Posted on May 17, 2011 at 14:31The internal flash can be used for general storage, however be aware of it's erase cycle limits, blocking size and the serious stalling it causes to the CPU when code is executing from FLASH. The latter being an almost fatal problem for any process requiring low interrupt latency.
Become familiar with how to program the flash memory (read the documentation, look at the examples), and realize how that process drastically differs from a generic bus write cycle to say RAM or peripherals. It should be clear at that point why a DMA write to flash is a recipe for failure.
