------------------------------------------------------------------------------- JTAG / NXP LPC2148 ------------------------------------------------------------------------------- This is a set of example captures of JTAG communication to a Keil MCB2140 eval board with a NXP LPC2148 (ARM7TDMI) microcontroller. The JTAG adapter used was the FTDI FT2232H based Floss-JTAG (V0.2). Details: http://randomprojects.org/wiki/Floss-JTAG http://www.keil.com/mcb2140/ http://www.nxp.com/products/microcontrollers/arm7/lpc2100/series/LPC2141_42_44_46_48.html Logic analyzer setup -------------------- The logic analyzer used was a Saleae Logic (at 4MHz): Probe JTAG connector -------------------------- 1 (black) TRST# 2 (brown) TDI 3 (red) TMS 4 (orange) TCK 5 (yellow) TDO 6 (green) RST 7 (blue) RTCK keil_mcb2140_init.sr -------------------- The following OpenOCD command was used: openocd -f interface/flossjtag-noeeprom.cfg -f board/keil_mcb2140.cfg \ -c "init" The sigrok command line used was: sigrok-cli -d 0:samplerate=4mhz --time 5s \ -p '1=TRST,2=TDI,3=TMS,4=TCK,5=TDO,6=RST,7=RTCK' -o keil_mcb2140_reset.sr --------------------- The following OpenOCD command was used: openocd -f interface/flossjtag-noeeprom.cfg -f board/keil_mcb2140.cfg \ -c "init" -c "poll off" -c "sleep 4000" -c "reset" -c "halt" (only the last "reset" and "halt" are in the dump) The sigrok command line used was: sigrok-cli -d 0:samplerate=4mhz --time 5s \ -p '1=TRST,2=TDI,3=TMS,4=TCK,5=TDO,6=RST,7=RTCK' -o keil_mcb2140_idle.sr -------------------- The following OpenOCD command was used: openocd -f interface/flossjtag-noeeprom.cfg -f board/keil_mcb2140.cfg \ -c "init" The sigrok command line used was: sigrok-cli -d 0:samplerate=4mhz --time 3s \ -p '1=TRST,2=TDI,3=TMS,4=TCK,5=TDO,6=RST,7=RTCK' -o sigrok-cli was only started a few seconds after the OpenOCD init/connection to capture what happens when the user doesn't actively use OpenOCD commands. keil_mcb2140_irscan_drscan.sr ----------------------------- The following OpenOCD command was used: openocd -f interface/flossjtag-noeeprom.cfg -f board/keil_mcb2140.cfg \ -c "init" -c "poll off" -c "sleep 4000" -c "irscan lpc2148.cpu 0xe" \ -c "drscan lpc2148.cpu 32 0" This gets the 32bit contents of the IDCODE register (0b1110): 0x4f1f0f0f. The sigrok command line used was: sigrok-cli -d 0:samplerate=4mhz --time 5s \ -p '1=TRST,2=TDI,3=TMS,4=TCK,5=TDO,6=RST,7=RTCK' -o