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| Guest19 | Hi is here somebody working with the lattice ecp5 fpga? | 06:56 |
|---|---|---|
| tnt | yeah | 07:05 |
| Guest19 | I just bought an ecp5-evaluation board from lattice, and i want to program it with open-source tools, because in one year i have to pay for lattice-diamond to program the board | 07:08 |
| Guest19 | now i installed yosys and nextpnr and set up prjtrellis. So far the most things work | 07:09 |
| Guest19 | but when i program the board, it seems to stop after a few seconds. | 07:09 |
| Guest19 | i have flashed a blinky example, but it blinks only 3 times and stops then | 07:10 |
| Guest19 | how would be your approach to debug this behaviour? | 07:12 |
| Guest19 | Or is there any other place, where i could get help? | 07:20 |
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| xiretza[m] | that's really weird - it does work fine with lattice tools, right? | 07:46 |
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| Guest19 | i didn't try yet | 07:50 |
| Guest19 | i have installed the lattice programmer already, but that doesn't find the board. I'am going to install lattice diamond now (i got an 1 year nodelocked license for the board) | 07:51 |
| Guest19 | another wierd thing is, if i press the reset button, the demo-program starts again (shouldn't this be erased after first flash?) | 07:56 |
| xiretza[m] | not unless you overwrite the SPI flash, by default programming the FPGA only writes the configuration to SRAM | 08:03 |
| Guest19 | ah yes makes sense | 08:05 |
| Guest19 | hmm can't get lattice diamond so fast, because there is an error on the licensing page ... | 08:19 |
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| Guest19 | i got disconnected ... did sombody say something in between? | 09:03 |
| xiretza[m] | nope | 09:08 |
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| thardin | is it possible to have yosys synthesize to discrete 74xx logic? | 11:37 |
| thardin | I don't see anything readymade for it | 11:37 |
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| gatecat | thardin: https://github.com/Ravenslofty/74xx-liberty | 13:31 |
| thardin | sounds like the opposite of what I'm after (: | 14:19 |
| thardin | or maybe not | 14:20 |
| tnt | It does what you want, however the synthesis script is outdated and doesn't work with newer yosys AFAICT | 14:25 |
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| thardin | ic_count.py doesn't seem to get the count right for counter.v | 14:40 |
| thardin | which generates two 74161's but the script says 8 | 14:40 |
| thardin | looks like it might come in useful anyway, thanks | 14:46 |
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| lofty | You know I'm here to ping for help, right? | 17:57 |
| thardin | I was asking for a friend, but he figured out another solution to his problem | 18:05 |
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