问题：调试器无法下载程序、无法调试、无法切换启动核心

Problem: The debugger can’t not download the program, Debug, or change the start-up core

（一）初步怀疑问题症结

Sec.1 Guess the reason in now step

参考第三节，执行openocd命令时，出现的错误提示，提示openocd.cfg文件找不大奥。

Refer for the Sec.3, when I implement the command “openocd”, there is something wrong exist, it refer that the file “openocd.cfg” is no where to found.

（二）目前为止的操作

Sec.2 operate i make so far

1、参考“织女星开发板调试器升级为jlink固件”，使用LPCScrypt2.1.0842\scripts\program_JLINK.cmd对固件进行升级。

Refer to “织女星开发板调试器升级为Jlink固件”, I update the firework with program_JLINK.cmd.

2、使用UsbDriverTool.exe，把J-Link driver变成J-Link driver (WinUSB)

Use UsbDriverTool.exe, and change the “J-Link driver” into “J-Link driver (WinUSB)”

3、使用openocd.exe输入openocd命令，显示错误如第三节1、所示。该环境根据《手把手教你搭建织女星开发板RISC-V开发环境》搭建，源文件下载于上述帖子的百度云。在出现问题后，我在官方给出的地址（一个链接到github的地址下载了最新的Toolchain_Windows.zip），但依然出现上述问题。

Toolchain_Windows.zip的github地址：Toolchain_Windows.zip

Usb the openocd.exe to implement the command “openocd”, and the error display as Sec.3-1. the environment is develop according to “<u>手把手教你搭建织女星开发板RISC-V开发环境</u>”, the source file is download from baiduyun. After Come across the problem, i try to usb the file download from github to take place (i download the Toolchain_Windows.zip frome github), but it is not usb.

4、此外，通过openocd -f rv32m1_ri5cy.cfg命令连接芯片，准备修改启动核心时；或者通过搭建好的eclipse环境下载程序时，都出现错误。如第三节2、所示。

Beside, both connect the chip with command “openocd -f rv32m1_ri5cy.cfg” (ready to change the start-up core”, or download the program with eclipse environment, something wrong still exist, and i place it in Sec.3-2.

5、我使用的是win7 64位系统。我怀疑过是系统支持问题，因此换为同事win8 64位系统再次尝试，但依然无果。

I use win7 64, and also try in win8 64 of my workmate, but nothing different.

（三）错误提示

Sec.3 error display

1、

F:\study\VEGA_Board\IDE\eclipse\GNU MCU Eclipse\openocd\bin>openocd
Open On-Chip Debugger 0.10.0+dev-00433-g849f49ca (2019-01-04-07:48)
Licensed under GNU GPL v2
For bug reports, read
http://openocd.org/doc/doxygen/bugs.html
embedded:startup.tcl:60: Error: Can’t find openocd.cfg
in procedure ‘script’
at file “embedded:startup.tcl”, line 60
Info : Listening on port 6666 for tcl connections
Info : Listening on port 4444 for telnet connections
Error: Debug Adapter has to be specified, see “interface” command
embedded:startup.tcl:60: Error:
in procedure ‘script’
at file “embedded:startup.tcl”, line 60

2、

F:\study\VEGA_Board\IDE\eclipse\GNU MCU Eclipse\Boot_Config>openocd -f rv32m1_ri
5cy.cfg
Open On-Chip Debugger 0.10.0+dev-00433-g849f49ca (2019-01-04-07:48)
Licensed under GNU GPL v2
For bug reports, read
http://openocd.org/doc/doxygen/bugs.html
adapter speed: 1000 kHz
srst_only separate srst_gates_jtag srst_open_drain connect_deassert_srst
Info : mohor tap selected
Info : adv debug unit selected
Info : Option 1 is passed to adv debug unit
Info : core 0 selected
Info : add flash_bank rv32m1 rv32m1.flash0
Info : add flash_bank rv32m1 rv32m1.flash1
Info : J-Link LPCXpresso V2 compiled Sep 23 2016 12:14:15
Info : Hardware version: 1.00
Info : VTarget = 3.300 V
Info : clock speed 1000 kHz
Error: JTAG scan chain interrogation failed: all ones
Error: Check JTAG interface, timings, target power, etc.
Error: Trying to use configured scan chain anyway…
Error: rv32m1.cpu: IR capture error; saw 0x0f not 0x01
Warn : Bypassing JTAG setup events due to errors

