淘宝上买的STM32F103C8T6核心板，无法正常下载

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CC4 提问时间：2017-6-8 21:16 /

在淘宝买了个核心板，https://item.taobao.com/item.htm ... 0&_u=8bavat8eea下载时需要按着RESET不放，然后点下载，松开后即可成功下载。否则，无法下载成功。

Info : clock speed 4000 kHz

Info : STLINK v2 JTAG v27 API v2 SWIM v6 VID 0x0483 PID 0x3748

Info : vid/pid are not identical: 0x0483/0x374B 0x0483/0x3748

Info : using stlink api v2

Info : Target voltage: 3.312064

Info : STM32F103C8Tx.cpu: hardware has 6 breakpoints, 4 watchpoints

Error: timed out while waiting for target halted

TARGET: STM32F103C8Tx.cpu - Not halted

in procedure 'program'

in procedure 'reset' called at file "embedded:startup.tcl", line 478

in procedure 'ocd_bouncer'

** Unable to reset target **

shutdown command invoked

如果按着RESET，点下载，然后再松开，则会有下面的提示过程：

Info : clock speed 4000 kHz

Info : STLINK v2 JTAG v27 API v2 SWIM v6 VID 0x0483 PID 0x3748

Info : vid/pid are not identical: 0x0483/0x374B 0x0483/0x3748

Info : using stlink api v2

Info : Target voltage: 3.312064

Info : STM32F103C8Tx.cpu: hardware has 6 breakpoints, 4 watchpoints

STM32F103C8Tx.cpu: target state: halted

target halted due to debug-request, current mode: Thread

xPSR: 0x01000000 pc: 0x08001058 msp: 0x20005000

** Programming Started **

auto erase enabled

Info : device id = 0x20036410

Info : flash size = 64kbytes

STM32F103C8Tx.cpu: target state: halted

target halted due to breakpoint, current mode: Thread

xPSR: 0x61000000 pc: 0x2000003a msp: 0x20005000

wrote 5120 bytes from file Debug/c8t6spi.elf in 0.329144s (15.191 KiB/s)

** Programming Finished **

** Verify Started **

STM32F103C8Tx.cpu: target state: halted

target halted due to breakpoint, current mode: Thread

xPSR: 0x61000000 pc: 0x2000002e msp: 0x20005000

verified 4432 bytes in 0.085779s (50.457 KiB/s)

** Verified OK **

shutdown command invoked

赞收藏 1 评论33 发布时间：2017-6-8 21:16

33个回答

shaoziyang 回答时间：2017-6-9 08:56:16

不需要吧，要么是BOOT0/1的选择不对，要么就是程序中占用了SWD接口，还有一种可能是进入了休眠模式。

赞 3 评论

七哥回答时间：2017-6-15 16:21:55

本帖最后由 toofree 于 2017-6-15 16:23 编辑

这个是复位方式设置问题

我在keil下用ulink下载的时候，刚开始也是要按住复位，点下载，马上松开才能下载成功。
但是同事用jlink就好用，所以很纳闷。后了经测试，是我的复位方式有问题。

复位方式一共有4种，Auto detect、HW RESET、SYSRESETREQ、VECTRESET。
没有硬件复位信号的情况下，要选择SYSRESETREQ才可以。具体在你的环境下，选项在哪不清楚，但是这几种方式应该是有的吧。

这四个选项的定义：

Reset — HW RESET performs a hardware reset by asserting the hardware reset (HW RESET) signal.
Reset — SYSRESETREQ performs a software reset by setting the SYSRESETREQ bit. The Cortex-M core and on-chip peripherals are reset.
Reset — VECTRESET performs a software reset by setting the VECTRESET bit. Only the Cortex-M core is reset. The on-chip peripherals are not affected. For some Cortex-M devices, VECTRESET is the only way to reset the core. VECTRESET is not supported on Cortex-M0 and Cortex-M1 cores.
Reset — Autodetect selects one of the above reset methods based on the target device. The SYSRESETREQ method is used if an unknown device is detected.

HW RESET意思就是硬件复位，SYSRESETREQ就是只给M内核和片上外设复位，VECTRSET就是只给M核复位。Auto detect就是自动选择上面的三个中的一个复位。