything below this line
+###############################################################################
+
+SRC	=	test1.c test2.c speed.c
+
+OBJ	=	test1.o test2.o speed.o
+
+all:		test1 test2 speed
+
+test1:	test1.o
+	@echo [link]
+	$(CC) -o $@ test1.o $(LDFLAGS) $(LIBS)
+	
+test2:	test2.o
+	@echo [link]
+	$(CC) -o $@ test2.o $(LDFLAGS) $(LIBS)
+
+speed:	speed.o
+	@echo [link]
+	$(CC) -o $@ speed.o $(LDFLAGS) $(LIBS)
+	
+
+.c.o:
+	@echo [CC] $<
+	@$(CC) -c $(CFLAGS) $< -o $@
+
+clean:
+	rm -f $(OBJ) *~ core tags test1 test2 speed
+
+tags:	$(SRC)
+	@echo [ctags]
+	@ctags $(SRC)
+
+depend:
+	makedepend -Y $(SRC)
+
+# DO NOT DELETE

examples/speed.c

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+
+/*
+ * speed.c:
+ *	Simple program to measure the speed of the various GPIO
+ *	access mechanisms.
+ */
+
+#include <wiringPi.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+
+#define	FAST_COUNT	10000000
+#define	SLOW_COUNT	 1000000
+
+
+int main (void)
+{
+  int i ;
+  uint32_t start, end, count, sum, perSec ;
+
+  printf ("Raspberry Pi wiringPi speed test program\n") ;
+
+// Start the standard way
+
+  if (wiringPiSetup () == -1)
+    exit (1) ;
+
+  printf ("Native wiringPi method: (%8d iterations)\n", FAST_COUNT) ;
+
+  pinMode (0, OUTPUT) ;
+
+  sum = 0 ;
+  for (i = 0 ; i < 3 ; ++i)
+  {
+    printf ("  Pass: %d: ", i) ;
+    fflush (stdout) ;
+
+    start = millis () ;
+    for (count = 0 ; count < FAST_COUNT ; ++count)
+      digitalWrite (0, 1) ;
+    end = millis () ;
+    printf (" %8dmS\n", end - start) ;
+    sum += (end - start) ;
+  }
+  digitalWrite (0, 0) ;
+  printf ("   Average: %8dmS", sum / 3) ;
+  perSec = (int)(double)FAST_COUNT / (double)((double)sum / 3.0) * 1000.0 ;
+  printf (": %6d/sec\n", perSec) ;
+
+
+  printf ("Native GPIO method: (%8d iterations)\n", FAST_COUNT) ;
+
+  wiringPiGpioMode (WPI_MODE_GPIO) ;
+
+  pinMode (17, OUTPUT) ;
+
+  sum = 0 ;
+  for (i = 0 ; i < 3 ; ++i)
+  {
+    printf ("  Pass: %d: ", i) ;
+    fflush (stdout) ;
+
+    start = millis () ;
+    for (count = 0 ; count < 10000000 ; ++count)
+      digitalWrite (17, 1) ;
+    end = millis () ;
+    printf (" %8dmS\n", end - start) ;
+    sum += (end - start) ;
+  }
+  digitalWrite (17, 0) ;
+  printf ("   Average: %8dmS", sum / 3) ;
+  perSec = (int)(double)FAST_COUNT / (double)((double)sum / 3.0) * 1000.0 ;
+  printf (": %6d/sec\n", perSec) ;
+
+
+// Switch to SYS mode:
+
+  wiringPiSetupSys () ;
+
+  printf ("/sys/class/gpio method: (%8d iterations)\n", SLOW_COUNT) ;
+
+  sum = 0 ;
+  for (i = 0 ; i < 3 ; ++i)
+  {
+    printf ("  Pass: %d: ", i) ;
+    fflush (stdout) ;
+
+    start = millis () ;
+    for (count = 0 ; count < SLOW_COUNT ; ++count)
+      digitalWrite (17, 1) ;
+    end = millis () ;
+    printf (" %8dmS\n", end - start) ;
+    sum += (end - start) ;
+  }
+  digitalWrite (17, 0) ;
+  printf ("   Average: %8dmS", sum / 3) ;
+  perSec = (int)(double)SLOW_COUNT / (double)((double)sum / 3.0) * 1000.0 ;
+  printf (": %6d/sec\n", perSec) ;
+
+  return 0 ;
+}

examples/test1.c

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+
+/*
+ * test1.c:
+ *	Simple test program to test the wiringPi functions
+ */
+
+#include <wiringPi.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+
+
+// Simple sequencer data
+//	Triplets of LED, On/Off and delay
+
+uint8_t data [] =
+{
+            0, 1, 1,
+            1, 1, 1,
+  0, 0, 0,  2, 1, 1,
+  1, 0, 0,  3, 1, 1,
+  2, 0, 0,  4, 1, 1,
+  3, 0, 0,  5, 1, 1,
+  4, 0, 0,  6, 1, 1,
+  5, 0, 0,  7, 1, 1,
+  6, 0, 1,
+  7, 0, 1,
+
+  0, 0, 1,	// Extra delay
+
+// Back again
+
+            7, 1, 1,
+            6, 1, 1,
+  7, 0, 0,  5, 1, 1,
+  6, 0, 0,  4, 1, 1,
+  5, 0, 0,  3, 1, 1,
+  4, 0, 0,  2, 1, 1,
+  3, 0, 0,  1, 1, 1,
+  2, 0, 0,  0, 1, 1,
+  1, 0, 1,
+  0, 0, 1,
+
+  0, 0, 1,	// Extra delay
+
+  9, 9, 9,	// End marker
+
+} ;
+
+
+int main (void)
+{
+  int pin ;
+  int dataPtr ;
+  int l, s, d ;
+
+  printf ("Raspberry Pi wiringPi test program\n") ;
+
+  if (wiringPiSetup () == -1)
+    exit (1) ;
+
+  for (pin = 0 ; pin < 8 ; ++pin)
+    pinMode (pin, OUTPUT) ;
+
+  pinMode (8, INPUT) ; 	// Pin 8 SDA0 - Has on-board 2k2 pull-up resistor
+
+  dataPtr = 0 ;
+
+  for (;;)
+  {
+    l = data [dataPtr++] ;	// LED
+    s = data [dataPtr++] ;	// State
+    d = data [dataPtr++] ;	// Duration (10ths)
+
+    if ((l + s + d) == 27)
+    {
+      dataPtr = 0 ;
+      continue ;
+    }
+
+    digitalWrite (l, s) ;
+
+    if (digitalRead (8) == 0)	// Pressed as our switch shorts to ground
+      delay (d * 10) ;	// Faster!
+    else
+      delay (d * 100) ;
+  }
+
+  return 0 ;
+}

examples/test2.c

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+
+/*
+ * test2.c:
+ *	Simple test program to test the wiringPi functions
+ *	PWM test
+ */
+
+#include <wiringPi.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+
+int main (void)
+{
+  int bright ;
+
+  printf ("Raspberry Pi wiringPi PWM test program\n") ;
+
+  if (wiringPiSetup () == -1)
+    exit (1) ;
+
+  pinMode (1, PWM_OUTPUT) ;
+
+  for (;;)
+  {
+    for (bright = 0 ; bright < 1024 ; ++bright)
+    {
+      pwmWrite (1, bright) ;
+      delay (1) ;
+    }
+
+    for (bright = 1023 ; bright >= 0 ; --bright)
+    {
+      pwmWrite (1, bright) ;
+      delay (1) ;
+    }
+  }
+
+  return 0 ;
+}