SWD四线模式下载失败的问题，求解

feat0506 · 发表于 2020-1-3 17:22:03

如图所示，是我的SWD电路和复位电路
TIM截图20200103170248.png

第一次下载成功，但是后面下载一直报错如下：
JLink info:
------------
DLL: V4.92 , compiled Sep 30 2014 09:33:42
Firmware: J-Link ARM-OB STM32 compiled Aug 22 2012 19:52:04
Hardware: V7.00
S/N : 20090928
Feature(s) : RDI,FlashDL,FlashBP,JFlash,GDBFull

* JLink Info: Found SWD-DP with ID 0x1BA01477
* JLink Info: Found SWD-DP with ID 0x1BA01477
* JLink Info: Found Cortex-M3 r1p1, Little endian.
* JLink Info: FPUnit: 6 code (BP) slots and 2 literal slots
* JLink Info: TPIU fitted.
* JLink Info: ETM fitted.
ROMTableAddr = 0xE00FF003
**JLink Warning: Could not set S_RESET_ST

Target info:
------------
Device: STM32F103RC
VTarget = 3.300V
State of Pins:
TCK: 0, TDI: 0, TDO: 1, TMS: 0, TRES: 1, TRST: 1
Hardware-Breakpoints: 6
Software-Breakpoints: 8192
Watchpoints:       4
JTAG speed: 1000 kHz

Erase Done.
Programming Failed!
Error: Flash Download failed  -  "Cortex-M3"
Flash Load finished at 16:11:43

后来按照网上的方法，取消勾选reset and run后，下载时快速按一下复位键，显示如下：
JLink info:
------------
DLL: V4.92 , compiled Sep 30 2014 09:33:42
Firmware: J-Link ARM-OB STM32 compiled Aug 22 2012 19:52:04
Hardware: V7.00
S/N : 20090928
Feature(s) : RDI,FlashDL,FlashBP,JFlash,GDBFull

* JLink Info: Found SWD-DP with ID 0x1BA01477
* JLink Info: Found SWD-DP with ID 0x1BA01477
* JLink Info: Found Cortex-M3 r1p1, Little endian.
* JLink Info: FPUnit: 6 code (BP) slots and 2 literal slots
* JLink Info: TPIU fitted.
* JLink Info: ETM fitted.
ROMTableAddr = 0xE00FF003
**JLink Warning: S_RESET_ST not cleared
**JLink Warning: CPU did not halt after reset.
**JLink Warning: CPU could not be halted
* JLink Info: Core did not halt after reset, trying to disable WDT.
**JLink Warning: CPU did not halt after reset.
**JLink Warning: CPU could not be halted
**JLink Warning: S_RESET_ST not cleared
* JLink Info: Found SWD-DP with ID 0x1BA01477
* JLink Info: Found Cortex-M3 r1p1, Little endian.

Target info:
------------
Device: STM32F103RC
VTarget = 3.300V
State of Pins:
TCK: 0, TDI: 0, TDO: 1, TMS: 0, TRES: 1, TRST: 1
Hardware-Breakpoints: 6
Software-Breakpoints: 8192
Watchpoints:       4
JTAG speed: 1000 kHz

Erase Done.
Programming Done.
Verify OK.
Flash Load finished at 16:06:48

这样是否下载成功了？造成这样的原因是什么？怎么解决，求助