SWD不能下载，JLINK可以下载求教

大幻想家 · 发表于 2019-9-23 13:15:25

自己做了个板子，用的是stm32f405，用jlink下载程序是正常的，但是用swd下载不行，一百次里有一次能下载成功，其他时候一直会报各种各样的错误

大幻想家 · 发表于 2019-9-23 13:15:26

BOOT0拉高烧录一次，然后再把boot0拉低，这种情况多数是由于误操作导致芯片被锁，另外尤其要注意烧录线接触不良的情况

大幻想家 · 发表于 2019-9-23 13:16:17

* JLink Info: STM32 (connect): Can not attach to CPU. Trying connect under reset.
* JLink Info: STM32 (connect): Can not attach to CPU. Trying connect under reset.
***JLink Error: STM32: Connecting to CPU via connect under reset failed.
Error: Flash Download failed - Target DLL has been cancelled
Flash Load finished at 13:11:14

大幻想家 · 发表于 2019-9-23 13:17:14

------------
Device: STM32F405RGTx
VTarget = 3.228V
State of Pins:
TCK: 0, TDI: 0, TDO: 0, TMS: 1, TRES: 1, TRST: 1
Hardware-Breakpoints: 6
Software-Breakpoints: 8192
Watchpoints: 4
JTAG speed: 50 kHz

**JLink Warning: T-bit of XPSR is 0 but should be 1. Changed to 1.
Erase Done.
**JLink Warning: Could not read memory location 0x20000000 when trying to set soft RAM BP
Cannot setup Breakpoint at Address
Programming Failed!
Error: Flash Download failed - "Cortex-M4"

大幻想家 · 发表于 2019-9-23 13:18:33

Contents missmatch at: 08010000H (Flash=FFH Required=03H) !
....................
Contents missmatch at: 08010064H (Flash=FFH Required=00H) !
Too many errors to display !