Chore/bacnet-sc-unrelated-cleanup (#620)

* Added required linux Ethernet library for ethernet build

* Added .obj to gitignore

* Fixed BACnet port for APPLE to use BSD in CMake

* Changed format in CMake to enable cleaner SC merge

* Added create-object and delete-object recipes in GCC Makefile

* Added datalink timer to all example OS apps

* Changed most microcontroller ports to use BACAPP_MINIMAL to specify which datatypes can be written.

* Fixed zephyr OS for BACnet/IP warning

* Fixed zephyr OS log to not require log_strdup

* Added writefile API to file object example

* Added API to device-client to make it more robust.

* Added API in network-port object for getting the ASCII object-name

* Added debug print with a timestamp option

* Added debug print with hex dump print

* Added API to network port object for activate and discard

* Added default define for debug with timestamp

* Added prototype in header for disabled debug printf.

* Added fifo peek ahead function to peek at more than one byte.

* Added get-mac value for network port that uses buffer rather than octetstring

test/bacnet/basic/sys/fifo/src/main.c

@@ -35,6 +35,7 @@ static void testFIFOBuffer(void)
     uint8_t test_data = 0;
     unsigned index = 0;
     unsigned count = 0;
+    unsigned test_count = 0;
     bool status = 0;
 
     FIFO_Init(&test_buffer, data_store, sizeof(data_store));
@@ -133,6 +134,15 @@ static void testFIFOBuffer(void)
     zassert_false(FIFO_Empty(&test_buffer), NULL);
     FIFO_Flush(&test_buffer);
     zassert_true(FIFO_Empty(&test_buffer), NULL);
+    /* check the peak ahead feature */
+    status = FIFO_Add(&test_buffer, add_data, sizeof(add_data));
+    zassert_true(status, NULL);
+    count = FIFO_Count(&test_buffer);
+    test_count = FIFO_Peek_Ahead(&test_buffer, &test_add_data[0], count-1);
+    zassert_equal(count-1, test_count, NULL);
+    for (index = 0; index < test_count; index++) {
+        zassert_equal(test_add_data[index], add_data[index], NULL);
+    }
 
     return;
 }