Question

我有新的STM32 L1发现板，它似乎被破坏了。但我不完全确定。

通过USB将板连接到Linux机器时，板启动完全没问题，演示工作正如供应商所述。

但我无法真正连接到这个主板。

➜ lsusb -s 002:074
Bus 002 Device 074: ID 0483:3748 STMicroelectronics ST-LINK/V2

Board似乎已连接，在ST-LINK和DISCOVERY之间切换的大跳线（CN3）设置为DISCOVERY。但是当我尝试使用st-link实用程序时我收到了。

➜  stlink git:(master) ./st-flash --reset erase
libusb_handle_events() timeout
[!] send_recv
libusb_submit_transfer(-6)
[!] send_recv
libusb_submit_transfer(-6)
[!] send_recv
libusb_submit_transfer(-6)
[!] send_recv
libusb_submit_transfer(-6)
[!] send_recv
2015-12-25T19:24:57 INFO src/stlink-common.c: Loading device parameters....
libusb_submit_transfer(-6)
[!] send_recv
libusb_submit_transfer(-6)
[!] send_recv
libusb_submit_transfer(-6)
[!] send_recv
2015-12-25T19:24:57 WARN src/stlink-common.c: unknown chip id! 0
fish: Job 1, './st-flash --reset erase' terminated by signal SIGSEGV (Address boundary error)

OpenOCD也无法与主板通话。

openocd -f board/stm32ldiscovery.cfg
Open On-Chip Debugger 0.9.0 (2015-12-25-18:43)
Licensed under GNU GPL v2
For bug reports, read
     http://openocd.org/doc/doxygen/bugs.html
adapter speed: 300 kHz
adapter_nsrst_delay: 100
Info : The selected transport took over low-level target control. The results might differ compared to plain JTAG/SWD
none separate
srst_only separate srst_nogate srst_open_drain connect_deassert_srst
Info : Unable to match requested speed 300 kHz, using 240 kHz
Info : Unable to match requested speed 300 kHz, using 240 kHz
Info : clock speed 240 kHz
Error: reset device failed
in procedure 'init' 
in procedure 'ocd_bouncer'

板上芯片是STM32L152RCT6。之前我曾经使用过STM32F0..4并且从未遇到过这样的问题，但我之前没有使用过L系列，所以我不确定这是否是主板问题，或者我在这里跳过重要的事情。

编辑：使用OpenOCD我发现不是预期的行为。第一次运行时，我收到错误：

Error: init mode failed (unable to connect to the target)

第二轮：

Error: reset device failed

然后设备从系统中消失，dmesg会留言：

[ 1336.080239] usb 2-1.1: reset full-speed USB device number 4 using ehci-pci
[ 1336.154250] usb 2-1.1: device descriptor read/64, error -32
[ 1336.329341] usb 2-1.1: device descriptor read/64, error -32
[ 1336.503334] usb 2-1.1: reset full-speed USB device number 4 using ehci-pci
[ 1336.566330] usb 2-1.1: device descriptor read/64, error -32
[ 1336.741385] usb 2-1.1: device descriptor read/64, error -32
[ 1336.915427] usb 2-1.1: reset full-speed USB device number 4 using ehci-pci
[ 1337.317517] usb 2-1.1: device not accepting address 4, error -32
[ 1337.390532] usb 2-1.1: reset full-speed USB device number 4 using ehci-pci
[ 1337.792623] usb 2-1.1: device not accepting address 4, error -32
[ 1337.793110] usb 2-1.1: USB disconnect, device number 4
[ 1337.855642] usb 2-1.1: new full-speed USB device number 5 using ehci-pci
[ 1337.918651] usb 2-1.1: device descriptor read/64, error -32
[ 1338.093691] usb 2-1.1: device descriptor read/64, error -32
[ 1338.267730] usb 2-1.1: new full-speed USB device number 6 using ehci-pci
[ 1338.330727] usb 2-1.1: device descriptor read/64, error -32
[ 1338.505783] usb 2-1.1: device descriptor read/64, error -32
[ 1338.679823] usb 2-1.1: new full-speed USB device number 7 using ehci-pci
[ 1339.081921] usb 2-1.1: device not accepting address 7, error -32
[ 1339.154935] usb 2-1.1: new full-speed USB device number 8 using ehci-pci
[ 1339.557024] usb 2-1.1: device not accepting address 8, error -32
[ 1339.557168] usb 2-1-port1: unable to enumerate USB device

我认为适配器速度可能存在问题，但我现在还不确定。

EDIT2：我尝试使用Windows ST Link Utility并且无法连接到主板，导致“检测错误”或“连接错误”，软件建议更改SWD频率或模式。我完全厌倦了每一个组合，但都没有效果。

EDIT3：如果这有助于某人，董事会被送回，我得到的信息实际上已经破了，我有新的。新的一个完美无瑕地运作。

Answer 1

有时我在GNU / Linux上使用相同的L1 Discovery板。 texane/stlink和OpenOCD都可以完美无缺地检测到它。你可以看到输出：

$ st-util 
2016-01-08T21:55:59 INFO src/stlink-common.c: Loading device parameters....
2016-01-08T21:55:59 INFO src/stlink-common.c: Device connected is: L1 Med-density device, id 0x10186416
2016-01-08T21:55:59 INFO src/stlink-common.c: SRAM size: 0x4000 bytes (16 KiB), Flash: 0x20000 bytes (128 KiB) in pages of 256 bytes
2016-01-08T21:55:59 INFO gdbserver/gdb-server.c: Chip ID is 00000416, Core ID is  2ba01477.
2016-01-08T21:55:59 INFO gdbserver/gdb-server.c: Target voltage is 2917 mV.
2016-01-08T21:55:59 INFO gdbserver/gdb-server.c: Listening at *:4242...
$ openocd -f board/stm32ldiscovery.cfg 
GNU ARM Eclipse 64-bits Open On-Chip Debugger 0.10.0-dev-00141-g09aeb96-dirty (2015-10-28-11:56)
Licensed under GNU GPL v2
For bug reports, read
http://openocd.org/doc/doxygen/bugs.html
adapter speed: 300 kHz
adapter_nsrst_delay: 100
Info : The selected transport took over low-level target control. The    results might differ compared to plain JTAG/SWD
none separate
srst_only separate srst_nogate srst_open_drain connect_deassert_srst
Info : Unable to match requested speed 300 kHz, using 240 kHz
Info : Unable to match requested speed 300 kHz, using 240 kHz
Info : clock speed 240 kHz
Info : STLINK v2 JTAG v25 API v2 SWIM v0 VID 0x0483 PID 0x3748
Info : using stlink api v2
Info : Target voltage: 2.913980
Info : stm32l1.cpu: hardware has 6 breakpoints, 4 watchpoints

也许你的电路板真的坏了但在回收之前我建议你进行两次不同的试验。（a）我想在你的问题之后你可能有另一个ST（如你提到的STM32F0..4）板可能带有ST-LINK适配器。您可以将其用作外部ST-LINK（请遵循例如this）。（b）尝试使用STSW-LINK005升级嵌入式ST-LINK固件，该版本也适用于GNU / Linux环境中的java版本。在升级之前和之后，该板对我来说都很好。

无法运行STM32 L1发现板

1 个答案: