Fawwaz Nadzmy / mbed-STM

mbed library sources. Supersedes mbed-src.

Fork of mbed-dev by mbed official

targets/TARGET_Silicon_Labs/TARGET_EFM32/mbed_overrides.c@153:9398a535854b, 2016-12-22 (annotated)

Committer:
fwndz
Date:
Thu Dec 22 05:12:40 2016 +0000
Revision:
153:9398a535854b
Parent:
149:156823d33999 
device target maximize

Who changed what in which revision?

UserRevisionLine numberNew contents of line
<> 144:ef7eb2e8f9f7 1 /***************************************************************************//**
<> 144:ef7eb2e8f9f7 2 * @file mbed_overrides.c
<> 144:ef7eb2e8f9f7 3 *******************************************************************************
<> 144:ef7eb2e8f9f7 4 * @section License
<> 144:ef7eb2e8f9f7 5 * <b>(C) Copyright 2015 Silicon Labs, http://www.silabs.com</b>
<> 144:ef7eb2e8f9f7 6 *******************************************************************************
<> 144:ef7eb2e8f9f7 7 *
<> 144:ef7eb2e8f9f7 8 * SPDX-License-Identifier: Apache-2.0
<> 144:ef7eb2e8f9f7 9 *
<> 144:ef7eb2e8f9f7 10 * Licensed under the Apache License, Version 2.0 (the "License"); you may
<> 144:ef7eb2e8f9f7 11 * not use this file except in compliance with the License.
<> 144:ef7eb2e8f9f7 12 * You may obtain a copy of the License at
<> 144:ef7eb2e8f9f7 13 *
<> 144:ef7eb2e8f9f7 14 * http://www.apache.org/licenses/LICENSE-2.0
<> 144:ef7eb2e8f9f7 15 *
<> 144:ef7eb2e8f9f7 16 * Unless required by applicable law or agreed to in writing, software
<> 144:ef7eb2e8f9f7 17 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
<> 144:ef7eb2e8f9f7 18 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
<> 144:ef7eb2e8f9f7 19 * See the License for the specific language governing permissions and
<> 144:ef7eb2e8f9f7 20 * limitations under the License.
<> 144:ef7eb2e8f9f7 21 *
<> 144:ef7eb2e8f9f7 22 ******************************************************************************/
<> 144:ef7eb2e8f9f7 23
<> 144:ef7eb2e8f9f7 24 #include "em_chip.h"
<> 144:ef7eb2e8f9f7 25 #include "em_device.h"
<> 144:ef7eb2e8f9f7 26 #include "em_cmu.h"
<> 144:ef7eb2e8f9f7 27 #include "em_emu.h"
<> 144:ef7eb2e8f9f7 28 #include "device_peripherals.h"
<> 144:ef7eb2e8f9f7 29 #include "device.h"
<> 144:ef7eb2e8f9f7 30 #include "em_usart.h"
<> 144:ef7eb2e8f9f7 31 #include "gpio_api.h"
<> 144:ef7eb2e8f9f7 32
<> 144:ef7eb2e8f9f7 33 gpio_t bc_enable;
<> 144:ef7eb2e8f9f7 34
<> 144:ef7eb2e8f9f7 35 /* Called before main - implement here if board needs it.
<> 144:ef7eb2e8f9f7 36 * Otherwise, let the application override this if necessary */
<> 144:ef7eb2e8f9f7 37 void mbed_sdk_init()
<> 144:ef7eb2e8f9f7 38 {
<> 144:ef7eb2e8f9f7 39 CHIP_Init();
<> 144:ef7eb2e8f9f7 40
<> 144:ef7eb2e8f9f7 41 #if defined(_SILICON_LABS_32B_PLATFORM_2)
<> 144:ef7eb2e8f9f7 42 EMU_DCDCInit_TypeDef dcdcInit = EMU_DCDCINIT_DEFAULT;
<> 144:ef7eb2e8f9f7 43 EMU_DCDCInit(&dcdcInit);
<> 144:ef7eb2e8f9f7 44 #endif
<> 144:ef7eb2e8f9f7 45
<> 144:ef7eb2e8f9f7 46 /* Set up the clock sources for this chip */
<> 144:ef7eb2e8f9f7 47 #if( CORE_CLOCK_SOURCE == HFXO)
