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Color Oled(SSD1331) connect to STMicroelectronics Nucleo-F466
mbed-os/targets/TARGET_NUVOTON/TARGET_NUC472/device/TOOLCHAIN_GCC_ARM/nuc472_retarget.c
- Committer:
- kadonotakashi
- Date:
- 2018-10-11
- Revision:
- 3:f3764f852aa8
- Parent:
- 0:8fdf9a60065b
File content as of revision 3:f3764f852aa8:
/****************************************************************************** * @file startup_NUC472_442.c * @version V0.10 * $Revision: 11 $ * $Date: 15/09/02 10:02a $ * @brief CMSIS Cortex-M4 Core Peripheral Access Layer Source File for NUC472/442 MCU * * @note * Copyright (C) 2013~2015 Nuvoton Technology Corp. All rights reserved. *****************************************************************************/ #include "NUC472_442.h" #include <errno.h> #include "nu_miscutil.h" extern uint32_t __mbed_sbrk_start; extern uint32_t __mbed_krbs_start; #define NU_HEAP_ALIGN 32 /* Support heap with two-region model * * The default implementation of _sbrk() (in mbed_retarget.cpp) for GCC_ARM requires one-region * model (heap and stack share one region), which doesn't fit two-region model (heap and stack * are two distinct regions), e.g., stack in internal SRAM/heap in external SRAM on NUMAKER_PFM_NUC472. * Hence, override _sbrk() here to support heap with two-region model. */ void *_sbrk(int incr) { static uint32_t heap_ind = (uint32_t) &__mbed_sbrk_start; uint32_t heap_ind_old = NU_ALIGN_UP(heap_ind, NU_HEAP_ALIGN); uint32_t heap_ind_new = NU_ALIGN_UP(heap_ind_old + incr, NU_HEAP_ALIGN); if (heap_ind_new > (uint32_t) &__mbed_krbs_start) { errno = ENOMEM; return (void *) -1; } heap_ind = heap_ind_new; return (void *) heap_ind_old; }