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Jay_jayjay | Does anyone have any idea how to add more GPIO to the Fomu? | 22:07 |
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tnt | you'd have an easier way re-spinning a new board ... | 22:10 |
Jay_jayjay | true...... | 22:11 |
Jay_jayjay | well, I need to have some way to interact with my primative circuit | 22:12 |
Jay_jayjay | that doesn't involve some weird USB/whatever | 22:12 |
tnt | if you're not using USB you can use D+ / D- as gpio :) | 22:13 |
tnt | if you don't use SPI you can also just keep CS high for the flash to be disabled and then you can reuse clk/mosi/miso. | 22:14 |
Jay_jayjay | but I need to program... | 22:14 |
tnt | you can have those IO connected/disconnected if/when you program. | 22:15 |
tnt | but as I said ... pretty much easier to spin a board. | 22:15 |
Jay_jayjay | ok, ig that works | 22:15 |
Jay_jayjay | yeah, ig this is more for SW oriented people | 22:21 |
Jay_jayjay | i could use the RGBLED | 22:21 |
tnt | beware that the RGB led signals are open drain. Not normal IOs. | 22:23 |
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Jay_jayjay | ... I suppose other fpgas don't have that many ios either | 22:26 |
tnt | Well they have more than 4 :) | 22:26 |
tnt | Even this FPGA has more ... it's just the board that breaks out very few of them. | 22:26 |
Jay_jayjay | yes | 22:38 |
Jay_jayjay | also, do you know the ordering of SB_LUTs? | 22:38 |
tnt | ordering ? | 22:38 |
Jay_jayjay | ok, i figured it out | 22:41 |
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