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/*
ChibiOS - Copyright (C) 2006..2019 Giovanni Di Sirio
Copyright (C) 2019 Fabien Poussin (fabien.poussin (at) google's mail)
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
/**
* @file hal_opamp.c
* @brief OPAMP Driver code.
*
* @addtogroup OPAMP
* @{
*/
#include "hal_opamp.h"
#if HAL_USE_OPAMP || defined(__DOXYGEN__)
/*===========================================================================*/
/* Driver local definitions. */
/*===========================================================================*/
/*===========================================================================*/
/* Driver exported variables. */
/*===========================================================================*/
/*===========================================================================*/
/* Driver local variables and types. */
/*===========================================================================*/
/*===========================================================================*/
/* Driver local functions. */
/*===========================================================================*/
/*===========================================================================*/
/* Driver exported functions. */
/*===========================================================================*/
/**
* @brief OPAMP Driver initialization.
* @note This function is implicitly invoked by @p halInit(), there is
* no need to explicitly initialize the driver.
*
* @init
*/
void opampInit(void) {
opamp_lld_init();
}
/**
* @brief Initializes the standard part of a @p OPAMPDriver structure.
*
* @param[out] opampp pointer to the @p OPAMPDriver object
*
* @init
*/
void opampObjectInit(OPAMPDriver *opampp) {
opampp->state = OPAMP_STOP;
opampp->config = NULL;
}
/**
* @brief Configures and activates the OPAMP peripheral.
*
* @param[in] opampp pointer to the @p OPAMPDriver object
* @param[in] config pointer to the @p OPAMPConfig object
*
* @api
*/
void opampStart(OPAMPDriver *opampp, const OPAMPConfig *config) {
osalDbgCheck((opampp != NULL) && (config != NULL));
osalSysLock();
osalDbgAssert((opampp->state == OPAMP_STOP) || (opampp->state == OPAMP_ACTIVE),
"invalid state");
opampp->config = config;
opamp_lld_start(opampp);
opampp->state = OPAMP_ACTIVE;
osalSysUnlock();
}
/**
* @brief Deactivates the OPAMP peripheral.
*
* @param[in] opampp pointer to the @p OPAMPDriver object
*
* @api
*/
void opampStop(OPAMPDriver *opampp) {
osalDbgCheck(opampp != NULL);
osalSysLock();
osalDbgAssert((opampp->state == OPAMP_STOP) || (opampp->state == OPAMP_ACTIVE),
"invalid state");
opamp_lld_stop(opampp);
opampp->state = OPAMP_STOP;
osalSysUnlock();
}
/**
* @brief Activates the opamp.
*
* @param[in] opampp pointer to the @p OPAMPDriver object
*
* @api
*/
void opampEnable(OPAMPDriver *opampp) {
osalDbgCheck(opampp != NULL);
osalSysLock();
osalDbgAssert(opampp->state == OPAMP_ACTIVE, "invalid state");
opamp_lld_enable(opampp);
opampp->state = OPAMP_ACTIVE;
osalSysUnlock();
}
/**
* @brief Deactivates the opamp.
*
* @param[in] opampp pointer to the @p OPAMPDriver object
*
* @api
*/
void opampDisable(OPAMPDriver *opampp) {
osalDbgCheck(opampp != NULL);
osalSysLock();
osalDbgAssert((opampp->state == OPAMP_ACTIVE),
"invalid state");
opamp_lld_disable(opampp);
opampp->state = OPAMP_ACTIVE;
osalSysUnlock();
}
#endif /* HAL_USE_OPAMP */
/** @} */
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