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| TomKeddie | Hey Guys, the 0xc3/0x43 usb debug commands mentioned at teardown2019 look cool. I'm looking for their implementation, was expecting to see them in usb-dev.c but couldn | 15:36 |
|---|---|---|
| TomKeddie | 't find them in micropython or foboot | 15:36 |
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| xobs | TomKeddie: They're never seen by the CPU. That's why we can rebuild it with the CPU removed. | 15:43 |
| TomKeddie | Ah so I should be looking in valentyusb, thanks! | 15:44 |
| xobs | https://github.com/im-tomu/valentyusb/blob/master/valentyusb/usbcore/cpu/usbwishbonebridge.py | 15:45 |
| tpb | Title: valentyusb/usbwishbonebridge.py at master · im-tomu/valentyusb · GitHub (at github.com) | 15:45 |
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| TomKeddie | Ok so the code is there in my arty port (debug=True) but it looks like I'm getting no response, will have to dig deeper. I have etherbone too, will these conflict? | 15:56 |
| TomKeddie | ./wishbone-tool --pid 0x70b1 0xe000c800 | 15:57 |
| TomKeddie | Opening device 001 on bus 014 | 15:57 |
| TomKeddie | No device available, pausing | 15:57 |
| xobs | Is that your Product ID? What does "lsusb" show you? | 15:57 |
| xobs | Or dmesg, for that matter. | 15:57 |
| xobs | You might try just implementing DummyUSB, which has no CPU. That'll let you validate the hardware works. Then you can add in the CPU. | 15:58 |
| xobs | For DummyUSB, the current PID is 0x5bf0. | 15:59 |
| TomKeddie | Yep it's the right pid/vid, can't recall if I overwrote the foboot default or not. | 16:01 |
| TomKeddie | [946428.936185] usb 1-4.1: New USB device found, idVendor=1209, idProduct=70b1, bcdDevice= 1.01 | 16:01 |
| TomKeddie | [946428.936188] usb 1-4.1: New USB device strings: Mfr=1, Product=2, SerialNumber=0 | 16:01 |
| TomKeddie | [946428.936190] usb 1-4.1: Product: Fomu DFU Bootloader | 16:01 |
| TomKeddie | [946428.936192] usb 1-4.1: Manufacturer: Foosn | 16:01 |
| TomKeddie | Bus 001 Device 014: ID 1209:70b1 Generic Sutajio Ko-Usagi (Kosagi) Tomu | 16:01 |
| xobs | Huh. The product name there doesn't list the version information on it at all. Are you using an older version of valentyusb that used 0xc0/0x40 as the magic byte? | 16:03 |
| xobs | That was the original value, but then I discovered Microsoft makes 0xc0 requests normally during enumeration. | 16:03 |
| TomKeddie | I need to update to 1.8.1 of foboot anyway, I'll do this later today and see how I go, thanks for the advice. | 16:22 |
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