最近在弄这个XDS100V3，弄了两天都没一点进展，完全按照官网上提供的文档进行操作，在PC机的设备管理器上有USB serial 出来，但是测试到12步时总初始化不了UART
E:\XDS100V3\Utilities>dbgTrace /100v3
<================================================>
dbgTrace Version 0.72 (09/07/11)
Traceprobelib.dll Version 0.2.2.1
Pod Type = 7
Attempting to open XDS100v3 Emulator!
XDS100 V3 emulator detected
Enter Cmd: uartinit 115200
Error, failed to find XDS100v3 UART
Enter Cmd: do scripts\mfg_test
------------------------------------
--- XDS100v3 Manufacturing Test
------------------------------------
1. Initialize the xds100v3 as an emulator
--- Initialize XDS100v3 ---
Reset the XDS100v3
Enable JTAG outputs
Open ctl lvl 7
Set RE samp, FE dout
Close cmd window
-------------------------------
--- Read XDS100v3 ---
-------------------------------
open ctl lvl 7
read capability 0 0x0300
Returned value = 0x0060 0x0300
read revision 0 0x6301
Returned value = 0x0066 0x6301
read fixed pattern 0 0xB507
Returned value = 0x00A6 0xB507
read config reg
Returned value = 0x0020 0x0102
read freq 0 0x0703
Returned value = 0x00E6 0x0703
read status 0 0x3105
Returned value = 0x0026 0x3105
read emu_cfg reg 0 0x0108
Returned value = 0x0020 0x0108
close cmd window
2. Execute an 2-bit IR scan to load IDCODE
3. Execute an 8-bit DR scan to get the value, 0x6D
Returned value = 0x006D
4. Execute a 2-bit IR scan to load ACCESS
5. Execute an 8-bit DR scan to write the value 0x5A
6. Execute an 8-bit DR to verify the value is 0x5A
Returned value = 0x005A
7. Execute an 8-bit DR scan to write the value 0xC3
8. Execute an 8-bit DR to verify the value is 0xC3
Returned value = 0x00C3
9. Toggle nTRST
10. Execute a 2-bit IR scan to load ACCESS
11. Execute an 8-bit DR to verify the value is reset
Returned value = 0x0000
12. Execute a 2-bit IR scan to load ctl/Status instruction
Error, failed to find XDS100v3 UART
Script aborted due to an error
Enter Cmd: exit
dbgTrace Complete
然后在查看源码时，发现就是在
echo 12. Execute a 2-bit IR scan to load ctl/Status instruction
scanir -2,1
; 7 - Keeper Active
; 6 - spare
; 5 - TxD from FTDI
; 4 - RTS_n from FTDI
; 3 - dts_emu4_pin (CTS_n looped back from SRST)
; 2 - dts_emu2_pin (RxD looped back from TxD)
; 1 - ext EMU1 pin
; 0 - ext EMU0 pin
uartinit 115200 //（执行这条指令时报错）
uartctl rts=0
感谢大家作答，期待您的回复
