Add missing dac7678 init, fix pinModeAlt documentation, add constants for pinModeAlt

Author: nekuz0r

DOCUMENTATION.md

@@ -136,13 +136,23 @@ This is an un-documented special to let you set any pin to any mode.
 
 `mode` can be one of the following values:
 
-* `WPI_MODE_PINS`
-  <span class="api-info-list"><code> >= 1.0.0 </code></span>
-* `WPI_MODE_PHYS`
-  <span class="api-info-list"><code> >= 1.0.0 </code></span>
-* `WPI_MODE_GPIO`
-  <span class="api-info-list"><code> >= 1.0.0 </code></span>
-  
+* `FSEL_INPT`
+  <span class="api-info-list"><code> >= 2.1.0 </code></span>
+* `FSEL_OUTP`
+  <span class="api-info-list"><code> >= 2.1.0 </code></span>
+* `FSEL_ALT0`
+  <span class="api-info-list"><code> >= 2.1.0 </code></span>
+* `FSEL_ALT1`
+  <span class="api-info-list"><code> >= 2.1.0 </code></span>
+* `FSEL_ALT2`
+  <span class="api-info-list"><code> >= 2.1.0 </code></span>
+* `FSEL_ALT3`
+  <span class="api-info-list"><code> >= 2.1.0 </code></span>
+* `FSEL_ALT4`
+  <span class="api-info-list"><code> >= 2.1.0 </code></span>
+* `FSEL_ALT5`
+  <span class="api-info-list"><code> >= 2.1.0 </code></span>
+
 ### pinMode(pin, mode)
 <span class="api-info"><code> >= 0.1.0 </code></span>
 
@@ -176,7 +186,7 @@ If you need to change the pin mode, the you can do it with the gpio program in a
   <span class="api-info-list"><code> >= 1.1.0 </code></span>
 * `SOFT_TONE_OUTPUT`
   <span class="api-info-list"><code> >= 1.1.0 </code></span>
-  
+
 ### pullUpDnControl(pin, pud)
 <span class="api-info"><code> >= 0.2.0 </code></span>
 
@@ -194,7 +204,7 @@ The internal pull up/down resistors have a value of approximately 50KΩ on the R
 <span class="api-info-list"><code> >= 0.2.0 </code></span>
 * `PUD_UP` *pull to 3.3v*
 <span class="api-info-list"><code> >= 0.2.0 </code></span>
-  
+
 ### digitalRead(pin)
 <span class="api-info"><code> >= 0.1.1 </code></span>
 
@@ -258,7 +268,7 @@ Gives up and returns 0 if no pulse starts within a specified time out.
   <span class="api-info-list"><code> >= 0.1.2 </code></span>
 * `LOW`
   <span class="api-info-list"><code> >= 0.1.2 </code></span>
-  
+
 ### delay(milliseconds)
 <span class="api-info"><code> >= 1.1.0 </code></span>
 
@@ -437,7 +447,7 @@ The mark:space mode is traditional, however the default mode in the Pi is “bal
 
 * `PWM_MODE_BAL` *balanced*
 * `PWM_MODE_MS` *mark:space*
-  
+
 ### pwmSetRange(range)
 <span class="api-info"><code> >= 0.1.1 </code></span>
 
@@ -567,7 +577,7 @@ The return value is the file descriptor or -1 for any error, in which case errno
 
 **NOTE: The file descriptor (fd) returned is a standard Linux file descriptor.**
 
-**You can use the standard read(), write(), etc. system calls on this file descriptor as required.** 
+**You can use the standard read(), write(), etc. system calls on this file descriptor as required.**
 
 **E.g. you may wish to write a larger block of binary data where the serialPutchar() or serialPuts() function may not be the most appropriate function to use, in which case, you can use write() to send the data.**
 

src/extensions/extensions.cc

@@ -1,5 +1,6 @@
 #include "extensions.h"
 
+#include "dac7678.h"
 #include "drcSerial.h"
 #include "max5322.h"
 #include "max31855.h"
@@ -19,6 +20,7 @@
 #include "pca9685.h"
 
 IMPLEMENT_EXPORT_INIT(extensions) {
+  INIT(dac7678);
   INIT(drcSerial);
   INIT(max5322);
   INIT(max31855);
@@ -35,4 +37,4 @@ IMPLEMENT_EXPORT_INIT(extensions) {
   INIT(pcf8591);
   INIT(sr595);
   INIT(pca9685);
-}
+}