added prescaler for 16 bit pwm in LPC1347 target
Fork of mbed-dev by
targets/hal/TARGET_Silicon_Labs/TARGET_EFM32/emlib/src/em_prs.c@50:a417edff4437, 2016-01-15 (annotated)
- Committer:
- mbed_official
- Date:
- Fri Jan 15 07:45:16 2016 +0000
- Revision:
- 50:a417edff4437
- Parent:
- 0:9b334a45a8ff
- Child:
- 144:ef7eb2e8f9f7
Synchronized with git revision 6010f32619bfcbb01cc73747d4ff9040863482d9
Full URL: https://github.com/mbedmicro/mbed/commit/6010f32619bfcbb01cc73747d4ff9040863482d9/
Remove doubling of buffer size in realiseEndpoint()
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
bogdanm | 0:9b334a45a8ff | 1 | /***************************************************************************//** |
bogdanm | 0:9b334a45a8ff | 2 | * @file em_prs.c |
bogdanm | 0:9b334a45a8ff | 3 | * @brief Peripheral Reflex System (PRS) Peripheral API |
mbed_official | 50:a417edff4437 | 4 | * @version 4.2.1 |
bogdanm | 0:9b334a45a8ff | 5 | ******************************************************************************* |
bogdanm | 0:9b334a45a8ff | 6 | * @section License |
mbed_official | 50:a417edff4437 | 7 | * <b>(C) Copyright 2015 Silicon Labs, http://www.silabs.com</b> |
bogdanm | 0:9b334a45a8ff | 8 | ******************************************************************************* |
bogdanm | 0:9b334a45a8ff | 9 | * |
bogdanm | 0:9b334a45a8ff | 10 | * Permission is granted to anyone to use this software for any purpose, |
bogdanm | 0:9b334a45a8ff | 11 | * including commercial applications, and to alter it and redistribute it |
bogdanm | 0:9b334a45a8ff | 12 | * freely, subject to the following restrictions: |
bogdanm | 0:9b334a45a8ff | 13 | * |
bogdanm | 0:9b334a45a8ff | 14 | * 1. The origin of this software must not be misrepresented; you must not |
bogdanm | 0:9b334a45a8ff | 15 | * claim that you wrote the original software. |
bogdanm | 0:9b334a45a8ff | 16 | * 2. Altered source versions must be plainly marked as such, and must not be |
bogdanm | 0:9b334a45a8ff | 17 | * misrepresented as being the original software. |
bogdanm | 0:9b334a45a8ff | 18 | * 3. This notice may not be removed or altered from any source distribution. |
bogdanm | 0:9b334a45a8ff | 19 | * |
bogdanm | 0:9b334a45a8ff | 20 | * DISCLAIMER OF WARRANTY/LIMITATION OF REMEDIES: Silicon Labs has no |
bogdanm | 0:9b334a45a8ff | 21 | * obligation to support this Software. Silicon Labs is providing the |
bogdanm | 0:9b334a45a8ff | 22 | * Software "AS IS", with no express or implied warranties of any kind, |
bogdanm | 0:9b334a45a8ff | 23 | * including, but not limited to, any implied warranties of merchantability |
bogdanm | 0:9b334a45a8ff | 24 | * or fitness for any particular purpose or warranties against infringement |
bogdanm | 0:9b334a45a8ff | 25 | * of any proprietary rights of a third party. |
bogdanm | 0:9b334a45a8ff | 26 | * |
bogdanm | 0:9b334a45a8ff | 27 | * Silicon Labs will not be liable for any consequential, incidental, or |
bogdanm | 0:9b334a45a8ff | 28 | * special damages, or any other relief, or for any claim by any third party, |
bogdanm | 0:9b334a45a8ff | 29 | * arising from your use of this Software. |
bogdanm | 0:9b334a45a8ff | 30 | * |
bogdanm | 0:9b334a45a8ff | 31 | ******************************************************************************/ |
