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| jeandet_ | Hello, I can't get the SD card working on the ULX3S, I tried several thing, I even desoldered the ESP32, tried on others IOs with another connector. I'm using LiteX and build with Yosys/Trellis provided in OSS-CAD-Suite. It always fails with init. | 08:13 |
|---|---|---|
| Flea86 | jeandet_: Were you trying using spi or full sd mode? | 08:35 |
| jeandet_ | Mostly SD mode | 08:36 |
| Flea86 | I see. I have full sd mode working successfully with ECP5 here, though I do not use ulx3s platform | 08:37 |
| Flea86 | Does spi mode work? | 08:37 |
| Flea86 | I started off with spi mode initially myself | 08:37 |
| Flea86 | @jeandet_ | 08:39 |
| jeandet_ | You can init the SDCard with bare metal code/driver? | 08:39 |
| Flea86 | I think I used linux-on-litex framework to get up and running | 08:41 |
| Flea86 | wait no, I did also try compiling a baremetal example that loaded from sd | 08:42 |
| Flea86 | I cannot recall what mode that used however | 08:42 |
| Flea86 | some spinning torus example or something :) | 08:43 |
| jeandet_ | Which also means, you could get the BIOS to init the SD card | 08:43 |
| Flea86 | Correct | 08:43 |
| Flea86 | Let me check something | 08:43 |
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| Flea86 | jeandet_: When you compile your SoC core, are you using --with-spi-sdcard option? | 08:45 |
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| Flea86 | I would first try compiling your SoC using spi mode first | 08:46 |
| Flea86 | -first :) | 08:46 |
| jeandet_ | I did something similar, I have a wrapper around ulx3s target and manually call `self.add_spi_sdcard(software_debug=True)` | 08:47 |
| jeandet_ | But I only tested SPI mode with default BIOS | 08:47 |
| Flea86 | Right OK. Just so you know, I used vexriscv core for my evaluation | 08:48 |
| Flea86 | jeandet_ "But I only tested SPI mode with default BIOS" and does that work? | 08:48 |
| jeandet_ | In fact with a custom code and calling `spisdcard_init` seems to work | 08:49 |
| jeandet_ | With the BIOS it always failed to call the sdcard init CMD | 08:49 |
| jeandet_ | Note that I did those tests before removing the ESP32 which might have been the culprit then | 08:50 |
| Flea86 | I do not recall needing to manually call self.add_spi_sdcard() and just used the option switch | 08:50 |
| Flea86 | Ah okay | 08:50 |
| Flea86 | Perhaps that was the issue | 08:50 |
| jeandet_ | https://github.com/enjoy-digital/litex/issues/1712 | 08:51 |
| Flea86 | I am not familiar with ulx3s myself | 08:51 |
| jeandet_ | yeah, so at least SPI mode works now \o/ | 08:51 |
| Flea86 | but I recall the sdcard i/o is shared with esp32 pins | 08:51 |
| Flea86 | or something | 08:51 |
| jeandet_ | Yes exactly | 08:53 |
| jeandet_ | With SPI mode I don't see any function to write a block is this intended only for reading SD cards? | 08:54 |
| Flea86 | jeandet_: This is where I am currently https://dillo-browser.github.io/gallery/img/fpga-rv32.jpg :D | 08:55 |
| Flea86 | My biggest problem however, is getting buildroot to produce what I want/need (still learning..) | 08:58 |
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