Diff: MCP4651.h

Revision:

1:82f2ef52759e

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/MCP4651.h	Wed Nov 14 20:01:50 2012 +0000
@@ -0,0 +1,71 @@
+/* mbed MCP4651 DigiPot Driver Library
+ *
+ * Copyright (c) 2012, Kevin Kent Trane US Inc
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#ifndef MCP4651_H
+#define MCP4651_H
+
+#include "mbed.h"
+
+// register names
+#define MCP4651_VOL_WIPER0  0
+#define MCP4651_VOL_WIPER1  1
+
+#define MCP4651_REG_TCON    4
+
+
+
+// Command modes
+// Left Shifted 2 bits for low nibble
+#define MCP4651_WR  0x0 // 00b
+#define MCP4651_RD  0xB // 11b
+#define MCP4651_INC 0x4 // 01b
+#define MCP4651_DEC 0x2 // 10b
+
+// Base Address of MCP4651 
+// 0101b + A2:A1:A0:R/W
+#define MCP4651_BASE 0x50
+
+class MCP4651 {
+
+public:
+
+    MCP4651(PinName sda, PinName scl, int addr);
+
+//    int SetLed  (int led, int mode);
+//    int SetMode (int mask, int mode);
+//    int Duty (int channel, float duty);
+//    int Period (int channel, float period);
+    int SetValue (int wiper, int value);
+    int GetValue (int wiper);
+
+protected:
+
+    void _write(int reg, int data);
+    int _read(int reg);
+    int _addr;
+    I2C _i2c;
+
+};
+
+
+#endif
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