Oli,

I am not an BSL expert, but I asked the guy that wrote them and here is his response:

The BSL applications can be written to flash and autostarted using U-boot. I have burned one of them to flash in place of U-boot, and that works just fine as well.

As for the question of gnueabi vs eabi, visit [1]. TI uses the compiler that is meant for linux. Yes, U-Boot is built using that compiler, but you have to bend the compiler to your will to do that. Much easier to just use the compiler meant for the task at hand.

Mike

[1] http://www.codesourcery.c...arm/portal/kbentry34

I hope that helps.
Thanks

Thanks Mike for the first support. I was able to execute my own test using U-boot.

The main part of the test turns the user LED 3 on and off for several times:
for (i = 0; i < 50; i++)
{
OUT_REGL(GPIO1_MODULE_BA+GPIO_SETDATAOUT,USERLED3_OFFSET); //UserLED3=GPIO11=uP_emu0
OUT_REGL(GPIO1_MODULE_BA+GPIO_CLEARDATAOUT,USERLED3_OFFSET);
}

This test works nearly fine except that the LED is switched on for nearly 850ns. I expected something much shorter!

I'm aware that the application is loaded into DDR and there are several clocks with prescalers that effect the interface access time. I need to access the gpios much faster but I dont know where to start!

Could anyone give me a glue?

Regards,
Oli

Oli,

I recommend the TI 2e2 site (http://e2e.ti.com/). They have apps engineers assigned to this product.
Thanks