Diff: USBSerial/CircBuffer.h

Revision:

71:52ef20e36cab

Parent:

65:48fe9050cb4a

--- a/USBSerial/CircBuffer.h	Sun Dec 03 21:14:26 2017 +0000
+++ b/USBSerial/CircBuffer.h	Mon Dec 04 23:05:41 2017 +0000
@@ -19,16 +19,10 @@
 #ifndef CIRCBUFFER_H
 #define CIRCBUFFER_H
 
-template <class T>
+template <class T, int Size>
 class CircBuffer {
 public:
-    CircBuffer(int length) {
-        write = 0;
-        read = 0;
-        size = length + 1;
-        buf = (T *)malloc(size * sizeof(T));
-    };
-
+    CircBuffer():write(0), read(0){}
     bool isFull() {
         return ((write + 1) % size == read);
     };
@@ -62,8 +56,8 @@
 private:
     volatile uint16_t write;
     volatile uint16_t read;
-    uint16_t size;
-    T * buf;
+    static const int size = Size+1;  //a modern optimizer should be able to remove this so it uses no ram.
+    T buf[Size+1];
 };
 
 #endif