added prescaler for 16 bit pwm in LPC1347 target
Fork of mbed-dev by
targets/hal/TARGET_Silicon_Labs/TARGET_EFM32/clocking.h@0:9b334a45a8ff, 2015-10-01 (annotated)
- Committer:
- bogdanm
- Date:
- Thu Oct 01 15:25:22 2015 +0300
- Revision:
- 0:9b334a45a8ff
- Child:
- 50:a417edff4437
Initial commit on mbed-dev
Replaces mbed-src (now inactive)
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
bogdanm | 0:9b334a45a8ff | 1 | /***************************************************************************//** |
bogdanm | 0:9b334a45a8ff | 2 | * @file clocking.h |
bogdanm | 0:9b334a45a8ff | 3 | * @brief Clock selection calculations |
bogdanm | 0:9b334a45a8ff | 4 | ******************************************************************************* |
bogdanm | 0:9b334a45a8ff | 5 | * @section License |
bogdanm | 0:9b334a45a8ff | 6 | * <b>(C) Copyright 2015 Silicon Labs, http://www.silabs.com</b> |
bogdanm | 0:9b334a45a8ff | 7 | ******************************************************************************* |
bogdanm | 0:9b334a45a8ff | 8 | * |
bogdanm | 0:9b334a45a8ff | 9 | * Permission is granted to anyone to use this software for any purpose, |
bogdanm | 0:9b334a45a8ff | 10 | * including commercial applications, and to alter it and redistribute it |
bogdanm | 0:9b334a45a8ff | 11 | * freely, subject to the following restrictions: |
bogdanm | 0:9b334a45a8ff | 12 | * |
bogdanm | 0:9b334a45a8ff | 13 | * 1. The origin of this software must not be misrepresented; you must not |
bogdanm | 0:9b334a45a8ff | 14 | * claim that you wrote the original software. |
bogdanm | 0:9b334a45a8ff | 15 | * 2. Altered source versions must be plainly marked as such, and must not be |
bogdanm | 0:9b334a45a8ff | 16 | * misrepresented as being the original software. |
bogdanm | 0:9b334a45a8ff | 17 | * 3. This notice may not be removed or altered from any source distribution. |
bogdanm | 0:9b334a45a8ff | 18 | * |
bogdanm | 0:9b334a45a8ff | 19 | * DISCLAIMER OF WARRANTY/LIMITATION OF REMEDIES: Silicon Labs has no |
bogdanm | 0:9b334a45a8ff | 20 | * obligation to support this Software. Silicon Labs is providing the |
bogdanm | 0:9b334a45a8ff | 21 | * Software "AS IS", with no express or implied warranties of any kind, |
bogdanm | 0:9b334a45a8ff | 22 | * including, but not limited to, any implied warranties of merchantability |
bogdanm | 0:9b334a45a8ff | 23 | * or fitness for any particular purpose or warranties against infringement |
bogdanm | 0:9b334a45a8ff | 24 | * of any proprietary rights of a third party. |
bogdanm | 0:9b334a45a8ff | 25 | * |
bogdanm | 0:9b334a45a8ff | 26 | * Silicon Labs will not be liable for any consequential, incidental, or |
bogdanm | 0:9b334a45a8ff | 27 | * special damages, or any other relief, or for any claim by any third party, |
