mirror of
https://github.com/jialexd/sdk-ameba-v4.0c_180328.git
synced 2024-11-24 23:14:18 +00:00
96 lines
2.8 KiB
C
Executable file
96 lines
2.8 KiB
C
Executable file
/** mbed Microcontroller Library
|
|
******************************************************************************
|
|
* @file analogout_api.h
|
|
* @author
|
|
* @version V1.0.0
|
|
* @brief This file provides following mbed Analog_out API
|
|
******************************************************************************
|
|
* @attention
|
|
*
|
|
* Copyright (c) 2006-2013 ARM Limited
|
|
*
|
|
* 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.
|
|
*/
|
|
#ifndef MBED_ANALOGOUT_API_H
|
|
#define MBED_ANALOGOUT_API_H
|
|
|
|
#include "device.h"
|
|
|
|
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
/** @addtogroup analog_out ANALOG_OUT
|
|
* @ingroup hal
|
|
* @brief analog_out functions
|
|
* @{
|
|
*/
|
|
|
|
#if CONFIG_PLATFORM_8195A
|
|
///@name Ameba1 Only
|
|
///@{
|
|
|
|
typedef struct dac_s dac_t;
|
|
|
|
|
|
/**
|
|
* @brief Initialize DAC
|
|
* @param obj: dac object define in application software.
|
|
* @param pin: dac PinName according to pinmux spec.
|
|
* @retval none
|
|
*/
|
|
void analogout_init(dac_t *obj, PinName pin);
|
|
|
|
/**
|
|
* @brief Free DAC
|
|
* @param obj: dac object define in application software.
|
|
* @retval none
|
|
*/
|
|
void analogout_free(dac_t *obj);
|
|
|
|
/**
|
|
* @brief Execute analog output
|
|
* @para obj: dac object define in application software.
|
|
* @para value: analog ratio value, should be transfered to register value.
|
|
* @retval none
|
|
* @note This function is mainly to execute analog output and the value is a ratio.
|
|
* The upper/lower bound of DAC register input value is defined by
|
|
* DAC_XXXXX_FULL_SCALE. The parameter "value" of this function should be
|
|
* transfered to register value.
|
|
*/
|
|
void analogout_write(dac_t *obj, float value);
|
|
|
|
/**
|
|
* @brief Execute analog output 16bit
|
|
* @para obj: dac object define in application software.
|
|
* @para value: analog ratio value, should be transfered to register value.
|
|
* @retval none
|
|
* @note The register value of DAC input is a format of 2's complement.
|
|
* The most maximum value of positive value drives DAC to output a voltage about 3.3V.
|
|
* The most mimimum value of negative value drives DAC to output a voltage about 0.
|
|
* And the middle value of 0x000 will drive DAC to output a voltage of half of max voltage.
|
|
*/
|
|
void analogout_write_u16(dac_t *obj, uint16_t value);
|
|
|
|
///@}
|
|
#endif //CONFIG_PLATFORM_8195A
|
|
|
|
/**@}*/
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif//MBED_ANALOGOUT_API_H
|