Flashing custom board based on D2000 via D2000 dev kit - problem

[mgolu]

Dear all,

I have problem with flashing D2000 unit please support me if any of you have some idea. I made custom board for IoT by my selfs of course it is first version and till end of curent year I want to produce next version. Third version after tests it should go to our clients (about end of February).

Problem description:

I paste into the custom board parts responsible for power and reset of the mcu. In next step I connect the JTAG from original D2000 board and reset line. As next step I connect board int ISSM environment and set up conection via JTAG as on screen below. I was verry happy that it is working properly. In next step I want to flash ROM in my new MCU but during ROM flashing process (about 50%) I recived the error as on second screen below. In case of any problem I can attacht my schematic or board layout. Does anyone have some idea what can be wrong or maybe some of you had similary problem?

[AZimi]

Hi,

Please, attach the circuit diagram and what power supply are using?

[mgolu]

Hi Lockdog,

thanks for your fast response diagrams are below I'm using DC/DC step down converter LM3671 where output is 3.3 V (3.27V).

[AZimi]

And what voltage on the input?

[mgolu]

Hi,

I connect input of the LM3671 with J22 pin 3 of D2000 dev kit (3.3V). What do you think about the both crystals ? they are need to be soldered or not ?

[AZimi]

Crystals are not required, otherwise jtag didn't start at all. Try to connect 3.3V from Intel's board directly to your hardware, bypassing DC-DC. Maybe voltage drops down while firmwaring.

[mgolu]

After this change I have this effect now.

[AZimi]

Try to pull-down GPIO13 to GND, reset the chip (trun-off-on) and try again

[mgolu]

Hi,

I have connected GPIO[13] / PIN5 all the time to GND (I have juper there). What voltage level should be on RESET ?

[AZimi]

Should be closer to DVDD (1.8V), check this voltage please, maybe something wrnog with internal LDO. Also check soldering on the board.

[mgolu]

Now I have bypassed LM3671 (powered from 3.3v on D2000 dev kit) the JTAG lines and RST are disconnected. I that situation on the voltage on marked point is 1,7 V

[mgolu]

When I connect the JTAG lines and RESET (RESET D2000 dev kit I connect as on picture below) the voltage in the same point is 1.05V

[AZimi]

Something goes wrong Check the voltage on the DVDD directly. Did you try to upload ROM with disconnected RESET from Intel's board?

Out of topic: Free pads of X2 crystal should be connected to the ground.

[mgolu]

I try to upload ROM with disconnected RESET but effect is as on screen below. Voltage are as on picture below 1.8v. I juts wondering why when I'm connecting RESET the voltage goes down from 1,75 to 1.05 V. OOT - thanks.

[AZimi]

The device is recognized correctly. Try to find short-circuit of JTAG lines on your board. Does Intel's board work right while firmwaring? I don't imagine right now why 1.8V drops down.

[idata]

The JTAG seems to work: it properly detects the quark tap/device.

I've seen similar error messages before on my custom boards. The JTAG on the Intel Quark D2000 board implements an additional signal to reset the D2000 MCU using RST_N signal. And apparently the "Update target ROM" resets the D2000 and expects to find the Quark in a reset state.

My workaround is to run OpenOCD manually from command line (instructions below are for Linux):

source /opt/intel/issm_2016.1.057/issm_env.sh

cd $ISSM_TOOLS_ROOT/debugger/openocd

bin/openocd -f scripts/interface/ftdi/flyswatter2.cfg -f scripts/board/quark_d2000.cfg -c "set QUARK_D2000_OTPC_DATA_WRITE_ENABLED 1" -c "flash_rom $ISSM_BSP_ROOT/soc/quark_d2000/rom/quark_d2000_rom.bin" -c exit

Sometimes I need to push the reset button on my Quark board for this procedure to work.

[mgolu]

Hi Lockdog sorry for my delay but yesterday I had unexpected problems with Internet connection. I'm checking mentioned short-circuit of JTAG lines. Yes When I connect other D200 board it works properly.

[mgolu]

There is no short-circuit on JTAG lines.

[mgolu]

Hi SergeyK, thanks for your response. I have connecet J22 pin 3 from dev board to RESET on my board if you talk about this reset.

[idata]

I am talking about the MCU reset, not the JTAG TRST signal. That is pin 30, RST_N or RESET_N. If you look at the Intel Quark D2000 board schematic, it is connected through Q3 to FT232HL. This allows ISSM to reset the MCU.

If I understand correctly, you're using the Intel Quark D2000 board as the JTAG interface, when perhaps you can connect RST_N on your board to Intel's board reset switch SW1 pin 1.

On my own Quark D2000 projects I have a 10 pin JTAG connector, and I was using a Flyswatter2 USB to JTAG adapter. The 10-pin JTAG connector does not provide system reset signal, and I had similar errors (target is running) when trying to update ROM from ISSM. But it did work properly from the command line, I think I had to reset the board manually before running the openocd command.

[mgolu]

Hi SergeyK,

regarding to:

"If I understand correctly, you're using the Intel Quark D2000 board as the JTAG interface, when perhaps you can connect RST_N on your board to Intel's board reset switch SW1 pin 1."

Yes I'm using D2000 dev kit as programmer and I took RST signal from jumper J22 pin 3 (RESET) and I connect it to my board to reset button - it is correct as I think yes ?

I'm wondering because now when I'm trying to flash ROM I can do this correctly but I need press RESET button on my board (even when J22_3 is connected to my board reset) on the begin of ROM flashing process.