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73 lines
2.5 KiB
C
73 lines
2.5 KiB
C
/**************************************************************************//**
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* @file
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* @brief Chip initialization, SW workarounds for chip errata issues
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* @author Energy Micro AS
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* @version 1.1.1
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******************************************************************************
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* @section License
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* <b>(C) Copyright 2009 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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#ifndef __CHIP_H
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#define __CHIP_H
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#include <stdint.h>
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/**************************************************************************//**
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* @brief Chip errata workarounds
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*****************************************************************************/
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static inline void CHIP_init(void)
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{
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uint32_t rev;
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volatile uint32_t *reg;
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rev = *(volatile uint32_t *)(0x0FE081FC);
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/* Engineering Sample calibration setup */
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if ((rev >> 24) == 0)
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{
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reg = (volatile uint32_t *) 0x400CA00C;
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*reg &= ~(0x70UL);
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/* DREG */
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reg = (volatile uint32_t *) 0x400C6020;
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*reg &= ~(0xE0000000UL);
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*reg |= ~(7 << 25);
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}
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if ((rev >> 24) <= 1)
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{
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/* DREG */
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reg = (volatile uint32_t *) 0x400C6020;
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*reg &= ~(0x00001F80UL);
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/* Update CMU reset values */
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reg = (volatile uint32_t *) 0x400C8040;
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*reg = 0;
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reg = (volatile uint32_t *) 0x400C8044;
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*reg = 0;
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reg = (volatile uint32_t *) 0x400C8058;
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*reg = 0;
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reg = (volatile uint32_t *) 0x400C8060;
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*reg = 0;
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reg = (volatile uint32_t *) 0x400C8078;
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*reg = 0;
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}
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}
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#endif
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