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I am using an Econ Denebola board (which uses a CX3)
I followed the steps in EzUsbSuite_UG.pdf section 3.1 Debugging using Segger J-Link to configure my Segger Jlink pro debugger.
[1] The Denebola board has a number of boot modi which you can select via dip switches, if i select the default 'boot from spi flash' boot option i cannot connect with the debugger. The JLinkGDBServerCL console output says:
SEGGER J-Link GDB Server V6.12g Command Line Version
JLinkARM.dll V6.12g (DLL compiled Jan 27 2017 18:18:51)
-----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: ARM9
Target interface: JTAG
Target interface speed: 1000kHz
Target endian: little
Connecting to J-Link...
J-Link is connected.
Firmware: J-Link Pro V4 compiled Jan 25 2017 15:46:53
Hardware: V4.00
S/N: 174300742
Feature(s): RDI, FlashBP, FlashDL, JFlash, GDB
Checking target voltage...
Target voltage: 3.28 V
Listening on TCP/IP port 2331
Connecting to target...ERROR: Could not connect to target.
Target connection failed. GDBServer will be closed...Restoring target state and closing J-Link connection...
Shutting down...
Could not connect to target.
Please check power, connection and settings.
I did quite a lot of experimenting in this mode, one of the more strange observations is that if i start Jlink.exe from the command line, run 'connect' (a command which does not seem to have an explanation in the help for some reason) and enter ARM9/JTAG/autodetect/1000khz the connect fails. If i run 'usb' it also fails. But if I then press the reset button, then run 'usb' again then it succeeds in connecting for a while, but if i keep entering 'i' i see that after a few seconds the connection fails again. Output:
C:\Program Files (x86)\SEGGER\JLink_V612g>jlink
SEGGER J-Link Commander V6.12g (Compiled Jan 27 2017 18:19:20)
DLL version V6.12g, compiled Jan 27 2017 18:18:51
Connecting to J-Link via USB...O.K.
Firmware: J-Link Pro V4 compiled Jan 25 2017 15:46:53
Hardware version: V4.00
S/N: 174300742
License(s): RDI, FlashBP, FlashDL, JFlash, GDB
IP-Addr: DHCP (no addr. received yet)
VTref = 3.279V
Type "connect" to establish a target connection, '?' for help
J-Link>usb
Disconnecting from J-Link...O.K.
Connecting to J-Link via USB...O.K.
Firmware: J-Link Pro V4 compiled Jan 25 2017 15:46:53
Hardware version: V4.00
S/N: 174300742
License(s): RDI, FlashBP, FlashDL, JFlash, GDB
IP-Addr: DHCP (no addr. received yet)
VTref = 3.279V
J-Link>connect
Please specify device / core. <Default>: ARM9
Type '?' for selection dialog
Device>ARM9
Please specify target interface:
J) JTAG (Default)
TIF>
Device position in JTAG chain (IRPre,DRPre) <Default>: -1,-1 => Auto-detect
JTAGConf>
Specify target interface speed [kHz]. <Default>: 4000 kHz
Speed>1000
Device "ARM9" selected.
TotalIRLen = ?, IRPrint = 0x..000000000000000000000000
TotalIRLen = ?, IRPrint = 0x..000000000000000000000000
Cannot connect to target.
J-Link>usb
Disconnecting from J-Link...O.K.
Disconnecting from J-Link...O.K.
Connecting to J-Link via USB...O.K.
Firmware: J-Link Pro V4 compiled Jan 25 2017 15:46:53
Hardware version: V4.00
S/N: 174300742
License(s): RDI, FlashBP, FlashDL, JFlash, GDB
IP-Addr: DHCP (no addr. received yet)
VTref = 3.279V
Device "ARM9" selected.
TotalIRLen = ?, IRPrint = 0x..000000000000000000000000
TotalIRLen = ?, IRPrint = 0x..000000000000000000000000
Cannot connect to target.
[Here i reset the board]
J-Link>usb
Disconnecting from J-Link...O.K.
