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/*
* Copyright (c) 2015, Freescale Semiconductor, Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* o Redistributions of source code must retain the above copyright notice, this list
* of conditions and the following disclaimer.
*
* o Redistributions in binary form must reproduce the above copyright notice, this
* list of conditions and the following disclaimer in the documentation and/or
* other materials provided with the distribution.
*
* o Neither the name of Freescale Semiconductor, Inc. nor the names of its
* contributors may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef __I2C_XFER_H__
#define __I2C_XFER_H__
#include <stdint.h>
#include <stdbool.h>
#include "FreeRTOS.h"
#include "semphr.h"
#include "i2c_imx.h"
/* Type definitions */
typedef struct _i2c_handle {
I2C_Type *base; /*!< The base address of I2C instance. */
IRQn_Type irqNum; /*!< The interrupt interrupt request number. */
uint32_t irqPrio; /*!< The interrupt interrupt request priority. */
const uint8_t *cmdBuff; /*!< The buffer of I2C command. */
const uint8_t *txBuff; /*!< The buffer of data being sent.*/
uint8_t *rxBuff; /*!< The buffer of received data. */
uint32_t cmdSize; /*!< The remaining number of commands to be transmitted. */
uint32_t txSize; /*!< The remaining number of bytes to be transmitted. */
uint32_t rxSize; /*!< The remaining number of bytes to be received. */
bool isBusy; /*!< True if there is an active transmission. */
uint32_t operateDir; /*!< Overall I2C bus operating direction. */
uint32_t currentDir; /*!< Current Data transfer direction. */
uint32_t currentMode; /*!< Current I2C Bus role of this module. */
SemaphoreHandle_t xSemaphore; /*!< I2C internal synchronize semaphore. */
} volatile i2c_handle_t;
typedef struct _i2c_xfer_init_config {
I2C_Type *base; /*!< The base address of I2C instance. */
i2c_init_config_t config; /*!< The I2C module low-level initialize structure. */
IRQn_Type irqNum; /*!< The interrupt interrupt request number. */
uint8_t irqPrio; /*!< The interrupt interrupt request priority. */
} i2c_xfer_init_config_t;
/* Function prototypes */
#if defined(__cplusplus)
extern "C" {
#endif
void I2C_XFER_Init(i2c_handle_t *handle, i2c_xfer_init_config_t *initConfig);
bool I2C_XFER_SendDataBlocking(i2c_handle_t *handle, const uint8_t *cmdBuff, uint32_t cmdSize,
const uint8_t *txBuffer, uint32_t txSize);
uint32_t I2C_XFER_GetSendStatus(i2c_handle_t *handle);
bool I2C_XFER_ReceiveDataBlocking(i2c_handle_t *handle, const uint8_t* cmdBuff, uint32_t cmdSize,
uint8_t* rxBuffer, uint32_t rxSize);
uint32_t I2C_XFER_GetReceiveStatus(i2c_handle_t *handle);
void I2C_XFER_Handler(i2c_handle_t *handle);
#ifdef __cplusplus
}
#endif
#endif /* __I2C_XFER_H__ */
/*******************************************************************************
* EOF
******************************************************************************/
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