At this early stage of development I am getting a hard fault at the first attempt to read the FLASH0.FCON register.
In the XMC4500 reference manual I see the statement...
"FCON is a Privileged Mode protected register."
... so maybe an unlocking sequence is required. But I am unable to locate any information.
Workalot.
Hi,
The FLASH0->FCON, register is accessed in the SystemCoreSetup() function in system_XMC4500.c file. After reset you are in privilege mode. If you do not explicitly switch to unprivileged mode, you should be able to access the register.
Can you show your code?
Regards,
Jesus
The views expressed here are my personal opinions, have not been reviewed or authorized by Infineon and do not necessarily represent the views of Infineon.
Thank you jferreira.
Yes, as you say, privileged mode is about when entering the reset handler and all registers should be accessible. So after a few days of being elsewhere minded, a return to the problem. Code that occurs before the call to SystemCoreSetup() has been selectively made inactive until the offending code was identified. Why it is doing so is for further investigation and possibly another forum thread.
Workalot
The faulting code is a consequence of not RTM. XMC4000 lacks bit-banding.
All content and materials on this site are provided “as is“. Infineon makes no warranties or representations with regard to this content and these materials of any kind, whether express or implied, including without limitation, warranties or representations of merchantability, fitness for a particular purpose, title and non-infringement of any third party intellectual property right. No license, whether express or implied, is granted by Infineon. Use of the information on this site may require a license from a third party, or a license from Infineon.
Infineon accepts no liability for the content and materials on this site being accurate, complete or up- to-date or for the contents of external links. Infineon distances itself expressly from the contents of the linked pages, over the structure of which Infineon has no control.
Content on this site may contain or be subject to specific guidelines or limitations on use. All postings and use of the content on this site are subject to the Usage Terms of the site; third parties using this content agree to abide by any limitations or guidelines and to comply with the Usage Terms of this site. Infineon reserves the right to make corrections, deletions, modifications, enhancements, improvements and other changes to the content and materials, its products, programs and services at any time or to move or discontinue any content, products, programs, or services without notice.
Reply With Quote
Bookmarks