[OpenOCD-devel] OpenOCD Warn : Invalid ACK 0x7 in JTAG-DP transaction

[Arnd B. <arn...@go...>]

Hello Developers,

since 2 Weeks im try to get OpenOcd working with my new Atmel SAM3X-EK. 
The same configuration Works fine for SAM3S Olimex SAM3-H256 Board and an Atmel SAM3U-EK Board

Target Board: Atmel SAM3X-EK.
Configuration Script :
# My SAM3X-EK config
source [find interface/ftdi/olimex-arm-usb-ocd-h.cfg]
source [find board/atmel_sam3x_ek.cfg]
Openocd Command: openocd -f openocd.cfg

Actual Result: Invalid ACK and keeps polling. Not controllable by GDB or Telnet 

Console Output:

Info : only one transport option; autoselect 'jtag'
adapter speed: 500 kHz
adapter_nsrst_delay: 100
jtag_ntrst_delay: 100
cortex_m3 reset_config sysresetreq
srst_only separate srst_gates_jtag srst_open_drain
Info : clock speed 500 kHz
Info : JTAG tap: sam3.cpu tap/device found: 0x4ba00477 (mfg: 0x23b, part: 0xba00, ver: 0x4)
Warn : Invalid ACK 0x7 in JTAG-DP transaction
Error: JTAG-DP STICKY ERROR
Error: MEM_AP_CSW 0x0, MEM_AP_TAR 0xc0000000
Info : sam3.cpu: hardware has 0 breakpoints, 0 watchpoints
Error: JTAG-DP STICKY ERROR
Error: MEM_AP_CSW 0x23000040, MEM_AP_TAR 0xe0c0001a
Polling target failed, GDB will be halted. Polling again in 100ms
Error: JTAG-DP STICKY ERROR
Error: MEM_AP_CSW 0x23000040, MEM_AP_TAR 0x6000000
Polling target failed, GDB will be halted. Polling again in 300ms
Polling succeeded again
Error: JTAG-DP STICKY ERROR
Error: MEM_AP_CSW 0x0, MEM_AP_TAR 0xc0000000
Polling target failed, GDB will be halted. Polling again in 100ms
Error: JTAG-DP STICKY ERROR
Error: MEM_AP_CSW 0x0, MEM_AP_TAR 0x0
Polling target failed, GDB will be halted. Polling again in 300ms
Polling target failed, GDB will be halted. Polling again in 700ms
Polling succeeded again
Warn : Invalid ACK 0x6 in JTAG-DP transaction
Error: JTAG-DP STICKY ERROR
Error: MEM_AP_CSW 0x1000041, MEM_AP_TAR 0xe000edf4
Error: JTAG-DP STICKY ERROR
Error: MEM_AP_CSW 0x1000041, MEM_AP_TAR 0xf00075f4
Polling target failed, GDB will be halted. Polling again in 100ms
Error: JTAG-DP STICKY ERROR
Error: MEM_AP_CSW 0x0, MEM_AP_TAR 0x0
Polling target failed, GDB will be halted. Polling again in 300ms
Error: sam3.cpu -- clearing lockup after double fault
Error: JTAG-DP STICKY ERROR
Error: MEM_AP_CSW 0x1000041, MEM_AP_TAR 0x1000041
Polling target failed, GDB will be halted. Polling again in 700ms
Warn : Invalid ACK 0x7 in JTAG-DP transaction
Polling target failed, GDB will be halted. Polling again in 1500ms
Error: JTAG-DP STICKY ERROR
Error: MEM_AP_CSW 0x1000040, MEM_AP_TAR 0xf800edf4
Polling target failed, GDB will be halted. Polling again in 3100ms
Error: JTAG-DP STICKY ERROR
Error: MEM_AP_CSW 0x1000040, MEM_AP_TAR 0xe000edf4
Polling target failed, GDB will be halted. Polling again in 6300ms
Polling succeeded again
Error: JTAG-DP STICKY ERROR
Error: MEM_AP_CSW 0x0, MEM_AP_TAR 0x0
Polling target failed, GDB will be halted. Polling again in 100ms
Polling target failed, GDB will be halted. Polling again in 300ms
Error: JTAG-DP STICKY ERROR
Error: MEM_AP_CSW 0x1000040, MEM_AP_TAR 0xf8003b7d
Polling target failed, GDB will be halted. Polling again in 700ms
Polling succeeded again
Polling target failed, GDB will be halted. Polling again in 100ms
Error: JTAG-DP STICKY ERROR
Error: MEM_AP_CSW 0x1000040, MEM_AP_TAR 0x80800020
Polling target failed, GDB will be halted. Polling again in 300ms
Error: JTAG-DP STICKY ERROR
Error: MEM_AP_CSW 0x1000040, MEM_AP_TAR 0x0
Polling target failed, GDB will be halted. Polling again in 700ms
Polling target failed, GDB will be halted. Polling again in 1500ms
Polling target failed, GDB will be halted. Polling again in 3100ms
Polling succeeded again