Diff: MCP23S17.h

Revision:

7:53498e24592c

Parent:

6:7b5e59c0e71c

Child:

8:841b19734955

--- a/MCP23S17.h	Sun Aug 22 12:41:26 2010 +0000
+++ b/MCP23S17.h	Sun Aug 22 15:37:25 2010 +0000
@@ -1,145 +1,62 @@
-/* MCP23S17 - drive the Microchip MCP23S17 16-bit Port Extender using SPI
-* Copyright (c) 2010 Romilly Cocking
-* Released under the MIT License: http://mbed.org/license/mit
-*
-* version 0.1
-*/
-#include "mbed.h"
-
-#ifndef  SER23K256_H
-#define  SER23K256_H
-
-// all register addresses assume IOCON.BANK = 0 (POR default)
-
-#define IODIRA   0x00
-#define IODIRB   0x01
-#define GPINTENA 0x04
-#define IOCON    0x0A
-#define GPIOA    0x12
-#define GPIOB    0x13
-#define OLATA    0x14
-#define OLATB    0x15
-
-// Control settings
-
-#define IOCON_BANK  0x80 // Banked registers
-#define IOCON_BYTE_MODE 0x20 // Disables sequential operation. If bank = 0, operations toggle between A and B registers
-#define IOCON_HAEN  0x08 // Hardware address enable
-
-class MCP23S17 {
-public:
-    MCP23S17(SPI& spi, PinName ncs, char writeOpcode);
-    void directionA(char direction);
-    void directionB(char direction);
-    void gpIntEnA(char interruptsEnabledMask);
-    char inputA();
-    char inputB();
-    void outputA(char byte);
-    void outputB(char byte);
-protected:
-    SPI& _spi;
-    DigitalOut _ncs;
-    void _init();
-    void _write(char address, char data);
-    char _read(char address);
-    char _readOpcode;
-    char _writeOpcode;
-};
-
-#endif/* MCP23S17 - drive the Microchip MCP23S17 16-bit Port Extender using SPI
-* Copyright (c) 2010 Romilly Cocking
-* Released under the MIT License: http://mbed.org/license/mit
-*
-* version 0.1
-*/
-#include "mbed.h"
-
-#ifndef  SER23K256_H
-#define  SER23K256_H
-
-// all register addresses assume IOCON.BANK = 0 (POR default)
-
-#define IODIRA   0x00
-#define IODIRB   0x01
-#define GPINTENA 0x04
-#define IOCON    0x0A
-#define GPIOA    0x12
-#define GPIOB    0x13
-#define OLATA    0x14
-#define OLATB    0x15
-
-// Control settings
-
-#define IOCON_BANK  0x80 // Banked registers
-#define IOCON_BYTE_MODE 0x20 // Disables sequential operation. If bank = 0, operations toggle between A and B registers
-#define IOCON_HAEN  0x08 // Hardware address enable
-
-class MCP23S17 {
-public:
-    MCP23S17(SPI& spi, PinName ncs, char writeOpcode);
-    void directionA(char direction);
-    void directionB(char direction);
-    void gpIntEnA(char interruptsEnabledMask);
-    char inputA();
-    char inputB();
-    void outputA(char byte);
-    void outputB(char byte);
-protected:
-    SPI& _spi;
-    DigitalOut _ncs;
-    void _init();
-    void _write(char address, char data);
-    char _read(char address);
-    char _readOpcode;
-    char _writeOpcode;
-};
-
-#endif/* MCP23S17 - drive the Microchip MCP23S17 16-bit Port Extender using SPI
-* Copyright (c) 2010 Romilly Cocking
-* Released under the MIT License: http://mbed.org/license/mit
-*
-* version 0.1
-*/
-#include "mbed.h"
-
-#ifndef  SER23K256_H
-#define  SER23K256_H
-
-// all register addresses assume IOCON.BANK = 0 (POR default)
-
-#define IODIRA   0x00
-#define IODIRB   0x01
-#define GPINTENA 0x04
-#define IOCON    0x0A
-#define GPIOA    0x12
-#define GPIOB    0x13
-#define OLATA    0x14
-#define OLATB    0x15
-
-// Control settings
-
-#define IOCON_BANK  0x80 // Banked registers
-#define IOCON_BYTE_MODE 0x20 // Disables sequential operation. If bank = 0, operations toggle between A and B registers
-#define IOCON_HAEN  0x08 // Hardware address enable
-
-class MCP23S17 {
-public:
-    MCP23S17(SPI& spi, PinName ncs, char writeOpcode);
-    void directionA(char direction);
-    void directionB(char direction);
-    void gpIntEnA(char interruptsEnabledMask);
-    char inputA();
-    char inputB();
-    void outputA(char byte);
-    void outputB(char byte);
-protected:
-    SPI& _spi;
-    DigitalOut _ncs;
-    void _init();
-    void _write(char address, char data);
-    char _read(char address);
-    char _readOpcode;
-    char _writeOpcode;
-};
-
+/* MCP23S17 - drive the Microchip MCP23S17 16-bit Port Extender using SPI
+* Copyright (c) 2010 Romilly Cocking
+* Released under the MIT License: http://mbed.org/license/mit
+*
+* version 0.2
+*/
+#include "mbed.h"
+
+#ifndef  MCP23S17_H
+#define  MCP23S17_H
+
+#define INTERRUPT_POLARITY_BIT 0x02
+#define INTERRUPT_MIRROR_BIT   0x40
+
+// all register addresses assume IOCON.BANK = 0 (POR default)
+
+#define IODIRA   0x00
+#define IODIRB   0x01
+#define GPINTENA 0x04
+#define GPINTENB 0x05
+#define DEFVALA  0x06
+#define INTCONA  0x08
+#define IOCON    0x0A
+#define GPIOA    0x12
+#define GPIOB    0x13
+#define OLATA    0x14
+#define OLATB    0x15
+
+// Control settings
+
+#define IOCON_BANK  0x80 // Banked registers
+#define IOCON_BYTE_MODE 0x20 // Disables sequential operation. If bank = 0, operations toggle between A and B registers
+#define IOCON_HAEN  0x08 // Hardware address enable
+
+enum Polarity { ACTIVE_LOW , ACTIVE_HIGH };
+
+class MCP23S17 {
+public:
+    MCP23S17(SPI& spi, PinName ncs, char writeOpcode);
+    void directionA(char direction);
+    void directionB(char direction);
+    void interruptEnableA(char interruptsEnabledMask);
+    void interruptEnableB(char interruptsEnabledMask);
+    void interruptPolarity(Polarity polarity);
+    void mirrorInterrupts(bool mirror);
+    void defaultValueA(char valuesToCompare);
+    void interruptControlA(char interruptContolBits);
+    char inputA();
+    char inputB();
+    void outputA(char byte);
+    void outputB(char byte);
+protected:
+    SPI& _spi;
+    DigitalOut _ncs;
+    void _init();
+    void _write(char address, char data);
+    char _read(char address);
+    char _readOpcode;
+    char _writeOpcode;
+};
+
 #endif
\ No newline at end of file