STM32H743 网口调试

发布于 2020-05-29 15:39:41
参照网上帖子移植LWIP,网口还是没有调通,网上来求助,下边代码里__attribute__((section(".RxDecripSection")))),这个section需要在链接脚本里定义吗?该怎么写呢?
我对链接脚本不了解,用的是rtthread-stdio编译。


#elif defined ( __GNUC__ ) /* GNU Compiler */
#elif defined ( __GNUC__ ) /* GNU Compiler */

ETH_DMADescTypeDef DMARxDscrTab[ETH_RX_DESC_CNT] __attribute__((section(".RxDecripSection"))); /* Ethernet Rx DMA Descriptors */
ETH_DMADescTypeDef DMATxDscrTab[ETH_TX_DESC_CNT] __attribute__((section(".TxDecripSection"))); /* Ethernet Tx DMA Descriptors */
uint8_t Rx_Buff[ETH_RX_DESC_CNT][ETH_RX_BUFFER_SIZE] __attribute__((section(".RxArraySection"))); /* Ethernet Receive Buffers */


#endif



---------------------------------------------------------------------
/*
* linker script for STM32H743II with GNU ld
*/

/* Program Entry, set to mark it as "used" and avoid gc */
MEMORY
{
ROM (rx) : ORIGIN =0x8000000,LENGTH =2048k
RAM (rw) : ORIGIN =0x24000000,LENGTH =512k
}
ENTRY(Reset_Handler)
_system_stack_size = 0x200;

SECTIONS
{
.text :
{
. = ALIGN(4);
_stext = .;
KEEP(*(.isr_vector)) /* Startup code */

. = ALIGN(4);
*(.text) /* remaining code */
*(.text.*) /* remaining code */
*(.rodata) /* read-only data (constants) */
*(.rodata*)
*(.glue_7)
*(.glue_7t)
*(.gnu.linkonce.t*)

/* section information for finsh shell */
. = ALIGN(4);
__fsymtab_start = .;
KEEP(*(FSymTab))
__fsymtab_end = .;

. = ALIGN(4);
__vsymtab_start = .;
KEEP(*(VSymTab))
__vsymtab_end = .;

/* section information for utest */
. = ALIGN(4);
__rt_utest_tc_tab_start = .;
KEEP(*(UtestTcTab))
__rt_utest_tc_tab_end = .;

/* section information for at server */
. = ALIGN(4);
__rtatcmdtab_start = .;
KEEP(*(RtAtCmdTab))
__rtatcmdtab_end = .;
. = ALIGN(4);

/* section information for initial. */
. = ALIGN(4);
__rt_init_start = .;
KEEP(*(SORT(.rti_fn*)))
__rt_init_end = .;

. = ALIGN(4);

PROVIDE(__ctors_start__ = .);
KEEP (*(SORT(.init_array.*)))
KEEP (*(.init_array))
PROVIDE(__ctors_end__ = .);

. = ALIGN(4);

_etext = .;
} > ROM = 0

/* .ARM.exidx is sorted, so has to go in its own output section. */
__exidx_start = .;
.ARM.exidx :
{
*(.ARM.exidx* .gnu.linkonce.armexidx.*)

/* This is used by the startup in order to initialize the .data secion */
_sidata = .;
} > ROM
__exidx_end = .;

/* .data section which is used for initialized data */

.data : AT (_sidata)
{
. = ALIGN(4);
/* This is used by the startup in order to initialize the .data secion */
_sdata = . ;

*(.data)
*(.data.*)
*(.gnu.linkonce.d*)


PROVIDE(__dtors_start__ = .);
KEEP(*(SORT(.dtors.*)))
KEEP(*(.dtors))
PROVIDE(__dtors_end__ = .);

. = ALIGN(4);
/* This is used by the startup in order to initialize the .data secion */
_edata = . ;
} >RAM

.stack :
{
. = ALIGN(4);
_sstack = .;
. = . + _system_stack_size;
. = ALIGN(4);
_estack = .;
} >RAM

__bss_start = .;
.bss :
{
. = ALIGN(4);
/* This is used by the startup in order to initialize the .bss secion */
_sbss = .;

*(.bss)
*(.bss.*)
*(COMMON)

. = ALIGN(4);
/* This is used by the startup in order to initialize the .bss secion */
_ebss = . ;

*(.bss.init)
} > RAM
__bss_end = .;

_end = .;

/* Stabs debugging sections. */
.stab 0 : { *(.stab) }
.stabstr 0 : { *(.stabstr) }
.stab.excl 0 : { *(.stab.excl) }
.stab.exclstr 0 : { *(.stab.exclstr) }
.stab.index 0 : { *(.stab.index) }
.stab.indexstr 0 : { *(.stab.indexstr) }
.comment 0 : { *(.comment) }
/* DWARF debug sections.
* Symbols in the DWARF debugging sections are relative to the beginning
* of the section so we begin them at 0. */
/* DWARF 1 */
.debug 0 : { *(.debug) }
.line 0 : { *(.line) }
/* GNU DWARF 1 extensions */
.debug_srcinfo 0 : { *(.debug_srcinfo) }
.debug_sfnames 0 : { *(.debug_sfnames) }
/* DWARF 1.1 and DWARF 2 */
.debug_aranges 0 : { *(.debug_aranges) }
.debug_pubnames 0 : { *(.debug_pubnames) }
/* DWARF 2 */
.debug_info 0 : { *(.debug_info .gnu.linkonce.wi.*) }
.debug_abbrev 0 : { *(.debug_abbrev) }
.debug_line 0 : { *(.debug_line) }
.debug_frame 0 : { *(.debug_frame) }
.debug_str 0 : { *(.debug_str) }
.debug_loc 0 : { *(.debug_loc) }
.debug_macinfo 0 : { *(.debug_macinfo) }
/* SGI/MIPS DWARF 2 extensions */
.debug_weaknames 0 : { *(.debug_weaknames) }
.debug_funcnames 0 : { *(.debug_funcnames) }
.debug_typenames 0 : { *(.debug_typenames) }
.debug_varnames 0 : { *(.debug_varnames) }
}


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1 个回答
nongxiaoming
nongxiaoming 2020-06-01
要指定.RxDecripSection放在那个内存区域内而且要确保这个内存块以太网控制器是能访问到的。

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