1 files changed, 32 insertions, 0 deletions
diff --git a/Software/Code_Composer/twine_usblib/usb_serial_buffer.c b/Software/Code_Composer/twine_usblib/usb_serial_buffer.c
new file mode 100644
index 000000000..5025bb772
--- /dev/null
+++ b/Software/Code_Composer/twine_usblib/usb_serial_buffer.c
@@ -0,0 +1,32 @@
+/*
+ * usb_serial_buffer.c
+ *
+ *  Created on: Sep 24, 2017
+ *      Author: Roy
+ */
+
+#include <stdlib.h>
+#include "usb_serial_buffer.h"
+
+void initArray(SerialBuffer *a, size_t initialSize) {
+  a->buffer = (char *)malloc(initialSize);
+  a->used = 0;
+  a->size = initialSize;
+}
+
+void insertArray(SerialBuffer *a, char element) {
+  // a->used is the number of used entries, because a->array[a->used++] updates a->used only *after* the array has been accessed.
+  // Therefore a->used can go up to a->size
+  if (a->used == a->size) {
+    a->size += 1;
+    a->buffer = (char *)realloc(a->buffer, a->size * sizeof(char));
+  }
+  a->buffer[a->used++] = element;
+}
+
+void freeArray(SerialBuffer *a) {
+  free(a->buffer);
+  a->buffer = NULL;
+  a->used = a->size = 0;
+}
+