Кстати, может не в курсе, но есть Keil для некоммерческого
использования бесплатно. MDK-Community is the full-featured,
non-commercial software development suite for Cortex®-M-based
microcontrollers.
Click Get LIC via Internet..., then click OK to register the product.
The License Management page on the Keil web site will open.
Enter the following serial number in the Product Serial # (PSN) field:
42B2L-JM9GY-LHN8C
Complete and submit the rest of the form.
You will receive a License ID Code (LIC) to your email address.
Enter this in the New License ID Code (LIC) field in ?Vision and click 'Add LIC'.