firmata: initial work

Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>

src/mraa.c

@@ -42,6 +42,7 @@
 #include <stdio.h>
 
 #include "mraa_internal.h"
+#include "firmata/firmata_mraa.h"
 #include "gpio.h"
 #include "version.h"
 
@@ -141,6 +142,10 @@ mraa_init()
     }
 #endif
 
+#if defined(FIRMATA)
+    // look for USB id 8087:0aba -> genuino/arduino 101
+#endif
+
     // Look for IIO devices
     mraa_iio_detect();
 
@@ -941,3 +946,18 @@ mraa_get_iio_device_count()
 {
     return plat_iio->iio_device_count;
 }
+
+mraa_result_t
+mraa_add_subplatform(mraa_platform_t subplatformtype, const char* uart_dev)
+{
+#ifdef FIRMATA
+    if (subplatformtype == MRAA_GENERIC_FIRMATA) {
+        if (mraa_firmata_platform(plat, uart_dev) == MRAA_GENERIC_FIRMATA) {
+            syslog(LOG_NOTICE, "mraa: Added firmata subplatform");
+            return MRAA_SUCCESS;
+        }
+    }
+#endif
+
+    return MRAA_ERROR_INVALID_PARAMETER;
+}