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i2c.hpp: Add C++ wrapper around I2c

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* maa_i2c_context bcomes an opaque pointer
* C++ wrapper class I2c created
* swig now uses C++ wrapper I2c to generate API

Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>
This commit is contained in:
Brendan Le Foll
2014-05-16 10:28:26 +01:00
parent 9e823b7f1d
commit e491f99228
7 changed files with 104 additions and 71 deletions
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28
api/i2c.h
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@@ -42,29 +42,23 @@ extern "C" {
#include "gpio.h"
/**
* A structure representing an i2c device /dev/i2c-*
* Opaque pointer definition to the internal struct _i2c
*/
typedef struct {
/*@{*/
int hz; /**< frequency of communication */
int fh; /**< the file handle to the /dev/i2c-* device */
int addr; /**< the address of the i2c slave */
/*@}*/
} maa_i2c_context;
typedef struct _i2c* maa_i2c_context;
/** Initialise i2c context, using board defintions
*
* @param bus i2c bus to use
* @return maa_i2c_context i2c context ready for other calls.
*/
maa_i2c_context* maa_i2c_init(int bus);
maa_i2c_context maa_i2c_init(int bus);
/** Initialise i2c context, passing in spi bus to use.
*
* @param bus The i2c bus to use i.e. /dev/i2c-2 would be "2"
* @return maa_i2c_context i2c context ready for other calls.
*/
maa_i2c_context* maa_i2c_init_raw(unsigned int bus);
maa_i2c_context maa_i2c_init_raw(unsigned int bus);
/** Sets the frequency of the i2c context
*
@@ -73,7 +67,7 @@ maa_i2c_context* maa_i2c_init_raw(unsigned int bus);
*
* @return maa_result_t the maa result.
*/
maa_result_t maa_i2c_frequency(maa_i2c_context* dev, int hz);
maa_result_t maa_i2c_frequency(maa_i2c_context dev, int hz);
/** Read from an i2c context
*
@@ -83,7 +77,7 @@ maa_result_t maa_i2c_frequency(maa_i2c_context* dev, int hz);
*
* @return maa_result_t the maa result.
*/
maa_result_t maa_i2c_read(maa_i2c_context* dev, char *data, int length);
maa_result_t maa_i2c_read(maa_i2c_context dev, const char *data, int length);
/** Read a single byte from the i2c context
*
@@ -91,7 +85,7 @@ maa_result_t maa_i2c_read(maa_i2c_context* dev, char *data, int length);
*
* @return byte the result of the read or -1 if failed.
*/
int maa_i2c_read_byte(maa_i2c_context* dev);
int maa_i2c_read_byte(maa_i2c_context dev);
/** Write to an i2c context
*
@@ -101,7 +95,7 @@ int maa_i2c_read_byte(maa_i2c_context* dev);
*
* @return maa_result_t the maa result.
*/
maa_result_t maa_i2c_write(maa_i2c_context* dev, const char *data, int length);
maa_result_t maa_i2c_write(maa_i2c_context dev, char *data, int length);
/** Write a single byte to an i2c context
*
@@ -110,7 +104,7 @@ maa_result_t maa_i2c_write(maa_i2c_context* dev, const char *data, int length);
*
* @return maa_result_t the maa result.
*/
maa_result_t maa_i2c_write_byte(maa_i2c_context* dev, int data);
maa_result_t maa_i2c_write_byte(maa_i2c_context dev, int data);
/** Sets the i2c context address.
*
@@ -121,7 +115,7 @@ maa_result_t maa_i2c_write_byte(maa_i2c_context* dev, int data);
*
* @return maa_result_t the maa result.
*/
maa_result_t maa_i2c_address(maa_i2c_context* dev, int address);
maa_result_t maa_i2c_address(maa_i2c_context dev, int address);
/** De-inits an maa_i2c_context device
*
@@ -129,7 +123,7 @@ maa_result_t maa_i2c_address(maa_i2c_context* dev, int address);
*
* @return maa_result_t the maa result.
*/
maa_result_t maa_i2c_stop(maa_i2c_context* dev);
maa_result_t maa_i2c_stop(maa_i2c_context dev);
#ifdef __cplusplus
}