Jolyon Hill / MCP23S17

Important changes to repositories hosted on mbed.com

Mbed hosted mercurial repositories are deprecated and are due to be permanently deleted in July 2026.

To keep a copy of this software download the repository Zip archive or clone locally using Mercurial.

It is also possible to export all your personal repositories from the account settings page.

Dependents:   ColourSensor

Fork of MCP23S17 by Romilly Cocking

Files at this revision

API Documentation at this revision

Revision 10:d00c555d15b2, committed 2016-08-12

Comitter:
jolyon
Date:
Fri Aug 12 11:00:31 2016 +0000
Parent:
9:068b1e8909bb
Commit message:
Adding SPI & programmable thresholds

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 
--- a/MCP23S17.cpp	Sat Aug 28 09:48:38 2010 +0000
+++ b/MCP23S17.cpp	Fri Aug 12 11:00:31 2016 +0000
@@ -40,7 +40,7 @@
 }
 
 void MCP23S17::_init() {
-    _write(IOCON, (IOCON_BYTE_MODE | IOCON_HAEN )); // Hardware addressing on, operations toggle between A and B registers
+    _write(SPIIOCON, (IOCON_BYTE_MODE | IOCON_HAEN )); // Hardware addressing on, operations toggle between A and B registers
 }
 
 void MCP23S17::direction(Port port, char direction) {
@@ -56,24 +56,24 @@
 }
 
 void MCP23S17::mirrorInterrupts(bool mirror) {
- char iocon = _read(IOCON);
+ char iocon = _read(SPIIOCON);
     if (mirror) {
         iocon = iocon | INTERRUPT_MIRROR_BIT;
     } else {
         iocon = iocon & ~INTERRUPT_MIRROR_BIT;
     }
-    _write(IOCON, iocon);
+    _write(SPIIOCON, iocon);
 
 }
 
 void  MCP23S17::interruptPolarity(Polarity polarity) {
-    char iocon = _read(IOCON);
+    char iocon = _read(SPIIOCON);
     if (polarity == ACTIVE_LOW) {
         iocon = iocon & ~INTERRUPT_POLARITY_BIT;
     } else {
         iocon = iocon | INTERRUPT_POLARITY_BIT;
     }
-    _write(IOCON, iocon);
+    _write(SPIIOCON, iocon);
 }
 
 void MCP23S17::defaultValue(Port port, char valuesToCompare) {

--- a/MCP23S17.h	Sat Aug 28 09:48:38 2010 +0000
+++ b/MCP23S17.h	Fri Aug 12 11:00:31 2016 +0000
@@ -18,7 +18,7 @@
 #define GPINTENA 0x04
 #define DEFVALA  0x06
 #define INTCONA  0x08
-#define IOCON    0x0A
+#define SPIIOCON    0x0A
 #define GPPUA    0x0C
 #define GPIOA    0x12
 #define OLATA    0x14