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- /***************************************************************************//**
- * @file
- * @brief Peripheral Reflex System (PRS) peripheral API for EFM32.
- * @author Energy Micro AS
- * @version 1.3.0
- *******************************************************************************
- * @section License
- * <b>(C) Copyright 2010 Energy Micro AS, http://www.energymicro.com</b>
- *******************************************************************************
- *
- * This source code is the property of Energy Micro AS. The source and compiled
- * code may only be used on Energy Micro "EFM32" microcontrollers.
- *
- * This copyright notice may not be removed from the source code nor changed.
- *
- * DISCLAIMER OF WARRANTY/LIMITATION OF REMEDIES: Energy Micro AS has no
- * obligation to support this Software. Energy Micro AS is providing the
- * Software "AS IS", with no express or implied warranties of any kind,
- * including, but not limited to, any implied warranties of merchantability
- * or fitness for any particular purpose or warranties against infringement
- * of any proprietary rights of a third party.
- *
- * Energy Micro AS will not be liable for any consequential, incidental, or
- * special damages, or any other relief, or for any claim by any third party,
- * arising from your use of this Software.
- *
- ******************************************************************************/
- #ifndef __EFM32_PRS_H
- #define __EFM32_PRS_H
- #include "efm32.h"
- #ifdef __cplusplus
- extern "C" {
- #endif
- /***************************************************************************//**
- * @addtogroup EFM32_Library
- * @{
- ******************************************************************************/
- /***************************************************************************//**
- * @addtogroup PRS
- * @{
- ******************************************************************************/
- /*******************************************************************************
- ******************************** ENUMS ************************************
- ******************************************************************************/
- /** Edge detection type. */
- typedef enum
- {
- prsEdgeOff = PRS_CH_CTRL_EDSEL_OFF, /**< Leave signal as is. */
- prsEdgePos = PRS_CH_CTRL_EDSEL_POSEDGE, /**< Generate pules on positive edge. */
- prsEdgeNeg = PRS_CH_CTRL_EDSEL_NEGEDGE, /**< Generate pules on negative edge. */
- prsEdgeBoth = PRS_CH_CTRL_EDSEL_BOTHEDGES /**< Generate pules on both edges. */
- } PRS_Edge_TypeDef;
- /*******************************************************************************
- ***************************** PROTOTYPES **********************************
- ******************************************************************************/
- /***************************************************************************//**
- * @brief
- * Set level control bit for one or more channels.
- *
- * @details
- * The level value for a channel is XORed with both the pulse possible issued
- * by PRS_PulseTrigger() and the PRS input signal selected for the channel(s).
- *
- * @param[in] level
- * Level to use for channels indicated by @p mask. Use logical OR combination
- * of PRS_SWLEVEL_CHnLEVEL defines for channels to set high level, otherwise 0.
- *
- * @param[in] mask
- * Mask indicating which channels to set level for. Use logical OR combination
- * of PRS_SWLEVEL_CHnLEVEL defines.
- ******************************************************************************/
- static __INLINE void PRS_LevelSet(uint32_t level, uint32_t mask)
- {
- PRS->SWLEVEL = (PRS->SWLEVEL & ~mask) | (level & mask);
- }
- /***************************************************************************//**
- * @brief
- * Trigger a high pulse (one HFPERCLK) for one or more channels.
- *
- * @details
- * Setting a bit for a channel causes the bit in the register to remain high
- * for one HFPERCLK cycle. The pulse is XORed with both the corresponding bit
- * in PRS SWLEVEL register and the PRS input signal selected for the
- * channel(s).
- *
- * @param[in] channels
- * Logical ORed combination of channels to trigger a pulse for. Use
- * PRS_SWPULSE_CHnPULSE defines.
- ******************************************************************************/
- static __INLINE void PRS_PulseTrigger(uint32_t channels)
- {
- PRS->SWPULSE = channels & _PRS_SWPULSE_MASK;
- }
- void PRS_SourceSignalSet(unsigned int ch,
- uint32_t source,
- uint32_t signal,
- PRS_Edge_TypeDef edge);
- /** @} (end addtogroup PRS) */
- /** @} (end addtogroup EFM32_Library) */
- #ifdef __cplusplus
- }
- #endif
- #endif /* __EFM32_PRS_H */
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