Disconnecting from J-Link...O.K.
Connecting to J-Link via USB...O.K.
Firmware: J-Link Pro V4 compiled Jan 25 2017 15:46:53
Hardware version: V4.00
S/N: 174300742
License(s): RDI, FlashBP, FlashDL, JFlash, GDB
IP-Addr: DHCP (no addr. received yet)
VTref = 3.279V
Device "ARM9" selected.
TotalIRLen = 4, IRPrint = 0x01
CP15.0.0: 0x41069265: ARM, Architecure 5TEJ
CP15.0.1: 0x1D112112: ICache: 8kB (4*64*32), DCache: 8kB (4*64*32)
Cache type: Separate, Write-back, Format C (WT supported)
Found 1 JTAG device, Total IRLen = 4:
#0 Id: 0x07926069, IRLen: 04, IRPrint: 0x1, ARM926EJ-S Core
ARM9 identified.
J-Link>i
JTAG Id: 0x00000000: INVALID
J-Link>i
JTAG Id: 0x00000000: INVALID
J-Link>i
JTAG Id: 0x00000000: INVALID
J-Link>usb
Disconnecting from J-Link...O.K.
Disconnecting from J-Link...O.K.
Connecting to J-Link via USB...O.K.
Firmware: J-Link Pro V4 compiled Jan 25 2017 15:46:53
Hardware version: V4.00
S/N: 174300742
License(s): RDI, FlashBP, FlashDL, JFlash, GDB
IP-Addr: DHCP (no addr. received yet)
VTref = 3.280V
Device "ARM9" selected.
TotalIRLen = ?, IRPrint = 0x..000000000000000000000000
TotalIRLen = ?, IRPrint = 0x..000000000000000000000000
Cannot connect to target.
J-Link>usb
Disconnecting from J-Link...O.K.
Disconnecting from J-Link...O.K.
Connecting to J-Link via USB...O.K.
Firmware: J-Link Pro V4 compiled Jan 25 2017 15:46:53
Hardware version: V4.00
S/N: 174300742
License(s): RDI, FlashBP, FlashDL, JFlash, GDB
IP-Addr: DHCP (no addr. received yet)
VTref = 3.280V
Device "ARM9" selected.
TotalIRLen = 4, IRPrint = 0x01
CP15.0.0: 0x41069265: ARM, Architecure 5TEJ
CP15.0.1: 0x1D112112: ICache: 8kB (4*64*32), DCache: 8kB (4*64*32)
Cache type: Separate, Write-back, Format C (WT supported)
Found 1 JTAG device, Total IRLen = 4:
#0 Id: 0x07926069, IRLen: 04, IRPrint: 0x1, ARM926EJ-S Core
ARM9 identified.
J-Link>i
JTAG Id: 0x07926069 Version: 0x0 Part no: 0x7926 Man. Id: 0034
J-Link>i
JTAG Id: 0x07926069 Version: 0x0 Part no: 0x7926 Man. Id: 0034
J-Link>i
JTAG Id: 0x07926069 Version: 0x0 Part no: 0x7926 Man. Id: 0034
J-Link>i
JTAG Id: 0x07926069 Version: 0x0 Part no: 0x7926 Man. Id: 0034
J-Link>i
JTAG Id: 0x07926069 Version: 0x0 Part no: 0x7926 Man. Id: 0034
J-Link>i
JTAG Id: 0x00000000: INVALID
J-Link>i
JTAG Id: 0x00000000: INVALID
J-Link>
Not sure what to think of that, is the connection 'unstable', does the chip makes itself 'unavailable' somehow over JTAG, ... ?
[2] With that idea in mind i changed to bootmode to start the USB boot mode. Using Jlink.exe and pressing i now the connection seems to be stable.
And if I try connecting in Eclipse it also works a "little bit". By that i mean i reach the main, i can step there, but if I eg put a breakpoint in the beginning of the function CyFxApplicationDefine and press Resume (F8), 95% of the time it will not work and i will get an error:
Starting target CPU...
