(RV64) K210 (Sipeed Maix Bit)

連接OpenOCD(SiPEED USB-JTAG/TTL)

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連接TDI、TDO、TMS、TCK、RXD、TXD、RST、GND，最後記得連接USB Type-C提供電源：


k210.cfg

# debug adapter
source [find ft2232c.cfg]

transport select jtag
adapter_khz 10000

# server port
gdb_port 3333
telnet_port 4444

# add cpu target
set _CHIPNAME riscv

jtag newtap $_CHIPNAME cpu -irlen 5 -expected-id 0x04e4796b

set _TARGETNAME $_CHIPNAME.cpu
target create $_TARGETNAME riscv -chain-position $_TARGETNAME

# command
init
halt

ft2232c.cfg

interface ftdi
ftdi_vid_pid 0x0403 0x6010

ftdi_layout_init 0xfff8 0xfffb
ftdi_layout_signal nTRST -data 0x0100 -oe 0x0100
ftdi_layout_signal nSRST -data 0x0200 -oe 0x0200

連接步驟：

$ cd 
$ wget https://s3.cn-north-1.amazonaws.com.cn/dl.kendryte.com/documents/kendryte-openocd-0.1.3-ubuntu64.tar.gz
$ tar xvf kendryte-openocd-0.1.3-ubuntu64.tar.gz
$ ./kendryte-openocd/bin/openocd -f k210.cfg 
  Kendryte Open On-Chip Debugger For RISC-V v0.1.3 (20180912)
  Licensed under GNU GPL v2
  adapter speed: 10000 kHz
  Info : ftdi: if you experience problems at higher adapter clocks, try the command "ftdi_tdo_sample_edge falling"
  Info : clock speed 10000 kHz
  Info : JTAG tap: riscv.cpu tap/device found: 0x04e4796b (mfg: 0x4b5 (), part: 0x4e47, ver: 0x0)
  Info : [0] Found 4 triggers
  Info : [1] Found 4 triggers
  [1] halted at 0x800005ec due to debug interrupt
  Info : Examined RISCV core; found 2 harts, XLEN=64, misa=0x800000000014112d
  Info : Listening on port 3333 for gdb connections
  [1] halted at 0x800005ec due to debug interrupt
  [0] halted at 0x800b3840 due to debug interrupt
  Info : Listening on port 6666 for tcl connections
  Info : Listening on port 4444 for telnet connections

P.S. 由於有連接RXD和TXD，因此，可以使用minicom開啟FT2232C做UART測試。

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