mbed official / mbed

The official Mbed 2 C/C++ SDK provides the software platform and libraries to build your applications.

Dependents:   hello SerialTestv11 SerialTestv12 Sierpinski ... more

mbed 2

This is the mbed 2 library. If you'd like to learn about Mbed OS please see the mbed-os docs.

TARGET_EFM32ZG_STK3200/TARGET_Silicon_Labs/TARGET_EFM32/common/clocking.h@136:ef9c61f8c49f, 2017-02-14 (annotated)

Committer:
Kojto
Date:
Tue Feb 14 11:24:20 2017 +0000
Revision:
136:ef9c61f8c49f
Parent:
128:9bcdf88f62b0
Child:
161:aa5281ff4a02
Release 136 of the mbed library



Ports for Upcoming Targets





Fixes and Changes



3432: Target STM USBHOST support https://github.com/ARMmbed/mbed-os/pull/3432

3181: NUCLEO_F207ZG extending PeripheralPins.c: all available alternate functions can be used now https://github.com/ARMmbed/mbed-os/pull/3181

3626: NUCLEO_F412ZG : Add USB Device +Host https://github.com/ARMmbed/mbed-os/pull/3626

3628: Fix warnings https://github.com/ARMmbed/mbed-os/pull/3628

3629: STM32: L0 LL layer https://github.com/ARMmbed/mbed-os/pull/3629

3632: IDE Export support for platform VK_RZ_A1H https://github.com/ARMmbed/mbed-os/pull/3632

3642: Missing IRQ pin fix for platform VK_RZ_A1H https://github.com/ARMmbed/mbed-os/pull/3642

3664: Fix ncs36510 sleep definitions https://github.com/ARMmbed/mbed-os/pull/3664

3655: [STM32F4] Modify folder structure https://github.com/ARMmbed/mbed-os/pull/3655

3657: [STM32L4] Modify folder structure https://github.com/ARMmbed/mbed-os/pull/3657

3658: [STM32F3] Modify folder structure https://github.com/ARMmbed/mbed-os/pull/3658

3685: STM32: I2C: reset state machine https://github.com/ARMmbed/mbed-os/pull/3685

3692: uVisor: Standardize available legacy heap and stack https://github.com/ARMmbed/mbed-os/pull/3692

3621: Fix for #2884, LPC824: export to LPCXpresso, target running with wron https://github.com/ARMmbed/mbed-os/pull/3621

3649: [STM32F7] Modify folder structure  https://github.com/ARMmbed/mbed-os/pull/3649

3695: Enforce device_name is valid in targets.json https://github.com/ARMmbed/mbed-os/pull/3695

3723: NCS36510: spi_format function bug fix https://github.com/ARMmbed/mbed-os/pull/3723

Who changed what in which revision?

