支持与服务: 概述; 客户培训; 技术支持; 咨询项目; 汽车电子

Knowledge Base

BSPs and drivers

Community resources

Product documentation

Questions?

How to access to flash memory by application

________________________________________________________________________

Applicable Environment

________________________________________________________________________

Topic: How to access to flash memory by application
SDP: 6.3.0SP2
Target: Any supported target

________________________________________________________________________

Recommendation

________________________________________________________________________

1) Disable any drivers currently managing the flash memory area.

2) Call ThreadCtl() to gain I/O privileges
3) Map the flash memory area into the process address space using mmap_device_memory()

4) It is recommended to use the in*() anda out*() calls to perform the actual I/O operations using the pointer returned by mmap_*()

________________________________________________________________________

NOTE: This entry has been validated against the SDP version listed above. Use caution when considering this advice for any other SDP version. For supported releases, please reach out to QNX Technical Support if you have any questions/concerns.

________________________________________________________________________

Related Attachments

None Found

Please contact us with your questions or concerns.