CM-T335: WEC7: Getting Started

The CompuLab WinCE demo image for the CompuLab CM-T335 System-on-Module / Computer-on-Module is based on standard WEC 7.0.

Creating a bootable SD card

The TI SDCard boot utility does not work well on computers running Windows 7, use Windows XP (WinXP mode in Windows 7 works fine too.)

• Download the latest WEC 7.0 runtime image for CM-T335 and unzip the file.
• Use the TI_SDCard_boot_utility to create a disk with partition table geometry compatible with the OMAP3 boot ROM.

Follow the steps below:

1. Insert the SD card into an SD-Reader attached to the desktop computer (an SD-card is supplied with the CM-T335 evaluation kit).
2. Launch the TI_SDCard_boot utility (located in the Utils folder).
3. Choose the drive letter of the SD reader.
   
   
4. Select the MLO file from the LiveDisk folder.
   
   
5. Select the rest of the files in the LiveDisk folder.
   
   
6. Select the FAT 32 filesystem and 4096 bytes allocation unit size in the Format Removable Disk pop-up and start the SD card format process.
   
   
7. After the formatting is complete, the utility automatically starts to copy the files to the SD card.
8. Wait for the "Copying files done" message to appear in the debug output box.
   
   
9. Your SD card is now ready to boot the CM-T335.

Booting the system

• Install the bootable SD card on the CM-T335 micro SD slot (P23).
• Press and hold "Alt. Boot Button", near J3 connector.
• Power on the device. A synthetic splash-screen (4 colored squares) will appear on LCD display within a few seconds.

Flashing the image into NAND flash memory via SD card

• In order to run the image from NAND flash, XLDRNAND.BIN/EBOOTNAND.BIN/NK.bin must be written into NAND FLASH via SD card.

• Copy EBOOTND.bin/XLDRNAND.bin/NK.bin to SD card from LiveDisk_SD folder to the bootable SD card created.

• Connect the CM-T335 to your desktop serial port with a cable is supplied in the evaluation kit. If your desktop does not have a serial port, it is possible to use a standard USB to serial adapter.

• Start a terminal emulation software on the host PC using following settings:
  • Baud rate: 115200
  • Parity: None
  • Data bits: 8
  • Stop bits: 1

• To flash XLDR/Eboot/nk.bin from SD card:

1. Turn on the CM-T335 system and hit space to enter the Eboot's configuration menu:

2. Enable flashing by select following option from Eboot menu:

   [Flash Management] -> [8]Enable flashing NK.bin

3. Change the SDcard settings for image name to eboot.bin/xldrnand.bin/nk.bin from following Eboot Menu:

   [SDCard Settings] -> [Enter Filename]

4. Select boot from SD card:

   [Select Boot Device] -> [NK from SDCard File]

• If NK.bin is loaded, after flashing, the program will continue to boot Kernel. If XLDR/EBoot is loaded, reboot is needed.

2 reboots are needed in order to complete the process.

Do not reset or power off the CM-T335 during the installation process! Doing so may result in a disabled module!

See also

• SD/MMC format for OMAP3 boot