| 1 |
595 |
jeremybenn |
/**************************************************************************//**
|
| 2 |
|
|
* @file
|
| 3 |
|
|
* @brief Chip initialization, SW workarounds for chip errata issues
|
| 4 |
|
|
* @author Energy Micro AS
|
| 5 |
|
|
* @version 1.1.1
|
| 6 |
|
|
******************************************************************************
|
| 7 |
|
|
* @section License
|
| 8 |
|
|
* <b>(C) Copyright 2009 Energy Micro AS, http://www.energymicro.com</b>
|
| 9 |
|
|
******************************************************************************
|
| 10 |
|
|
*
|
| 11 |
|
|
* This source code is the property of Energy Micro AS. The source and compiled
|
| 12 |
|
|
* code may only be used on Energy Micro "EFM32" microcontrollers.
|
| 13 |
|
|
*
|
| 14 |
|
|
* This copyright notice may not be removed from the source code nor changed.
|
| 15 |
|
|
*
|
| 16 |
|
|
* DISCLAIMER OF WARRANTY/LIMITATION OF REMEDIES: Energy Micro AS has no
|
| 17 |
|
|
* obligation to support this Software. Energy Micro AS is providing the
|
| 18 |
|
|
* Software "AS IS", with no express or implied warranties of any kind,
|
| 19 |
|
|
* including, but not limited to, any implied warranties of merchantability
|
| 20 |
|
|
* or fitness for any particular purpose or warranties against infringement
|
| 21 |
|
|
* of any proprietary rights of a third party.
|
| 22 |
|
|
*
|
| 23 |
|
|
* Energy Micro AS will not be liable for any consequential, incidental, or
|
| 24 |
|
|
* special damages, or any other relief, or for any claim by any third party,
|
| 25 |
|
|
* arising from your use of this Software.
|
| 26 |
|
|
*
|
| 27 |
|
|
*****************************************************************************/
|
| 28 |
|
|
|
| 29 |
|
|
#ifndef __CHIP_H
|
| 30 |
|
|
#define __CHIP_H
|
| 31 |
|
|
|
| 32 |
|
|
#include <stdint.h>
|
| 33 |
|
|
|
| 34 |
|
|
/**************************************************************************//**
|
| 35 |
|
|
* @brief Chip errata workarounds
|
| 36 |
|
|
*****************************************************************************/
|
| 37 |
|
|
static inline void CHIP_init(void)
|
| 38 |
|
|
{
|
| 39 |
|
|
uint32_t rev;
|
| 40 |
|
|
volatile uint32_t *reg;
|
| 41 |
|
|
|
| 42 |
|
|
rev = *(volatile uint32_t *)(0x0FE081FC);
|
| 43 |
|
|
/* Engineering Sample calibration setup */
|
| 44 |
|
|
if ((rev >> 24) == 0)
|
| 45 |
|
|
{
|
| 46 |
|
|
reg = (volatile uint32_t *) 0x400CA00C;
|
| 47 |
|
|
*reg &= ~(0x70UL);
|
| 48 |
|
|
/* DREG */
|
| 49 |
|
|
reg = (volatile uint32_t *) 0x400C6020;
|
| 50 |
|
|
*reg &= ~(0xE0000000UL);
|
| 51 |
|
|
*reg |= ~(7 << 25);
|
| 52 |
|
|
}
|
| 53 |
|
|
if ((rev >> 24) <= 1)
|
| 54 |
|
|
{
|
| 55 |
|
|
/* DREG */
|
| 56 |
|
|
reg = (volatile uint32_t *) 0x400C6020;
|
| 57 |
|
|
*reg &= ~(0x00001F80UL);
|
| 58 |
|
|
/* Update CMU reset values */
|
| 59 |
|
|
reg = (volatile uint32_t *) 0x400C8040;
|
| 60 |
|
|
*reg = 0;
|
| 61 |
|
|
reg = (volatile uint32_t *) 0x400C8044;
|
| 62 |
|
|
*reg = 0;
|
| 63 |
|
|
reg = (volatile uint32_t *) 0x400C8058;
|
| 64 |
|
|
*reg = 0;
|
| 65 |
|
|
reg = (volatile uint32_t *) 0x400C8060;
|
| 66 |
|
|
*reg = 0;
|
| 67 |
|
|
reg = (volatile uint32_t *) 0x400C8078;
|
| 68 |
|
|
*reg = 0;
|
| 69 |
|
|
}
|
| 70 |
|
|
}
|
| 71 |
|
|
|
| 72 |
|
|
#endif
|
