initial cleanup and mapping

2016-08-18 21:52:18 +03:00
parent 1d89a05234
commit faf062af8b
155 changed files with 23233 additions and 0 deletions
--- a/examples/PiFace/motor.c
+++ b/examples/PiFace/motor.c
@ -0,0 +1,120 @@
+/*
+ * motor.c:
+ *	Use the PiFace board to demonstrate an H bridge
+ *	circuit via the 2 relays.
+ *	Then add on an external transsitor to help with PWM.
+ *
+ * Copyright (c) 2012-2013 Gordon Henderson. <projects@drogon.net>
+ ***********************************************************************
+ * This file is part of wiringPi:
+ *	https://projects.drogon.net/raspberry-pi/wiringpi/
+ *
+ *    wiringPi 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 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 Lesser General Public License for more details.
+ *
+ *    You should have received a copy of the GNU Lesser General Public License
+ *    along with wiringPi.  If not, see <http://www.gnu.org/licenses/>.
+ ***********************************************************************
+ */
+
+#include <wiringPi.h>
+#include <piFace.h>
+#include <softPwm.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+
+int outputs [2] = { 0,0 } ;
+
+#define	PIFACE_BASE	200
+#define PWM_OUT_PIN	204
+#define	PWM_UP		202
+#define	PWM_DOWN	203
+
+void scanButton (int button)
+{
+  if (digitalRead (PIFACE_BASE + button) == LOW)
+  {
+    outputs [button] ^= 1 ;
+    digitalWrite (PIFACE_BASE + button, outputs [button]) ;
+    printf ("Button %d pushed - output now: %s\n",
+		button, (outputs [button] == 0) ? "Off" : "On") ;
+  }
+
+  while (digitalRead (PIFACE_BASE + button) == LOW)
+    delay (1) ;
+}
+
+
+int main (void)
+{
+  int pin, button ;
+  int pwmValue = 0 ;
+
+  printf ("Raspberry Pi PiFace - Motor control\n") ;
+  printf ("==================================\n") ;
+  printf ("\n") ;
+  printf (
+"This program is designed to be used with a motor connected to the relays\n"
+"in an H-Bridge type configuration with optional speeed control via PWM.\n"
+"\n"
+"Use the leftmost buttons to turn each relay on and off, and the rigthmost\n"
+"buttons to increase ot decrease the PWM output on the control pin (pin\n"
+"4)\n\n") ;
+
+  wiringPiSetup () ;
+  piFaceSetup (PIFACE_BASE) ;
+  softPwmCreate (PWM_OUT_PIN, 100, 100) ;
+
+// Enable internal pull-ups & start with all off
+
+  for (pin = 0 ; pin < 8 ; ++pin)
+  {
+    pullUpDnControl (PIFACE_BASE + pin, PUD_UP) ;
+    digitalWrite    (PIFACE_BASE + pin, 0) ;
+  }
+
+  for (;;)
+  {
+    for (button = 0 ; button < 2 ; ++button)
+      scanButton (button) ;
+
+    if (digitalRead (PWM_UP) == LOW)
+    {
+      pwmValue += 10 ;
+      if (pwmValue > 100)
+	pwmValue = 100 ;
+
+      softPwmWrite (PWM_OUT_PIN, pwmValue) ;
+      printf ("PWM -> %3d\n", pwmValue) ;
+
+      while (digitalRead (PWM_UP) == LOW)
+	delay (5) ;
+    }
+
+    if (digitalRead (PWM_DOWN) == LOW)
+    {
+      pwmValue -= 10 ;
+      if (pwmValue < 0)
+	pwmValue = 0 ;
+
+      softPwmWrite (PWM_OUT_PIN, pwmValue) ;
+      printf ("PWM -> %3d\n", pwmValue) ;
+
+      while (digitalRead (PWM_DOWN) == LOW)
+	delay (5) ;
+    }
+
+    delay (5) ;
+  }
+
+  return 0 ;
+}