What steps will reproduce the problem? 1. Got "cc2560_init_script.c" from http://processors.wiki.ti.com/index.php/CC256x_Downloads and "BTPSVEND.c" http://www.ti.com/tool/sw-dk-em2-2560b and put these into the directory /btstack-read-only/chipset-cc256x 2. In /btstack-read-only/eZ430-RF2560/example, ran the following command (for led_counter.c) make mspdebug rf2500 'prog led_counter.out' mspdebug rf2500 run Then on a separate terminal run screen /dec/ttyACM0 9600 The output text appears as shown below BTstack counter 0038 BTsBTt ur040BTacn 4BTackoe004 BTa coter0 BTacn 4BTacn 4BTacn 4 BTacn 47

What is the expected output? What do you see instead?

"led_counter.c" blinks the LEDs but the output text is jumbled.

What version of the product are you using? On what operating system?

My product is msp430-rf2560. I'm using Ubuntu 11.10.

Please provide any additional information below.

The btstack revision is 1361.

according to the original poster, this issue was caused by the local linux USB driver.