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_florent_>
daveshah: thanks for the fixes, i'll try to have a better understanding of DQSBUFM and the others primitives
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whatnick>
ping daveshah ...
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whatnick>
Looking for a sample project for LFE5U-25F ( possibly MIPS/RISC-V core I can run micropython on)
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tpb>
Title: prjtrellis/examples/soc_versa5g at master · SymbiFlow/prjtrellis · GitHub (at github.com)
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daveshah>
That's a simple picorv32 based SoC
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daveshah>
What board are you running on?
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whatnick>
I have the FleaFPGA
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tpb>
Title: NextPnr build failure · Issue #49 · SymbiFlow/prjtrellis · GitHub (at github.com)
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whatnick>
Yes I have done picorv32 on Xilinix + Micropython, would like to do the same with the ECP5 board I have
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tpb>
Title: prjtrellis/Util.hpp at master · SymbiFlow/prjtrellis · GitHub (at github.com)
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daveshah>
Anyway, that SoC project should be a good place to start. Just change the device name in the Makefile and the pins in the LPF
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whatnick>
Looks like an OR here should do it "c != '\n'"
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tpb>
Title: prjtrellis/versa.lpf at master · SymbiFlow/prjtrellis · GitHub (at github.com)
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whatnick>
Will have to read the manual on the pins on the board ... what changes are common ?
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tpb>
Title: FleaFPGA-Ohm/FleaFPGA Ohm - Quickstart Guide Rev 0.11.pdf at master · Basman74/FleaFPGA-Ohm · GitHub (at github.com)
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daveshah>
So just change out all those pins to the pinout of that board
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daveshah>
Might be worth looking up an existing LPF for that board
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daveshah>
Probably need to remove the 14 disp pins as that board doesn't have the 14 seg display (the SoC demo doesn't use it anyway)
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whatnick>
Cool found the LPF
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whatnick>
##
***** ECP5 PIN DECLARATIONS
*****
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whatnick>
## USER LED;
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whatnick>
IOBUF PORT "n_led1" PULLMODE=NONE IO_TYPE=LVCMOS25 ;
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whatnick>
LOCATE COMP "n_led1" SITE "P2" ;
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whatnick>
.... etc.
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whatnick>
The board has an HDMI out
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whatnick>
I will fork pjtrellis and work on a soc_fleafpga example
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whatnick>
what is the syntax of the LPF file ?
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whatnick>
will open ocd will be okay push with this - ecp5-versa5g.cfg ?
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whatnick>
Okay I will be back ... off to lunch
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