bogdanm | 0:9b334a45a8ff | 32 | |
bogdanm | 0:9b334a45a8ff | 33 | #include "em_prs.h" |
bogdanm | 0:9b334a45a8ff | 34 | #if defined(PRS_COUNT) && (PRS_COUNT > 0) |
bogdanm | 0:9b334a45a8ff | 35 | |
bogdanm | 0:9b334a45a8ff | 36 | #include "em_assert.h" |
bogdanm | 0:9b334a45a8ff | 37 | |
bogdanm | 0:9b334a45a8ff | 38 | /***************************************************************************//** |
bogdanm | 0:9b334a45a8ff | 39 | * @addtogroup EM_Library |
bogdanm | 0:9b334a45a8ff | 40 | * @{ |
bogdanm | 0:9b334a45a8ff | 41 | ******************************************************************************/ |
bogdanm | 0:9b334a45a8ff | 42 | |
bogdanm | 0:9b334a45a8ff | 43 | /***************************************************************************//** |
bogdanm | 0:9b334a45a8ff | 44 | * @addtogroup PRS |
bogdanm | 0:9b334a45a8ff | 45 | * @brief Peripheral Reflex System (PRS) Peripheral API |
bogdanm | 0:9b334a45a8ff | 46 | * @{ |
bogdanm | 0:9b334a45a8ff | 47 | ******************************************************************************/ |
bogdanm | 0:9b334a45a8ff | 48 | |
bogdanm | 0:9b334a45a8ff | 49 | /******************************************************************************* |
bogdanm | 0:9b334a45a8ff | 50 | ************************** GLOBAL FUNCTIONS ******************************* |
bogdanm | 0:9b334a45a8ff | 51 | ******************************************************************************/ |
bogdanm | 0:9b334a45a8ff | 52 | |
bogdanm | 0:9b334a45a8ff | 53 | /***************************************************************************//** |
bogdanm | 0:9b334a45a8ff | 54 | * @brief |
bogdanm | 0:9b334a45a8ff | 55 | * Set source and signal to be used for a channel. |
bogdanm | 0:9b334a45a8ff | 56 | * |
bogdanm | 0:9b334a45a8ff | 57 | * @param[in] ch |
bogdanm | 0:9b334a45a8ff | 58 | * Channel to define signal and source for. |
bogdanm | 0:9b334a45a8ff | 59 | * |
bogdanm | 0:9b334a45a8ff | 60 | * @param[in] source |
bogdanm | 0:9b334a45a8ff | 61 | * Source to select for channel. Use one of PRS_CH_CTRL_SOURCESEL_x defines. |
bogdanm | 0:9b334a45a8ff | 62 | * |
bogdanm | 0:9b334a45a8ff | 63 | * @param[in] signal |
bogdanm | 0:9b334a45a8ff | 64 | * Signal (for selected @p source) to use. Use one of PRS_CH_CTRL_SIGSEL_x |
bogdanm | 0:9b334a45a8ff | 65 | * defines. |
bogdanm | 0:9b334a45a8ff | 66 | * |
bogdanm | 0:9b334a45a8ff | 67 | * @param[in] edge |
bogdanm | 0:9b334a45a8ff | 68 | * Edge (for selected source/signal) to generate pulse for. |
bogdanm | 0:9b334a45a8ff | 69 | ******************************************************************************/ |
bogdanm | 0:9b334a45a8ff | 70 | void PRS_SourceSignalSet(unsigned int ch, |
bogdanm | 0:9b334a45a8ff | 71 | uint32_t source, |
bogdanm | 0:9b334a45a8ff | 72 | uint32_t signal, |
bogdanm | 0:9b334a45a8ff | 73 | PRS_Edge_TypeDef edge) |
bogdanm | 0:9b334a45a8ff | 74 | { |
bogdanm | 0:9b334a45a8ff | 75 | EFM_ASSERT(ch < PRS_CHAN_COUNT); |
bogdanm | 0:9b334a45a8ff | 76 | |
mbed_official | 50:a417edff4437 | 77 | PRS->CH[ch].CTRL = (source & _PRS_CH_CTRL_SOURCESEL_MASK) |
mbed_official | 50:a417edff4437 | 78 | | (signal & _PRS_CH_CTRL_SIGSEL_MASK) |
mbed_official | 50:a417edff4437 | 79 | | (uint32_t)edge; |