ERROR: Bad JTAG communication: Write to IR: Expected 0x1, got 0x0 (TAP Command : 2) @ Off 0x5.
Any suggestions ? It seems the hardware connections etc are fine since it works to some degree. If I google that error i get suggestions that it means the CPU is in a 'bad state' but that does not help me much.
Is there anyone with a similar setup for who it works reliably ?
PS full console output for reference (loading the project, getting to main, setting a few breakpoints with one in CyFxApplicationDefine and resuming):
SEGGER J-Link GDB Server V6.12g Command Line Version
JLinkARM.dll V6.12g (DLL compiled Jan 27 2017 18:18:51)
-----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: ARM9
Target interface: JTAG
Target interface speed: 1000kHz
Target endian: little
Connecting to J-Link...
J-Link is connected.
Firmware: J-Link Pro V4 compiled Jan 25 2017 15:46:53
Hardware: V4.00
S/N: 174300742
Feature(s): RDI, FlashBP, FlashDL, JFlash, GDB
Checking target voltage...
Target voltage: 3.28 V
Listening on TCP/IP port 2331
Connecting to target...
J-Link found 1 JTAG device, Total IRLen = 4
JTAG ID: 0x07926069 (ARM9)
Connected to target
Waiting for GDB connection...Connected to 127.0.0.1
Reading all registers
Read 4 bytes @ address 0x00000000 (Data = 0xE4D79D65)
Target interface speed set to 1000 kHz
WARNING: PC of target system has unexpected value of 0xF0001F4C after reset.
Resetting target
Halting target CPU...
...Target halted (PC = 0x00000000)
PC = 00000000, CPSR = 000000D3 (SVC mode, ARM FIQ dis. IRQ dis.)
R0 = 00000000, R1 = 00000000, R2 = 00000000, R3 = 00000000
R4 = 00000000, R5 = 00000000, R6 = 00000000, R7 = 00000000
USR: R8 =00000000, R9 =00000000, R10=00000000, R11 =00000000, R12 =00000000
R13=00000000, R14=00000000
FIQ: R8 =00000000, R9 =00000000, R10=00000000, R11 =00000000, R12 =00000000
R13=00000000, R14=00000000, SPSR=00000010
SVC: R13=00000000, R14=00000000, SPSR=00000010
ABT: R13=00000000, R14=00000000, SPSR=00000010
IRQ: R13=00000000, R14=00000000, SPSR=00000010
UND: R13=00000000, R14=00000000, SPSR=00000010
Reading all registers
Select auto target interface speed (8000 kHz)
Flash breakpoints disabled
Downloading 10824 bytes @ address 0x00000100 - Verified OK
Downloading 16256 bytes @ address 0x40003000 - Verified OK
Downloading 16272 bytes @ address 0x40006F80 - Verified OK
Downloading 16288 bytes @ address 0x4000AF10 - Verified OK
Downloading 16240 bytes @ address 0x4000EEB0 - Verified OK
Downloading 16144 bytes @ address 0x40012E20 - Verified OK
Downloading 16192 bytes @ address 0x40016D30 - Verified OK
Downloading 16272 bytes @ address 0x4001AC70 - Verified OK
Downloading 16320 bytes @ address 0x4001EC00 - Verified OK
Downloading 4872 bytes @ address 0x40022BC0 - Verified OK
Downloading 24 bytes @ address 0x40023EC8 - Verified OK
Downloading 48 bytes @ address 0x40023EE0 - Verified OK
Downloading 404 bytes @ address 0x40023F10 - Verified OK
Downloading 64 bytes @ address 0x400240A4 - Verified OK
Downloading 16 bytes @ address 0x400240E4 - Verified OK
Downloading 16 bytes @ address 0x400240F4 - Verified OK
Downloading 16 bytes @ address 0x40024104 - Verified OK
Downloading 16 bytes @ address 0x40024114 - Verified OK
