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Altera_Forum
Honored Contributor
Honored Contributoraccess epcs as mtd to program FPGA
Hello all,
until now i use *.flash to program fpga --- Quote Start --- nios2-flash-programmer --epcs --base=0x03001800 fpga_sof.flash --- Quote End --- now i want to use epcs as mtd... according to altera wiki tuto, i have to generate *.img --- Quote Start --- # your_fpga.img is msb<->lsb byte reversed from rbf --- Quote End --- how to reverse MSB LSB from rbf? :/ Thanks for help2 Replies
Altera_ForumDepends how you want to do it. If you are using a CPU and you're only dealing with 8 bits then you can just make a LUT in memory using an array where 0x01 would become 0x80 and so forth.
In my project I read a buffer size from the .rbf file on a USB drive. I then reverse the bytes in the buffer and then write the buffer to the EPCS device. I then call the remote update function, which loads the new FPGA image into the FPGA. If this is not what you want to do, then you need to be a bit more specific in what exactly you are trying to accomplish.- Altera_Forum
more specific !! i just want to change program method
updating the sof using epcs as mtd --- Quote Start --- cp your_fpga.img /dev/mtd0 # assume epcs is mtd0# your_fpga.img is msb<->lsb byte reversed from rbf and send from ftp --- Quote End ---
