added prescaler for 16 bit pwm in LPC1347 target
Fork of mbed-dev by
Diff: targets/cmsis/TARGET_ARM_SSG/TARGET_MPS2_M0P/cmsis_nvic.c
- Revision:
- 0:9b334a45a8ff
- Child:
- 80:bdf1132a57cf
diff -r 000000000000 -r 9b334a45a8ff targets/cmsis/TARGET_ARM_SSG/TARGET_MPS2_M0P/cmsis_nvic.c --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/targets/cmsis/TARGET_ARM_SSG/TARGET_MPS2_M0P/cmsis_nvic.c Thu Oct 01 15:25:22 2015 +0300 @@ -0,0 +1,54 @@ +/* MPS2 CMSIS Library +* +* Copyright (c) 2006-2015 ARM Limited +* All rights reserved. +* +* Redistribution and use in source and binary forms, with or without +* modification, are permitted provided that the following conditions are met: +* +* 1. Redistributions of source code must retain the above copyright notice, +* this list of conditions and the following disclaimer. +* +* 2. Redistributions in binary form must reproduce the above copyright notice, +* this list of conditions and the following disclaimer in the documentation +* and/or other materials provided with the distribution. +* +* 3. Neither the name of the copyright holder nor the names of its contributors +* may be used to endorse or promote products derived from this software without +* specific prior written permission. +* +* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" +* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE +* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR +* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF +* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS +* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN +* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) +* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE +* POSSIBILITY OF SUCH DAMAGE. +******************************************************************************* +* CMSIS-style functionality to support dynamic vectors +*******************************************************************************/ +#include "cmsis_nvic.h" + +#define NVIC_RAM_VECTOR_ADDRESS (0x20000000) // Location of vectors in RAM +#define NVIC_FLASH_VECTOR_ADDRESS (0x00000000) // Initial vector position in flash + +void NVIC_SetVector(IRQn_Type IRQn, uint32_t vector) { + // int i; + // Space for dynamic vectors, initialised to allocate in R/W + static volatile uint32_t* vectors = (uint32_t*)NVIC_FLASH_VECTOR_ADDRESS; + + // Set the vector + vectors[IRQn + 16] = vector; +} + +uint32_t NVIC_GetVector(IRQn_Type IRQn) { + // We can always read vectors at 0x0, as the addresses are remapped + uint32_t *vectors = (uint32_t*)NVIC_FLASH_VECTOR_ADDRESS; + + // Return the vector + return vectors[IRQn + 16]; +}