added prescaler for 16 bit pwm in LPC1347 target
Fork of mbed-dev by
Diff: targets/hal/TARGET_Silicon_Labs/TARGET_EFM32/clocking.h
- Revision:
- 144:ef7eb2e8f9f7
- Parent:
- 54:2a2065e67ef6
--- a/targets/hal/TARGET_Silicon_Labs/TARGET_EFM32/clocking.h Tue Aug 02 14:07:36 2016 +0000 +++ b/targets/hal/TARGET_Silicon_Labs/TARGET_EFM32/clocking.h Fri Sep 02 15:07:44 2016 +0100 @@ -1,76 +1,69 @@ -/***************************************************************************//** - * @file clocking.h - * @brief Clock selection calculations - ******************************************************************************* - * @section License - * <b>(C) Copyright 2015 Silicon Labs, 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. - * - ******************************************************************************/ - -#include "device_peripherals.h" - -#if( CORE_CLOCK_SOURCE == HFXO) -# define REFERENCE_FREQUENCY HFXO_FREQUENCY -#elif( CORE_CLOCK_SOURCE == HFRCO) - -# if defined _CMU_HFRCOCTRL_BAND_MASK -# if( HFRCO_FREQUENCY == _CMU_HFRCOCTRL_BAND_1MHZ) -# define REFERENCE_FREQUENCY 1000000 -# elif(HFRCO_FREQUENCY == _CMU_HFRCOCTRL_BAND_7MHZ) -# define REFERENCE_FREQUENCY 7000000 -# elif(HFRCO_FREQUENCY == _CMU_HFRCOCTRL_BAND_11MHZ) -# define REFERENCE_FREQUENCY 7000000 -# elif(HFRCO_FREQUENCY == _CMU_HFRCOCTRL_BAND_14MHZ) -# define REFERENCE_FREQUENCY 14000000 -# elif(HFRCO_FREQUENCY == _CMU_HFRCOCTRL_BAND_21MHZ) -# define REFERENCE_FREQUENCY 21000000 -# elif(HFRCO_FREQUENCY == _CMU_HFRCOCTRL_BAND_28MHZ) -# define REFERENCE_FREQUENCY 28000000 -# else -# define REFERENCE_FREQUENCY 14000000 -# endif -# elif defined _CMU_HFRCOCTRL_FREQRANGE_MASK -# define REFERENCE_FREQUENCY HFRCO_FREQUENCY -# else -# error "HFRCO frequency not defined" -# endif -#endif - -#if ( LOW_ENERGY_CLOCK_SOURCE == LFXO ) -# define LEUART_USING_LFXO -# if ( (defined(CMU_CTRL_HFLE) || defined(CMU_CTRL_WSHFLE) ) && (REFERENCE_FREQUENCY > 24000000) ) -# define LEUART_HF_REF_FREQ (REFERENCE_FREQUENCY / 4) -# else -# define LEUART_HF_REF_FREQ (REFERENCE_FREQUENCY / 2) -# endif -# define LEUART_LF_REF_FREQ LFXO_FREQUENCY -#else -# if ( (defined(CMU_CTRL_HFLE) || defined(CMU_CTRL_WSHFLE) ) && (REFERENCE_FREQUENCY > 24000000) ) -# define LEUART_REF_FREQ (REFERENCE_FREQUENCY / 4) -# else -# define LEUART_REF_FREQ (REFERENCE_FREQUENCY / 2) -# endif -#endif - +/***************************************************************************//** + * @file clocking.h + * @brief Clock selection calculations + ******************************************************************************* + * @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 "device_peripherals.h" + +#if( CORE_CLOCK_SOURCE == HFXO) +# define REFERENCE_FREQUENCY HFXO_FREQUENCY +#elif( CORE_CLOCK_SOURCE == HFRCO) + +# if defined _CMU_HFRCOCTRL_BAND_MASK +# if( HFRCO_FREQUENCY == _CMU_HFRCOCTRL_BAND_1MHZ) +# define REFERENCE_FREQUENCY 1000000 +# elif(HFRCO_FREQUENCY == _CMU_HFRCOCTRL_BAND_7MHZ) +# define REFERENCE_FREQUENCY 7000000 +# elif(HFRCO_FREQUENCY == _CMU_HFRCOCTRL_BAND_11MHZ) +# define REFERENCE_FREQUENCY 7000000 +# elif(HFRCO_FREQUENCY == _CMU_HFRCOCTRL_BAND_14MHZ) +# define REFERENCE_FREQUENCY 14000000 +# elif(HFRCO_FREQUENCY == _CMU_HFRCOCTRL_BAND_21MHZ) +# define REFERENCE_FREQUENCY 21000000 +# elif(HFRCO_FREQUENCY == _CMU_HFRCOCTRL_BAND_28MHZ) +# define REFERENCE_FREQUENCY 28000000 +# else +# define REFERENCE_FREQUENCY 14000000 +# endif +# elif defined _CMU_HFRCOCTRL_FREQRANGE_MASK +# define REFERENCE_FREQUENCY HFRCO_FREQUENCY +# else +# error "HFRCO frequency not defined" +# endif +#endif + +#if ( LOW_ENERGY_CLOCK_SOURCE == LFXO ) +# define LEUART_USING_LFXO +# if ( (defined(CMU_CTRL_HFLE) || defined(CMU_CTRL_WSHFLE) ) && (REFERENCE_FREQUENCY > 24000000) ) +# define LEUART_HF_REF_FREQ (REFERENCE_FREQUENCY / 4) +# else +# define LEUART_HF_REF_FREQ (REFERENCE_FREQUENCY / 2) +# endif +# define LEUART_LF_REF_FREQ LFXO_FREQUENCY +#else +# if ( (defined(CMU_CTRL_HFLE) || defined(CMU_CTRL_WSHFLE) ) && (REFERENCE_FREQUENCY > 24000000) ) +# define LEUART_REF_FREQ (REFERENCE_FREQUENCY / 4) +# else +# define LEUART_REF_FREQ (REFERENCE_FREQUENCY / 2) +# endif +#endif +