mbed library
Fork of mbed by
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?
User | Revision | Line number | New 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 |