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Loopback FTDI implementation on the FX2 using USB descriptors from the linux-descriptors branch #21
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| #!/bin/bash -e | ||
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| DEVS=$(lsusb|grep -E '(2a19|16c0|04b4|1d50|fb9a|1443)' |sed 's/:.*//;s/Bus //;s/Device //;s/ /\//') | ||
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| if [ -z "$1" ]; then | ||
| echo "$0: usage: $0 <file>" | ||
| exit 1; | ||
| fi | ||
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| for dev in $DEVS;do | ||
| echo "Downloading $1 to $dev" | ||
| /sbin/fxload -D /dev/bus/usb/$dev -t fx2lp -I $1 | ||
| done | ||
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| exit 0 |
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| FX2LIBDIR=../../ | ||
| BASENAME = ftdi_main | ||
| SOURCES=ftdi_main.c ftdi_conf.c | ||
| PID=0x1004 | ||
| CODE_SIZE = --code-size 0x3000 | ||
| XRAM_LOC = --xram-loc 0x3200 | ||
| XRAM_SIZE = --xram-size 0x700 | ||
| INT2JT =-Wl"-b INT2JT=0x3100" | ||
| include $(FX2LIBDIR)lib/fx2.mk | ||
| include $(FX2LIBDIR)lib/fx2-cdesc.mk | ||
| fx2_download: | ||
| ../download.sh build/$(BASENAME).ihx |
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| /* | ||
| * The descriptors below setup an FTDI device with a VID | ||
| * of 0x0403, and PID of 0x6010.In this particular case | ||
| * endpoint 1 is used to transfer data in and out of the device | ||
| * since it can be easily accessed by the CPU and is not used | ||
| * for other purposes(Typically used for transferring small amounts | ||
| * of data which is what we need) | ||
| * lsusb -v will show: | ||
| * For an explanation of fields look at | ||
| * http://www.keil.com/pack/doc/mw/USB/html/_u_s_b__endpoint__descriptor.html | ||
| * vbDevice Descriptor: | ||
| * bLength 18 | ||
| * bDescriptorType 1 | ||
| * bcdUSB 2.00 | ||
| * bDeviceClass 255 Vendor Specific Class | ||
| * bDeviceSubClass 255 Vendor Specific Subclass | ||
| * bDeviceProtocol 255 Vendor Specific Protocol | ||
| * bMaxPacketSize0 64 | ||
| * idVendor 0x0403 Future Technology Devices International, Ltd | ||
| * idProduct 0x6010 FT2232C Dual USB-UART/FIFO IC | ||
| * bcdDevice 0.01 | ||
| * iManufacturer 1 | ||
| * iProduct 2 | ||
| * iSerial 0 | ||
| * bNumConfigurations 1 | ||
| * Configuration Descriptor: | ||
| * bLength 9 | ||
| * bDescriptorType 2 | ||
| * wTotalLength 32 | ||
| * bNumInterfaces 1 | ||
| * bConfigurationValue 1 | ||
| * iConfiguration 0 | ||
| * bmAttributes 0x80 | ||
| * (Bus Powered) | ||
| * MaxPower 100mA | ||
| * Interface Descriptor: | ||
| * bLength 9 | ||
| * bDescriptorType 4 | ||
| * bInterfaceNumber 0 | ||
| * bAlternateSetting 0 | ||
| * bNumEndpoints 2 | ||
| * bInterfaceClass 255 Vendor Specific Class | ||
| * bInterfaceSubClass 255 Vendor Specific Subclass | ||
| * bInterfaceProtocol 255 Vendor Specific Protocol | ||
| * iInterface 3 | ||
| * Endpoint Descriptor: | ||
| * bLength 7 | ||
| * bDescriptorType 5 | ||
| * bEndpointAddress 0x01 EP 1 OUT | ||
| * bmAttributes 2 | ||
| * Transfer Type Bulk | ||
| * Synch Type None | ||
| * Usage Type Data | ||
| * wMaxPacketSize 0x0200 1x 512 bytes | ||
| * bInterval 0 | ||
| * Endpoint Descriptor: | ||
| * bLength 7 | ||
| * bDescriptorType 5 | ||
| * bEndpointAddress 0x81 EP 1 IN | ||
| * bmAttributes 2 | ||
| * Transfer Type Bulk | ||