UserRevisionLine numberNew contents of line
<> 128:9bcdf88f62b0 1 /***************************************************************************//**
<> 128:9bcdf88f62b0 2 * @file clocking.h
<> 128:9bcdf88f62b0 3 * @brief Clock selection calculations
<> 128:9bcdf88f62b0 4 *******************************************************************************
<> 128:9bcdf88f62b0 5 * @section License
<> 128:9bcdf88f62b0 6 * <b>(C) Copyright 2015 Silicon Labs, http://www.silabs.com</b>
<> 128:9bcdf88f62b0 7 *******************************************************************************
<> 128:9bcdf88f62b0 8 *
<> 128:9bcdf88f62b0 9 * SPDX-License-Identifier: Apache-2.0
<> 128:9bcdf88f62b0 10 *
<> 128:9bcdf88f62b0 11 * Licensed under the Apache License, Version 2.0 (the "License"); you may
<> 128:9bcdf88f62b0 12 * not use this file except in compliance with the License.
<> 128:9bcdf88f62b0 13 * You may obtain a copy of the License at
<> 128:9bcdf88f62b0 14 *
<> 128:9bcdf88f62b0 15 * http://www.apache.org/licenses/LICENSE-2.0
<> 128:9bcdf88f62b0 16 *
<> 128:9bcdf88f62b0 17 * Unless required by applicable law or agreed to in writing, software
<> 128:9bcdf88f62b0 18 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
<> 128:9bcdf88f62b0 19 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
<> 128:9bcdf88f62b0 20 * See the License for the specific language governing permissions and
<> 128:9bcdf88f62b0 21 * limitations under the License.
<> 128:9bcdf88f62b0 22 *
<> 128:9bcdf88f62b0 23 ******************************************************************************/
<> 128:9bcdf88f62b0 24 #ifndef MBED_CLOCKING_H
<> 128:9bcdf88f62b0 25 #define MBED_CLOCKING_H
<> 128:9bcdf88f62b0 26
<> 128:9bcdf88f62b0 27 /* Clock definitions */
<> 128:9bcdf88f62b0 28 #define LFXO 0
<> 128:9bcdf88f62b0 29 #define HFXO 1
<> 128:9bcdf88f62b0 30 #define LFRCO 2
<> 128:9bcdf88f62b0 31 #define HFRCO 3
<> 128:9bcdf88f62b0 32 #if !defined(_EFM32_GECKO_FAMILY)
<> 128:9bcdf88f62b0 33 #define ULFRCO 4
<> 128:9bcdf88f62b0 34 #endif
<> 128:9bcdf88f62b0 35
<> 128:9bcdf88f62b0 36 /* Low Energy peripheral clock source.
<> 128:9bcdf88f62b0 37 * Options:
<> 128:9bcdf88f62b0 38 * * LFXO: external crystal, please define frequency.
<> 128:9bcdf88f62b0 39 * * LFRCO: internal RC oscillator (32.768kHz)
<> 128:9bcdf88f62b0 40 * * ULFRCO: internal ultra-low power RC oscillator (available down to EM3) (1kHz)
<> 128:9bcdf88f62b0 41 */
<> 128:9bcdf88f62b0 42 #ifndef LOW_ENERGY_CLOCK_SOURCE
<> 128:9bcdf88f62b0 43 #define LOW_ENERGY_CLOCK_SOURCE LFXO
<> 128:9bcdf88f62b0 44 #endif
<> 128:9bcdf88f62b0 45
<> 128:9bcdf88f62b0 46 /** Core clock source.
<> 128:9bcdf88f62b0 47 * Options:
<> 128:9bcdf88f62b0 48 * * HFXO: external crystal, please define frequency.
<> 128:9bcdf88f62b0 49 * * HFRCO: High-frequency internal RC oscillator. Please select band as well.
<> 128:9bcdf88f62b0 50 */
<> 128:9bcdf88f62b0 51 #ifndef CORE_CLOCK_SOURCE
