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I2C.h@0:82220227f4fa, 2008-04-08 (annotated)

Committer:
simon.ford@mbed.co.uk
Date:
Tue Apr 08 14:12:21 2008 +0000
Revision:
0:82220227f4fa
Child:
1:6b7f447ca868
A first develoment release of the mbed libraries

Who changed what in which revision?

UserRevisionLine numberNew contents of line
simon.ford@mbed.co.uk 0:82220227f4fa 1 /* mbed Microcontroller Library - I2C
simon.ford@mbed.co.uk 0:82220227f4fa 2 * Copyright (c) 2007-2008, sford
simon.ford@mbed.co.uk 0:82220227f4fa 3 */
simon.ford@mbed.co.uk 0:82220227f4fa 4
simon.ford@mbed.co.uk 0:82220227f4fa 5 #ifndef MBED_I2C_H
simon.ford@mbed.co.uk 0:82220227f4fa 6 #define MBED_I2C_H
simon.ford@mbed.co.uk 0:82220227f4fa 7
simon.ford@mbed.co.uk 0:82220227f4fa 8 #include "Base.h"
simon.ford@mbed.co.uk 0:82220227f4fa 9
simon.ford@mbed.co.uk 0:82220227f4fa 10 namespace mbed {
simon.ford@mbed.co.uk 0:82220227f4fa 11
simon.ford@mbed.co.uk 0:82220227f4fa 12 /* Class: I2C
simon.ford@mbed.co.uk 0:82220227f4fa 13 * An I2C Master, used for communicating with I2C slave devices
simon.ford@mbed.co.uk 0:82220227f4fa 14 */
simon.ford@mbed.co.uk 0:82220227f4fa 15 class I2C : public Base {
simon.ford@mbed.co.uk 0:82220227f4fa 16
simon.ford@mbed.co.uk 0:82220227f4fa 17 public:
simon.ford@mbed.co.uk 0:82220227f4fa 18
simon.ford@mbed.co.uk 0:82220227f4fa 19 /* Group: Configuration Methods */
simon.ford@mbed.co.uk 0:82220227f4fa 20
simon.ford@mbed.co.uk 0:82220227f4fa 21 /* Constructor: I2C
simon.ford@mbed.co.uk 0:82220227f4fa 22 * Create an I2C Master interface, connected to the specified pins
simon.ford@mbed.co.uk 0:82220227f4fa 23 *
simon.ford@mbed.co.uk 0:82220227f4fa 24 * Variables:
simon.ford@mbed.co.uk 0:82220227f4fa 25 * sda - I2C data line pin
simon.ford@mbed.co.uk 0:82220227f4fa 26 * scl - I2C clock line pin
simon.ford@mbed.co.uk 0:82220227f4fa 27 *
simon.ford@mbed.co.uk 0:82220227f4fa 28 * Pin Options:
simon.ford@mbed.co.uk 0:82220227f4fa 29 * (9, 10) or (28, 27)
simon.ford@mbed.co.uk 0:82220227f4fa 30 */
simon.ford@mbed.co.uk 0:82220227f4fa 31 I2C(int sda, int scl);
simon.ford@mbed.co.uk 0:82220227f4fa 32
simon.ford@mbed.co.uk 0:82220227f4fa 33 /* Function: frequency
simon.ford@mbed.co.uk 0:82220227f4fa 34 * Set the frequency of the I2C interface
simon.ford@mbed.co.uk 0:82220227f4fa 35 *
simon.ford@mbed.co.uk 0:82220227f4fa 36 * Variables:
simon.ford@mbed.co.uk 0:82220227f4fa 37 * hz - The bus frequency in hertz
simon.ford@mbed.co.uk 0:82220227f4fa 38 */
simon.ford@mbed.co.uk 0:82220227f4fa 39 void frequency(int hz);
simon.ford@mbed.co.uk 0:82220227f4fa 40
simon.ford@mbed.co.uk 0:82220227f4fa 41 /* Group: Access Methods */
simon.ford@mbed.co.uk 0:82220227f4fa 42
simon.ford@mbed.co.uk 0:82220227f4fa 43 /* Function: read
simon.ford@mbed.co.uk 0:82220227f4fa 44 * Read from an I2C slave
simon.ford@mbed.co.uk 0:82220227f4fa 45 *
simon.ford@mbed.co.uk 0:82220227f4fa 46 * Variables:
simon.ford@mbed.co.uk 0:82220227f4fa 47 * address - 7-bit I2C slave address (0-127)
simon.ford@mbed.co.uk 0:82220227f4fa 48 * data - Pointer to the byte-array to read data in to
simon.ford@mbed.co.uk 0:82220227f4fa 49 * length - Number of bytes to read
simon.ford@mbed.co.uk 0:82220227f4fa 50 */
simon.ford@mbed.co.uk 0:82220227f4fa 51 void read(int address, char* data, int length);
simon.ford@mbed.co.uk 0:82220227f4fa 52
simon.ford@mbed.co.uk 0:82220227f4fa 53 /* Function: write
simon.ford@mbed.co.uk 0:82220227f4fa 54 * Write to an I2C slave
simon.ford@mbed.co.uk 0:82220227f4fa 55 *
simon.ford@mbed.co.uk 0:82220227f4fa 56 * Variables:
simon.ford@mbed.co.uk 0:82220227f4fa 57 * address - 7-bit I2C slave address (0-127)
simon.ford@mbed.co.uk 0:82220227f4fa 58 * data - Pointer to the byte-array data to send
simon.ford@mbed.co.uk 0:82220227f4fa 59 * length - Number of bytes to send
simon.ford@mbed.co.uk 0:82220227f4fa 60 */
simon.ford@mbed.co.uk 0:82220227f4fa 61 void write(int address, char* data, int length);
simon.ford@mbed.co.uk 0:82220227f4fa 62
simon.ford@mbed.co.uk 0:82220227f4fa 63 protected:
simon.ford@mbed.co.uk 0:82220227f4fa 64
simon.ford@mbed.co.uk 0:82220227f4fa 65 void configure();
simon.ford@mbed.co.uk 0:82220227f4fa 66
simon.ford@mbed.co.uk 0:82220227f4fa 67 int _id;
simon.ford@mbed.co.uk 0:82220227f4fa 68
simon.ford@mbed.co.uk 0:82220227f4fa 69 int _uid;
simon.ford@mbed.co.uk 0:82220227f4fa 70 static int _uidcounter;
simon.ford@mbed.co.uk 0:82220227f4fa 71
simon.ford@mbed.co.uk 0:82220227f4fa 72 int _hz;
simon.ford@mbed.co.uk 0:82220227f4fa 73 static int _config[3];
simon.ford@mbed.co.uk 0:82220227f4fa 74
simon.ford@mbed.co.uk 0:82220227f4fa 75 };
simon.ford@mbed.co.uk 0:82220227f4fa 76
simon.ford@mbed.co.uk 0:82220227f4fa 77 }
simon.ford@mbed.co.uk 0:82220227f4fa 78
simon.ford@mbed.co.uk 0:82220227f4fa 79 #endif