| * Synch Type None | ||
| * Usage Type Data | ||
| * wMaxPacketSize 0x0200 1x 512 bytes | ||
| * bInterval 0 | ||
| */ | ||
| #include "descriptors.h" | ||
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| __code __at(0x3e00) struct usb_descriptors code_descriptors = | ||
| { | ||
| .device = | ||
| { | ||
| /*Size of Descriptor in Bytes*/ | ||
| .bLength = USB_DT_DEVICE_SIZE, | ||
| /*Constant Device Descriptor (0x01)*/ | ||
| .bDescriptorType = USB_DT_DEVICE, | ||
| /*USB Specification Number which device complies too.*/ | ||
| .bcdUSB = USB_BCD_V20, | ||
| /*Class Code (Assigned by USB Org) | ||
| * If equal to Zero, each interface specifies it’s own class code | ||
| * If equal to 0xFF, the class code is vendor specified.*/ | ||
| .bDeviceClass = USB_CLASS_VENDOR_SPEC, | ||
| /*Subclass Code (Assigned by USB Org)*/ | ||
| .bDeviceSubClass = USB_SUBCLASS_VENDOR_SPEC, | ||
| /*Protocol Code (Assigned by USB Org)*/ | ||
| .bDeviceProtocol = 0xff, | ||
| /*Maximum Packet Size for Zero Endpoint. Valid Sizes are 8, 16, 32, 64*/ | ||
| .bMaxPacketSize0 = 64, | ||
| /*Vendor ID*/ | ||
| .idVendor = 0x0403, | ||
| /*Product ID*/ | ||
| .idProduct = 0x6010, | ||
| /*Device Release Number*/ | ||
| .bcdDevice = 0x0001, | ||
| /*Index of Manufacturer String Descriptor*/ | ||
| .iManufacturer = USB_STRING_INDEX(0), | ||
| /*Index of Product String Descriptor*/ | ||
| .iProduct = USB_STRING_INDEX(1), | ||
| /*Index of Serial Number String Descriptor*/ | ||
| .iSerialNumber = USB_STRING_INDEX_NONE, | ||
| /*Number of Possible Configurations*/ | ||
| .bNumConfigurations = 1, | ||
| }, | ||
| .qualifier = | ||
| { | ||
| /*Size of this descriptor in bytes. */ | ||
| .bLength = USB_DT_DEVICE_QUALIFIER_SIZE, | ||
| /*Device Qualifier Descriptor Type = 6. */ | ||
| .bDescriptorType = USB_DT_DEVICE_QUALIFIER, | ||
| /*USB Specification Release Number in Binary-Coded Decimal (i.e., 2.10 is 210h). | ||
| * This field identifies the release of the USB Specification with which the device | ||
| * and its descriptors are compliant. | ||
| * At least V2.00 is required to use this descriptor.*/ | ||
| .bcdUSB = USB_BCD_V20, | ||
| /*Class code (assigned by the USB-IF). | ||
| * If this field is set to FFh, the device class is vendor specific.*/ | ||
| .bDeviceClass = USB_CLASS_VENDOR_SPEC, | ||
| /*Subclass code (assigned by the USB-IF).*/ | ||
| .bDeviceSubClass = USB_SUBCLASS_VENDOR_SPEC, | ||
| /*Protocol code (assigned by the USB-IF).Set to FFh, | ||
| * the device uses a vendor specific protocol on a device basis.*/ | ||
| .bDeviceProtocol = 0xff, | ||
| /*Maximum packet size for other speed.*/ | ||
| .bMaxPacketSize0 = 64, | ||
| /*Number of other-speed configurations.*/ | ||
| .bNumConfigurations = 1, | ||
| /*Reserved for future use, must be zero.*/ | ||
| .bRESERVED = 0, | ||
| }, | ||
| .highspeed = | ||
| { | ||
| .config = | ||
| { | ||
| /*Size of this descriptor in bytes.*/ | ||
| .bLength = USB_DT_CONFIG_SIZE, | ||
| /*Configuration Descriptor Type = 2.*/ | ||
| .bDescriptorType = USB_DT_CONFIG, | ||
| /*Total length of data returned for this configuration. | ||
| * Includes the combined length of all descriptors | ||
| *(configuration, interface, endpoint, and class or vendor specific) | ||
| * returned for this configuration.*/ | ||
| .wTotalLength = sizeof(descriptors.highspeed), | ||
| /*Number of interfaces supported by this configuration.*/ | ||
