pio: Remove pio headers from MRAA

The Native PIO API provides both the libraries and headers for use with
the Android Things Peripheralanager client.  This commit removes these
from the MRAA repo in favor of the FindAndroidThings.cmake provided by
the Native PIO API.

Signed-off-by: Noel Eck <noel.eck@intel.com>

src/CMakeLists.txt

@@ -138,10 +138,18 @@ endif()
 
 if (PERIPHERALMAN)
   set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -DPERIPHERALMAN=1")
+
   # Use the find_package provided by Android Things.  Make sure this is
   # available in CMAKE_MODULE_PATH.
   find_package(AndroidThings REQUIRED)
+
+  # Add Android Things libraries
   set (mraa_LIBS ${mraa_LIBS} ${ANDROIDTHINGS_LIBRARIES})
+
+  # Add Android Things include directories
+  include_directories(${ANDROIDTHINGS_INCLUDE_DIRS})
+
+  # Add the peripheral manager source to the build
   add_subdirectory(peripheralman)
 endif()
 

src/mraa.c

@@ -64,7 +64,7 @@
 #include "uart.h"
 
 #if defined(PERIPHERALMAN)
-#include "peripheralman.h"
+#include "peripheralmanager/peripheralman.h"
 #else
 #define IIO_DEVICE_WILDCARD "iio:device*"
 

src/peripheralman/peripheralman.c

@@ -27,7 +27,7 @@
 #include <syslog.h>
 
 #include "mraa_internal.h"
-#include "peripheralman.h"
+#include "peripheralmanager/peripheralman.h"
 
 APeripheralManagerClient *client = NULL;
 char **gpios = NULL;

src/spi/spi.c

@@ -30,7 +30,6 @@
 #endif
 #include <sys/ioctl.h>
 #if defined(PERIPHERALMAN)
-#include "peripheralmanager/spi_device.h"
 #include "linux/spi_kernel_headers.h"
 #elif defined(MSYS)
 // There's no spidev.h on MSYS, so we need to provide our own,