Hi, I searched sdcc archives about some usable & wroking USB library and I found some posts about gpled USB stack writtten by Alexander Enzmann ( file usb.zip found on nutsvols.com). This library was created using sdcc version 2.5 (according to some comments in the source files) and it contains precompiled hex files, too. I tried to recompile PICHID library example with my sdcc 3.0.2 and pic18f2550. Fisrt it fails with some casting erros with lines: outPtr = &deviceDescriptor; so I changed it to outPtr = (byte *)&deviceDescriptor; then compilation was succesfull. But it won't work. My usb host (Linux) reports errors after pic flashing & boot: usb 1-6: new full speed USB device using ohci_hcd and address 11 usb 1-6: device descriptor read/64, error -62 usb 1-6: device descriptor read/64, error -62
When I flashed old recompiled hex (mentioned above), it works and USB host reports: usb 1-6: new full speed USB device using ohci_hcd and address 15 usb 1-6: configuration #1 chosen from 1 choice HID device claimed by neither input, hiddev nor hidraw and lsusb reports new usb device: Bus 001 Device 015: ID 04d8:4541 Microchip Technology, Inc. I switched on some debug (printed via serial): Enable the module Device powered USB Test Startup Enable the module Device powered BusReset BusReset ProcessControlTransfer USTAT =0 SetupStage ProcessStandardRequest GetDescriptor DEVICE_DESCRIPTOR InDataStage bufferSize=18 ProcessControlTransfer USTAT =0x04 InDataStage bufferSize=0 ProcessControlTransfer USTAT =0 BusReset ProcessControlTransfer USTAT =0 SetupStage ProcessStandardRequest GetDescriptor DEVICE_DESCRIPTOR InDataStage bufferSize=18 ProcessControlTransfer USTAT =0x04 InDataStage bufferSize=0 ProcessControlTransfer USTAT =0 BusReset BusReset ProcessControlTransfer USTAT =0 SetupStage ProcessStandardRequest GetDescriptor DEVICE_DESCRIPTOR InDataStage bufferSize=18 ProcessControlTransfer USTAT =0x04 InDataStage bufferSize=0 ProcessControlTransfer USTAT =0 BusReset ProcessControlTransfer USTAT =0 SetupStage ProcessStandardRequest GetDescriptor DEVICE_DESCRIPTOR InDataStage bufferSize=18 ProcessControlTransfer USTAT =0x04 InDataStage bufferSize=0 ProcessControlTransfer USTAT =0 BusReset BusReset ProcessControlTransfer USTAT =0 SetupStage ProcessStandardRequest SET_ADDRESS: 12 ProcessControlTransfer USTAT =0x04 UADDR = 0x12 ProcessControlTransfer USTAT =0 SetupStage ProcessStandardRequest GetDescriptor DEVICE_DESCRIPTOR InDataStage bufferSize=8 ProcessControlTransfer USTAT =0x04 InDataStage bufferSize=0 ProcessControlTransfer USTAT =0 ProcessControlTransfer USTAT =0 SetupStage ProcessStandardRequest GetDescriptor DEVICE_DESCRIPTOR InDataStage bufferSize=8 ProcessControlTransfer USTAT =0x04 InDataStage bufferSize=0 ProcessControlTransfer USTAT =0 BusReset ProcessControlTransfer USTAT =0 SetupStage ProcessStandardRequest SET_ADDRESS: 13 ProcessControlTransfer USTAT =0x04 UADDR = 0x13 ProcessControlTransfer USTAT =0 SetupStage ProcessStandardRequest GetDescriptor DEVICE_DESCRIPTOR InDataStage bufferSize=8 ProcessControlTransfer USTAT =0x04 InDataStage bufferSize=0 ProcessControlTransfer USTAT =0 ProcessControlTransfer USTAT =0 SetupStage ProcessStandardRequest GetDescriptor DEVICE_DESCRIPTOR InDataStage bufferSize=8 ProcessControlTransfer USTAT =0x04 InDataStage bufferSize=0 ProcessControlTransfer USTAT =0 It looks like pic try to send (many times) dev descriptor w/o success. Maybe someone has any hints why it won't works... or maybe exist somewhere and usable (with sdcc) usb stack for pic18f? I tried other usb libs puf, eva but both are based on the same stack form nutsvols... regards, marico ------------------------------------------------------------------------------ RSA(R) Conference 2012 Save $700 by Nov 18 Register now http://p.sf.net/sfu/rsa-sfdev2dev1 _______________________________________________ Sdcc-user mailing list Sdcc-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/sdcc-user
