Sam Grove / PCA9534

Driver for IO expander

PCA9534.h@0:fe2b1519a978, 2014-04-02 (annotated)

Committer:
sam_grove
Date:
Wed Apr 02 03:49:20 2014 +0000
Revision:
0:fe2b1519a978
Initial Commit

Who changed what in which revision?

UserRevisionLine numberNew contents of line
sam_grove 0:fe2b1519a978 1
sam_grove 0:fe2b1519a978 2 #ifndef PCA9534_H
sam_grove 0:fe2b1519a978 3 #define PCA9534_H
sam_grove 0:fe2b1519a978 4
sam_grove 0:fe2b1519a978 5 #include "mbed.h"
sam_grove 0:fe2b1519a978 6
sam_grove 0:fe2b1519a978 7 class PCA9534
sam_grove 0:fe2b1519a978 8 {
sam_grove 0:fe2b1519a978 9 private:
sam_grove 0:fe2b1519a978 10 I2C *_i2c;
sam_grove 0:fe2b1519a978 11 InterruptIn *_irq;
sam_grove 0:fe2b1519a978 12 int _address;
sam_grove 0:fe2b1519a978 13
sam_grove 0:fe2b1519a978 14 enum BIT_LOC {
sam_grove 0:fe2b1519a978 15 B0, B1, B2, B3, B4, B5, B6, B7
sam_grove 0:fe2b1519a978 16 };
sam_grove 0:fe2b1519a978 17
sam_grove 0:fe2b1519a978 18 private:
sam_grove 0:fe2b1519a978 19 char readRegister(char reg);
sam_grove 0:fe2b1519a978 20 int writeRegister(char reg, char val);
sam_grove 0:fe2b1519a978 21 void irqHandler(void);
sam_grove 0:fe2b1519a978 22
sam_grove 0:fe2b1519a978 23 public:
sam_grove 0:fe2b1519a978 24 PCA9534(I2C &i2c, char address, InterruptIn &irq);
sam_grove 0:fe2b1519a978 25 int input(char val);
sam_grove 0:fe2b1519a978 26 int input(BIT_LOC bit);
sam_grove 0:fe2b1519a978 27 int output(char val);
sam_grove 0:fe2b1519a978 28 int output(BIT_LOC bit);
sam_grove 0:fe2b1519a978 29 int read(void);
sam_grove 0:fe2b1519a978 30 int read(BIT_LOC bit);
sam_grove 0:fe2b1519a978 31 int write(char val);
sam_grove 0:fe2b1519a978 32 int write(BIT_LOC bit);
sam_grove 0:fe2b1519a978 33
sam_grove 0:fe2b1519a978 34 };
sam_grove 0:fe2b1519a978 35
sam_grove 0:fe2b1519a978 36 #endif