Romilly Cocking / MCP23S17

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Dependents:   MCP23S17Test MCP23S17_Basic_IO_Demo HelloWorld Lab3-SnakeGame ... more

Files at this revision

API Documentation at this revision

Revision 9:068b1e8909bb, committed 2010-08-28

Comitter:
romilly
Date:
Sat Aug 28 09:48:38 2010 +0000
Parent:
8:841b19734955
Commit message:
Added pull=up configuration

Changed in this revision

MCP23S17.cpp Show annotated file Show diff for this revision Revisions of this file
MCP23S17.h Show annotated file Show diff for this revision Revisions of this file 
diff -r 841b19734955 -r 068b1e8909bb MCP23S17.cpp
--- a/MCP23S17.cpp	Mon Aug 23 10:57:59 2010 +0000
+++ b/MCP23S17.cpp	Sat Aug 28 09:48:38 2010 +0000
@@ -2,7 +2,7 @@
 * Copyright (c) 2010 Romilly Cocking
 * Released under the MIT License: http://mbed.org/license/mit
 *
-* version 0.3
+* version 0.4
 */
 
 #include "mbed.h"
@@ -47,6 +47,9 @@
     _write(port, IODIRA, direction);
 }
 
+void MCP23S17::configurePullUps(Port port, char offOrOn) {
+    _write(port, GPPUA, offOrOn);
+}
 
 void MCP23S17::interruptEnable(Port port, char interruptsEnabledMask) {
     _write(port, GPINTENA, interruptsEnabledMask);

diff -r 841b19734955 -r 068b1e8909bb MCP23S17.h
--- a/MCP23S17.h	Mon Aug 23 10:57:59 2010 +0000
+++ b/MCP23S17.h	Sat Aug 28 09:48:38 2010 +0000
@@ -2,7 +2,7 @@
 * Copyright (c) 2010 Romilly Cocking
 * Released under the MIT License: http://mbed.org/license/mit
 *
-* version 0.3
+* version 0.4
 */
 #include "mbed.h"
 
@@ -15,16 +15,13 @@
 // 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 GPPUA    0x0C
 #define GPIOA    0x12
-#define GPIOB    0x13
 #define OLATA    0x14
-#define OLATB    0x15
 
 // Control settings
 
@@ -39,6 +36,7 @@
 public:
     MCP23S17(SPI& spi, PinName ncs, char writeOpcode);
     void direction(Port port, char direction);
+    void configurePullUps(Port port, char offOrOn);
     void interruptEnable(Port port, char interruptsEnabledMask);
     void interruptPolarity(Polarity polarity);
     void mirrorInterrupts(bool mirror);