GPL Exception Text In addition, as a special exception, the copyright holder of ChibiOS/RT, gives You the additional right to link the unmodified code of this Program with code not covered under the GNU General Public License ("Non-GPL Code") and to distribute linked combinations including the two, subject to the limitations in this paragraph. 1. Non-GPL Code permitted under this exception must only link to the unmodified code of this Program through those well defined interfaces identified as "Approved Interfaces". 2. Every copy of the combined work is accompanied by a written statement that details to the recipient the version of ChibiOS/RT used and an offer by yourself to provide the ChibiOS/RT source code should the recipient request it. 3. The combined work is not itself an RTOS, scheduler, kernel or related product. 4. The combined work is not itself a binary library intended for linking into other software applications. The Approved Interfaces 1. The files of Non-GPL Code may include the unmodified ChibiOS/RT distribution header files contained under: ./os/kernel/include ./os/hal/include ./os/hal/platforms ./os/various without causing the resulting work to be covered by the GNU General Public License. 2. The files of Non-GPL Code may link to the unmodified ChibiOS/RT distribution files contained under: ./os/kernel/src ./os/hal/src ./os/hal/platforms ./os/various without causing the resulting work to be covered by the GNU General Public License. 3. The files of Non-GPL Code may link to, or include, the modified or unmodified ChibiOS/RT distribution files contained under: ./os/kernel/templates ./os/hal/templates ./os/ports ./boards ./demos without causing the resulting work to be covered by the GNU General Public License. Only the copyright holder of ChibiOS/RT may make changes or additions to the list of Approved Interfaces. You must obey the GNU General Public License in all respects for all of the Program code and other code used in conjunction with the Program except the Non-GPL Code covered by this exception.