168 lines
4.8 KiB
C
168 lines
4.8 KiB
C
/*
|
|
ChibiOS - Copyright (C) 2006..2018 Giovanni Di Sirio
|
|
|
|
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_dac_lld.c
|
|
* @brief PLATFORM DAC subsystem low level driver source.
|
|
*
|
|
* @addtogroup DAC
|
|
* @{
|
|
*/
|
|
|
|
#include "hal.h"
|
|
|
|
#if (HAL_USE_DAC == TRUE) || defined(__DOXYGEN__)
|
|
|
|
/*===========================================================================*/
|
|
/* Driver local definitions. */
|
|
/*===========================================================================*/
|
|
|
|
/*===========================================================================*/
|
|
/* Driver exported variables. */
|
|
/*===========================================================================*/
|
|
|
|
/** @brief DAC1 driver identifier.*/
|
|
#if (PLATFORM_DAC_USE_DAC1 == TRUE) || defined(__DOXYGEN__)
|
|
DACDriver DACD1;
|
|
#endif
|
|
|
|
/*===========================================================================*/
|
|
/* Driver local variables. */
|
|
/*===========================================================================*/
|
|
|
|
/*===========================================================================*/
|
|
/* Driver local functions. */
|
|
/*===========================================================================*/
|
|
|
|
/*===========================================================================*/
|
|
/* Driver interrupt handlers. */
|
|
/*===========================================================================*/
|
|
|
|
/*===========================================================================*/
|
|
/* Driver exported functions. */
|
|
/*===========================================================================*/
|
|
|
|
/**
|
|
* @brief Low level DAC driver initialization.
|
|
*
|
|
* @notapi
|
|
*/
|
|
void dac_lld_init(void) {
|
|
|
|
#if PLATFORM_DAC_USE_DAC1 == TRUE
|
|
dacObjectInit(&DACD1);
|
|
#endif
|
|
}
|
|
|
|
/**
|
|
* @brief Configures and activates the DAC peripheral.
|
|
*
|
|
* @param[in] dacp pointer to the @p DACDriver object
|
|
*
|
|
* @notapi
|
|
*/
|
|
void dac_lld_start(DACDriver *dacp) {
|
|
|
|
/* If the driver is in DAC_STOP state then a full initialization is
|
|
required.*/
|
|
if (dacp->state == DAC_STOP) {
|
|
/* Enabling the clock source.*/
|
|
#if PLATFORM_DAC_USE_DAC1 == TRUE
|
|
if (&DACD1 == dacp) {
|
|
|
|
}
|
|
#endif
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @brief Deactivates the DAC peripheral.
|
|
*
|
|
* @param[in] dacp pointer to the @p DACDriver object
|
|
*
|
|
* @notapi
|
|
*/
|
|
void dac_lld_stop(DACDriver *dacp) {
|
|
|
|
/* If in ready state then disables the DAC clock.*/
|
|
if (dacp->state == DAC_READY) {
|
|
|
|
#if PLATFORM_DAC_USE_DAC1 == TRUE
|
|
if (&DACD1 == dacp) {
|
|
|
|
}
|
|
#endif
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @brief Outputs a value directly on a DAC channel.
|
|
*
|
|
* @param[in] dacp pointer to the @p DACDriver object
|
|
* @param[in] channel DAC channel number
|
|
* @param[in] sample value to be output
|
|
*
|
|
* @api
|
|
*/
|
|
void dac_lld_put_channel(DACDriver *dacp,
|
|
dacchannel_t channel,
|
|
dacsample_t sample) {
|
|
|
|
(void)dacp;
|
|
(void)channel;
|
|
(void)sample;
|
|
}
|
|
|
|
/**
|
|
* @brief Starts a DAC conversion.
|
|
* @details Starts an asynchronous conversion operation.
|
|
* @note In @p DAC_DHRM_8BIT_RIGHT mode the parameters passed to the
|
|
* callback are wrong because two samples are packed in a single
|
|
* dacsample_t element. This will not be corrected, do not rely
|
|
* on those parameters.
|
|
* @note In @p DAC_DHRM_8BIT_RIGHT_DUAL mode two samples are treated
|
|
* as a single 16 bits sample and packed into a single dacsample_t
|
|
* element. The num_channels must be set to one in the group
|
|
* conversion configuration structure.
|
|
*
|
|
* @param[in] dacp pointer to the @p DACDriver object
|
|
*
|
|
* @notapi
|
|
*/
|
|
void dac_lld_start_conversion(DACDriver *dacp) {
|
|
|
|
(void)dacp;
|
|
}
|
|
|
|
/**
|
|
* @brief Stops an ongoing conversion.
|
|
* @details This function stops the currently ongoing conversion and returns
|
|
* the driver in the @p DAC_READY state. If there was no conversion
|
|
* being processed then the function does nothing.
|
|
*
|
|
* @param[in] dacp pointer to the @p DACDriver object
|
|
*
|
|
* @iclass
|
|
*/
|
|
void dac_lld_stop_conversion(DACDriver *dacp) {
|
|
|
|
(void)dacp;
|
|
}
|
|
|
|
#endif /* HAL_USE_DAC == TRUE */
|
|
|
|
/** @} */
|