66 lines
2.3 KiB
C
66 lines
2.3 KiB
C
/******************************************************************//**
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* @file drv_acmp.h
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* @brief ACMP (analog comparator) driver of RT-Thread RTOS for EFM32
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* COPYRIGHT (C) 2011, RT-Thread Development Team
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* @author onelife
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* @version 0.4 beta
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**********************************************************************
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* @section License
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* The license and distribution terms for this file may be found in the file LICENSE in this
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* distribution or at http://www.rt-thread.org/license/LICENSE
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**********************************************************************
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* @section Change Logs
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* Date Author Notes
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* 2011-02-23 onelife Initial creation for EFM32
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*********************************************************************/
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#ifndef __DRV_ACMP_H__
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#define __DRV_ACMP_H__
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/* Includes -------------------------------------------------------------------*/
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#include "hdl_interrupt.h"
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/* Exported types -------------------------------------------------------------*/
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struct efm32_acmp_device_t
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{
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ACMP_TypeDef *acmp_device;
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efm32_irq_hook_t hook;
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};
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struct efm32_acmp_output_t
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{
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rt_uint32_t location;
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rt_bool_t enable;
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rt_bool_t invert;
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};
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struct efm32_acmp_control_t
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{
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ACMP_Init_TypeDef *init;
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ACMP_Channel_TypeDef posInput;
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ACMP_Channel_TypeDef negInput;
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struct efm32_acmp_output_t *output;
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efm32_irq_hook_t hook;
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};
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/* Exported constants ---------------------------------------------------------*/
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/* Exported macro -------------------------------------------------------------*/
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/** Default config for ACMP init structure. */
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#define ACMP_INIT_DEFAULT \
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{ \
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false, /* Full bias current*/ \
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true, /* Half bias current */ \
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0, /* Biasprog current configuration */ \
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true, /* Enable interrupt for falling edge */ \
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true, /* Enable interrupt for rising edge */ \
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acmpWarmTime512, /* Warm-up time must be >10us */ \
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acmpHysteresisLevel0, /* Hysteresis configuration */ \
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0, /* Inactive comparator output value */ \
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false, /* Disable low power mode */ \
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0 /* Vdd reference scaling */ \
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}
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/* Exported functions --------------------------------------------------------- */
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void rt_hw_acmp_init(void);
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#endif /*__DRV_ACMP_H__ */
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