/***************************************************************************//** | |
* @file em_prs.h | |
* @brief Peripheral Reflex System (PRS) peripheral API | |
* @version 5.1.2 | |
******************************************************************************* | |
* @section License | |
* <b>Copyright 2016 Silicon Laboratories, Inc. http://www.silabs.com</b> | |
******************************************************************************* | |
* | |
* Permission is granted to anyone to use this software for any purpose, | |
* including commercial applications, and to alter it and redistribute it | |
* freely, subject to the following restrictions: | |
* | |
* 1. The origin of this software must not be misrepresented; you must not | |
* claim that you wrote the original software. | |
* 2. Altered source versions must be plainly marked as such, and must not be | |
* misrepresented as being the original software. | |
* 3. This notice may not be removed or altered from any source distribution. | |
* | |
* DISCLAIMER OF WARRANTY/LIMITATION OF REMEDIES: Silicon Labs has no | |
* obligation to support this Software. Silicon Labs 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. | |
* | |
* Silicon Labs 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 EM_PRS_H | |
#define EM_PRS_H | |
#include "em_device.h" | |
#if defined(PRS_COUNT) && (PRS_COUNT > 0) | |
#ifdef __cplusplus | |
extern "C" { | |
#endif | |
/***************************************************************************//** | |
* @addtogroup emlib | |
* @{ | |
******************************************************************************/ | |
/***************************************************************************//** | |
* @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); | |
#if defined( PRS_CH_CTRL_ASYNC ) | |
void PRS_SourceAsyncSignalSet(unsigned int ch, | |
uint32_t source, | |
uint32_t signal); | |
#endif | |
/** @} (end addtogroup PRS) */ | |
/** @} (end addtogroup emlib) */ | |
#ifdef __cplusplus | |
} | |
#endif | |
#endif /* defined(PRS_COUNT) && (PRS_COUNT > 0) */ | |
#endif /* EM_PRS_H */ |