<> 128:9bcdf88f62b0 52 #define CORE_CLOCK_SOURCE HFRCO
<> 128:9bcdf88f62b0 53 #if defined(_CMU_HFRCOCTRL_BAND_MASK)
<> 128:9bcdf88f62b0 54 #define HFRCO_FREQUENCY_ENUM _CMU_HFRCOCTRL_BAND_21MHZ
<> 128:9bcdf88f62b0 55 #define HFRCO_FREQUENCY 21000000
<> 128:9bcdf88f62b0 56 #elif defined(_CMU_HFRCOCTRL_FREQRANGE_MASK)
<> 128:9bcdf88f62b0 57 #define HFRCO_FREQUENCY_ENUM cmuHFRCOFreq_32M0Hz
<> 128:9bcdf88f62b0 58 #define HFRCO_FREQUENCY 32000000
<> 128:9bcdf88f62b0 59 #endif
<> 128:9bcdf88f62b0 60 #endif // CORE_CLOCK_SOURCE
<> 128:9bcdf88f62b0 61
<> 128:9bcdf88f62b0 62 #if !defined(LFXO_FREQUENCY) && (LOW_ENERGY_CLOCK_SOURCE == LFXO)
<> 128:9bcdf88f62b0 63 #error "LFXO frequency is undefined!"
<> 128:9bcdf88f62b0 64 #endif
<> 128:9bcdf88f62b0 65
<> 128:9bcdf88f62b0 66 #if !defined(HFXO_FREQUENCY) && (CORE_CLOCK_SOURCE == HFXO)
<> 128:9bcdf88f62b0 67 #error "HFXO frequency is undefined!"
<> 128:9bcdf88f62b0 68 #endif
<> 128:9bcdf88f62b0 69
<> 128:9bcdf88f62b0 70 #if (LOW_ENERGY_CLOCK_SOURCE == LFXO)
<> 128:9bcdf88f62b0 71 #define LOW_ENERGY_CLOCK_FREQUENCY LFXO_FREQUENCY
<> 128:9bcdf88f62b0 72 #elif (LOW_ENERGY_CLOCK_SOURCE == LFRCO)
<> 128:9bcdf88f62b0 73 #define LOW_ENERGY_CLOCK_FREQUENCY 32768
<> 128:9bcdf88f62b0 74 #elif (LOW_ENERGY_CLOCK_SOURCE == ULFRCO)
<> 128:9bcdf88f62b0 75 #define LOW_ENERGY_CLOCK_FREQUENCY 1000
<> 128:9bcdf88f62b0 76 #else
<> 128:9bcdf88f62b0 77 #error "Unknown Low Energy Clock selection"
<> 128:9bcdf88f62b0 78 #endif
<> 128:9bcdf88f62b0 79
<> 128:9bcdf88f62b0 80 #if( CORE_CLOCK_SOURCE == HFXO)
<> 128:9bcdf88f62b0 81 # define REFERENCE_FREQUENCY HFXO_FREQUENCY
<> 128:9bcdf88f62b0 82 #elif( CORE_CLOCK_SOURCE == HFRCO)
<> 128:9bcdf88f62b0 83 #if !defined(HFRCO_FREQUENCY)
<> 128:9bcdf88f62b0 84 # error "HFRCO frequency is not defined!"
<> 128:9bcdf88f62b0 85 #else
<> 128:9bcdf88f62b0 86 # define REFERENCE_FREQUENCY HFRCO_FREQUENCY
<> 128:9bcdf88f62b0 87 #endif
<> 128:9bcdf88f62b0 88 #endif
<> 128:9bcdf88f62b0 89
<> 128:9bcdf88f62b0 90 #if ( LOW_ENERGY_CLOCK_SOURCE == LFXO )
<> 128:9bcdf88f62b0 91 # define LEUART_USING_LFXO
<> 128:9bcdf88f62b0 92 # if ( (defined(CMU_CTRL_HFLE) || defined(CMU_CTRL_WSHFLE) ) && (REFERENCE_FREQUENCY > 24000000) )
<> 128:9bcdf88f62b0 93 # define LEUART_HF_REF_FREQ (REFERENCE_FREQUENCY / 4)
<> 128:9bcdf88f62b0 94 # else
<> 128:9bcdf88f62b0 95 # define LEUART_HF_REF_FREQ (REFERENCE_FREQUENCY / 2)
<> 128:9bcdf88f62b0 96 # endif
<> 128:9bcdf88f62b0 97 # define LEUART_LF_REF_FREQ LFXO_FREQUENCY
<> 128:9bcdf88f62b0 98 #else
<> 128:9bcdf88f62b0 99 # if ( (defined(CMU_CTRL_HFLE) || defined(CMU_CTRL_WSHFLE) ) && (REFERENCE_FREQUENCY > 24000000) )
<> 128:9bcdf88f62b0 100 # define LEUART_REF_FREQ (REFERENCE_FREQUENCY / 4)
<> 128:9bcdf88f62b0 101 # else
<> 128:9bcdf88f62b0 102 # define LEUART_REF_FREQ (REFERENCE_FREQUENCY / 2)
<> 128:9bcdf88f62b0 103 # endif
<> 128:9bcdf88f62b0 104 #endif
<> 128:9bcdf88f62b0 105
<> 128:9bcdf88f62b0 106 #endif