amiro-lld / drivers / PKxxxExxx / v1 / alld_PKxxxExxx.c @ 23ab29c0
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/*
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AMiRo-LLD is a compilation of low-level hardware drivers for the Autonomous Mini Robot (AMiRo) platform.
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Copyright (C) 2016..2019 Thomas Schöpping et al.
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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/**
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* @file alld_PKxxxExxx.c
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* @brief Buzzer function implementations.
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*
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* @addtogroup lld_buzzer
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* @{
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*/
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#include <alld_PKxxxExxx.h> |
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/******************************************************************************/
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/* LOCAL DEFINITIONS */
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/******************************************************************************/
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/******************************************************************************/
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/* EXPORTED VARIABLES */
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/******************************************************************************/
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/******************************************************************************/
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/* LOCAL TYPES */
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/******************************************************************************/
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/******************************************************************************/
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/* LOCAL VARIABLES */
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/******************************************************************************/
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/******************************************************************************/
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/* LOCAL FUNCTIONS */
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/******************************************************************************/
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/******************************************************************************/
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/* EXPORTED FUNCTIONS */
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/******************************************************************************/
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/**
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* @brief Check the configuration of the PWM for the correct frequency.
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* @param[in] pwm The PWM driver to check.
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* @return The return status indicates whether the function call was successful.
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*/
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apalExitStatus_t pkxxxexxx_lld_checkPWMconfiguration(apalPWMDriver_t* pwm) |
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{
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apalDbgAssert(pwm != NULL);
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apalPWMfrequency_t frequency = 0;
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apalPWMperiod_t period = 0;
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apalExitStatus_t status = apalPWMGetFrequency(pwm, &frequency); |
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status |= apalPWMGetPeriod(pwm, &period); |
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if (frequency / period == PKxxxExxx_LLD_FREQUENCY_SPEC) {
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status |= APAL_STATUS_OK; |
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} |
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#if defined(PKxxxExxx_LLD_FREQUENCY_MIN) && !defined(PKxxxExxx_LLD_FREQUENCY_MAX)
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else if (frequency / period >= PKxxxExxx_LLD_FREQUENCY_MIN && |
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frequency / period <= PKxxxExxx_LLD_FREQUENCY_SPEC) {
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status |= APAL_STATUS_WARNING; |
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} |
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#elif !defined(PKxxxExxx_LLD_FREQUENCY_MIN) && defined(PKxxxExxx_LLD_FREQUENCY_MAX)
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else if (frequency / period >= PKxxxExxx_LLD_FREQUENCY_SPEC && |
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frequency / period <= PKxxxExxx_LLD_FREQUENCY_MAX) {
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status |= APAL_STATUS_WARNING; |
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} |
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#elif defined(PKxxxExxx_LLD_FREQUENCY_MIN) && defined(PKxxxExxx_LLD_FREQUENCY_MAX)
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else if (frequency / period >= PKxxxExxx_LLD_FREQUENCY_MIN && |
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frequency / period <= PKxxxExxx_LLD_FREQUENCY_MAX) {
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status |= APAL_STATUS_WARNING; |
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} |
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#endif
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else {
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status |= APAL_STATUS_INVALIDARGUMENTS; |
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} |
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return status;
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} |
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/**
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* @brief Turns the buzzer on or off.
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* @param[in] pwm The PWM driver to use
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* @param[in] channel The PWM channel to enable/disable.
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* @param[in] enable Specifies whether the buzzer shall be turned on (true) or off (false).
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* @return The return status indicates whether the function call was successful.
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*/
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apalExitStatus_t pkxxxexxx_lld_enable(apalPWMDriver_t* pwm, const apalPWMchannel_t channel, const bool enable) |
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{
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apalDbgAssert(pwm != NULL);
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if (enable) {
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apalPWMperiod_t period = 0;
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apalExitStatus_t status = apalPWMGetFrequency(pwm, &period); |
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status |= apalPWMSet(pwm, channel, period/2);
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return status;
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} else {
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return apalPWMSet(pwm, channel, 0); |
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} |
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} |
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/** @} */
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