107 lines
3.8 KiB
C
107 lines
3.8 KiB
C
/***************************************************************************//**
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* @file
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* @brief System Peripheral API for EFM32
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* @author Energy Micro AS
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* @version 2.3.2
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*******************************************************************************
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* @section License
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* <b>(C) Copyright 2010 Energy Micro AS, http://www.energymicro.com</b>
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*******************************************************************************
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*
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* This source code is the property of Energy Micro AS. The source and compiled
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* code may only be used on Energy Micro "EFM32" microcontrollers.
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*
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* This copyright notice may not be removed from the source code nor changed.
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*
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* DISCLAIMER OF WARRANTY/LIMITATION OF REMEDIES: Energy Micro AS has no
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* obligation to support this Software. Energy Micro AS is providing the
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* Software "AS IS", with no express or implied warranties of any kind,
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* including, but not limited to, any implied warranties of merchantability
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* or fitness for any particular purpose or warranties against infringement
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* of any proprietary rights of a third party.
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*
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* Energy Micro AS will not be liable for any consequential, incidental, or
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* special damages, or any other relief, or for any claim by any third party,
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* arising from your use of this Software.
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*
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******************************************************************************/
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#include "efm32.h"
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#include "efm32_system.h"
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#include "efm32_assert.h"
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/***************************************************************************//**
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* @addtogroup EFM32_Library
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* @{
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******************************************************************************/
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/***************************************************************************//**
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* @addtogroup SYSTEM
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* @brief System Peripheral API for EFM32
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* @{
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******************************************************************************/
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/*******************************************************************************
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************************** GLOBAL FUNCTIONS *******************************
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******************************************************************************/
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/***************************************************************************//**
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* @brief
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* Get chip major/minor revision.
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*
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* @param[out] rev
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* Location to place chip revision info.
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******************************************************************************/
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void SYSTEM_ChipRevisionGet(SYSTEM_ChipRevision_TypeDef *rev)
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{
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uint8_t tmp;
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EFM_ASSERT(rev);
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rev->major = (ROMTABLE->PID0 & _ROMTABLE_PID0_REVMAJOR_MASK) >> _ROMTABLE_PID0_REVMAJOR_SHIFT;
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tmp = (ROMTABLE->PID2 & _ROMTABLE_PID2_REVMINORMSB_MASK);
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tmp |= ((ROMTABLE->PID3 & _ROMTABLE_PID3_REVMINORLSB_MASK) >> _ROMTABLE_PID3_REVMINORLSB_SHIFT);
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rev->minor = tmp;
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}
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/***************************************************************************//**
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* @brief
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* Get factory calibration value for a given peripheral register.
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*
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* @param[in] regAddress
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* Address of register to get a calibration value for.
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*
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* @return
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* Calibration value for the requested register.
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******************************************************************************/
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uint32_t SYSTEM_GetCalibrationValue(volatile uint32_t *regAddress)
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{
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int regCount;
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CALIBRATE_TypeDef *p;
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regCount = 1;
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p = CALIBRATE;
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for (;; )
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{
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if ((regCount > CALIBRATE_MAX_REGISTERS) ||
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(p->VALUE == 0xFFFFFFFF))
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{
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EFM_ASSERT(false);
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return 0; /* End of device calibration table reached. */
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}
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if (p->ADDRESS == (uint32_t)regAddress)
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{
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return p->VALUE; /* Calibration value found ! */
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}
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p++;
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regCount++;
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}
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}
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/** @} (end addtogroup SYSTEM) */
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/** @} (end addtogroup EFM32_Library) */
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