用j-link的swd为啥下载不了呢

发布于 2020-04-10 13:14:15 浏览：2323 订阅该版

点击下载后出现下面的文本：

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D:\professional\RT-ThreadStudio>"D:/professional/RT-ThreadStudio/platform/SEGGER/JLink_V630i/JLink.exe" -device STM32F407VE -ExitOnError -CommanderScript D:\professional\RT-ThreadStudio\workspace/.metadata/Temp/rtthread_download_init.jlink 
SEGGER J-Link Commander V6.30i (Compiled Mar 23 2018 18:14:43)
DLL version V6.30i, compiled Mar 23 2018 18:14:24
J-Link Commander will now exit on Error
Script file read successfully.
Processing script file...
J-Link connection not established yet but required for command.
Connecting to J-Link via USB...O.K.
Firmware: J-Link OB-STM32F072-CortexM compiled May  4 2017 14:44:00
Hardware version: V1.00
S/N: -1
License(s): GDB, RDI, FlashBP, FlashDL, JFlash, RDDI
VTref = 3.300V
Selecting SWD as current target interface.
Device "STM32F407VE" selected.
Selecting 1000 kHz as target interface speed
Target connection not established yet but required for command.
Device "STM32F407VE" selected.
Connecting to target via SWD
Found SW-DP with ID 0x2BA01477
Found SW-DP with ID 0x2BA01477
Scanning AP map to find all available APs
AP[1]: Stopped AP scan as end of AP map has been reached
AP[0]: AHB-AP (IDR: 0x24770011)
Iterating through AP map to find AHB-AP to use
AP[0]: Core found
AP[0]: AHB-AP ROM base: 0xE00FF000
CPUID register: 0x410FC241. Implementer code: 0x41 (ARM)
Found Cortex-M4 r0p1, Little endian.
FPUnit: 6 code (BP) slots and 2 literal slots
CoreSight components:
ROMTbl[0] @ E00FF000
ROMTbl[0][0]: E000E000, CID: B105E00D, PID: 000BB00C SCS-M7
ROMTbl[0][1]: E0001000, CID: B105E00D, PID: 003BB002 DWT
ROMTbl[0][2]: E0002000, CID: B105E00D, PID: 002BB003 FPB
ROMTbl[0][3]: E0000000, CID: B105E00D, PID: 003BB001 ITM
ROMTbl[0][4]: E0040000, CID: B105900D, PID: 000BB9A1 TPIU
ROMTbl[0][5]: E0041000, CID: B105900D, PID: 000BB925 ETM
Cortex-M4 identified.
Reset delay: 0 ms
Reset type NORMAL: Resets core & peripherals via SYSRESETREQ & VECTRESET bit.
Reset: Halt core after reset via DEMCR.VC_CORERESET.
Reset: Reset device via AIRCR.SYSRESETREQ.
PC = 0800884C, CycleCnt = 00000000
R0 = 00000000, R1 = 00000000, R2 = 00000000, R3 = 00000000
R4 = 00000000, R5 = 00000000, R6 = 00000000, R7 = 00000000
R8 = 00000000, R9 = 00000000, R10= 00000000, R11= 00000000
R12= 00000000
SP(R13)= 200007A0, MSP= 200007A0, PSP= 00000000, R14(LR) = FFFFFFFF
XPSR = 01000000: APSR = nzcvq, EPSR = 01000000, IPSR = 000 (NoException)
CFBP = 00000000, CONTROL = 00, FAULTMASK = 00, BASEPRI = 00, PRIMASK = 00
FPS0 = 00000000, FPS1 = 00000000, FPS2 = 00000000, FPS3 = 00000000
FPS4 = 00000000, FPS5 = 00000000, FPS6 = 00000000, FPS7 = 00000000
FPS8 = 00000000, FPS9 = 00000000, FPS10= 00000000, FPS11= 00000000
FPS12= 00000000, FPS13= 00000000, FPS14= 00000000, FPS15= 00000000
FPS16= 00000000, FPS17= 00000000, FPS18= 00000000, FPS19= 00000000
FPS20= 00000000, FPS21= 00000000, FPS22= 00000000, FPS23= 00000000
FPS24= 00000000, FPS25= 00000000, FPS26= 00000000, FPS27= 00000000
FPS28= 00000000, FPS29= 00000000, FPS30= 00000000, FPS31= 00000000
FPSCR= 00000000
Downloading file [E: t-thread_file\test-thread\Debug tthread.bin]...
J-Link: Flash download: Bank 0 @ 0x08000000: Skipped. Contents already match
O.K.
Reset delay: 0 ms
Reset type NORMAL: Resets core & peripherals via SYSRESETREQ & VECTRESET bit.
Reset: Halt core after reset via DEMCR.VC_CORERESET.
Reset: Reset device via AIRCR.SYSRESETREQ.
Script processing completed.
执行完毕, 耗时：1036ms.

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但是用debug调试，程序可以下载进去，好奇怪。。换成keil mdk的download也没问题。。
是什么回事呢