程序无法下载:Error: Flash controller is busy

D:\vega\rv32m1_sdk_riscv\boards\rv32m1_vega>openocd -f rv32m1_ri5cy.cfg
Open On-Chip Debugger 0.10.0+dev-00433-g849f49ca (2019-01-04-07:48)
Licensed under GNU GPL v2
For bug reports, read
http://openocd.org/doc/doxygen/bugs.html
adapter speed: 100 kHz
srst_only separate srst_gates_jtag srst_open_drain connect_deassert_srst
Info : mohor tap selected
Info : adv debug unit selected
Info : Option 1 is passed to adv debug unit
Info : core 0 selected
Info : add flash_bank rv32m1 rv32m1.flash0
Info : add flash_bank rv32m1 rv32m1.flash1
Info : J-Link LPCXpresso V2 compiled Apr 4 2019 16:54:03
Info : Hardware version: 1.00
Info : VTarget = 3.300 V
Info : clock speed 100 kHz
Info : JTAG tap: rv32m1.cpu tap/device found: 0x249511c3 (mfg: 0x0e1 (Wintec Industries), part: 0x4951, ver: 0x2)
Info : adv debug unit is configured with option ADBG_USE_HISPEED
Info : Listening on port 3333 for gdb connections
Info : Listening on port 6666 for tcl connections
Info : Listening on port 4444 for telnet connections
Info : accepting ‘telnet’ connection on tcp/4444
D:/vega/rv32m1_sdk_riscv/boards/rv32m1_vega
Info : JTAG tap: rv32m1.cpu tap/device found: 0x249511c3 (mfg: 0x0e1 (Wintec Industries), part: 0x4951, ver: 0x2)
** Programming Started **
auto erase enabled
Info : Flash write discontinued at 0x00003092, next section at 0x000fff00
Error: Flash controller is busy
Error: failed erasing sectors 0 to 3
embedded:startup.tcl:477: Error: ** Programming Failed **
in procedure ‘program’
in procedure ‘program_error’ called at file “embedded:startup.tcl”, line 536
at file “embedded:startup.tcl”, line 477

看着都正常. 为什么无法下载?