Johannes Stratmann / mbed-dev

added prescaler for 16 bit pwm in LPC1347 target

Fork of mbed-dev by mbed official

targets/hal/TARGET_Silicon_Labs/TARGET_EFM32/emlib/src/em_int.c@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?

UserRevisionLine numberNew contents of line
bogdanm 0:9b334a45a8ff 1 /**************************************************************************//**
bogdanm 0:9b334a45a8ff 2 * @file em_int.c
bogdanm 0:9b334a45a8ff 3 * @brief Interrupt enable/disable unit API
bogdanm 0:9b334a45a8ff 4 * @version 3.20.12
bogdanm 0:9b334a45a8ff 5 ******************************************************************************
bogdanm 0:9b334a45a8ff 6 * @section License
bogdanm 0:9b334a45a8ff 7 * <b>(C) Copyright 2014 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
bogdanm 0:9b334a45a8ff 34 #include <stdint.h>
bogdanm 0:9b334a45a8ff 35 #include "em_int.h"
bogdanm 0:9b334a45a8ff 36
bogdanm 0:9b334a45a8ff 37 /***************************************************************************//**
bogdanm 0:9b334a45a8ff 38 * @addtogroup EM_Library
bogdanm 0:9b334a45a8ff 39 * @{
bogdanm 0:9b334a45a8ff 40 ******************************************************************************/
bogdanm 0:9b334a45a8ff 41
bogdanm 0:9b334a45a8ff 42 /***************************************************************************//**
bogdanm 0:9b334a45a8ff 43 * @addtogroup INT
bogdanm 0:9b334a45a8ff 44 * @brief Safe nesting interrupt disable/enable API
bogdanm 0:9b334a45a8ff 45 * @{
bogdanm 0:9b334a45a8ff 46 * @details
bogdanm 0:9b334a45a8ff 47 * This module contains functions to safely disable and enable interrupts
bogdanm 0:9b334a45a8ff 48 * at cpu level. INT_Disable() disables interrupts and increments a lock
bogdanm 0:9b334a45a8ff 49 * level counter. INT_Enable() decrements the lock level counter and enable
bogdanm 0:9b334a45a8ff 50 * interrupts if the counter was decremented to zero.
bogdanm 0:9b334a45a8ff 51 *
bogdanm 0:9b334a45a8ff 52 * These functions would normally be used to secure critical regions.
bogdanm 0:9b334a45a8ff 53 *
bogdanm 0:9b334a45a8ff 54 * These functions should also be used inside interrupt handlers:
bogdanm 0:9b334a45a8ff 55 * @verbatim
bogdanm 0:9b334a45a8ff 56 * void SysTick_Handler(void)
bogdanm 0:9b334a45a8ff 57 * {
bogdanm 0:9b334a45a8ff 58 * INT_Disable();
bogdanm 0:9b334a45a8ff 59 * .
bogdanm 0:9b334a45a8ff 60 * .
bogdanm 0:9b334a45a8ff 61 * .
bogdanm 0:9b334a45a8ff 62 * INT_Enable();
bogdanm 0:9b334a45a8ff 63 * }
bogdanm 0:9b334a45a8ff 64 * @endverbatim
bogdanm 0:9b334a45a8ff 65 ******************************************************************************/
bogdanm 0:9b334a45a8ff 66
bogdanm 0:9b334a45a8ff 67 /** Interrupt lock level counter. Set to zero initially as we normally enter
bogdanm 0:9b334a45a8ff 68 * main with interrupts enabled */
bogdanm 0:9b334a45a8ff 69 uint32_t INT_LockCnt = 0;
bogdanm 0:9b334a45a8ff 70
bogdanm 0:9b334a45a8ff 71
bogdanm 0:9b334a45a8ff 72 /** @} (end addtogroup INT) */
bogdanm 0:9b334a45a8ff 73 /** @} (end addtogroup EM_Library) */