[问答]

STM32H743ZI DMA缓冲区无法访问0x2001FF0C区域咋办

问答对人有帮助，内容完整，我也想知道答案 0 嗨，大家好，我正在更改我的链接器文件，因为我最近发现我的 DMA 缓冲区位于 0x2001FF0C 区域，这是 DTCM（DMA 无法访问该区域）。我曾尝试将“RAM”更改为“RAM_D2”，但没有做任何事情。我改变它的唯一方法是将 DMA 缓冲区更改为静态，然后更改链接器，但我不希望它是静态的。我还注意到，每当我尝试将 new() 插入数组时更改任何链接器 .bss 或 .data 时，它现在都会出现硬故障。链接器文件： /* **************************************************************************** File : LinkerScript.ld Author : STM32CubeIDE Abstract : Linker script for STM32H7 series 2048Kbytes FLASH and 192Kbytes RAM Set heap size, stack size and stack location according to application requirements. Set memory bank area and size if external memory is used. Target : STMicroelectronics STM32 Distribution: The file is distributed as is, without any warranty of any kind. ************************************************************************* @attention Copyright (c) 2019 STMicroelectronics. All rights reserved. This software component is licensed by ST under BSD 3-Clause license, the "License"; You may not use this file except in compliance with the License. You may obtain a copy of the License at: opensource.org/licenses/BSD-3-Clause ************************************************************************** / / Entry Point / ENTRY(Reset_Handler) / Highest address of the user mode stack / _estack = 0x20020000; / end of RAM / / Generate a link error if heap and stack don't fit into RAM / _Min_Heap_Size = 0x200 ; / required amount of heap / _Min_Stack_Size = 0x400 ; / required amount of stack / / Specify the memory areas / MEMORY { FLASH (rx) : ORIGIN = 0x08000000, LENGTH = 2048K RAM (xrw) : ORIGIN = 0x20000000, LENGTH = 128K RAM_D1 (xrw) : ORIGIN = 0x24000000, LENGTH = 512K RAM_D2 (xrw) : ORIGIN = 0x30000000, LENGTH = 288K RAM_D3 (xrw) : ORIGIN = 0x38000000, LENGTH = 64K ITCMRAM (xrw) : ORIGIN = 0x00000000, LENGTH = 64K } / Define output sections / SECTIONS { / The startup code goes first into FLASH / .isr_vector : { . = ALIGN(4); KEEP((.isr_vector)) /* Startup code / . = ALIGN(4); } >FLASH / The program code and other data goes into FLASH / .text : { . = ALIGN(4); (.text) /* .text sections (code) / (.text) / .text* sections (code) / (.glue_7) /* glue arm to thumb code / (.glue_7t) /* glue thumb to arm code / (.eh_frame) KEEP ((.init)) KEEP ((.fini)) . = ALIGN(4); _etext = .; /* define a global symbols at end of code / } >FLASH / Constant data goes into FLASH / .rodata : { . = ALIGN(4); (.rodata) /* .rodata sections (constants, strings, etc.) / (.rodata) / .rodata* sections (constants, strings, etc.) / . = ALIGN(4); } >FLASH .ARM.extab : { (.ARM.extab* .gnu.linkonce.armextab.) } >FLASH .ARM : { __exidx_start = .; (.ARM.exidx) __exidx_end = .; } >FLASH .preinit_array : { PROVIDE_HIDDEN (__preinit_array_start = .); KEEP ((.preinit_array)) PROVIDE_HIDDEN (__preinit_array_end = .); } >FLASH .init_array : { PROVIDE_HIDDEN (__init_array_start = .); KEEP ((SORT(.init_array.))) KEEP ((.init_array)) PROVIDE_HIDDEN (__init_array_end = .); } >FLASH .fini_array : { PROVIDE_HIDDEN (__fini_array_start = .); KEEP ((SORT(.fini_array.))) KEEP ((.fini_array)) PROVIDE_HIDDEN (__fini_array_end = .); } >FLASH / used by the startup to initialize data / _sidata = LOADADDR(.data); / Initialized data sections goes into RAM, load LMA copy after code / .data : { . = ALIGN(4); _sdata = .; / create a global symbol at data start / (.data) /* .data sections / (.data) / .data* sections / (.RamFunc) /* .RamFunc sections / (.RamFunc) / .RamFunc* sections / . = ALIGN(4); _edata = .; / define a global symbol at data end / } >RAM AT> FLASH / Uninitialized data section / . = ALIGN(4); .bss : { / This is used by the startup in order to initialize the .bss secion / _sbss = .; / define a global symbol at bss start / __bss_start__ = _sbss; (.bss) (.bss) (COMMON) . = ALIGN(4); _ebss = .; / define a global symbol at bss end / __bss_end__ = _ebss; } >RAM / User_heap_stack section, used to check that there is enough RAM left / ._user_heap_stack : { . = ALIGN(8); PROVIDE ( end = . ); PROVIDE ( _end = . ); . = . + _Min_Heap_Size; . = . + _Min_Stack_Size; . = ALIGN(8); } >RAM / Remove information from the standard libraries / /DISCARD/ : { libc.a ( ) libm.a ( * ) libgcc.a ( * ) } .ARM.attributes 0 : { (.ARM.attributes) } } Where DMA buffer gets delcared / * CLI.h * * Created on: Sep 22, 2021 * Author: Chris / #ifndef TOOLS_CLI_CLI_H #define TOOLS_CLI_CLI_H #include #include "stm32h743xx.h" #include "../../Constants/projectConfigure.h" #include "../../Constants/functionReturnStates.h" #include "../../Drivers/STM32H7xx_HAL_Driver/Inc/stm32h7xx_ll_usart.h" #include "../../Drivers/STM32H7xx_HAL_Driver/Inc/stm32h7xx_ll_bus.h" #include "../../Drivers/STM32H7xx_HAL_Driver/Inc/stm32h7xx_ll_dma.h" #include "../../Drivers/STM32H7xx_HAL_Driver/Inc/stm32h7xx_ll_gpio.h" #include "CMD/CMD.h" class CLI { private: char CLI_TxBuff[CLI_buffLength] = {0}; char CLI_RxBuff[CLI_buffLength] = {0}; uint32_t baudRate; void enableTx(); public: CLI(); void execute(CMD CMDs, char * CLI_TxBuff); char * getCLITxBuff(void); }; #endif /* TOOLS_CLI_CLI_H_ */ 0
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答案对人有帮助，有参考价值 0 将“>RAM”的所有三个实例替换为“>RAM_D1”并将_estack 定义更改为“_estack = ORIGIN(RAM_D1) + LENGTH(RAM_D1);”

2022-12-23 10:27:31 评论举报 tijing忽忽