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git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@1273 35acf78f-673a-0410-8e92-d51de3d6d3f4

This commit is contained in:
gdisirio 2009-11-07 10:48:59 +00:00
parent 8957c52648
commit 2487bc05e4
3 changed files with 239 additions and 7 deletions
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119
os/io/platforms/STM32/adc_lld.c Normal file
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@ -0,0 +1,119 @@
/*
ChibiOS/RT - Copyright (C) 2006-2007 Giovanni Di Sirio.
This file is part of ChibiOS/RT.
ChibiOS/RT is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
ChibiOS/RT is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* @file STM32/adc_lld.c
* @brief STM32 ADC subsystem low level driver source
* @addtogroup STM32_ADC
* @{
*/
#include <ch.h>
#include <adc.h>
/*===========================================================================*/
/* Low Level Driver local functions. */
/*===========================================================================*/
/*===========================================================================*/
/* Low Level Driver interrupt handlers. */
/*===========================================================================*/
/*===========================================================================*/
/* Low Level Driver exported functions. */
/*===========================================================================*/
/**
* @brief Low level ADC driver initialization.
*/
void adc_lld_init(void) {
}
/**
* @brief Configures and activates the ADC peripheral.
*
* @param[in] adcp pointer to the @p ADCDriver object
*/
void adc_lld_start(ADCDriver *adcp) {
if (adcp->adc_state == ADC_STOP) {
/* Clock activation.*/
}
/* Configuration.*/
}
/**
* @brief Deactivates the ADC peripheral.
*
* @param[in] adcp pointer to the @p ADCDriver object
*/
void adc_lld_stop(ADCDriver *adcp) {
}
/**
* @brief Starts an ADC conversion.
* @details Starts a conversion operation, there are two kind of conversion
* modes:
* - <b>LINEAR</b>, this mode is activated when the @p callback
* parameter is set to @p NULL, in this mode the buffer is filled
* once and then the conversion stops automatically.
* - <b>CIRCULAR</b>, when a callback function is defined the
* conversion never stops and the buffer is filled circularly.
* During the conversion the callback function is invoked when
* the buffer is 50% filled and when the buffer is 100% filled,
* this way is possible to process the conversion stream in real
* time. This kind of conversion can only be stopped by explicitly
* invoking @p adcStopConversion().
* .
*
* @param[in] adcp pointer to the @p ADCDriver object
* @param[in] grpp pointer to a @p ADCConversionGroup object
* @param[out] samples pointer to the samples buffer
* @param[in] depth buffer depth (matrix rows number). The buffer depth
* must be one or an even number.
* @param[in] callback pointer to the conversion callback function
* @return The operation status.
* @retval FALSE the conversion has been started.
* @retval TRUE the driver is busy, conversion not started.
*
* @note The buffer is organized as a matrix of M*N elements where M is the
* channels number configured into the conversion group and N is the
* buffer depth. The samples are sequentially written into the buffer
* with no gaps.
*/
void adc_lld_start_conversion(ADCDriver *adcp,
ADCConversionGroup *grpp,
void *samples,
size_t depth,
adccallback_t callback) {
}
/**
* @brief Stops an ongoing conversion.
*
* @param[in] adcp pointer to the @p ADCDriver object
*/
void adc_lld_stop_conversion(ADCDriver *adcp) {
}
/** @} */

119
os/io/platforms/STM32/adc_lld.h Normal file
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@ -0,0 +1,119 @@
/*
ChibiOS/RT - Copyright (C) 2006-2007 Giovanni Di Sirio.
This file is part of ChibiOS/RT.
ChibiOS/RT is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
ChibiOS/RT is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* @file STM32/adc_lld.h
* @brief STM32 ADC subsystem low level driver header
* @addtogroup STM32_ADC
* @{
*/
#ifndef _ADC_LLD_H_
#define _ADC_LLD_H_
/*===========================================================================*/
/* Driver pre-compile time settings. */
/*===========================================================================*/
/*===========================================================================*/
/* Driver constants. */
/*===========================================================================*/
/*===========================================================================*/
/* Driver data structures and types. */
/*===========================================================================*/
/**
* @brief ADC sample data type.
*/
typedef uint16_t adcsample_t;
/**
* @brief Channels number in a conversion group.
*/
typedef uint16_t adc_channels_num_t;
/**
* @brief ADC notification callback type.
* @param[in] buffer pointer to the most recent samples data
* @param[in] n number of buffer rows available starting from @p buffer
*/
typedef void (*adccallback_t)(adcsample_t *buffer, size_t n);
/**
* @brief Conversion group configuration structure.
* @details This implementation-dependent structure describes a conversion
* operation.
*/
typedef struct {
/**
* @brief Number of the analog channels belonging to the conversion group.
*/
adc_channels_num_t acg_num_channels;
} ADCConversionGroup;
/**
* @brief Driver configuration structure.
*/
typedef struct {
} ADCConfig;
/**
* @brief Structure representing an ADC driver.
*/
typedef struct {
/**
* @brief Driver state.
*/
adcstate_t adc_state;
/**
* @brief Current configuration data.
*/
const ADCConfig *adc_config;
/**
* @brief Semaphore for completion synchronization.
*/
Semaphore adc_sem;
/* End of the mandatory fields.*/
} ADCDriver;
/*===========================================================================*/
/* External declarations. */
/*===========================================================================*/
#ifdef __cplusplus
extern "C" {
#endif
void adc_lld_init(void);
void adc_lld_start(ADCDriver *adcp);
void adc_lld_stop(ADCDriver *adcp);
void adc_lld_start_conversion(ADCDriver *adcp,
ADCConversionGroup *grpp,
void *samples,
size_t depth,
adccallback_t callback);
void adc_lld_stop_conversion(ADCDriver *adcp);
#ifdef __cplusplus
}
#endif
#endif /* _ADC_LLD_H_ */
/** @} */

8
os/io/templates/adc_lld.h
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@ -49,18 +49,12 @@ typedef uint16_t adcsample_t;
*/
typedef uint16_t adc_channels_num_t;
/**
* @brief Samples buffer depth.
*/
typedef uint16_t adc_buffer_depth_t;
/**
* @brief ADC notification callback type.
* @param[in] buffer pointer to the most recent samples data
* @param[in] n number of buffer rows available starting from @p buffer
*/
typedef void (*adccallback_t)(adcsample_t *buffer,
adc_buffer_depth_t n);
typedef void (*adccallback_t)(adcsample_t *buffer, size_t n);
/**
* @brief Conversion group configuration structure.