i2cd_8xx.h

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/*
 * @brief LPC8xx I2C ROM API declarations and functions
 *
 * @note
 * Copyright(C) NXP Semiconductors, 2012
 * All rights reserved.
 *
 * @par
 * Software that is described herein is for illustrative purposes only
 * which provides customers with programming information regarding the
 * LPC products.  This software is supplied "AS IS" without any warranties of
 * any kind, and NXP Semiconductors and its licensor disclaim any and
 * all warranties, express or implied, including all implied warranties of
 * merchantability, fitness for a particular purpose and non-infringement of
 * intellectual property rights.  NXP Semiconductors assumes no responsibility
 * or liability for the use of the software, conveys no license or rights under any
 * patent, copyright, mask work right, or any other intellectual property rights in
 * or to any products. NXP Semiconductors reserves the right to make changes
 * in the software without notification. NXP Semiconductors also makes no
 * representation or warranty that such application will be suitable for the
 * specified use without further testing or modification.
 *
 * @par
 * Permission to use, copy, modify, and distribute this software and its
 * documentation is hereby granted, under NXP Semiconductors' and its
 * licensor's relevant copyrights in the software, without fee, provided that it
 * is used in conjunction with NXP Semiconductors microcontrollers.  This
 * copyright, permission, and disclaimer notice must appear in all copies of
 * this code.
 */

#ifndef __I2CD_8XX_H_
#define __I2CD_8XX_H_

#ifdef __cplusplus
extern "C" {
#endif

#define ERR_I2C_NAK                             (0x00060001UL)
#define ERR_I2C_BUFFER_OVERFLOW                 (0x00060002UL)
#define ERR_I2C_BYTE_COUNT_ERR                  (0x00060003UL)
#define ERR_I2C_LOSS_OF_ARBRITRATION            (0x00060004UL)
#define ERR_I2C_SLAVE_NOT_ADDRESSED             (0x00060005UL)
#define ERR_I2C_LOSS_OF_ARBRITRATION_NAK_BIT    (0x00060006UL)
#define ERR_I2C_GENERAL_FAILURE                 (0x00060007UL)
#define ERR_I2C_REGS_SET_TO_DEFAULT             (0x00060008UL)
#define ERR_I2C_TIMEOUT                         (0x00060009UL)

typedef void *I2C_HANDLE_T;
typedef void  (*I2C_CALLBK_T)(uint32_t err_code, uint32_t n);

typedef struct I2C_PARAM {
 uint32_t        num_bytes_send;  
 uint32_t        num_bytes_recv;  
 uint8_t *buffer_ptr_send;   
 uint8_t *buffer_ptr_recv;   
 I2C_CALLBK_T    func_pt;   
 uint8_t         stop_flag;   
 uint8_t         unused[3];
} I2C_PARAM_T;

typedef struct I2C_RESULT {
 uint32_t n_bytes_sent; 
 uint32_t n_bytes_recd; 
} I2C_RESULT_T;

typedef enum CHIP_I2C_MODE {
 IDLE,   
 MASTER_SEND, 
 MASTER_RECEIVE, 
 SLAVE_SEND,  
 SLAVE_RECEIVE 
} CHIP_I2C_MODE_T;

typedef struct  I2CD_API {
 void (*i2c_isr_handler)(I2C_HANDLE_T *handle);

 int32_t (*i2c_master_transmit_poll)(I2C_HANDLE_T *handle, I2C_PARAM_T *param, I2C_RESULT_T *result);
 int32_t (*i2c_master_receive_poll)(I2C_HANDLE_T *handle, I2C_PARAM_T *param, I2C_RESULT_T *result);
 int32_t (*i2c_master_tx_rx_poll)(I2C_HANDLE_T *handle, I2C_PARAM_T *param, I2C_RESULT_T *result);
 int32_t (*i2c_master_transmit_intr)(I2C_HANDLE_T *handle, I2C_PARAM_T *param, I2C_RESULT_T *result);
 int32_t (*i2c_master_receive_intr)(I2C_HANDLE_T *handle, I2C_PARAM_T *param, I2C_RESULT_T *result);
 int32_t (*i2c_master_tx_rx_intr)(I2C_HANDLE_T *handle, I2C_PARAM_T *param, I2C_RESULT_T *result);

 int32_t (*i2c_slave_receive_poll)(I2C_HANDLE_T *handle, I2C_PARAM_T *param, I2C_RESULT_T *result);
 int32_t (*i2c_slave_transmit_poll)(I2C_HANDLE_T *handle, I2C_PARAM_T *param, I2C_RESULT_T *result);
 int32_t (*i2c_slave_receive_intr)(I2C_HANDLE_T *handle, I2C_PARAM_T *param, I2C_RESULT_T *result);
 int32_t (*i2c_slave_transmit_intr)(I2C_HANDLE_T *handle, I2C_PARAM_T *param, I2C_RESULT_T *result);
 int32_t (*i2c_set_slave_addr)(I2C_HANDLE_T *handle, uint32_t slave_addr_0_3, uint32_t slave_mask_0);

 uint32_t        (*i2c_get_mem_size)(void);
 I2C_HANDLE_T *  (*i2c_setup)( uint32_t  i2c_base_addr, uint32_t * start_of_ram);
 int32_t         (*i2c_set_bitrate)(I2C_HANDLE_T *handle, uint32_t  P_clk_in_hz, uint32_t bitrate_in_bps);
 uint32_t        (*i2c_get_firmware_version)(void);
 CHIP_I2C_MODE_T      (*i2c_get_status)(I2C_HANDLE_T *handle);
 int32_t         (*i2c_set_timeout)(I2C_HANDLE_T *handle, uint32_t timeout);
} I2CD_API_T;

#ifdef __cplusplus
}
#endif

#endif /* __I2CD_8XX_H_ */