Cannot enter HALT mode with arm7 processor

Development Boards MicroMod
1

I have a dragonball MX1 (which is an arm720t), I can connect with openocd with a wiggler cable, but can’t enter halt. It says “Requesting halt”, but that’s it. Poll shows state as “running”.

Also, log shows some errors:

Error:   arm_jtag.c:38 arm_jtag_set_instr_error_handler(): setting the new JTAG instruction failed, debugging is likely to be broken
Error:   arm_jtag.c:38 arm_jtag_set_instr_error_handler(): setting the new JTAG instruction failed, debugging is likely to be broken
Error:   embeddedice.c:181 embeddedice_build_reg_cache(): unknown EmbeddedICE version (comms ctrl: 0xffffffff)

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2

answered my question:

It’s an arm920t, stupid

Setting target to arm920t helped :slight_smile:

But now question: upload to a blank flash 1 MB takes 20 minutes. What could be wrong?

(reading is fast)

3

You’re using a parallel port wiggler? Thats about normal to push 1MB. A USB based JTAG with a high clock speed is the way to go.