Warn : Bypassing JTAG setup events due to errors
Info : adv debug unit is configured with option ADBG_USE_HISPEED
Warn : CRC ERROR! Computed 0x00000000, read CRC 0xffffffff
Warn : CRC ERROR! Computed 0x00000000, read CRC 0xffffffff
Warn : CRC ERROR! Computed 0x00000000, read CRC 0xffffffff
Error: Burst read failed
Error: Couldn’t read the CPU state
Warn : CRC ERROR! Computed 0x00000000, read CRC 0xffffffff
Warn : CRC ERROR! Computed 0x00000000, read CRC 0xffffffff
Warn : CRC ERROR! Computed 0x00000000, read CRC 0xffffffff
Error: Burst read failed
Warn : Debug IF CPU control reg read failure.
Warn : Resetting JTAG TAP state and reconnectiong to debug IF.
Info : adv debug unit is configured with option ADBG_USE_HISPEED
Warn : …attempt 1 of 5
Warn : CRC ERROR! Computed 0x00000000, read CRC 0xffffffff
Warn : CRC ERROR! Computed 0x00000000, read CRC 0xffffffff
Warn : CRC ERROR! Computed 0x00000000, read CRC 0xffffffff
Error: Burst read failed
Warn : Debug IF CPU control reg read failure.
Warn : Resetting JTAG TAP state and reconnectiong to debug IF.
Info : adv debug unit is configured with option ADBG_USE_HISPEED
Warn : …attempt 2 of 5
Warn : CRC ERROR! Computed 0x00000000, read CRC 0xffffffff
Warn : CRC ERROR! Computed 0x00000000, read CRC 0xffffffff
Warn : CRC ERROR! Computed 0x00000000, read CRC 0xffffffff
Error: Burst read failed
Warn : Debug IF CPU control reg read failure.
Warn : Resetting JTAG TAP state and reconnectiong to debug IF.
Info : adv debug unit is configured with option ADBG_USE_HISPEED
Warn : …attempt 3 of 5
Warn : CRC ERROR! Computed 0x00000000, read CRC 0xffffffff
Warn : CRC ERROR! Computed 0x00000000, read CRC 0xffffffff
Warn : CRC ERROR! Computed 0x00000000, read CRC 0xffffffff
Error: Burst read failed
Warn : Debug IF CPU control reg read failure.
Warn : Resetting JTAG TAP state and reconnectiong to debug IF.
Info : adv debug unit is configured with option ADBG_USE_HISPEED
Warn : …attempt 4 of 5
Warn : CRC ERROR! Computed 0x00000000, read CRC 0xffffffff
Warn : CRC ERROR! Computed 0x00000000, read CRC 0xffffffff
Warn : CRC ERROR! Computed 0x00000000, read CRC 0xffffffff
Error: Burst read failed
Warn : Debug IF CPU control reg read failure.
Warn : Resetting JTAG TAP state and reconnectiong to debug IF.
Info : adv debug unit is configured with option ADBG_USE_HISPEED
Warn : …attempt 5 of 5
Error: Could not re-establish communication with target
Error: Error while calling rv32m1_is_cpu_running
Polling target rv32m1.cpu failed, trying to reexamine
Warn : CRC ERROR! Computed 0x00000000, read CRC 0xffffffff
Warn : CRC ERROR! Computed 0x00000000, read CRC 0xffffffff
Warn : CRC ERROR! Computed 0x00000000, read CRC 0xffffffff
Error: Burst read failed
Error: Couldn’t read the CPU state
Examination failed, GDB will be halted. Polling again in 100ms
Warn : CRC ERROR! Computed 0x00000000, read CRC 0xffffffff
Warn : CRC ERROR! Computed 0x00000000, read CRC 0xffffffff
Warn : CRC ERROR! Computed 0x00000000, read CRC 0xffffffff
Error: Burst read failed
Warn : Debug IF CPU control reg read failure.
Warn : Resetting JTAG TAP state and reconnectiong to debug IF.
Info : adv debug unit is configured with option ADBG_USE_HISPEED
Warn : …attempt 1 of 5
Warn : CRC ERROR! Computed 0x00000000, read CRC 0xffffffff
Warn : CRC ERROR! Computed 0x00000000, read CRC 0xffffffff
Warn : CRC ERROR! Computed 0x00000000, read CRC 0xffffffff
Error: Burst read failed
Warn : Debug IF CPU control reg read failure.
Warn : Resetting JTAG TAP state and reconnectiong to debug IF.
Info : adv debug unit is configured with option ADBG_USE_HISPEED
Warn : …attempt 2 of 5
Warn : CRC ERROR! Computed 0x00000000, read CRC 0xffffffff
Warn : CRC ERROR! Computed 0x00000000, read CRC 0xffffffff
Warn : CRC ERROR! Computed 0x00000000, read CRC 0xffffffff
Error: Burst read failed
Warn : Debug IF CPU control reg read failure.
Warn : Resetting JTAG TAP state and reconnectiong to debug IF.
Info : adv debug unit is configured with option ADBG_USE_HISPEED
Warn : …attempt 3 of 5
Warn : CRC ERROR! Computed 0x00000000, read CRC 0xffffffff
Warn : CRC ERROR! Computed 0x00000000, read CRC 0xffffffff
Warn : CRC ERROR! Computed 0x00000000, read CRC 0xffffffff
Error: Burst read failed
Warn : Debug IF CPU control reg read failure.
Warn : Resetting JTAG TAP state and reconnectiong to debug IF.
Info : adv debug unit is configured with option ADBG_USE_HISPEED
Warn : …attempt 4 of 5
Warn : CRC ERROR! Computed 0x00000000, read CRC 0xffffffff
Warn : CRC ERROR! Computed 0x00000000, read CRC 0xffffffff
Warn : CRC ERROR! Computed 0x00000000, read CRC 0xffffffff
Error: Burst read failed
Warn : Debug IF CPU control reg read failure.
Warn : Resetting JTAG TAP state and reconnectiong to debug IF.
Info : adv debug unit is configured with option ADBG_USE_HISPEED
Warn : …attempt 5 of 5
Error: Could not re-establish communication with target
Error: Error while calling rv32m1_is_cpu_running
Polling target rv32m1.cpu failed, trying to reexamine
Warn : CRC ERROR! Computed 0x00000000, read CRC 0xffffffff
Warn : CRC ERROR! Computed 0x00000000, read CRC 0xffffffff
Warn : CRC ERROR! Computed 0x00000000, read CRC 0xffffffff
Error: Burst read failed
Error: Couldn’t read the CPU state
Examination failed, GDB will be halted. Polling again in 300ms