Hi,
I am following this tutorial: https://learn.sparkfun.com/tutorials/re … ment-guide
First problem:
After connecting the individual board one at a time, I see two connections(like COM 9 and COM 10). So I do not know which port to use for serial connections. I have no idea why that happens.
Second problem:
After building the project, when I run the project through run configuration on Freedom IDE, I get the following error:
SEGGER J-Link GDB Server V6.52e Command Line Version
JLinkARM.dll V6.52e (DLL compiled Oct 16 2019 12:16:54)
Command line: -if jtag -device FE310 -endian little -speed 1000 -port 2331 -swoport 2332 -telnetport 2333 -vd -ir -localhostonly 1 -singlerun -strict -timeout 0 -nogui
-----GDB Server start settings-----
GDBInit file: none
GDB Server Listening port: 2331
SWO raw output listening port: 2332
Terminal I/O port: 2333
Accept remote connection: localhost only
Generate logfile: off
Verify download: on
Init regs on start: on
Silent mode: off
Single run mode: on
Target connection timeout: 0 ms
------J-Link related settings------
J-Link Host interface: USB
J-Link script: none
J-Link settings file: none
------Target related settings------
Target device: FE310
Target interface: JTAG
Target interface speed: 1000kHz
Target endian: little
Connecting to J-Link...
J-Link is connected.
Firmware: J-Link OB-K22-SiFive compiled Aug 22 2019 14:12:56
Hardware: V1.00
S/N: 979005689
Checking target voltage...
Target voltage: 3.30 V
Listening on TCP/IP port 2331
Connecting to target...
J-Link found 1 JTAG device, Total IRLen = 5
JTAG ID: 0x20000913 (RISC-V)
Connected to target
Waiting for GDB connection...Connected to 127.0.0.1
Reading all registers
Received monitor command: speed 1000
Target interface speed set to 1000 kHz
Received monitor command: clrbp
Received monitor command: reset
Resetting target
Received monitor command: halt
Halting target CPU...
...Target halted (PC = 0x00001004)
Received monitor command: regs
X0 = 00000000, X1 = 20015444, X2 = 80000F10, X3 = 80001288
X4 = 00000000, X5 = 200109D2, X6 = 0000000F, X7 = 80000B6C
X8 = 00000400, X9 = 02000080, X10= 00000000, X11= 8000104C
X12= 0000000E, X13= 0000000E, X14= 00000000, X15= 00000000
X16= 0000001F, X17= 00000000, X18= 02000080, X19= 00000000
X20= 00000000, X21= 00000000, X22= 00000000, X23= 00000000
X24= 00000000, X25= 00000000, X26= 00000000, X27= 00000000
X28= 00000000, X29= 00000000, X30= 00000000, X31= 00000000
PC = 00001004
Reading all registers
Received monitor command: speed auto
Select auto target interface speed (4000 kHz)
Received monitor command: flash breakpoints 1
Flash breakpoints enabled
Received monitor command: semihosting enable
Semi-hosting enabled (SVC Addr = 0x08)
Received monitor command: semihosting IOClient 1
Semihosting I/O set to TELNET Client
Read 2 bytes @ address 0x00000000 (Data = 0x0000)
Read 2 bytes @ address 0x00000002 (Data = 0x0000)
Read 2 bytes @ address 0x00000004 (Data = 0x0000)
Read 2 bytes @ address 0x00000006 (Data = 0x0000)
Read 2 bytes @ address 0x00000008 (Data = 0x0000)
Read 2 bytes @ address 0x0000000A (Data = 0x0000)
Read 2 bytes @ address 0x0000000C (Data = 0x0000)
Read 2 bytes @ address 0x0000000E (Data = 0x0000)
Read 2 bytes @ address 0x00000010 (Data = 0x0000)
Read 2 bytes @ address 0x00000012 (Data = 0x0000)
Read 2 bytes @ address 0x00000014 (Data = 0x0000)
Read 2 bytes @ address 0x00000016 (Data = 0x0000)
Read 2 bytes @ address 0x00000018 (Data = 0x0000)
Read 2 bytes @ address 0x0000001A (Data = 0x0000)
Read 2 bytes @ address 0x0000001C (Data = 0x0000)
Read 2 bytes @ address 0x0000001E (Data = 0x0000)
Read 2 bytes @ address 0x00000020 (Data = 0x0000)
Read 2 bytes @ address 0x00000022 (Data = 0x0000)
Read 2 bytes @ address 0x00000024 (Data = 0x0000)
Read 2 bytes @ address 0x00000026 (Data = 0x0000)
Read 2 bytes @ address 0x00000028 (Data = 0x0000)
Read 2 bytes @ address 0x0000002A (Data = 0x0000)
Read 2 bytes @ address 0x0000002C (Data = 0x0000)
Read 2 bytes @ address 0x0000002E (Data = 0x0000)
Read 2 bytes @ address 0x00000030 (Data = 0x0000)
Read 2 bytes @ address 0x00000032 (Data = 0x0000)
Read 2 bytes @ address 0x00000034 (Data = 0x0000)
Read 2 bytes @ address 0x00000036 (Data = 0x0000)
Read 2 bytes @ address 0x00000038 (Data = 0x0000)
Read 2 bytes @ address 0x0000003A (Data = 0x0000)
Read 2 bytes @ address 0x0000003C (Data = 0x0000)
Read 2 bytes @ address 0x0000003E (Data = 0x0000)
Read 2 bytes @ address 0x00000040 (Data = 0x0000)
Read 2 bytes @ address 0x00000042 (Data = 0x0000)
Read 2 bytes @ address 0x00000044 (Data = 0x0000)
Read 2 bytes @ address 0x00000046 (Data = 0x0000)
Read 2 bytes @ address 0x00000048 (Data = 0x0000)
Read 2 bytes @ address 0x0000004A (Data = 0x0000)
Read 2 bytes @ address 0x0000004C (Data = 0x0000)
Read 2 bytes @ address 0x0000004E (Data = 0x0000)
Read 2 bytes @ address 0x00000050 (Data = 0x0000)
Read 2 bytes @ address 0x00000052 (Data = 0x0000)
Read 2 bytes @ address 0x00000054 (Data = 0x0000)
Read 2 bytes @ address 0x00000056 (Data = 0x0000)
Read 2 bytes @ address 0x00000058 (Data = 0x0000)
Read 2 bytes @ address 0x0000005A (Data = 0x0000)
Read 2 bytes @ address 0x0000005C (Data = 0x0000)
Read 2 bytes @ address 0x0000005E (Data = 0x0000)
Read 2 bytes @ address 0x00000060 (Data = 0x0000)
Read 2 bytes @ address 0x00000062 (Data = 0x0000)
Downloading 404 bytes @ address 0x20010000 - Verified OK
Downloading 15600 bytes @ address 0x20010200 - Verified OK
Downloading 5460 bytes @ address 0x20013EF0 - Verified OK
Downloading 3148 bytes @ address 0x20015444 - Verified OK
Downloading 12 bytes @ address 0x20016090 - Verified OK
Downloading 2768 bytes @ address 0x200160A0 - Verified OK
Comparing flash [....................] Done.
Writing register (pc = 0x20010000)
Reading all registers
Starting target CPU...
ERROR: Communication timed out: Requested 4 bytes, received 0 bytes !
ERROR: Can not read register 4224 (PC) while CPU is running
WARNING: Target connection lost.
Reading all registers
WARNING: Failed to read memory @ address 0x00000000
After that, the board ejects and reconnects.
I also tried copy-and-paste to the board’s flash directly, but again board disconnects and reconnects.
Please let me know how to solve this issue.
Thank you.