J-Link cannot connect to the CPU - SEGGER Knowledge Base There are many different scenarios, which may prevent the J-Link from establishing a successful connection to the target device The following article refers to the different scenarios and provides information on how to troubleshoot and in the next step how to fix them
J-Link无法连接芯片的常见解决办法 - 知乎 在某些情况下， J-Link Flasher仿真器 可能无法与芯片正确连接，而导致在IDE中调试失败，出现例如“Failed to get CPU status after 4 retries”的报错信息，无法获取芯片的状态，可能是由于J-Link未与芯片成功连接导致的。
[SOLVED] - IAR Workbench, cannot connect to J-Link Essentially, if you can set a breakpoint and control the flow of code execution using the J-Link, then you have the C-Spy features of the IAR workbench installed
Solved: Cant connect to J-Link debugger Nucleo 466 . . . I'm trying to run debug my code on a Nucleo with STM32F466 via the SWD interface using a J-Link debugger Unfortunately this always ends up with a message Could not connect to target Please check power, connection and settings
Solved: Re: S32K344 with Jlink SWD debug, cannot connect . . . When the MCU crashes, it does not enter the error interrupt to print backtrace information, nor can it be connected by Jink, causing me to be unable to view the PC value and stack content at the time of the crash
AT Host FAILED: Cannot connect to J-Link. - Nordic Q A . . . AT Host J-Link Command File read successfully AT Host Processing script file AT Host J-Link connection not established yet but required for command AT Host Connecting to J-Link via USB AT Host FAILED: Cannot connect to J-Link AT Host J-Link connection not established yet but required for command AT Host Connecting to J-Link via USB