MacroRat / MouseCode

Mouse code for the MacroRat

Dependencies:   ITG3200 QEI

mbed-dev/targets/TARGET_NUVOTON/TARGET_NUC472/device/TOOLCHAIN_GCC_ARM/nuc472_retarget.c@18:6a4db94011d3, 2017-05-14 (annotated)

Committer:
sahilmgandhi
Date:
Sun May 14 23:18:57 2017 +0000
Revision:
18:6a4db94011d3
Publishing again

Who changed what in which revision?

UserRevisionLine numberNew contents of line
sahilmgandhi 18:6a4db94011d3 1 /******************************************************************************
sahilmgandhi 18:6a4db94011d3 2 * @file startup_NUC472_442.c
sahilmgandhi 18:6a4db94011d3 3 * @version V0.10
sahilmgandhi 18:6a4db94011d3 4 * $Revision: 11 $
sahilmgandhi 18:6a4db94011d3 5 * $Date: 15/09/02 10:02a $
sahilmgandhi 18:6a4db94011d3 6 * @brief CMSIS Cortex-M4 Core Peripheral Access Layer Source File for NUC472/442 MCU
sahilmgandhi 18:6a4db94011d3 7 *
sahilmgandhi 18:6a4db94011d3 8 * @note
sahilmgandhi 18:6a4db94011d3 9 * Copyright (C) 2013~2015 Nuvoton Technology Corp. All rights reserved.
sahilmgandhi 18:6a4db94011d3 10 *****************************************************************************/
sahilmgandhi 18:6a4db94011d3 11
sahilmgandhi 18:6a4db94011d3 12 #include "NUC472_442.h"
sahilmgandhi 18:6a4db94011d3 13 #include <errno.h>
sahilmgandhi 18:6a4db94011d3 14 #include "nu_miscutil.h"
sahilmgandhi 18:6a4db94011d3 15
sahilmgandhi 18:6a4db94011d3 16 extern uint32_t __mbed_sbrk_start;
sahilmgandhi 18:6a4db94011d3 17 extern uint32_t __mbed_krbs_start;
sahilmgandhi 18:6a4db94011d3 18
sahilmgandhi 18:6a4db94011d3 19 #define NU_HEAP_ALIGN 32
sahilmgandhi 18:6a4db94011d3 20
sahilmgandhi 18:6a4db94011d3 21 /**
sahilmgandhi 18:6a4db94011d3 22 * The default implementation of _sbrk() (in common/retarget.cpp) for GCC_ARM requires one-region model (heap and stack share one region), which doesn't
sahilmgandhi 18:6a4db94011d3 23 * fit two-region model (heap and stack are two distinct regions), for example, NUMAKER-PFM-NUC472 locates heap on external SRAM. Define __wrap__sbrk() to
sahilmgandhi 18:6a4db94011d3 24 * override the default _sbrk(). It is expected to get called through gcc hooking mechanism ('-Wl,--wrap,_sbrk') or in _sbrk().
sahilmgandhi 18:6a4db94011d3 25 */
sahilmgandhi 18:6a4db94011d3 26 void *__wrap__sbrk(int incr)
sahilmgandhi 18:6a4db94011d3 27 {
sahilmgandhi 18:6a4db94011d3 28 static uint32_t heap_ind = (uint32_t) &__mbed_sbrk_start;
sahilmgandhi 18:6a4db94011d3 29 uint32_t heap_ind_old = NU_ALIGN_UP(heap_ind, NU_HEAP_ALIGN);
sahilmgandhi 18:6a4db94011d3 30 uint32_t heap_ind_new = NU_ALIGN_UP(heap_ind_old + incr, NU_HEAP_ALIGN);
sahilmgandhi 18:6a4db94011d3 31
sahilmgandhi 18:6a4db94011d3 32 if (heap_ind_new > &__mbed_krbs_start) {
sahilmgandhi 18:6a4db94011d3 33 errno = ENOMEM;
sahilmgandhi 18:6a4db94011d3 34 return (void *) -1;
sahilmgandhi 18:6a4db94011d3 35 }
sahilmgandhi 18:6a4db94011d3 36
sahilmgandhi 18:6a4db94011d3 37 heap_ind = heap_ind_new;
sahilmgandhi 18:6a4db94011d3 38
sahilmgandhi 18:6a4db94011d3 39 return (void *) heap_ind_old;
sahilmgandhi 18:6a4db94011d3 40 }