Forum Discussion
Occasional ContributorProgramming S25FL256 through Cyclone 10 with file from Processor
Hi,
signaltap waveform shows that you don't understand Avalon MM timing requirements. We see e.g. mem_read active while mem_ waitrequest is asserted which must never happen.
Imagine that mem_write starts a serial flash cycle with adress and data bits. Waitrequest indicates ongoing serial interface activity, next memory read/write can't happen before waitrequest is release. Similar problems exist with csr interface.
Occasional ContributorHi Fakhrul,
I can get the Remote Upgrade working fine, loading 2 images into the flash using Quartus and .sof files. BUT I want the 2nd image stored in flash to be a hex file that the FPGA receives via a connected processor. Is there any way to write a hex file into flash using just the FPGA and doesn't involve using a JTAG cable, Quartus, or external console?
FvMSuper Contributor
What's the relation between binary programming file in your first and hex file in your second post? Anyway you can write any data of your choice to serial flash using available IP. Transfer hex formatted programming data to FPGA is also possible, but you need to code hex to binary converter. Which interface (e.g. UART) do you want to use?- Jcole
I would like to have the option to rewrite the 2nd image stored in the flash that is visible to the remote update system. I can receive hex files serially or in bytes from the attached processor with no issue. When trying to explicitly use the Altera_nCS, Altera_Data0, and Altera_dclk pins connected to the FPGA to write to the flash, I get errors in Quartus about using the pins. I figured that I would need to use a built in IP to handle this communication, but from most of the documentation on the IPs they seem to need either a JTAG connection, a console setup, or Quartus to program the flash.
