Posted on June 25, 2014 at 19:36Hello all,
I am looking for some suggestions or help on locking the Flash ROM during read and writes. I am using STM32Cube with FreeRTOS and have implemented the FS OTG MSC for accessing the Flash ROM on my board (it is a custom board) and I have implemented the FatFS to work so that I can read files that are dropped onto the Flash via the USB. I have issues with the Flash ROM access when they try to write or read at the same time, example I am writing to the Flash a configuration file and I plug in the USB, it will corrupt the Flash where it will need to be formatted. I have implemented a Semaphore and want to block the during the whole transaction of the USB. The FatFS was an easy implementation since I will just get the semaphore handle perform my FatFS calls and release the semaphore. I am looking for a way to do that with the USB. Any suggestions or examples will be greatly appreciated.
Thanks in advance,
George
