topic Re: Mini Flex bus for external NOR Flash in MQX Software Solutions

Mini Flex bus for external NOR Flash

CarlFST60L — Tue, 14 Dec 2010 13:13:32 GMT

Hi,

Has anyone got any 'standard' NOR flash code they can share?

I am reading through AN3854 to work out how to do it all, but this app note does not cover flash, only SRAM/MRAM. I am not really sure how best to handle the page erase for flash, or the general methods of implementation.

Thanks,

Carl

Re: Mini Flex bus for external NOR Flash

PetrL — Mon, 03 Jan 2011 05:49:49 GMT

Hi,

The can MQX handle various external NOR flash devices using FLASHX driver - see the "c:\Program Files\Freescale\Freescale MQX 3.6\mqx\source\io\flashx\" directory for routines for supported NOR flash types.

You have to initialize FLASHX driver correctly using FLASHX_INIT_STRUCT config structure to support ext. flash memory - use "c:\Program Files\Freescale\Freescale MQX 3.6\mqx\source\bsp\m52277evb\init_flash.c" in M52277EVB BSP as example.

Regards,

PetrL

Re: Mini Flex bus for external NOR Flash

CarlFST60L — Mon, 10 Jan 2011 12:08:52 GMT

Great, there are a few options for us.

Thanks.