<> 144:ef7eb2e8f9f7 48 CMU_ClockSelectSet(cmuClock_HF, cmuSelect_HFXO);
<> 144:ef7eb2e8f9f7 49 SystemHFXOClockSet(HFXO_FREQUENCY);
<> 144:ef7eb2e8f9f7 50 #elif( CORE_CLOCK_SOURCE == HFRCO)
<> 144:ef7eb2e8f9f7 51 CMU_ClockSelectSet(cmuClock_HF, cmuSelect_HFRCO);
<> 144:ef7eb2e8f9f7 52 # if defined _CMU_HFRCOCTRL_BAND_MASK
<> 144:ef7eb2e8f9f7 53 CMU_HFRCOBandSet(HFRCO_FREQUENCY);
<> 144:ef7eb2e8f9f7 54 # elif defined _CMU_HFRCOCTRL_FREQRANGE_MASK
<> 144:ef7eb2e8f9f7 55 CMU_HFRCOFreqSet(HFRCO_FREQUENCY_ENUM);
<> 144:ef7eb2e8f9f7 56 # else
<> 144:ef7eb2e8f9f7 57 # error "Can't set HFRCO frequency"
<> 144:ef7eb2e8f9f7 58 # endif
<> 144:ef7eb2e8f9f7 59 #else
<> 144:ef7eb2e8f9f7 60 # error "Core clock selection not valid (mbed_overrides.c)"
<> 144:ef7eb2e8f9f7 61 #endif
<> 144:ef7eb2e8f9f7 62
<> 144:ef7eb2e8f9f7 63 CMU_ClockEnable(cmuClock_CORELE, true);
<> 144:ef7eb2e8f9f7 64
<> 144:ef7eb2e8f9f7 65 #if( LOW_ENERGY_CLOCK_SOURCE == LFXO )
<> 144:ef7eb2e8f9f7 66 # ifdef _CMU_LFACLKEN0_MASK
<> 144:ef7eb2e8f9f7 67 CMU_ClockSelectSet(cmuClock_LFA, cmuSelect_LFXO);
<> 144:ef7eb2e8f9f7 68 # endif
<> 144:ef7eb2e8f9f7 69 # ifdef _CMU_LFBCLKEN0_MASK
<> 144:ef7eb2e8f9f7 70 /* cmuClock_LFB (to date) only has LEUART peripherals.
<> 144:ef7eb2e8f9f7 71 * This gets set automatically whenever you create serial objects using LEUART
<> 144:ef7eb2e8f9f7 72 */
<> 144:ef7eb2e8f9f7 73 # endif
<> 144:ef7eb2e8f9f7 74 # ifdef _CMU_LFECLKEN0_MASK
<> 144:ef7eb2e8f9f7 75 CMU_ClockSelectSet(cmuClock_LFE, cmuSelect_LFXO);
<> 144:ef7eb2e8f9f7 76 # endif
<> 144:ef7eb2e8f9f7 77 SystemLFXOClockSet(LFXO_FREQUENCY);
<> 144:ef7eb2e8f9f7 78
<> 144:ef7eb2e8f9f7 79 #elif( LOW_ENERGY_CLOCK_SOURCE == LFRCO )
<> 144:ef7eb2e8f9f7 80 # ifdef _CMU_LFACLKEN0_MASK
<> 144:ef7eb2e8f9f7 81 CMU_ClockSelectSet(cmuClock_LFA, cmuSelect_LFRCO);
<> 144:ef7eb2e8f9f7 82 # endif
<> 144:ef7eb2e8f9f7 83 # ifdef _CMU_LFBCLKEN0_MASK
<> 144:ef7eb2e8f9f7 84 //CMU_ClockSelectSet(cmuClock_LFB, cmuSelect_LFRCO);
<> 144:ef7eb2e8f9f7 85 # endif
<> 144:ef7eb2e8f9f7 86 # ifdef _CMU_LFECLKEN0_MASK
<> 144:ef7eb2e8f9f7 87 CMU_ClockSelectSet(cmuClock_LFE, cmuSelect_LFRCO);
<> 144:ef7eb2e8f9f7 88 # endif
<> 144:ef7eb2e8f9f7 89
<> 144:ef7eb2e8f9f7 90 #elif( LOW_ENERGY_CLOCK_SOURCE == ULFRCO)
<> 144:ef7eb2e8f9f7 91 # ifdef _CMU_LFACLKEN0_MASK
<> 144:ef7eb2e8f9f7 92 CMU_ClockSelectSet(cmuClock_LFA, cmuSelect_ULFRCO);
<> 144:ef7eb2e8f9f7 93 # endif
<> 144:ef7eb2e8f9f7 94 # ifdef _CMU_LFBCLKEN0_MASK
<> 144:ef7eb2e8f9f7 95 CMU_ClockSelectSet(cmuClock_LFB, cmuSelect_ULFRCO);
<> 144:ef7eb2e8f9f7 96 # endif
<> 144:ef7eb2e8f9f7 97 # ifdef _CMU_LFECLKEN0_MASK
<> 144:ef7eb2e8f9f7 98 CMU_ClockSelectSet(cmuClock_LFE, cmuSelect_ULFRCO);
<> 144:ef7eb2e8f9f7 99 # endif
<> 144:ef7eb2e8f9f7 100 #else
<> 144:ef7eb2e8f9f7 101 # error "Low energy clock selection not valid"
<> 144:ef7eb2e8f9f7 102 #endif
<> 144:ef7eb2e8f9f7 103
<> 144:ef7eb2e8f9f7 104 /* Enable BC line driver to avoid garbage on CDC port */
<> 144:ef7eb2e8f9f7 105 gpio_init_out_ex(&bc_enable, EFM_BC_EN, 1);
<> 144:ef7eb2e8f9f7 106 }