09:38 <ysionneau> if someone wants to help me with my ecp5 sspi programming issue ... here is a pulseview dump of the spi link ... https://limewire.com/d/8Xdrk#iWBdBVyut2 :)

09:38 <ysionneau> this can be opened with pulseview

09:38 <ysionneau> (and you can add a spi decoder)

10:02 <trabucayre> Have you a link to a board to use for this task?

10:21 <ysionneau> trabucayre: it's this board: https://gitlab.com/yannsionneau/SucreLA/-/tree/main/hw/hydrasucrela?ref_type=heads ^^

10:21 <ysionneau> I've ordered (and received) 2 assembled pcb

10:22 <ysionneau> and it's plugged to an HydraUSB3 which acts as "programmer" : https://github.com/hydrausb3

10:42 <ysionneau> the host code I am using to try to program via SPI : https://gitlab.com/yannsionneau/SucreLA/-/blob/main/software/host/program_fpga.c?ref_type=heads

10:43 <ysionneau> it's basically sending USB commands to HydraUSB3 to ask it to do SPI read/writes

10:43 <ysionneau> and it gives the waves dumped in the shared pulseview session

10:43 <ysionneau> the wave "look good" ... but I bet something is wrong but I don't know what...

10:46 <ysionneau> and running the program prints: https://pastebin.com/f5MfVKR5

10:51 <ysionneau> I think this board can be used to test SSPI configuration : https://www.latticesemi.com/products/developmentboardsandkits/ecp5evaluationboard

10:51 <ysionneau> it exposes the CFG[2:0] pins on DIP switch

10:51 <ysionneau> as well as SPI pins

13:53 <trabucayre> I have the lattice ECP5 EVN but not hydra

13:54 <trabucayre> In this mode ECP5 act as a "sort-of" SPI device?

15:13 <ysionneau> yes, as a SPI slave

15:14 <ysionneau> this PDF "explains" how to program it : https://www.latticesemi.com/view_document?document_id=50462

15:14 <ysionneau> it gives the flowchart and the commands , and wave schemas

15:15 <ysionneau> if you manage to get the SSPI (slave spi) working with ecp5 Evn, with for instance some ftdi that allows doing SPI, I would be interested in having the logic analyzer waves

15:15 <ysionneau> so that I can compare with my setup

15:15 <ysionneau> and fix my setup :)

15:16 <ysionneau> (this way you don't need the HydraUSB3)

15:17 <ysionneau> if I understand correctly openFPGALoader already supports --spi programming for some boards?

15:17 <ysionneau> but not for LatticeECP5 (only ice40 I think)

15:18 <ysionneau> or maybe the --spi is for programming flash companion chips only?

15:43 <trabucayre> SPI support is for ice40, gatemate, efinix

15:43 <trabucayre> or a SPI Flash directly connected :)

15:43 <trabucayre> for ice40 openFPGALoader is able to program the flash or the ice40

15:45 <trabucayre> if you are lucky SSPI for ECP5 and ICE40 is more or less the same :)

19:09 <ysionneau> I compared a bit instructions between ecp3 and ecp5 and there were differences

19:09 <ysionneau> so I'm expecting ice40 to be different, but maybe

19:09 <ysionneau> I'll check tomorrow :)

21:30 <ysionneau> I've read the iCE40 doc', and the configuration is really different

21:31 <ysionneau> there is no "command" you just drive some reset pin, then you send the bitstream data, then wait for DONE=1 and that's it

21:32 <ysionneau> it's not that surprising considering Lattice bought the iCE40 products when they acquired SiliconBlue Technologies