Sam Grove
Driver for IO expander
Diff: PCA9534.h
- Revision:
- 0:fe2b1519a978
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/PCA9534.h Wed Apr 02 03:49:20 2014 +0000
@@ -0,0 +1,36 @@
+
+#ifndef PCA9534_H
+#define PCA9534_H
+
+#include "mbed.h"
+
+class PCA9534
+{
+private:
+ I2C *_i2c;
+ InterruptIn *_irq;
+ int _address;
+
+ enum BIT_LOC {
+ B0, B1, B2, B3, B4, B5, B6, B7
+ };
+
+private:
+ char readRegister(char reg);
+ int writeRegister(char reg, char val);
+ void irqHandler(void);
+
+public:
+ PCA9534(I2C &i2c, char address, InterruptIn &irq);
+ int input(char val);
+ int input(BIT_LOC bit);
+ int output(char val);
+ int output(BIT_LOC bit);
+ int read(void);
+ int read(BIT_LOC bit);
+ int write(char val);
+ int write(BIT_LOC bit);
+
+};
+
+#endif