3 Replies Latest reply on Nov 27, 2014 7:50 AM by pietro.troi

    M25P40 sector erase from control center

    kaiyu.lin

      Hi! I am trying to do a sector erase of the FX3 DVK's flash.

         

      Having programmed the FX3 with USBFlashProg.img and setting the following parameters on Control center:

         

         6. Erase SPI flash sector

         

            bmRequestType = 0x40

         

            bRequest              = 0xC4

         

            wValue                   = 0x0001

         

            wIndex                   = SPI flash sector address (Each sector is assumed to be of 64 KB and the byte address is

         

                                                computed by multiplying wIndex by 65536)

         

            wLength                  = 0x0000

         

            No data phase is associated with this command.

         

         

      It fails to erase but actually it did correctly. How is it possible?

         

      I didn't quite understand how to set the wIndex to erase the remaining 7 sectors neither.

         

      Help me please :)

         

       

         

      Thanks!

        • 1. Re: M25P40 sector erase from control center
          kumr

          You should set the parameters as mentioned in the README file.

             

          wLength                  = 0x0000

             

          No data phase is associated with this command

             

          So, set "Bytes to Transfer" to 0

             

           

             

          I didn't quite understand how to set the wIndex to erase the remaining 7 sectors neither.

             


          The wIndex value will select the "sector" to erase. SPI flashes are organized into sectors (typically of 256 bytes each). Any write or erase is done on sectors and the flash will commit your writes to memory after the PAGE PROGRAM or ERASE cycles. And this sector index is selected using the wIndex field. Read your flash's datasheet to know more.

          • 2. Re: M25P40 sector erase from control center
            pietro.troi

             Hi scutifier

               

             

               

            i'm trying to erase/write a flash (N25Q128A by Micron) on a custom design board using Control Center. I've lost the USBFlashProg provided by Cypress i was working on... Could you please update it ?

               

             

               

            thanks

               

             

               

            Bank

            • 3. Re: M25P40 sector erase from control center
              pietro.troi

               No need to post. I've found it.