#ifndef I2C_EXPORT_H#define I2C_EXPORT_H/**************************************************** * * Copyright Motrola 1999 * ****************************************************//* These are the defined return values for the I2C_do_transaction function. * Any non-zero value indicates failure.  Failure modes can be added for * more detailed error reporting. */typedef enum _i2c_status{ I2C_SUCCESS     = 0, I2C_ERROR,} I2C_Status;/* These are the defined tasks for I2C_do_transaction. * Modes for SLAVE_RCV and SLAVE_XMIT will be added. */typedef enum _i2c_transaction_mode{	I2C_MASTER_RCV =  0,	I2C_MASTER_XMIT = 1,} I2C_TRANSACTION_MODE;typedef enum _i2c_interrupt_mode{	I2C_INT_DISABLE =  0,	I2C_INT_ENABLE = 1,} I2C_INTERRUPT_MODE;typedef enum _i2c_stop{	I2C_NO_STOP =  0,	I2C_STOP = 1,} I2C_STOP_MODE;typedef enum _i2c_restart{	I2C_NO_RESTART =  0,	I2C_RESTART = 1,} I2C_RESTART_MODE;/******************** App. API ******************** * The application API is for user level application * to use the functionality provided by I2C driver. * This is a "generic" I2C interface, it should contain * nothing specific to the Kahlua implementation. * Only the generic functions are exported by the library. * * Note: Its App.s responsibility to swap the data *       byte. In our API, we just transfer whatever *       we are given **************************************************//*  Initialize I2C unit with the following: *  driver's slave address *  interrupt enabled *  optional pointer to application layer print function * *  These parameters may be added: *  desired clock rate *  digital filter frequency sampling rate * *  This function must be called before I2C unit can be used. */extern I2C_Status I2C_Initialize(	unsigned char addr,            /* driver's I2C slave address */	I2C_INTERRUPT_MODE en_int,     /* 1 - enable I2C interrupt	                                * 0 - disable I2C interrupt	                                */        int (*app_print_function)(char *,...)); /* pointer to optional "printf"                                                 * provided by application                                                 *//* Perform the given I2C transaction, only MASTER_XMIT and MASTER_RCV * are implemented.  Both are only in polling mode. * * en_int controls interrupt/polling mode * act is the type of transaction * addr is the I2C address of the slave device * len is the length of data to send or receive * buffer is the address of the data buffer * stop = I2C_NO_STOP, don't signal STOP at end of transaction *        I2C_STOP, signal STOP at end of transaction * retry is the timeout retry value, currently ignored * rsta = I2C_NO_RESTART, this is not continuation of existing transaction *        I2C_RESTART, this is a continuation of existing transaction */extern I2C_Status I2C_do_transaction( I2C_INTERRUPT_MODE en_int,                                      I2C_TRANSACTION_MODE act,                                      unsigned char i2c_addr,                                      unsigned char data_addr,                                      int len,                                      char *buffer,                                      I2C_STOP_MODE stop,                                      int retry,                                      I2C_RESTART_MODE rsta);#endif