Unable to flash code onto DA14580 from Keil

Hello,

我试图上传作品DA1示例代码4580, but Keil's uVision is producing the following error:

*** Using Compiler 'V5.06 update 4 (build 422)', folder: 'C:\Keil_v5\ARM\ARMCC\Bin'
Build target 'BLINKY'
compiling common_uart.c...
compiling main.c...
compiling periph_setup.c...
compiling gpio.c...
linking...
Program Size: Code=5168 RO-data=176 RW-data=0 ZI-data=916
FromELF: creating hex file...
".\out\blinky.axf" - 0 Error(s), 0 Warning(s).
Build Time Elapsed: 00:00:01
Load "C:\\Dialog\\blinky_20150501_old\\blinky_arrived\\out\\blinky.axf"
Set JLink Project File to "C:\Dialog\blinky_20150501_old\blinky_arrived\JLinkSettings.ini"
* JLink Info: Device "CORTEX-M0" selected.

JLink info:
------------
DLL: V6.10i, compiled Oct 25 2016 19:31:51
Firmware: J-Link OB-SAM3U128 V1 compiled Jan 31 2017 09:46:32
Hardware: V1.00
S/N : 480066313

* JLink Info: Found SWD-DP with ID 0x0BB11477
* JLink Info: AP-IDR: 0x04770021, Type: AHB-AP
* JLink Info: Found Cortex-M0 r0p0, Little endian.
* JLink Info: FPUnit: 4 code (BP) slots and 0 literal slots
* JLink Info: CoreSight components:
* JLink Info: ROMTbl 0 @ E00FF000
* JLink Info: ROMTbl 0 [0]: FFF0F000, CID: B105E00D, PID: 000BB008 SCS
* JLink Info: ROMTbl 0 [1]: FFF02000, CID: B105E00D, PID: 000BB00A DWT
* JLink Info: ROMTbl 0 [2]: FFF03000, CID: B105E00D, PID: 000BB00B FPB
ROMTableAddr = 0xE00FF000

Target info:
------------
Device: ARMCM0
VTarget = 3.300V
State of Pins:
TCK: 0, TDI: 1, TDO: 1, TMS: 1, TRES: 1, TRST: 1
Hardware-Breakpoints: 4
Software-Breakpoints: 8192
Watchpoints: 2
JTAG speed: 25000 kHz

No Algorithm found for: 20000000H - 200014DFH
Erase skipped!
Error: Flash Download failed - "Cortex-M0"
Flash Load finished at 19:20:58

I tried to follow instructions fromhttp://www.cdiweb.com/datasheets/iwatt/DA14580DEVKT-BUserGuide.pdf
Unfortunately, I couldn't make it work.