Downloading 208 bytes @ address 0x40024124 - Verified OK
Downloading 628 bytes @ address 0x400241F4 - Verified OK
Downloading 168 bytes @ address 0x40024468 - Verified OK
Downloading 116 bytes @ address 0x40024510 - Verified OK
Downloading 40 bytes @ address 0x40024584 - Verified OK
Downloading 40 bytes @ address 0x400245AC - Verified OK
Downloading 40 bytes @ address 0x400245D4 - Verified OK
Downloading 40 bytes @ address 0x400245FC - Verified OK
Downloading 40 bytes @ address 0x40024624 - Verified OK
Downloading 40 bytes @ address 0x4002464C - Verified OK
Downloading 40 bytes @ address 0x40024674 - Verified OK
Downloading 40 bytes @ address 0x4002469C - Verified OK
Downloading 48 bytes @ address 0x400246C4 - Verified OK
Downloading 104 bytes @ address 0x400246F4 - Verified OK
Downloading 20 bytes @ address 0x4002475C - Verified OK
Downloading 84 bytes @ address 0x40024770 - Verified OK
Downloading 48 bytes @ address 0x400247C4 - Verified OK
Downloading 24 bytes @ address 0x400247F4 - Verified OK
Downloading 24 bytes @ address 0x4002480C - Verified OK
Downloading 60 bytes @ address 0x40024824 - Verified OK
Downloading 48 bytes @ address 0x40024860 - Verified OK
Downloading 44 bytes @ address 0x40024890 - Verified OK
Downloading 128 bytes @ address 0x400248BC - Verified OK
Downloading 148 bytes @ address 0x4002493C - Verified OK
Downloading 208 bytes @ address 0x400249D0 - Verified OK
Downloading 60 bytes @ address 0x40024AA0 - Verified OK
Downloading 136 bytes @ address 0x40024ADC - Verified OK
Downloading 56 bytes @ address 0x40024B64 - Verified OK
Downloading 132 bytes @ address 0x40024B9C - Verified OK
Downloading 120 bytes @ address 0x40024C20 - Verified OK
Downloading 364 bytes @ address 0x40024C98 - Verified OK
Downloading 1092 bytes @ address 0x40024E04 - Verified OK
Downloading 172 bytes @ address 0x40025248 - Verified OK
Downloading 120 bytes @ address 0x400252F4 - Verified OK
Downloading 180 bytes @ address 0x4002536C - Verified OK
Downloading 332 bytes @ address 0x40025420 - Verified OK
Downloading 452 bytes @ address 0x4002556C - Verified OK
Downloading 240 bytes @ address 0x40025730 - Verified OK
Downloading 216 bytes @ address 0x40025820 - Verified OK
Downloading 16 bytes @ address 0x400258F8 - Verified OK
Downloading 16 bytes @ address 0x40025908 - Verified OK
Downloading 92 bytes @ address 0x40025918 - Verified OK
Downloading 232 bytes @ address 0x40025974 - Verified OK
Downloading 212 bytes @ address 0x40025A5C - Verified OK
Downloading 68 bytes @ address 0x40025B30 - Verified OK
Downloading 536 bytes @ address 0x40025B74 - Verified OK
Downloading 80 bytes @ address 0x40025D8C - Verified OK
Downloading 400 bytes @ address 0x40025DDC - Verified OK
Downloading 92 bytes @ address 0x40025F6C - Verified OK
Downloading 276 bytes @ address 0x40025FC8 - Verified OK
Downloading 240 bytes @ address 0x400260DC - Verified OK
Downloading 444 bytes @ address 0x400261CC - Verified OK
Downloading 68 bytes @ address 0x40026388 - Verified OK
Downloading 544 bytes @ address 0x400263CC - Verified OK
Downloading 560 bytes @ address 0x400265EC - Verified OK
Downloading 16 bytes @ address 0x4002681C - Verified OK
