Updated wiringPi.c to work with some pullUpDown stuff

General tidying up of some of the code round delayMicroseconds

wiringPi/README

@@ -2,8 +2,6 @@
 WiringPi: An implementation of most of the Arduino Wiring
 	functions for the Raspberry Pi
 
--- And a lot lot more!
-
 Full details at:
 	https://projects.drogon.net/raspberry-pi/wiringpi/
 

wiringPi/wiringPi.c

@@ -402,7 +402,8 @@ void pinModeGpio (int pin, int mode)
 
 // When we change mode of any pin, we remove the pull up/downs
 
-  pullUpDnControl (pin, PUD_OFF) ;
+//  delayMicroseconds (300) ;
+//  pullUpDnControl (pin, PUD_OFF) ;
 }
 
 void pinModeWPi (int pin, int mode)
@@ -479,24 +480,19 @@ void digitalWriteSys (int pin, int value)
  *********************************************************************************
  */
 
-void pwmWriteWPi (int pin, int value)
+void pwmWriteGpio (int pin, int value)
 {
   int port ;
 
-  pin  = pinToGpio [pin & 63] ;
+  pin  = pin & 63 ;
   port = gpioToPwmPort [pin] ;
 
   *(pwm + port) = value & 0x3FF ;
 }
 
-void pwmWriteGpio (int pin, int value)
+void pwmWriteWPi (int pin, int value)
 {
-  int port ;
-
-  pin  = pin & 63 ;
-  port = gpioToPwmPort [pin] ;
-
-  *(pwm + port) = value & 0x3FF ;
+  pwmWriteGpio (pinToGpio [pin & 63], value) ;
 }
 
 void pwmWriteSys (int pin, int value)
@@ -588,28 +584,21 @@ int digitalReadSys (int pin)
  *********************************************************************************
  */
 
-void pullUpDnControlWPi (int pin, int pud)
+void pullUpDnControlGpio (int pin, int pud)
 {
-  pin  = pinToGpio [pin & 63] ;
+  pin &= 63 ;
   pud &=  3 ;
 
-  *(gpio + GPPUD)              = pud ;			delayMicroseconds (10) ;
-  *(gpio + gpioToPUDCLK [pin]) = 1 << (pin & 31) ;	delayMicroseconds (10) ;
+  *(gpio + GPPUD)              = pud ;			delayMicroseconds (5) ;
+  *(gpio + gpioToPUDCLK [pin]) = 1 << (pin & 31) ;	delayMicroseconds (5) ;
   
-  *(gpio + GPPUD)              = 0 ;
-  *(gpio + gpioToPUDCLK [pin]) = 0 ;
+  *(gpio + GPPUD)              = 0 ;			delayMicroseconds (5) ;
+  *(gpio + gpioToPUDCLK [pin]) = 0 ;			delayMicroseconds (5) ;
 }
 
-void pullUpDnControlGpio (int pin, int pud)
+void pullUpDnControlWPi (int pin, int pud)
 {
-  pin &= 63 ;
-  pud &=  3 ;
-
-  *(gpio + GPPUD)              = pud ;			delayMicroseconds (10) ;
-  *(gpio + gpioToPUDCLK [pin]) = 1 << (pin & 31) ;	delayMicroseconds (10) ;
-  
-  *(gpio + GPPUD)              = 0 ;
-  *(gpio + gpioToPUDCLK [pin]) = 0 ;
+  pullUpDnControlGpio (pinToGpio [pin & 63], pud) ;
 }
 
 void pullUpDnControlSys (int pin, int pud)
@@ -685,6 +674,7 @@ void delay (unsigned int howLong)
   nanosleep (&sleeper, &dummy) ;
 }
 
+
 /*
  * delayMicroseconds:
  *	This is somewhat intersting. It seems that on the Pi, a single call
@@ -977,5 +967,3 @@ int wiringPiSetupSys (void)
 
   return 0 ;
 }
-
-

wiringPi/wiringPi.h

@@ -86,8 +86,6 @@ extern int piHiPri (int pri) ;
 // Extras from arduino land
 
 extern void         delay             (unsigned int howLong) ;
-//extern void         delayMicroseconds (unsigned int howLong) ;
-//extern void     delayMicrosecondsHard (unsigned int howLong) ;
 extern unsigned int millis            (void) ;
 
 #ifdef __cplusplus