Posts by fs-support_DB

You have to connect the JTAG /TRST pin to the system reset to get the PicoMOD running (see page 12 of starter-kit schematic, /TRST connected to /PONRES through R33).
The other JTAG pins can be left unconnected.

- Set the display voltage to 3.3V, the datasheet for all of the 6.5" OPTREX TFT displays says 3.3V or 5V.
- Don't use additional connectors between NetDCU and display.

The length of the cable depends on the quality of the cable and connectors, your EMC requirements, pixel clock, and on your display.
There is no exact maximum length of the cabel.

For more than 30cm cable length you should use an LVDS solution.
The quality is the same, since LVDS does not alter the display signals.

zu 1: dann ist mit hoher Wahrscheinlichkeit das Filesystem defekt. Bei häufigem Schreiben ist die Lebendauer vom NAND-Flash sehr schnell erreicht.
zu 2: nein, aber von Ramtron gibt es FRAM Bausteine mit bis zu 256kBit die seriell angeschlossen werden (I2C, SPI). Die können fast unendlich oft beschrieben werden und verlieren den Inhalt bei Spannungsverlust nicht.

Benutzen Sie ein Tool wie CabWUZ oder WinCE Cab Manager von http://www.ocpsoftware.com um die Installationspfade für die Software herauszufinden und evtl. zu verändern. Installieren Sie dann das neue Paket oder kopieren Sie die Dateien nach der Installation von Hand in die FFSDISK. Evtl. müssen Sie in der Registry noch ein paar Pfade ändern.

You have deleted the EBOOT bootloader.

After starting the NetDCU8 press 'd' in DCUTermi.

Then select 'Transmit Binary File ..." in the File menu and select EBOOT8_xxx.NB0 where xxx ist the version you want to install.

After the download press 'f' to save the bootloader to flash.

Reboot the NetDCU8 and when prompted to enter the MAC address, use the address on the sticker on the NetDCU8.

Don't forget to execute 'mf' and 'l1' before downloading to store the kernel to flash and to start the kernel.

Now you can install an new kernel via USB.

Acrobat Reader for WindowsMobile should work, but you need a kernel with aygshell.dll support. Please contact sales for details.

The watchdog in the NetDCU8 is the processor internal watchdog. There is no external signal available.

Im Prinzip ist es egal, welche Schaltung man verwendet. Man muss nur darauf achten, dass die Kapazität der Schutzdioden nicht zu hoch ist. Daher empfehlen wir, sich an das Dokument USB-ESD-Protection zu halten. Dort wird auch noch zusätzlich ein Gleichtaktunterdrücker verwendet, um die Störfestigkeit zu erhöhen.
Die Bezeichungen USBP und USBN beziehen sich auf die USB-Datenleitungen, die Beschaltung ist für Host und Device die gleiche.

Die Anschlüsse der NetDCU sind im Regelfall ohne weitere Entstör- und Filterbausteine herausgeführt, d.h. bei den seriellen Schnittstellen kommen die Signale direkt vom Pegelwandler.

When using '\n' the screen must be scrolled a lot if the text ist output to an console window. This uses a lot processor resources. Without '\n' the screen must be scrolled not so often.

The hardware revision is printed on the board next to J1 (Power)
It is

NetDCU8
REV. 1.00
(c) 2004

for revision 1.00 (with COM1 not working)
and

NetDCU8
REV. 1.10
(c) 2005

for the current revision 1.10

For revision 1.00 you must use nboot8_xx.rev100.bin or else you will not be able to step into the bootloader.
For revision 1.10 you can either use nboot8_xx.bin or nboot8_xx.rev100.bin.

canread always sets the acceptance mask to 0xfff (or 0x3ff for older versions) regardless of the can mode. This leads to problems when using canread with 2B mode.

In standard mode the mask bits directly correspond to the 11 identifier bits. Only the upper 8 bits are used for the mask.

In 2B mode a 32 bit mask is used. The usage is as follows:

standard frame
Bit 21-31: 11 bit identifier
Bit 20: RTR
Bit 16-19: not used (set to 1 for future compatibility)
Bit 8-15: first data byte
Bit 0-7: second data byte

extended frame
Bit 3-31: 29 bit identifier
Bit 2: RTR
Bit 0-1: not used (set to 1 for future compatibility)

With the mask set to 0xfff or 0x3ff not all messages are accepted. To set the mask for canread you have to start canread first and then use cancmd to change the mask.

For a detailed explanation of the acceptance filter see the SJA1000 datasheet and application note AN97076 from Philips.

It seems that the datasheet is not correct. When you set pin 32 (NC) to high level the problem should be solved.
On the TCG057QV1AA-G00 (QVGA) this pin is used to set a VGA compatibility mode when set to high.

Regards,

D. Baeder

Set 1 and 2 to ON and 3 to OFF for USB-Host on the lower USB connector.
Set 1 and 2 to OFF and 3 to On for USB-Device on the USB-Device connector.
USB-Device is the factory default on the NetDCU8 so you have to set DIP switches for it.
If you want to use 2xUSB-Host then see also this topic

Switch 4 is for the backup battery. If set to ON the battery is connected to the NetDCU.

If you connect two or more USB sticks they will be named "\Hard Disk2" "\Hard Disk3" and so on.

WindowsCE is very picky about USB sticks. Some work an some don't.
You have to try different USB sticks to find a working one.
To test, plug in the USB stick while the NetDCU is running a see if "\Hard Disk" appears. Then power off the NetDCU and switch on again while the USB stick is connected. "\Hard Disk" should appear in both cases.
And try exactly the stick you want to use for production before you buy large quantities, because different capacities or even different models from the same manufacturers with same capacity behave different.
Even between the NetDCU models there are differences. If you want to use the USB stick on the NetDCU8 then you must do the test on the NetDCU8.

We are using the Trekstore USB2.0 128MB stick on the NetDCU8. This one is delivered with the Starterkit.

Perhaps other users can tell what they are using.

In the processor data sheet the absolute maximum voltage of the RTC is 4.5V, the recommended voltage is 1.8V - 3.6V.
The backup voltage is fed through a diode with a voltage drop of 0.3V.
You can use a voltage higher than in our datasheet, but you will void the warranty.
The current for the RTC is 3uA. This Diagram shows that a standard CR2032 batterty has a lifetime of over 8 years at 3uA, the CR2430 on the StarterKit has over 10 years.

The WLAN functionality is now available in the kernel.
You can download the kernel from http://www.fs-net.de/download/bin

If the supply voltage on the NetDCU8 does not rise fast enough, no proper CPU reset is generated. If you experience such problems, ensure that the rise time is below 10ms and you have a constantly rising voltage (no drops).

If you want to use a WLAN card with the NetDCU8 you can use the "Go Wi-Fi! E300" from Socket or the SDW-820 from Spectec.
A WLAN enabled kernel is available on request.

Sometimes the backlight inverter adds noise to the analog touch signals. So the touchpanel driver never gets a stable signal. So no calibration is possible.
Try the calibration with the inverter disabled when pressing the touchscreen or put the touchpanel away from the display (away from inverter and lamp).