Improved raw transition speed

Author: calcinai

README.md

@@ -75,8 +75,8 @@ $board->getLoop()->run();
 
 GPIO (input) is the default mode of the pin objects. Alternate functions can be accessed by using the ```->setFunction(PinFunction::x)``` method.  It is
  recommended to use the function names as opposed to `ALT0..5` unless you know exactly what you're doing, as quite a lot are reserved.
-A few useful classes are also included for digital interaction.  With the default python-mmap, you can expect a raw transition speed of ~15kHz, with the
-native extension, it's more like 50kHz on a Pi 3.
+A few useful classes are also included for digital interaction.  With the default python-mmap, you can expect a raw transition speed of ~20kHz, with the
+native extension, it's more like 80kHz on a Pi 3.
 
 
 ### PWM

src/PHPi/Pin.php

@@ -209,28 +209,40 @@ public function assertFunction(array $valid_functions){
     }
 
 
+    /**
+     * Raw pin transition with fast mode, fast mode ignores all checks and event emitters
+     *
+     * @param bool $fast_mode
+     * @return $this
+     * @throws InvalidPinFunctionException
+     */
     public function high($fast_mode = false){
 
         if(!$fast_mode){
             $this->assertFunction([PinFunction::OUTPUT]);
+            $this->setInternalLevel(self::LEVEL_HIGH);
         }
 
-        $this->setInternalLevel(self::LEVEL_HIGH);
-
         list($bank, $mask) = $this->getAddressMask();
         $this->gpio_register[Register\GPIO::$GPSET[$bank]] = $mask;
 
         return $this;
     }
 
+    /**
+     * Raw pin transition with fast mode, fast mode ignores all checks and event emitters
+     *
+     * @param bool $fast_mode
+     * @return $this
+     * @throws InvalidPinFunctionException
+     */
     public function low($fast_mode = false){
 
         if(!$fast_mode){
             $this->assertFunction([PinFunction::OUTPUT]);
+            $this->setInternalLevel(self::LEVEL_LOW);
         }
 
-        $this->setInternalLevel(self::LEVEL_LOW);
-
         list($bank, $mask) = $this->getAddressMask();
         $this->gpio_register[Register\GPIO::$GPCLR[$bank]] = $mask;