c++ "guards" to all includes, configuring c++ include paths

crcscheduler.h

@@ -17,6 +17,10 @@
 #include <platform/crc_ll.h>
 #include <f4ll_c/dmahelper.h>
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 struct crcslottask_t {
 	void * volatile address;
 	uint16_t wordCount;
@@ -61,4 +65,8 @@ void Crc_ComputeAsync(struct crcstatus_t *status, uint8_t slot,
 		void (*callback)(void*, uint32_t, uint8_t), void* callbackParam);
 void Crc_HandleDmaIrq(struct crcstatus_t *status);
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif /* CRC_HANDLER_H_ */