[参考译文] TM4C123GH6PM：printf ()不起作用！！！

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https://e2e.ti.com/support/microcontrollers/arm-based-microcontrollers-group/arm-based-microcontrollers/f/arm-based-microcontrollers-forum/1430291/tm4c123gh6pm-printf-does-not-work

器件型号：TM4C123GH6PM

工具与软件：

大家好、

我有一个非常令人沮丧的简单问题。 printf()不起作用！！！

我有两个项目、项目_A 和项目_B 我希望 PROJECT_A printf()起作用并将文本发送到控制台。

源文件相同、

//This does not work.

#include <stdio.h>

int main(void) {
    printf("Hello");
    fflush (stdout);
    printf(" World!");
    fflush (stdout);

    return 0;
}

//This does work.

#include <stdio.h>

int main(void) {
	printf("Hello");
	fflush (stdout);
	printf(" World!");
	fflush (stdout);
	
	return 0;
}

链接器命令文件是相同的、

/******************************************************************************
 *
 * Default Linker Command file for the Texas Instruments TM4C123GH6PM
 *
 * This is derived from revision 15071 of the TivaWare Library.
 *
 *****************************************************************************/
//This does not work.
--retain=g_pfnVectors

MEMORY
{
    FLASH (RX) : origin = 0x00000000, length = 0x00040000
    SRAM (RWX) : origin = 0x20000000, length = 0x00008000
}

/* The following command line options are set as part of the CCS project.    */
/* If you are building using the command line, or for some reason want to    */
/* define them here, you can uncomment and modify these lines as needed.     */
/* If you are using CCS for building, it is probably better to make any such */
/* modifications in your CCS project and leave this file alone.              */
/*                                                                           */
/* --heap_size=0                                                             */
/* --stack_size=256                                                          */
/* --library=rtsv7M4_T_le_eabi.lib                                           */

/* Section allocation in memory */

SECTIONS
{
    .intvecs:   > 0x00000000
    .text   :   > FLASH
    .const  :   > FLASH
    .cinit  :   > FLASH
    .pinit  :   > FLASH
    .init_array : > FLASH

    .vtable :   > 0x20000000
    .data   :   > SRAM
    .bss    :   > SRAM
    .sysmem :   > SRAM
    .stack  :   > SRAM
}

__STACK_TOP = __stack + 512;

/******************************************************************************
 *
 * Default Linker Command file for the Texas Instruments TM4C123GH6PM
 *
 * This is derived from revision 15071 of the TivaWare Library.
 *
 *****************************************************************************/
//This does work.
--retain=g_pfnVectors

MEMORY
{
    FLASH (RX) : origin = 0x00000000, length = 0x00040000
    SRAM (RWX) : origin = 0x20000000, length = 0x00008000
}

/* The following command line options are set as part of the CCS project.    */
/* If you are building using the command line, or for some reason want to    */
/* define them here, you can uncomment and modify these lines as needed.     */
/* If you are using CCS for building, it is probably better to make any such */
/* modifications in your CCS project and leave this file alone.              */
/*                                                                           */
/* --heap_size=0                                                             */
/* --stack_size=256                                                          */
/* --library=rtsv7M4_T_le_eabi.lib                                           */

/* Section allocation in memory */

SECTIONS
{
    .intvecs:   > 0x00000000
    .text   :   > FLASH
    .const  :   > FLASH
    .cinit  :   > FLASH
    .pinit  :   > FLASH
    .init_array : > FLASH

    .vtable :   > 0x20000000
    .data   :   > SRAM
    .bss    :   > SRAM
    .sysmem :   > SRAM
    .stack  :   > SRAM
}

__STACK_TOP = __stack + 512;

我已经尝试使项目设置尽可能匹配。

这些项目随附在后。

谢谢！

解决了

e2e.ti.com/.../printf.zip

1 年多前