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* Copyright (c) 2015-2017, Texas Instruments Incorporated
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * 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.
*
* * Neither the name of Texas Instruments Incorporated 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 OWNER 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.
*/
/*
* ======== I2CSlave.c ========
*/
#include <stdbool.h>
#include <stddef.h>
#include <stdint.h>
#include <stdlib.h>
#include <ti/drivers/dpl/HwiP.h>
#include <ti/drivers/I2CSlave.h>
extern const I2CSlave_Config I2CSlave_config[];
extern const uint_least8_t I2CSlave_count;
/* Default I2CSlave parameters structure */
const I2CSlave_Params I2CSlave_defaultParams = {
I2CSLAVE_MODE_BLOCKING, /* transferMode */
NULL, /* transferCallbackFxn */
NULL /* custom */
};
static bool isInitialized = false;
/*
* ======== I2CSlave_close ========
*/
void I2CSlave_close(I2CSlave_Handle handle)
{
handle->fxnTablePtr->closeFxn(handle);
}
/*
* ======== I2CSlave_control ========
*/
int_fast16_t I2CSlave_control(I2CSlave_Handle handle, uint_fast16_t cmd, void *arg)
{
return (handle->fxnTablePtr->controlFxn(handle, cmd, arg));
}
/*
* ======== I2CSlave_init ========
*/
void I2CSlave_init(void)
{
uint_least8_t i;
uint_fast32_t key;
key = HwiP_disable();
if (!isInitialized) {
isInitialized = (bool) true;
/* Call each driver's init function */
for (i = 0; i < I2CSlave_count; i++) {
I2CSlave_config[i].fxnTablePtr->initFxn((I2CSlave_Handle)&(I2CSlave_config[i]));
}
}
HwiP_restore(key);
}
/*
* ======== I2CSlave_open ========
*/
I2CSlave_Handle I2CSlave_open(uint_least8_t index, I2CSlave_Params *params)
{
I2CSlave_Handle handle = NULL;
/* Verify driver index and state */
if (isInitialized && (index < I2CSlave_count)) {
/* Use defaults if params are NULL. */
if (params == NULL) {
params = (I2CSlave_Params *) &I2CSlave_defaultParams;
}
/* Get handle for this driver instance */
handle = (I2CSlave_Handle)&(I2CSlave_config[index]);
handle = handle->fxnTablePtr->openFxn(handle, params);
}
return (handle);
}
/*
* ======== I2CSlave_Params_init =======
*/
void I2CSlave_Params_init(I2CSlave_Params *params)
{
*params = I2CSlave_defaultParams;
}
/*
* ======== I2CSlave_read ========
*/
bool I2CSlave_read(I2CSlave_Handle handle, void *buffer, size_t size)
{
return (handle->fxnTablePtr->readFxn(handle, buffer, size));
}
/*
* ======== I2CSlave_write ========
*/
bool I2CSlave_write(I2CSlave_Handle handle, const void *buffer, size_t size)
{
return (handle->fxnTablePtr->writeFxn(handle, buffer, size));
}
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