| .bNumInterfaces = 1, | ||
| /*Value to select this configuration with SetConfiguration().*/ | ||
| .bConfigurationValue = 1, | ||
| /*Index of string descriptor describing this configuration.*/ | ||
| .iConfiguration = 0, | ||
| /*Configuration characteristics | ||
| * D7: Reserved (must be set to one for historical reasons) | ||
| * D6: Self-powered | ||
| * D5: Remote Wakeup | ||
| * D4...0: Reserved (reset to zero)*/ | ||
| .bmAttributes = USB_CONFIG_ATT_ONE, | ||
| /*Maximum power consumption of the USB device from the | ||
| * bus in this specific configuration when the device is | ||
| * fully operational. Expressed in 2mA units (i.e., 50 = 100mA).*/ | ||
| .bMaxPower = 0x32, // FIXME: ??? | ||
| }, | ||
| .interface = | ||
| { | ||
| /*Size of this descriptor in bytes.*/ | ||
| .bLength = USB_DT_INTERFACE_SIZE, | ||
| /*Interface Descriptor Type = 4.*/ | ||
| .bDescriptorType = USB_DT_INTERFACE, | ||
| /*The number of this interface.*/ | ||
| .bInterfaceNumber = 0, | ||
| /*Value used to select an alternate setting for the | ||
| * interface identified in the prior field. | ||
| * Allows an interface to change the settings on the fly.*/ | ||
| .bAlternateSetting = 0, | ||
| /*Number of endpoints used by this interface (excluding endpoint zero).*/ | ||
| .bNumEndpoints = 2, | ||
| /*Class code (assigned by the USB-IF).*/ | ||
| .bInterfaceClass = USB_CLASS_VENDOR_SPEC, | ||
| /*Subclass code (assigned by the USB-IF).*/ | ||
| .bInterfaceSubClass = USB_SUBCLASS_VENDOR_SPEC, | ||
| /*Protocol code (assigned by the USB).*/ | ||
| .bInterfaceProtocol = USB_PROTOCOL_VENDOR_SPEC, | ||
| /*Index of string descriptor describing this interface.*/ | ||
| .iInterface = USB_STRING_INDEX(2), | ||
| }, | ||
| .endpoints = | ||
| { | ||
| { | ||
| /*Size of this descriptor in bytes.*/ | ||
| .bLength = USB_DT_ENDPOINT_SIZE, | ||
| /*Endpoint Descriptor Type = 5.*/ | ||
| .bDescriptorType = USB_DT_ENDPOINT, | ||
| /*The address of the endpoint on the USB device described by this descriptor. The address is encoded as follows: | ||
| * Bit 3...0: The endpoint number | ||
| * Bit 6...4: Reserved, reset to zero | ||
| * Bit 7: Direction, ignored for control endpoints. | ||
| * 0 = OUT endpoint | ||
| * 1 = IN endpoint*/ | ||
| .bEndpointAddress = USB_ENDPOINT_NUMBER(0x1) | USB_DIR_OUT, | ||
| /*The endpoint attribute when configured through bConfigurationValue.*/ | ||
| .bmAttributes = USB_ENDPOINT_XFER_BULK, | ||
| /*Is the maximum packet size of this endpoint.*/ | ||
| .wMaxPacketSize = 512, | ||
| /*Interval for polling endpoint for data transfers*/ | ||
| .bInterval = 0, | ||
| }, | ||
| { | ||
| /*Size of this descriptor in bytes.*/ | ||
| .bLength = USB_DT_ENDPOINT_SIZE, | ||
| /*Endpoint Descriptor Type = 5.*/ | ||
| .bDescriptorType = USB_DT_ENDPOINT, | ||
| /*The address of the endpoint on the USB device described by this descriptor. The address is encoded as follows: | ||
| * Bit 3...0: The endpoint number | ||
| * Bit 6...4: Reserved, reset to zero | ||
| * Bit 7: Direction, ignored for control endpoints. | ||
| * 0 = OUT endpoint | ||
| * 1 = IN endpoint*/ | ||
| .bEndpointAddress = USB_ENDPOINT_NUMBER(0x1) | USB_DIR_IN, | ||
| /*The endpoint attribute when configured through bConfigurationValue.*/ | ||
| .bmAttributes = USB_ENDPOINT_XFER_BULK, | ||
| /*Is the maximum packet size of this endpoint.*/ | ||
| .wMaxPacketSize = 512, | ||
