beaglebone.h: added Beaglebone Black Platform

src/arm/CMakeLists.txt added beaglebone.c as a dependency src/arm/arm.c added
initialization of beaglebone black platform src/arm/beaglebone.c mraa support
for the Beaglebone Black Rev B+C includes support for mmap access to gpio

Signed-off-by: Michael Ring <mail@michael-ring.org>
Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>

src/arm/CMakeLists.txt

@@ -2,5 +2,6 @@ message (INFO " - Adding ARM platforms")
 set (mraa_LIB_SRCS_NOAUTO ${mraa_LIB_SRCS_NOAUTO}
   ${PROJECT_SOURCE_DIR}/src/arm/arm.c
   ${PROJECT_SOURCE_DIR}/src/arm/raspberry_pi.c
+  ${PROJECT_SOURCE_DIR}/src/arm/beaglebone.c
   PARENT_SCOPE
 )

src/arm/arm.c

@@ -28,6 +28,7 @@
 
 #include "mraa_internal.h"
 #include "arm/raspberry_pi.h"
+#include "arm/beaglebone.h"
 
 mraa_platform_t
 mraa_arm_platform()
@@ -45,6 +46,9 @@ mraa_arm_platform()
                 if (strstr(line, "BCM2709")) {
                     platform_type = MRAA_RASPBERRY_PI;
                 }
+                if (strstr(line, "Generic AM33XX")) {
+                    platform_type = MRAA_BEAGLEBONE;
+                }
             }
         }
         fclose(fh);
@@ -55,9 +59,12 @@ mraa_arm_platform()
         case MRAA_RASPBERRY_PI:
             plat = mraa_raspberry_pi();
             break;
+        case MRAA_BEAGLEBONE:
+            plat = mraa_beaglebone();
+            break;
         default:
-            plat = mraa_raspberry_pi();
-            syslog(LOG_ERR, "Platform not supported, initialising as MRAA_RASPBERRY_PI");
+            plat = NULL;
+            syslog(LOG_ERR, "Unknown Platform, currently not supported by MRAA");
     }
     return platform_type;
 }