Port status

You may find more information about the status of the port on the Sam7 port page.


We will use the sam7_ex256_demo application. It runs on a Olimex SAM7-EX256 development board.

We'll assume you have

  • a working sam7-ex256 board,
  • a running OpenOCD daemon connected to it,
  • the MutekH source-tree in /path/to/mutekh,
  • working gcc & binutils for ARM. Using arm-unknown-elf target is the default, but you may use your own toolchain

Using a demo application

Demo application is located in trunk/mutekh/examples/sam7_ex256_demo directory.

To compile this application, go to a new directory and type:

$ make \
	   -f /path/to/mutekh/Makefile \
	   CONF=/path/to/mutekh/examples/sam7_ex256_demo/config_sam7 \

For more information about the meaning of the arguments, see BuildSystem.

Got the kernel

You should now have a tree of built objects on obj-simple-arm and two versions of the kernel:

The ELF binary kernel, it can be used for GDB or other debugging purposes
This is the file you may flash to the Sam7 through openocd.


You may connect to the board through the first UART, 38400,8,n,1, and see:

  • A lua prompt asking for commands
  • Some messages when you touch the buttons or the joystick

On the lua prompt, you may try:

Will blit a default image to the LCD
lcd_blit_block(lba, x, y)
Blits a 18x18 block from SD/MMC to the LCD at x,y. it is 18x18 because it fits in a 512-byte block of SD/MMC. Encoding is packed 12-bit RGB-444.
Sets the backlight value (0/1)
Sets the backlight inversion mode (0/1)
Sets the contrast of LCD
Hexdump the SD/MMC block at lba
Reinitialize the SD/MMC card, this can be used when switching cards

You may find other commands pressing the <TAB> key (yes, there is completion).

Last modified 10 years ago Last modified on Dec 22, 2009, 3:53:49 PM