stm32cubeide debug 显示GDB closed TCP/IP connection
使用stm32cubeide 编写一个简单的跑马灯程序，直接卡在了本地gdb调试那里SEGGER J-Link GDB Server V6.44c Command Line Version
JLinkARM.dll V6.44c (DLL compiled Mar 22 2019 17:26:40)
Command line: -port 2331 -s -device STM32F407ZG -endian little -speed 500 -vd
-----GDB Server start settings-----
GDBInit file: none
GDB Server Listening port: 2331
SWO raw output listening port: 2332
Terminal I/O port: 2333
Accept remote connection: localhost only
Generate logfile: off
Verify download: on
Init regs on start: off
Silent mode: off
Single run mode: on
Target connection timeout: 0 ms
------J-Link related settings------
J-Link Host interface: USB
J-Link script: none
J-Link settings file: none
------Target related settings------
Target device: STM32F407ZG
Target interface: JTAG
Target interface speed: 500kHz
Target endian: little
Connecting to J-Link...
J-Link is connected.
Firmware: J-Link ARM V8 compiled Nov 28 2014 13:44:46
Hardware: V8.00
S/N: 17935099
Feature(s): RDI,FlashDL,FlashBP,JFlash
Checking target voltage...
Target voltage: 3.31 V
Listening on TCP/IP port 2331
Connecting to target...
J-Link found 2 JTAG devices, Total IRLen = 9
JTAG ID: 0x4BA00477 (Cortex-M4)
Connected to target
Waiting for GDB connection...Connected to 127.0.0.1
Reading all registers
Read 4 bytes @ address 0x08000878 (Data = 0x0201F000)
Read 2 bytes @ address 0x08000878 (Data = 0xF000)
Connected to 127.0.0.1
Reading all registers
Read 4 bytes @ address 0x08000878 (Data = 0x0201F000)
Read 4 bytes @ address 0x080008D2 (Data = 0x0016BD70)
Reading 64 bytes @ address 0x00000000
GDB closed TCP/IP connection
J-Link found 2 JTAG devices, Total IRLen = 9
JTAG ID: 0x4BA00477 (Cortex-M4)
Connected to target
Waiting for GDB connection...Connected to 127.0.0.1
Reading all registers
Read 4 bytes @ address 0x08000878 (Data = 0x0201F000)
Read 2 bytes @ address 0x08000878 (Data = 0xF000)
Connected to 127.0.0.1
Reading all registers
Read 4 bytes @ address 0x08000878 (Data = 0x0201F000)
Read 4 bytes @ address 0x080008D2 (Data = 0x0016BD70)
Reading 64 bytes @ address 0x00000000
GDB closed TCP/IP connection
从这里看出，你的j_link找到两个设备，一个是通过TCP/IP连接的，一个是硬件连接，127.0.0.1看看这个IP是什么，连接了什么东西
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