add FIFOBuff header file

FIFOBuff/FIFOBuffChar.h

@@ -0,0 +1,45 @@
+#ifndef FIFOBuffChar_h
+#define FIFOBuffChar_h
+
+#include <stdbool.h>
+
+// interface for a buffer with chars's
+
+// one element in the buffer
+struct FIFOBuffChar_element_s {
+    char value;
+    void* nextEl;
+};
+
+// defines all vars for the buffer to operate
+typedef FIFOBuffChar_s {
+    struct FIFOBuffChar_element_s* FirstEl_p;
+    struct FIFOBuffChar_element_s* LastEl_p;
+    unsigned char size;
+    bool full;
+} FIFOBuffChar_t;
+
+// create a fifo buffer and initilizes it with zeros
+extern FIFOBuffChar_t* FIFOBuffChar_init();
+
+// destroy a fifo buffer (free up its space)
+// returns true on success or false otherways
+extern bool FIFOBuffChar_deinit(FIFOBuffChar_t* fifo);
+
+// put value i in buffer if there is still memory avaliable
+// returns true on success or false otherways
+extern bool FIFOBuffChar_put(FIFOBuffChar_t *fifo, char i);
+
+// get value from buffer and writes it to *p if buffer not empty
+// returns true on success or false otherways
+extern bool FIFOBuffChar_get(FIFOBuffChar_t *fifo, char *p);
+
+// returns false if last put fails to gain memory and no get is called afterwards or true otherwise
+extern bool FIFOBuffChar_is_full(FIFOBuffChar_t *fifo);
+
+// returns true when buffer is empty or false otherways
+extern bool FIFOBuffChar_is_empty(FIFOBuffChar_t *fifo);
+
+extern unsigned int FIFOBuffChar_getSize();
+
+#endif