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| emeb_mac | tnt: have you tried to use SB_SPI in up5k before? when I try I get the following error in nextpnr: ERROR: cell type 'SB_SPI' is unsupported (instantiated as 'uut.usysbus.spiInst0') | 01:51 |
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| emeb_mac | this despite the fact that nextpnr reports SB_SPI as one of the available cells in the utilization report. | 01:52 |
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| emeb_mac | daveshah: is the SB_SPI cell supported in up5k? I'm getting an error that it's not when I try to use it. | 05:24 |
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| tnt | emeb_mac: mmm, indeed looks like nextpnr is lacking support for it :/ | 05:54 |
| emeb_mac | tnt: weird | 05:57 |
| emeb_mac | esp. since it's listed in the utilization report | 05:57 |
| tnt | The usage report is based on the chipdb, but you still need some code to support placing it. I'll see if I can add support for it. | 05:58 |
| emeb_mac | :) | 05:58 |
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| Forty-Bot | is there a way to only preprocess? | 20:03 |
| Forty-Bot | ...and I have discovered -ppdump | 20:04 |
| cr1901_modern | TIL | 20:05 |
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| davos | hey, I am using an ice40 ultra plus, trying to get the SPI IP block to work. I read through notes about ultra plus on the icestorm and it says there are 4 SPI_ENABLE_* signals. Wondering how to enable the SPI IP block in verilog? Is there an example anywhere for setting that type of signal? | 23:18 |
| tnt | davos: https://github.com/smunaut/nextpnr/commit/716b371ab92688993d0606e69b93030e0a3864fe | 23:19 |
| tpb | Title: ice40: Add support for SB_I2C and SB_SPI · smunaut/nextpnr@716b371 · GitHub (at github.com) | 23:19 |
| tnt | (not hw proven yet ... I wrote that like 1h ago) | 23:19 |
| emeb | davos: I'm trying tnt's patch for nextpnr right now - it seems to build OK but I need to test it further. | 23:38 |
| emeb | here's how I instantiated it -> https://pastebin.com/HWPTaQ7b | 23:39 |
| tpb | Title: // system_bus.v - wrapper for wishbone master and system bus IP cores // 03-21- - Pastebin.com (at pastebin.com) | 23:39 |
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