mirror of https://github.com/ARMmbed/mbed-os.git
117 lines
3.7 KiB
C
117 lines
3.7 KiB
C
/***************************************************************************//**
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* @file mbed_overrides.c
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*******************************************************************************
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* @section License
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* <b>(C) Copyright 2015 Silicon Labs, http://www.silabs.com</b>
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*******************************************************************************
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Licensed under the Apache License, Version 2.0 (the "License"); you may
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* not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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******************************************************************************/
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#include "em_chip.h"
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#include "em_device.h"
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#include "em_cmu.h"
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#include "em_emu.h"
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#include "device_peripherals.h"
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#include "device.h"
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#include "em_usart.h"
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#include "gpio_api.h"
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gpio_t bc_enable;
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/* Called before main - implement here if board needs it.
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* Otherwise, let the application override this if necessary */
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void mbed_sdk_init()
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{
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CHIP_Init();
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#if defined(_SILICON_LABS_32B_PLATFORM_2)
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EMU_DCDCInit_TypeDef dcdcInit = EMU_DCDCINIT_DEFAULT;
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EMU_DCDCInit(&dcdcInit);
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#if defined(DEVICE_RF_2P4GHZ) || defined(DEVICE_RF_SUBGHZ)
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CMU_HFXOInit_TypeDef hfxoInit = CMU_HFXOINIT_WSTK_DEFAULT;
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// Initialize the HFXO using the settings from the WSTK bspconfig.h
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// Note: This configures things like the capacitive tuning CTUNE variable
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// which can vary based on your hardware design.
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CMU_HFXOInit(&hfxoInit);
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#endif
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#endif
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/* Set up the clock sources for this chip */
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#if( CORE_CLOCK_SOURCE == HFXO)
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CMU_ClockSelectSet(cmuClock_HF, cmuSelect_HFXO);
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SystemHFXOClockSet(HFXO_FREQUENCY);
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#elif( CORE_CLOCK_SOURCE == HFRCO)
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CMU_ClockSelectSet(cmuClock_HF, cmuSelect_HFRCO);
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# if defined _CMU_HFRCOCTRL_BAND_MASK
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CMU_HFRCOBandSet(HFRCO_FREQUENCY_ENUM);
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# elif defined _CMU_HFRCOCTRL_FREQRANGE_MASK
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CMU_HFRCOFreqSet(HFRCO_FREQUENCY_ENUM);
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# else
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# error "Can't set HFRCO frequency"
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# endif
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#else
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# error "Core clock selection not valid (mbed_overrides.c)"
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#endif
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CMU_ClockEnable(cmuClock_CORELE, true);
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#if( LOW_ENERGY_CLOCK_SOURCE == LFXO )
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# ifdef _CMU_LFACLKEN0_MASK
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CMU_ClockSelectSet(cmuClock_LFA, cmuSelect_LFXO);
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# endif
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# ifdef _CMU_LFBCLKEN0_MASK
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/* cmuClock_LFB (to date) only has LEUART peripherals.
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* This gets set automatically whenever you create serial objects using LEUART
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*/
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# endif
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# ifdef _CMU_LFECLKEN0_MASK
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CMU_ClockSelectSet(cmuClock_LFE, cmuSelect_LFXO);
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# endif
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SystemLFXOClockSet(LFXO_FREQUENCY);
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#elif( LOW_ENERGY_CLOCK_SOURCE == LFRCO )
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# ifdef _CMU_LFACLKEN0_MASK
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CMU_ClockSelectSet(cmuClock_LFA, cmuSelect_LFRCO);
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# endif
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# ifdef _CMU_LFBCLKEN0_MASK
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//CMU_ClockSelectSet(cmuClock_LFB, cmuSelect_LFRCO);
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# endif
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# ifdef _CMU_LFECLKEN0_MASK
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CMU_ClockSelectSet(cmuClock_LFE, cmuSelect_LFRCO);
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# endif
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#elif( LOW_ENERGY_CLOCK_SOURCE == ULFRCO)
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# ifdef _CMU_LFACLKEN0_MASK
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CMU_ClockSelectSet(cmuClock_LFA, cmuSelect_ULFRCO);
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# endif
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# ifdef _CMU_LFBCLKEN0_MASK
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CMU_ClockSelectSet(cmuClock_LFB, cmuSelect_ULFRCO);
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# endif
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# ifdef _CMU_LFECLKEN0_MASK
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CMU_ClockSelectSet(cmuClock_LFE, cmuSelect_ULFRCO);
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# endif
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#else
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# error "Low energy clock selection not valid"
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#endif
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#if defined(EFM_BC_EN)
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/* Enable BC line driver to avoid garbage on CDC port */
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gpio_init_out_ex(&bc_enable, EFM_BC_EN, 1);
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#endif
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}
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