Directory transmitter renamed to radio

2013-12-02 07:13:57 +01:00
parent f4df52a033
commit 942e658c8e
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+/*
+ * Authors (alphabetical order)
+ * - Andre Bernet <bernet.andre@gmail.com>
+ * - Andreas Weitl
+ * - Bertrand Songis <bsongis@gmail.com>
+ * - Bryan J. Rentoul (Gruvin) <gruvin@gmail.com>
+ * - Cameron Weeks <th9xer@gmail.com>
+ * - Erez Raviv
+ * - Gabriel Birkus
+ * - Jean-Pierre Parisy
+ * - Karl Szmutny
+ * - Michael Blandford
+ * - Michal Hlavinka
+ * - Pat Mackenzie
+ * - Philip Moss
+ * - Rob Thomson
+ * - Romolo Manfredini <romolo.manfredini@gmail.com>
+ * - Thomas Husterer
+ *
+ * opentx is based on code named
+ * gruvin9x by Bryan J. Rentoul: http://code.google.com/p/gruvin9x/,
+ * er9x by Erez Raviv: http://code.google.com/p/er9x/,
+ * and the original (and ongoing) project by
+ * Thomas Husterer, th9x: http://code.google.com/p/th9x/
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ */
+
+#ifndef fifo_h
+#define fifo_h
+
+template <int N>
+class Fifo
+{
+  public:
+    Fifo():
+      widx(0),
+      ridx(0)
+    {
+    }
+
+    void push(uint8_t byte) {
+      uint32_t next = (widx+1) & (N-1);
+      if (next != ridx) {
+        fifo[widx] = byte;
+        widx = next;
+      }
+    }
+
+    bool pop(uint8_t & byte) {
+      if (ridx == widx) {
+        return false;
+      }
+      else {
+        byte = fifo[ridx];
+        ridx = (ridx+1) & (N-1);
+        return true;
+      }
+    }
+
+  protected:
+    uint8_t fifo[N];
+    volatile uint32_t widx;
+    volatile uint32_t ridx;
+};
+
+#endif