Downloading 304 bytes @ address 0x4002682C - Verified OK
Downloading 104 bytes @ address 0x4002695C - Verified OK
Downloading 276 bytes @ address 0x400269C4 - Verified OK
Downloading 256 bytes @ address 0x40026AD8 - Verified OK
Downloading 452 bytes @ address 0x40026BD8 - Verified OK
Downloading 1540 bytes @ address 0x40026D9C - Verified OK
Downloading 324 bytes @ address 0x400273A0 - Verified OK
Downloading 236 bytes @ address 0x400274E4 - Verified OK
Downloading 580 bytes @ address 0x400275D0 - Verified OK
Downloading 80 bytes @ address 0x40027814 - Verified OK
Downloading 272 bytes @ address 0x40027864 - Verified OK
Downloading 400 bytes @ address 0x40027974 - Verified OK
Downloading 320 bytes @ address 0x40027B04 - Verified OK
Downloading 128 bytes @ address 0x40027C44 - Verified OK
Downloading 192 bytes @ address 0x40027CC4 - Verified OK
Downloading 104 bytes @ address 0x40027D84 - Verified OK
Downloading 376 bytes @ address 0x40027DEC - Verified OK
Downloading 128 bytes @ address 0x40027F64 - Verified OK
Downloading 212 bytes @ address 0x40027FE4 - Verified OK
Downloading 160 bytes @ address 0x400280B8 - Verified OK
Downloading 440 bytes @ address 0x40028158 - Verified OK
Downloading 160 bytes @ address 0x40028310 - Verified OK
Downloading 160 bytes @ address 0x400283B0 - Verified OK
Downloading 160 bytes @ address 0x40028450 - Verified OK
Downloading 612 bytes @ address 0x400284F0 - Verified OK
Downloading 116 bytes @ address 0x40028754 - Verified OK
Downloading 160 bytes @ address 0x400287C8 - Verified OK
Downloading 52 bytes @ address 0x40028868 - Verified OK
Downloading 64 bytes @ address 0x4002889C - Verified OK
Downloading 64 bytes @ address 0x400288DC - Verified OK
Downloading 136 bytes @ address 0x4002891C - Verified OK
Downloading 456 bytes @ address 0x400289A4 - Verified OK
Downloading 64 bytes @ address 0x40028B6C - Verified OK
Downloading 712 bytes @ address 0x40028BAC - Verified OK
Downloading 208 bytes @ address 0x40028E74 - Verified OK
Downloading 600 bytes @ address 0x40028F44 - Verified OK
Downloading 440 bytes @ address 0x4002919C - Verified OK
Downloading 460 bytes @ address 0x40029354 - Verified OK
Downloading 588 bytes @ address 0x40029520 - Verified OK
Downloading 720 bytes @ address 0x4002976C - Verified OK
Downloading 1512 bytes @ address 0x40029A3C - Verified OK
Downloading 168 bytes @ address 0x4002A024 - Verified OK
Downloading 472 bytes @ address 0x4002A0CC - Verified OK
Downloading 732 bytes @ address 0x4002A2A4 - Verified OK
Downloading 756 bytes @ address 0x4002A580 - Verified OK
Downloading 136 bytes @ address 0x4002A874 - Verified OK
Downloading 1236 bytes @ address 0x4002A8FC - Verified OK
Downloading 524 bytes @ address 0x4002ADD0 - Verified OK
Downloading 956 bytes @ address 0x4002AFDC - Verified OK
Downloading 1120 bytes @ address 0x4002B398 - Verified OK
Downloading 940 bytes @ address 0x4002B7F8 - Verified OK
Downloading 828 bytes @ address 0x4002BBA4 - Verified OK
Downloading 424 bytes @ address 0x4002BEE0 - Verified OK
Downloading 416 bytes @ address 0x4002C088 - Verified OK
Downloading 752 bytes @ address 0x4002C228 - Verified OK
Downloading 464 bytes @ address 0x4002C518 - Verified OK
