added prescaler for 16 bit pwm in LPC1347 target
Fork of mbed-dev by
targets/hal/TARGET_Silicon_Labs/TARGET_EFM32/emlib/src/em_int.c
- Committer:
- mbed_official
- Date:
- 2016-01-15
- Revision:
- 50:a417edff4437
- Parent:
- 0:9b334a45a8ff
- Child:
- 144:ef7eb2e8f9f7
File content as of revision 50:a417edff4437:
/**************************************************************************//** * @file em_int.c * @brief Interrupt enable/disable unit API * @version 4.2.1 ****************************************************************************** * @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 <stdint.h> #include "em_int.h" /***************************************************************************//** * @addtogroup EM_Library * @{ ******************************************************************************/ /***************************************************************************//** * @addtogroup INT * @brief Safe nesting of interrupt disable/enable API * @{ * @details * This module contains functions to safely disable and enable interrupts * at CPU level. INT_Disable() disables interrupts globally and increments a lock * level counter (counting semaphore). INT_Enable() decrements the lock level * counter and enable interrupts if the counter reaches zero. * * These functions would normally be used to secure critical regions, and * to make sure that a critical section that calls into another critical * section does not unintentionally terminate the callee critical section. * * These functions should also be used inside interrupt handlers: * @verbatim * void SysTick_Handler(void) * { * INT_Disable(); * . * . * . * INT_Enable(); * } * @endverbatim ******************************************************************************/ /** Interrupt lock level counter. Set to zero initially as we normally enter * main with interrupts enabled */ uint32_t INT_LockCnt = 0; /** @} (end addtogroup INT) */ /** @} (end addtogroup EM_Library) */