/***************************************************************************//** | |
* @file em_chip.h | |
* @brief Chip Initialization 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_CHIP_H | |
#define EM_CHIP_H | |
#include "em_device.h" | |
#include "em_system.h" | |
#include "em_gpio.h" | |
#include "em_bus.h" | |
#ifdef __cplusplus | |
extern "C" { | |
#endif | |
/***************************************************************************//** | |
* @addtogroup emlib | |
* @{ | |
******************************************************************************/ | |
/***************************************************************************//** | |
* @addtogroup CHIP | |
* @brief Chip errata workarounds initialization API | |
* @details | |
* API to initialize chip for errata workarounds. | |
* @{ | |
******************************************************************************/ | |
/**************************************************************************//** | |
* @brief | |
* Chip initialization routine for revision errata workarounds. This function | |
* must be called immediately in main(). | |
* | |
* @note | |
* This function must be called immediately in main(). | |
* | |
* This init function will configure the device to a state where it is | |
* as similar as later revisions as possible, to improve software compatibility | |
* with newer parts. See the device specific errata for details. | |
*****************************************************************************/ | |
__STATIC_INLINE void CHIP_Init(void) | |
{ | |
#if defined(_SILICON_LABS_32B_SERIES_0) && defined(_EFM32_GECKO_FAMILY) | |
uint32_t rev; | |
SYSTEM_ChipRevision_TypeDef chipRev; | |
volatile uint32_t *reg; | |
rev = *(volatile uint32_t *)(0x0FE081FC); | |
/* Engineering Sample calibration setup */ | |
if ((rev >> 24) == 0) | |
{ | |
reg = (volatile uint32_t *)0x400CA00C; | |
*reg &= ~(0x70UL); | |
/* DREG */ | |
reg = (volatile uint32_t *)0x400C6020; | |
*reg &= ~(0xE0000000UL); | |
*reg |= ~(7UL << 25); | |
} | |
if ((rev >> 24) <= 3) | |
{ | |
/* DREG */ | |
reg = (volatile uint32_t *)0x400C6020; | |
*reg &= ~(0x00001F80UL); | |
/* Update CMU reset values */ | |
reg = (volatile uint32_t *)0x400C8040; | |
*reg = 0; | |
reg = (volatile uint32_t *)0x400C8044; | |
*reg = 0; | |
reg = (volatile uint32_t *)0x400C8058; | |
*reg = 0; | |
reg = (volatile uint32_t *)0x400C8060; | |
*reg = 0; | |
reg = (volatile uint32_t *)0x400C8078; | |
*reg = 0; | |
} | |
SYSTEM_ChipRevisionGet(&chipRev); | |
if (chipRev.major == 0x01) | |
{ | |
/* Rev A errata handling for EM2/3. Must enable DMA clock in order for EM2/3 */ | |
/* to work. This will be fixed in later chip revisions, so only do for rev A. */ | |
if (chipRev.minor == 00) | |
{ | |
reg = (volatile uint32_t *)0x400C8040; | |
*reg |= 0x2; | |
} | |
/* Rev A+B errata handling for I2C when using EM2/3. USART0 clock must be enabled */ | |
/* after waking up from EM2/EM3 in order for I2C to work. This will be fixed in */ | |
/* later chip revisions, so only do for rev A+B. */ | |
if (chipRev.minor <= 0x01) | |
{ | |
reg = (volatile uint32_t *)0x400C8044; | |
*reg |= 0x1; | |
} | |
} | |
/* Ensure correct ADC/DAC calibration value */ | |
rev = *(volatile uint32_t *)0x0FE081F0; | |
if (rev < 0x4C8ABA00) | |
{ | |
uint32_t cal; | |
/* Enable ADC/DAC clocks */ | |
reg = (volatile uint32_t *)0x400C8044UL; | |
*reg |= (1 << 14 | 1 << 11); | |
/* Retrive calibration values */ | |
cal = ((*(volatile uint32_t *)(0x0FE081B4UL) & 0x00007F00UL) >> | |
8) << 24; | |
cal |= ((*(volatile uint32_t *)(0x0FE081B4UL) & 0x0000007FUL) >> | |
0) << 16; | |
cal |= ((*(volatile uint32_t *)(0x0FE081B4UL) & 0x00007F00UL) >> | |
8) << 8; | |
cal |= ((*(volatile uint32_t *)(0x0FE081B4UL) & 0x0000007FUL) >> | |
0) << 0; | |
/* ADC0->CAL = 1.25 reference */ | |