bogdanm | 0:9b334a45a8ff | 28 | * arising from your use of this Software. |
bogdanm | 0:9b334a45a8ff | 29 | * |
bogdanm | 0:9b334a45a8ff | 30 | ******************************************************************************/ |
bogdanm | 0:9b334a45a8ff | 31 | |
bogdanm | 0:9b334a45a8ff | 32 | #include "device_peripherals.h" |
bogdanm | 0:9b334a45a8ff | 33 | |
bogdanm | 0:9b334a45a8ff | 34 | #if( CORE_CLOCK_SOURCE == HFXO) |
bogdanm | 0:9b334a45a8ff | 35 | #define REFERENCE_FREQUENCY HFXO_FREQUENCY |
bogdanm | 0:9b334a45a8ff | 36 | #elif( CORE_CLOCK_SOURCE == HFRCO) |
bogdanm | 0:9b334a45a8ff | 37 | #if( HFRCO_FREQUENCY == CMU_HFRCOCTRL_BAND_1MHZ) |
bogdanm | 0:9b334a45a8ff | 38 | #define REFERENCE_FREQUENCY 1000000 |
bogdanm | 0:9b334a45a8ff | 39 | #elif(HFRCO_FREQUENCY == CMU_HFRCOCTRL_BAND_7MHZ) |
bogdanm | 0:9b334a45a8ff | 40 | #define REFERENCE_FREQUENCY 7000000 |
bogdanm | 0:9b334a45a8ff | 41 | #elif(HFRCO_FREQUENCY == CMU_HFRCOCTRL_BAND_11MHZ) |
bogdanm | 0:9b334a45a8ff | 42 | #define REFERENCE_FREQUENCY 7000000 |
bogdanm | 0:9b334a45a8ff | 43 | #elif(HFRCO_FREQUENCY == CMU_HFRCOCTRL_BAND_14MHZ) |
bogdanm | 0:9b334a45a8ff | 44 | #define REFERENCE_FREQUENCY 14000000 |
bogdanm | 0:9b334a45a8ff | 45 | #elif(HFRCO_FREQUENCY == CMU_HFRCOCTRL_BAND_21MHZ) |
bogdanm | 0:9b334a45a8ff | 46 | #define REFERENCE_FREQUENCY 21000000 |
bogdanm | 0:9b334a45a8ff | 47 | #elif(HFRCO_FREQUENCY == CMU_HFRCOCTRL_BAND_28MHZ) |
bogdanm | 0:9b334a45a8ff | 48 | #define REFERENCE_FREQUENCY 28000000 |
bogdanm | 0:9b334a45a8ff | 49 | #else |
bogdanm | 0:9b334a45a8ff | 50 | #define REFERENCE_FREQUENCY 14000000 |
bogdanm | 0:9b334a45a8ff | 51 | #endif |
bogdanm | 0:9b334a45a8ff | 52 | #endif |
bogdanm | 0:9b334a45a8ff | 53 | |
bogdanm | 0:9b334a45a8ff | 54 | #if ( LOW_ENERGY_CLOCK_SOURCE == LFXO ) |
bogdanm | 0:9b334a45a8ff | 55 | #define LEUART_USING_LFXO |
bogdanm | 0:9b334a45a8ff | 56 | #if ( defined(CMU_CTRL_HFLE) && (REFERENCE_FREQUENCY > 24000000) ) |
bogdanm | 0:9b334a45a8ff | 57 | #define LEUART_HF_REF_FREQ (REFERENCE_FREQUENCY / 4) |
bogdanm | 0:9b334a45a8ff | 58 | #else |
bogdanm | 0:9b334a45a8ff | 59 | #define LEUART_HF_REF_FREQ (REFERENCE_FREQUENCY / 2) |
bogdanm | 0:9b334a45a8ff | 60 | #endif |
bogdanm | 0:9b334a45a8ff | 61 | #define LEUART_LF_REF_FREQ LFXO_FREQUENCY |
bogdanm | 0:9b334a45a8ff | 62 | #else |
bogdanm | 0:9b334a45a8ff | 63 | #if ( defined(CMU_CTRL_HFLE) && (REFERENCE_FREQUENCY > 24000000) ) |
bogdanm | 0:9b334a45a8ff | 64 | #define LEUART_REF_FREQ (REFERENCE_FREQUENCY / 4) |
bogdanm | 0:9b334a45a8ff | 65 | #else |
bogdanm | 0:9b334a45a8ff | 66 | #define LEUART_REF_FREQ (REFERENCE_FREQUENCY / 2) |
bogdanm | 0:9b334a45a8ff | 67 | #endif |
bogdanm | 0:9b334a45a8ff | 68 | #endif |