| /*Interval for polling endpoint for data transfers*/ | ||
| .bInterval = 0, | ||
| }, | ||
| }, | ||
| }, | ||
| .fullspeed = | ||
| { | ||
| /*Refer above comments for descriptor explanations.*/ | ||
| .config = | ||
| { | ||
| .bLength = USB_DT_CONFIG_SIZE, | ||
| .bDescriptorType = USB_DT_CONFIG, | ||
| .wTotalLength = sizeof(descriptors.fullspeed), | ||
| .bNumInterfaces = 1, | ||
| .bConfigurationValue = 1, | ||
| .iConfiguration = 0, | ||
| .bmAttributes = USB_CONFIG_ATT_ONE, | ||
| .bMaxPower = 0x32,// FIXME: ??? | ||
| }, | ||
| .interface = | ||
| { | ||
| .bLength = USB_DT_INTERFACE_SIZE, | ||
| .bDescriptorType = USB_DT_INTERFACE, | ||
| .bInterfaceNumber = 0, | ||
| .bAlternateSetting = 0, | ||
| .bNumEndpoints = 2, | ||
| .bInterfaceClass = USB_CLASS_VENDOR_SPEC, | ||
| .bInterfaceSubClass = USB_SUBCLASS_VENDOR_SPEC, | ||
| .bInterfaceProtocol = 0xff, | ||
| .iInterface = 3, | ||
| }, | ||
| .endpoints = | ||
| { | ||
| { | ||
| .bLength = USB_DT_ENDPOINT_SIZE, | ||
| .bDescriptorType = USB_DT_ENDPOINT, | ||
| .bEndpointAddress = USB_ENDPOINT_NUMBER(0x2) | USB_DIR_OUT, | ||
| .bmAttributes = USB_ENDPOINT_XFER_BULK, | ||
| .wMaxPacketSize = 64, | ||
| .bInterval = 0, | ||
| }, | ||
| { | ||
| .bLength = USB_DT_ENDPOINT_SIZE, | ||
| .bDescriptorType = USB_DT_ENDPOINT, | ||
| .bEndpointAddress = USB_ENDPOINT_NUMBER(0x6) | USB_DIR_IN, | ||
| .bmAttributes = USB_ENDPOINT_XFER_BULK, | ||
| .wMaxPacketSize = 64, | ||
| .bInterval = 0, | ||
| }, | ||
| }, | ||
| }, | ||
| #include "build/descriptors_stringtable.inc" | ||
| }; |
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| #include <stddef.h> | ||
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| #include "build/descriptors_stringtable.h" | ||
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| #include <linux/ch9.h> | ||
| #include <linux/ch9-extra.h> | ||
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| #ifndef DESCRIPTORS_H_ | ||
| #define DESCRIPTORS_H_ | ||
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| struct usb_section { | ||
| struct usb_config_descriptor config; | ||
| struct usb_interface_descriptor interface; | ||
| struct usb_endpoint_descriptor endpoints[2]; | ||
| }; | ||
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| struct usb_descriptors { | ||
| struct usb_device_descriptor device; | ||
| struct usb_qualifier_descriptor qualifier; | ||
| struct usb_section highspeed; | ||
| struct usb_section fullspeed; | ||
| struct usb_descriptors_stringtable stringtable; | ||
| }; | ||
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| __xdata __at(DSCR_AREA) struct usb_descriptors descriptors; | ||
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| __code __at(DSCR_AREA+offsetof(struct usb_descriptors, device)) WORD dev_dscr; | ||
| __code __at(DSCR_AREA+offsetof(struct usb_descriptors, qualifier)) WORD dev_qual_dscr; | ||
| __code __at(DSCR_AREA+offsetof(struct usb_descriptors, highspeed)) WORD highspd_dscr; | ||
| __code __at(DSCR_AREA+offsetof(struct usb_descriptors, fullspeed)) WORD fullspd_dscr; | ||
| __code __at(DSCR_AREA+offsetof(struct usb_descriptors, stringtable)) WORD dev_strings; | ||
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| #endif // DESCRIPTORS_H_ |
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,3 @@ | ||
| Hi | ||
| There | ||
| iFrame | ||
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Fill these with real appropriate values