JTAG beagle bone black with buspirate and openocd

OpenOCD JTAG debugging with the Bus Pirate.

JTAG beagle bone black with buspirate and openocd

Postby jitendriya » Thu Aug 03, 2017 5:18 am

Hello

I am very new to JTAG and i am trying to do the setup for jtag in beaglebone black(BBB) rev c board using buspirate(BP) and openocd.
I have installed the P2 header in BBB manually. I have connected the BBB and BP as follows
JTAG BP BBB
TMS CS P2(1) P2 header pin 1
TDI MOSI P2(3)
VTREF VPU P2(5)
TDO MISO P2(7)
TCK CLK P2(11)
TRST AUX P2(2)
GRND GND P2(10)


I am using my user configuration file(BP_userconfig.cfg) for openocd which has following content.

source [find interface/buspirate.cfg]
source [find board/ti_beaglebone_black.cfg]
buspirate_vreg 0
buspirate_mode open-drain
buspirate_pullup 1
reset_config trst_only
buspirate_port /dev/ttyUSB0



Now while running the command sudo openocd -f BP_userconfig.cfg I am getting following error.

lenova@lenova-ThinkPad-T410:~/jiten/JTAG$ sudo openocd -f BP_userconfig.cfg
Open On-Chip Debugger 0.10.0+dev-00167-g29cfe9c (2017-07-20-14:08)
Licensed under GNU GPL v2

Warn : Adapter driver 'buspirate' did not declare which transports it allows; assuming legacy JTAG-only
Info : only one transport option; autoselect 'jtag'
srst_only separate srst_gates_jtag srst_open_drain connect_deassert_srst
trst_and_srst separate srst_gates_jtag trst_push_pull srst_open_drain connect_deassert_srst
adapter speed: 1000 kHz
trst_and_srst separate srst_gates_jtag trst_push_pull srst_open_drain connect_deassert_srst
Info : Buspirate Interface ready!
Info : This adapter doesn't support configurable speed
Info : JTAG tap: am335x.jrc tap/device found: 0x2b94402f (mfg: 0x017 (Texas Instruments), part: 0xb944, ver: 0x2)
Info : JTAG tap: am335x.dap enabled
Error: JTAG-DP STICKY ERROR
Error: Could not initialize the APB-AP

Does anyone have any idea about this error? and do i need to do anything else in BBB apart from installing P2 header?
Please let me know if i am doing anything wrong.

Thanks in advance.

Regards
jitendriya
jitendriya
Newbie
Newbie
 
Posts: 1
Joined: Thu Aug 03, 2017 2:47 am

Return to OpenOCD JTAG