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Altera_Forum
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13 years ago

programming cyclone IV with microcontroller

Hi this is franticAF and this is my first post. I'm working on board where an Altera Cyclone IV EP4CE6E22I7N is mounted (with attached flash memory EPCS4). A microcontroller is also present in ...
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Altera_Forum
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13 years ago

Since the config signals are not connected to the MCU, your only other solution is to re-write to the flash through the FPGA. This can be accomplished using the Cyclone IV remote update feature. Since you already have an MCU, you do not need to have Nios running in the FPGA.

I have never used remote update but it should do exactly what you want. You can read about it in the Cyclone IV manual. Also look up the ALTREMOTE_UPDATE megafunction.