reg = (volatile uint32_t *)0x40002034UL; | |
*reg = cal; | |
/* DAC0->CAL = 1.25 reference */ | |
reg = (volatile uint32_t *)(0x4000402CUL); | |
cal = *(volatile uint32_t *)0x0FE081C8UL; | |
*reg = cal; | |
/* Turn off ADC/DAC clocks */ | |
reg = (volatile uint32_t *)0x400C8044UL; | |
*reg &= ~(1 << 14 | 1 << 11); | |
} | |
#endif | |
#if defined(_SILICON_LABS_32B_SERIES_0) && defined(_EFM32_GIANT_FAMILY) | |
/****************************/ | |
/* Fix for errata CMU_E113. */ | |
uint8_t prodRev; | |
SYSTEM_ChipRevision_TypeDef chipRev; | |
prodRev = SYSTEM_GetProdRev(); | |
SYSTEM_ChipRevisionGet(&chipRev); | |
if ((prodRev >= 16) && (chipRev.minor >= 3)) | |
{ | |
/* This fixes an issue with the LFXO on high temperatures. */ | |
*(volatile uint32_t*)0x400C80C0 = | |
( *(volatile uint32_t*)0x400C80C0 & ~(1 << 6) ) | (1 << 4); | |
} | |
#endif | |
#if defined(_SILICON_LABS_32B_SERIES_0) && defined(_EFM32_HAPPY_FAMILY) | |
uint8_t prodRev; | |
prodRev = SYSTEM_GetProdRev(); | |
if (prodRev <= 129) | |
{ | |
/* This fixes a mistaken internal connection between PC0 and PC4 */ | |
/* This disables an internal pulldown on PC4 */ | |
*(volatile uint32_t*)(0x400C6018) = (1 << 26) | (5 << 0); | |
/* This disables an internal LDO test signal driving PC4 */ | |
*(volatile uint32_t*)(0x400C80E4) &= ~(1 << 24); | |
} | |
#endif | |
#if defined(_SILICON_LABS_GECKO_INTERNAL_SDID_80) | |
/**************************** | |
* Fixes for errata GPIO_E201 (slewrate) and | |
* HFXO high temperature oscillator startup robustness fix */ | |
uint32_t port; | |
uint32_t clkEn; | |
uint8_t prodRev; | |
const uint32_t setVal = (0x5 << _GPIO_P_CTRL_SLEWRATEALT_SHIFT) | |
| (0x5 << _GPIO_P_CTRL_SLEWRATE_SHIFT); | |
const uint32_t resetVal = _GPIO_P_CTRL_RESETVALUE | |
& ~(_GPIO_P_CTRL_SLEWRATE_MASK | |
| _GPIO_P_CTRL_SLEWRATEALT_MASK); | |
prodRev = SYSTEM_GetProdRev(); | |
SYSTEM_ChipRevision_TypeDef chipRev; | |
SYSTEM_ChipRevisionGet(&chipRev); | |
/* This errata is fixed in hardware from PRODREV 0x8F. */ | |
if (prodRev < 0x8F) | |
{ | |
/* Fixes for errata GPIO_E201 (slewrate) */ | |
/* Save HFBUSCLK enable state and enable GPIO clock. */ | |
clkEn = CMU->HFBUSCLKEN0; | |
CMU->HFBUSCLKEN0 = clkEn | CMU_HFBUSCLKEN0_GPIO; | |
/* Update slewrate */ | |
for(port = 0; port <= GPIO_PORT_MAX; port++) | |
{ | |
GPIO->P[port].CTRL = setVal | resetVal; | |
} | |
/* Restore HFBUSCLK enable state. */ | |
CMU->HFBUSCLKEN0 = clkEn; | |
} | |
/* This errata is fixed in hardware from PRODREV 0x90. */ | |
if (prodRev < 0x90) | |
{ | |
/* HFXO high temperature oscillator startup robustness fix */ | |
CMU->HFXOSTARTUPCTRL = | |
(CMU->HFXOSTARTUPCTRL & ~_CMU_HFXOSTARTUPCTRL_IBTRIMXOCORE_MASK) | |
| (0x20 << _CMU_HFXOSTARTUPCTRL_IBTRIMXOCORE_SHIFT); | |
} | |
if (chipRev.major == 0x01) | |
{ | |
/* Fix for errata EMU_E210 - Potential Power-Down When Entering EM2 */ | |
*(volatile uint32_t *)(EMU_BASE + 0x164) |= 0x4; | |
} | |
#endif | |
#if defined(_SILICON_LABS_GECKO_INTERNAL_SDID_84) | |
uint8_t prodRev = SYSTEM_GetProdRev(); | |
/* EM2 current fixes for early samples */ | |
if (prodRev == 0) | |
{ | |
*(volatile uint32_t *)(EMU_BASE + 0x190) = 0x0000ADE8UL; | |
*(volatile uint32_t *)(EMU_BASE + 0x198) |= (0x1 << 2); | |
*(volatile uint32_t *)(EMU_BASE + 0x190) = 0x0; | |
} | |
if (prodRev < 2) | |
{ | |
*(volatile uint32_t *)(EMU_BASE + 0x164) |= (0x1 << 13); | |
} | |
/* Set optimal LFRCOCTRL VREFUPDATE and enable duty cycling of vref */ | |
CMU->LFRCOCTRL = (CMU->LFRCOCTRL & ~_CMU_LFRCOCTRL_VREFUPDATE_MASK) | |
| CMU_LFRCOCTRL_VREFUPDATE_64CYCLES | |
| CMU_LFRCOCTRL_ENVREF; | |
#endif | |
#if defined(_EFR_DEVICE) && (_SILICON_LABS_GECKO_INTERNAL_SDID >= 84) | |
MSC->CTRL |= 0x1 << 8; | |
#endif | |
} | |
/** @} (end addtogroup CHIP) */ | |
/** @} (end addtogroup emlib) */ | |
#ifdef __cplusplus | |
} | |
#endif | |
#endif /* EM_CHIP_H */ |