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/**
* \file
*
* \brief SAM Temperature Sensor Driver
*
* Copyright (C) 2015 Atmel Corporation. All rights reserved.
*
* \asf_license_start
*
* \page License
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* 2. 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.
*
* 3. The name of Atmel may not be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* 4. This software may only be redistributed and used in connection with an
* Atmel microcontroller product.
*
* THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
* EXPRESSLY AND SPECIFICALLY DISCLAIMED. IN NO EVENT SHALL ATMEL 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.
*
* \asf_license_stop
*
*/
/*
* Support and FAQ: visit <a href="http://www.atmel.com/design-support/">Atmel Support</a>
*/
#include "tsens_callback.h"
struct tsens_module *_tsens_instances;
/** Interrupt handler for the TSENS module. */
void TSENS_Handler(void)
{
struct tsens_module *module = _tsens_instances;
Assert(module);
/* get interrupt flags and mask out enabled callbacks */
uint32_t flags = TSENS->INTFLAG.reg;
/* store TSENS result in job buffer */
uint32_t temp = TSENS->VALUE.reg;
if(temp & 0x00800000) {
temp |= ~TSENS_VALUE_MASK;
}
#if (ERRATA_14476)
*(module->value) = temp * (-1);
#endif
for(uint8_t i = 0; i < TSENS_CALLBACK_NUM; i++)
{
if (flags & ((uint32_t)0x01 << i)) {
/* Clear the INTFLAG anyway */
TSENS->INTFLAG.reg = (uint32_t)0x01 << i;
if(module->callback[i] != NULL) {
module->callback[i]((enum tsens_callback)i);
}
}
}
}
/**
* \brief Registers a callback.
*
* Registers a callback function which is implemented by the user.
*
* \note The callback must be enabled by for the interrupt handler to call it
* when the condition for the callback is met.
*
* \param[in] module Pointer to TSENS software instance struct
* \param[in] callback_func Pointer to callback function
* \param[in] callback_type Callback type given by an enum
*
*/
enum status_code tsens_register_callback(
struct tsens_module *const module,
tsens_callback_t callback_func,
enum tsens_callback callback_type)
{
/* Sanity check arguments */
Assert(module);
Assert(callback_func);
if(callback_type > TSENS_CALLBACK_NUM) {
return STATUS_ERR_INVALID_ARG;
}
/* Register callback function */
module->callback[callback_type] = callback_func;
_tsens_instances = module;
return STATUS_OK;
}
/**
* \brief Unregisters a callback.
*
* Unregisters a callback function which is implemented by the user.
*
* \param[in] module Pointer to TSENS software instance struct
* \param[in] callback_type Callback type given by an enum
*
*/
enum status_code tsens_unregister_callback(
struct tsens_module *const module,
enum tsens_callback callback_type)
{
/* Sanity check arguments */
Assert(module);
if(callback_type > TSENS_CALLBACK_NUM) {
return STATUS_ERR_INVALID_ARG;
}
/* Register callback function */
module->callback[callback_type] = NULL;
return STATUS_OK;
}
/**
* \brief Read result from TSENS.
*
* \param[in] module_inst Pointer to the TSENS software instance struct
* \param[out] result Pointer to store the TSENS result
*
*/
void tsens_read_job(
struct tsens_module *const module_inst,
int32_t *result)
{
Assert(module_inst);
Assert(result);
module_inst->value = result;
if(!(TSENS->CTRLC.reg & TSENS_CTRLC_FREERUN)) {
tsens_start_conversion();
}
}
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