added prescaler for 16 bit pwm in LPC1347 target
Fork of mbed-dev by
targets/hal/TARGET_Silicon_Labs/TARGET_EFM32/clocking.h@54:2a2065e67ef6, 2016-01-28 (annotated)
- Committer:
- mbed_official
- Date:
- Thu Jan 28 18:15:10 2016 +0000
- Revision:
- 54:2a2065e67ef6
- Parent:
- 50:a417edff4437
- Child:
- 144:ef7eb2e8f9f7
Synchronized with git revision b5816d872d02a7420c05be91bea5f898b88d2e56
Full URL: https://github.com/mbedmicro/mbed/commit/b5816d872d02a7420c05be91bea5f898b88d2e56/
[Silicon Labs] Fix support for the RC oscillator
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) |
mbed_official | 50:a417edff4437 | 35 | # define REFERENCE_FREQUENCY HFXO_FREQUENCY |
bogdanm | 0:9b334a45a8ff | 36 | #elif( CORE_CLOCK_SOURCE == HFRCO) |
mbed_official | 50:a417edff4437 | 37 | |
mbed_official | 50:a417edff4437 | 38 | # if defined _CMU_HFRCOCTRL_BAND_MASK |
mbed_official | 54:2a2065e67ef6 | 39 | # if( HFRCO_FREQUENCY == _CMU_HFRCOCTRL_BAND_1MHZ) |
mbed_official | 50:a417edff4437 | 40 | # define REFERENCE_FREQUENCY 1000000 |
mbed_official | 54:2a2065e67ef6 | 41 | # elif(HFRCO_FREQUENCY == _CMU_HFRCOCTRL_BAND_7MHZ) |
mbed_official | 50:a417edff4437 | 42 | # define REFERENCE_FREQUENCY 7000000 |
mbed_official | 54:2a2065e67ef6 | 43 | # elif(HFRCO_FREQUENCY == _CMU_HFRCOCTRL_BAND_11MHZ) |
mbed_official | 50:a417edff4437 | 44 | # define REFERENCE_FREQUENCY 7000000 |
mbed_official | 54:2a2065e67ef6 | 45 | # elif(HFRCO_FREQUENCY == _CMU_HFRCOCTRL_BAND_14MHZ) |
mbed_official | 50:a417edff4437 | 46 | # define REFERENCE_FREQUENCY 14000000 |
mbed_official | 54:2a2065e67ef6 | 47 | # elif(HFRCO_FREQUENCY == _CMU_HFRCOCTRL_BAND_21MHZ) |
mbed_official | 50:a417edff4437 | 48 | # define REFERENCE_FREQUENCY 21000000 |
mbed_official | 54:2a2065e67ef6 | 49 | # elif(HFRCO_FREQUENCY == _CMU_HFRCOCTRL_BAND_28MHZ) |
mbed_official | 50:a417edff4437 | 50 | # define REFERENCE_FREQUENCY 28000000 |
mbed_official | 50:a417edff4437 | 51 | # else |
mbed_official | 50:a417edff4437 | 52 | # define REFERENCE_FREQUENCY 14000000 |
mbed_official | 50:a417edff4437 | 53 | # endif |
mbed_official | 50:a417edff4437 | 54 | # elif defined _CMU_HFRCOCTRL_FREQRANGE_MASK |
mbed_official | 50:a417edff4437 | 55 | # define REFERENCE_FREQUENCY HFRCO_FREQUENCY |
mbed_official | 50:a417edff4437 | 56 | # else |
mbed_official | 50:a417edff4437 | 57 | # error "HFRCO frequency not defined" |
mbed_official | 50:a417edff4437 | 58 | # endif |
bogdanm | 0:9b334a45a8ff | 59 | #endif |
bogdanm | 0:9b334a45a8ff | 60 | |
bogdanm | 0:9b334a45a8ff | 61 | #if ( LOW_ENERGY_CLOCK_SOURCE == LFXO ) |
mbed_official | 50:a417edff4437 | 62 | # define LEUART_USING_LFXO |
mbed_official | 50:a417edff4437 | 63 | # if ( (defined(CMU_CTRL_HFLE) || defined(CMU_CTRL_WSHFLE) ) && (REFERENCE_FREQUENCY > 24000000) ) |
mbed_official | 50:a417edff4437 | 64 | # define LEUART_HF_REF_FREQ (REFERENCE_FREQUENCY / 4) |
mbed_official | 50:a417edff4437 | 65 | # else |
mbed_official | 50:a417edff4437 | 66 | # define LEUART_HF_REF_FREQ (REFERENCE_FREQUENCY / 2) |
mbed_official | 50:a417edff4437 | 67 | # endif |
mbed_official | 50:a417edff4437 | 68 | # define LEUART_LF_REF_FREQ LFXO_FREQUENCY |
bogdanm | 0:9b334a45a8ff | 69 | #else |
mbed_official | 50:a417edff4437 | 70 | # if ( (defined(CMU_CTRL_HFLE) || defined(CMU_CTRL_WSHFLE) ) && (REFERENCE_FREQUENCY > 24000000) ) |
mbed_official | 50:a417edff4437 | 71 | # define LEUART_REF_FREQ (REFERENCE_FREQUENCY / 4) |
mbed_official | 50:a417edff4437 | 72 | # else |
mbed_official | 50:a417edff4437 | 73 | # define LEUART_REF_FREQ (REFERENCE_FREQUENCY / 2) |
mbed_official | 50:a417edff4437 | 74 | # endif |
bogdanm | 0:9b334a45a8ff | 75 | #endif |
mbed_official | 50:a417edff4437 | 76 |