added prescaler for 16 bit pwm in LPC1347 target
Fork of mbed-dev by
targets/hal/TARGET_Silicon_Labs/TARGET_EFM32/mbed_overrides.c
- Committer:
- <>
- Date:
- 2016-09-02
- Revision:
- 144:ef7eb2e8f9f7
- Parent:
- 50:a417edff4437
File content as of revision 144:ef7eb2e8f9f7:
/***************************************************************************//** * @file mbed_overrides.c ******************************************************************************* * @section License * <b>(C) Copyright 2015 Silicon Labs, http://www.silabs.com</b> ******************************************************************************* * * SPDX-License-Identifier: Apache-2.0 * * Licensed under the Apache License, Version 2.0 (the "License"); you may * not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. * ******************************************************************************/ #include "em_chip.h" #include "em_device.h" #include "em_cmu.h" #include "em_emu.h" #include "device_peripherals.h" #include "device.h" #include "em_usart.h" #include "gpio_api.h" gpio_t bc_enable; /* Called before main - implement here if board needs it. * Otherwise, let the application override this if necessary */ void mbed_sdk_init() { CHIP_Init(); #if defined(_SILICON_LABS_32B_PLATFORM_2) EMU_DCDCInit_TypeDef dcdcInit = EMU_DCDCINIT_DEFAULT; EMU_DCDCInit(&dcdcInit); #endif /* Set up the clock sources for this chip */ #if( CORE_CLOCK_SOURCE == HFXO) CMU_ClockSelectSet(cmuClock_HF, cmuSelect_HFXO); SystemHFXOClockSet(HFXO_FREQUENCY); #elif( CORE_CLOCK_SOURCE == HFRCO) CMU_ClockSelectSet(cmuClock_HF, cmuSelect_HFRCO); # if defined _CMU_HFRCOCTRL_BAND_MASK CMU_HFRCOBandSet(HFRCO_FREQUENCY); # elif defined _CMU_HFRCOCTRL_FREQRANGE_MASK CMU_HFRCOFreqSet(HFRCO_FREQUENCY_ENUM); # else # error "Can't set HFRCO frequency" # endif #else # error "Core clock selection not valid (mbed_overrides.c)" #endif CMU_ClockEnable(cmuClock_CORELE, true); #if( LOW_ENERGY_CLOCK_SOURCE == LFXO ) # ifdef _CMU_LFACLKEN0_MASK CMU_ClockSelectSet(cmuClock_LFA, cmuSelect_LFXO); # endif # ifdef _CMU_LFBCLKEN0_MASK /* cmuClock_LFB (to date) only has LEUART peripherals. * This gets set automatically whenever you create serial objects using LEUART */ # endif # ifdef _CMU_LFECLKEN0_MASK CMU_ClockSelectSet(cmuClock_LFE, cmuSelect_LFXO); # endif SystemLFXOClockSet(LFXO_FREQUENCY); #elif( LOW_ENERGY_CLOCK_SOURCE == LFRCO ) # ifdef _CMU_LFACLKEN0_MASK CMU_ClockSelectSet(cmuClock_LFA, cmuSelect_LFRCO); # endif # ifdef _CMU_LFBCLKEN0_MASK //CMU_ClockSelectSet(cmuClock_LFB, cmuSelect_LFRCO); # endif # ifdef _CMU_LFECLKEN0_MASK CMU_ClockSelectSet(cmuClock_LFE, cmuSelect_LFRCO); # endif #elif( LOW_ENERGY_CLOCK_SOURCE == ULFRCO) # ifdef _CMU_LFACLKEN0_MASK CMU_ClockSelectSet(cmuClock_LFA, cmuSelect_ULFRCO); # endif # ifdef _CMU_LFBCLKEN0_MASK CMU_ClockSelectSet(cmuClock_LFB, cmuSelect_ULFRCO); # endif # ifdef _CMU_LFECLKEN0_MASK CMU_ClockSelectSet(cmuClock_LFE, cmuSelect_ULFRCO); # endif #else # error "Low energy clock selection not valid" #endif /* Enable BC line driver to avoid garbage on CDC port */ gpio_init_out_ex(&bc_enable, EFM_BC_EN, 1); }