bogdanm | 0:9b334a45a8ff | 80 | } |
bogdanm | 0:9b334a45a8ff | 81 | |
bogdanm | 0:9b334a45a8ff | 82 | #if defined( PRS_CH_CTRL_ASYNC ) |
bogdanm | 0:9b334a45a8ff | 83 | /***************************************************************************//** |
bogdanm | 0:9b334a45a8ff | 84 | * @brief |
bogdanm | 0:9b334a45a8ff | 85 | * Set source and asynchronous signal to be used for a channel. |
bogdanm | 0:9b334a45a8ff | 86 | * |
bogdanm | 0:9b334a45a8ff | 87 | * @details |
bogdanm | 0:9b334a45a8ff | 88 | * Asynchronous reflexes are not clocked on HFPERCLK, and can be used even in |
bogdanm | 0:9b334a45a8ff | 89 | * EM2/EM3. |
bogdanm | 0:9b334a45a8ff | 90 | * There is a limitation to reflexes operating in asynchronous mode: they can |
bogdanm | 0:9b334a45a8ff | 91 | * only be used by a subset of the reflex consumers. Please refer to PRS |
bogdanm | 0:9b334a45a8ff | 92 | * chapter in the reference manual for the complete list of supported |
bogdanm | 0:9b334a45a8ff | 93 | * asynchronous signals and consumers. |
bogdanm | 0:9b334a45a8ff | 94 | * |
bogdanm | 0:9b334a45a8ff | 95 | * @note |
mbed_official | 50:a417edff4437 | 96 | * This function is not supported on EFM32GxxxFyyy parts. |
bogdanm | 0:9b334a45a8ff | 97 | * In asynchronous mode, the edge detector only works in EM0, hence it shall |
bogdanm | 0:9b334a45a8ff | 98 | * not be used. The EDSEL parameter in PRS_CHx_CTRL register is set to 0 (OFF) |
bogdanm | 0:9b334a45a8ff | 99 | * by default. |
bogdanm | 0:9b334a45a8ff | 100 | * |
bogdanm | 0:9b334a45a8ff | 101 | * @param[in] ch |
bogdanm | 0:9b334a45a8ff | 102 | * Channel to define source and asynchronous signal for. |
bogdanm | 0:9b334a45a8ff | 103 | * |
bogdanm | 0:9b334a45a8ff | 104 | * @param[in] source |
bogdanm | 0:9b334a45a8ff | 105 | * Source to select for channel. Use one of PRS_CH_CTRL_SOURCESEL_x defines. |
bogdanm | 0:9b334a45a8ff | 106 | * |
bogdanm | 0:9b334a45a8ff | 107 | * @param[in] signal |
bogdanm | 0:9b334a45a8ff | 108 | * Asynchronous signal (for selected @p source) to use. Use one of the |
bogdanm | 0:9b334a45a8ff | 109 | * PRS_CH_CTRL_SIGSEL_x defines that support asynchronous operation. |
bogdanm | 0:9b334a45a8ff | 110 | ******************************************************************************/ |
bogdanm | 0:9b334a45a8ff | 111 | void PRS_SourceAsyncSignalSet(unsigned int ch, |
bogdanm | 0:9b334a45a8ff | 112 | uint32_t source, |
bogdanm | 0:9b334a45a8ff | 113 | uint32_t signal) |
bogdanm | 0:9b334a45a8ff | 114 | { |
bogdanm | 0:9b334a45a8ff | 115 | EFM_ASSERT(ch < PRS_CHAN_COUNT); |
bogdanm | 0:9b334a45a8ff | 116 | |
mbed_official | 50:a417edff4437 | 117 | PRS->CH[ch].CTRL = PRS_CH_CTRL_ASYNC |
mbed_official | 50:a417edff4437 | 118 | | (source & _PRS_CH_CTRL_SOURCESEL_MASK) |
mbed_official | 50:a417edff4437 | 119 | | (signal & _PRS_CH_CTRL_SIGSEL_MASK) |
mbed_official | 50:a417edff4437 | 120 | | PRS_CH_CTRL_EDSEL_OFF; |
bogdanm | 0:9b334a45a8ff | 121 | } |
bogdanm | 0:9b334a45a8ff | 122 | #endif |
bogdanm | 0:9b334a45a8ff | 123 | |
bogdanm | 0:9b334a45a8ff | 124 | /** @} (end addtogroup PRS) */ |
bogdanm | 0:9b334a45a8ff | 125 | /** @} (end addtogroup EM_Library) */ |
bogdanm | 0:9b334a45a8ff | 126 | #endif /* defined(PRS_COUNT) && (PRS_COUNT > 0) */ |