Downloading 156 bytes @ address 0x4002C6E8 - Verified OK
Downloading 212 bytes @ address 0x4002C784 - Verified OK
Downloading 76 bytes @ address 0x4002C858 - Verified OK
Downloading 176 bytes @ address 0x4002C8A4 - Verified OK
Downloading 968 bytes @ address 0x4002C954 - Verified OK
Downloading 360 bytes @ address 0x4002CD1C - Verified OK
Downloading 108 bytes @ address 0x4002CE84 - Verified OK
Downloading 320 bytes @ address 0x4002CEF0 - Verified OK
Downloading 300 bytes @ address 0x4002D030 - Verified OK
Downloading 508 bytes @ address 0x4002D15C - Verified OK
Downloading 628 bytes @ address 0x4002D358 - Verified OK
Downloading 60 bytes @ address 0x4002D5CC - Verified OK
Downloading 164 bytes @ address 0x4002D608 - Verified OK
Downloading 428 bytes @ address 0x4002D6AC - Verified OK
Downloading 148 bytes @ address 0x4002D858 - Verified OK
Downloading 208 bytes @ address 0x4002D8EC - Verified OK
Downloading 208 bytes @ address 0x4002D9BC - Verified OK
Downloading 628 bytes @ address 0x4002DA8C - Verified OK
Downloading 232 bytes @ address 0x4002DD00 - Verified OK
Downloading 1408 bytes @ address 0x40030000 - Verified OK
Writing register (PC = 0x70e00040)
Read 4 bytes @ address 0x4000E070 (Data = 0xE59F1034)
Read 4 bytes @ address 0x40020D98 (Data = 0xE59F3284)
Read 4 bytes @ address 0x40020F50 (Data = 0xE24B3010)
Read 4 bytes @ address 0x40020D98 (Data = 0xE59F3284)
Read 4 bytes @ address 0x40020FE8 (Data = 0xE24B300A)
Read 4 bytes @ address 0x4002113C (Data = 0xE3A03000)
Read 4 bytes @ address 0x4002113C (Data = 0xE3A03000)
Read 4 bytes @ address 0x40020D98 (Data = 0xE59F3284)
Read 4 bytes @ address 0x40020E6C (Data = 0xEBFFFF29)
Read 4 bytes @ address 0x4002113C (Data = 0xE3A03000)
Read 4 bytes @ address 0x4002113C (Data = 0xE3A03000)
Read 4 bytes @ address 0x4002113C (Data = 0xE3A03000)
Reading all registers
Setting breakpoint @ address 0x40020E6C, Size = 4, BPHandle = 0x0001
Setting breakpoint @ address 0x40020F50, Size = 4, BPHandle = 0x0002
Setting breakpoint @ address 0x40020FE8, Size = 4, BPHandle = 0x0003
Setting breakpoint @ address 0x4002113C, Size = 4, BPHandle = 0x0004
Starting target CPU...
Reading all registers
Removing breakpoint @ address 0x40020E6C, Size = 4
Removing breakpoint @ address 0x40020F50, Size = 4
Removing breakpoint @ address 0x40020FE8, Size = 4
Removing breakpoint @ address 0x4002113C, Size = 4
Read 4 bytes @ address 0x4002113C (Data = 0xE3A03000)
Reading 64 bytes @ address 0x10001FC0
Reading 112 bytes @ address 0x4002113C
Read 4 bytes @ address 0x40030860 (Data = 0x00000000)
Read 1 bytes @ address 0x40020D88 (Data = 0x00)
Read 1 bytes @ address 0x40020D88 (Data = 0x00)
Read 4 bytes @ address 0x40021068 (Data = 0xE3A03000)
Read 4 bytes @ address 0x40021090 (Data = 0xE51B3008)
Setting breakpoint @ address 0x40020E6C, Size = 4, BPHandle = 0x0005
Setting breakpoint @ address 0x40020F50, Size = 4, BPHandle = 0x0006
Setting breakpoint @ address 0x40020FE8, Size = 4, BPHandle = 0x0007
Setting breakpoint @ address 0x40021090, Size = 4, BPHandle = 0x0008
Starting target CPU...
ERROR: Bad JTAG communication: Write to IR: Expected 0x1, got 0x0 (TAP Command : 2) @ Off 0x5.