diff options
Diffstat (limited to 'src/tablet.c')
| -rw-r--r-- | src/tablet.c | 121 |
1 files changed, 121 insertions, 0 deletions
diff --git a/src/tablet.c b/src/tablet.c new file mode 100644 index 0000000..87d2f2a --- /dev/null +++ b/src/tablet.c @@ -0,0 +1,121 @@ +#include "project.h" + +static const uint8_t tablet_report_descriptor[] = { + 0x05, 0x01, // USAGE_PAGE (Generic Desktop) + 0x09, 0x02, // USAGE (Mouse) + 0xa1, 0x01, // COLLECTION (Application) + 0x09, 0x01, // USAGE (Pointer) + 0xa1, 0x00, // COLLECTION (Physical) + 0x05, 0x01, // USAGE_PAGE (Generic Desktop) + 0x09, 0x30, // USAGE (X) + 0x09, 0x31, // USAGE (Y) + 0x15, 0x00, // LOGICAL_MINIMUM (0) + 0x26, 0xff, 0x7f, // LOGICAL_MAXIMUM (32767) + 0x75, 0x10, // REPORT_SIZE (16) + 0x95, 0x02, // REPORT_COUNT (2) + 0x81, 0x02, // INPUT (Data,Var,Abs) + 0x05, 0x01, // USAGE_PAGE (Generic Desktop) + 0x09, 0x38, // USAGE (Wheel) + 0x15, 0x81, // LOGICAL_MINIMUM (-127) + 0x25, 0x7f, // LOGICAL_MAXIMUM (127) + 0x75, 0x08, // REPORT_SIZE (8) + 0x95, 0x01, // REPORT_COUNT (1) + 0x81, 0x06, // INPUT (Data,Var,Rel) + 0x05, 0x09, // USAGE_PAGE (Button) + 0x19, 0x01, // USAGE_MINIMUM (Button 1) + 0x29, 0x03, // USAGE_MAXIMUM (Button 3) + 0x15, 0x00, // LOGICAL_MINIMUM (0) + 0x25, 0x01, // LOGICAL_MAXIMUM (1) + 0x95, 0x03, // REPORT_COUNT (3) + 0x75, 0x01, // REPORT_SIZE (1) + 0x81, 0x02, // INPUT (Data,Var,Abs) + 0x95, 0x01, // REPORT_COUNT (1) + 0x75, 0x05, // REPORT_SIZE (5) + 0x81, 0x01, // INPUT (Cnst,Ary,Abs) + 0xc0, // END_COLLECTION + 0x09, 0x3c, // USAGE (Button 60) + 0x06, 0x00, 0xff, // USAGE_PAGE (Vendor Defined Page 1) + 0x09, 0x01, // USAGE (Vendor Usage 1) + 0x15, 0x00, // LOGICAL_MINIMUM (0) + 0x25, 0x01, // LOGICAL_MAXIMUM (1) + 0x75, 0x01, // REPORT_SIZE (1) + 0x95, 0x02, // REPORT_COUNT (2) + 0xb1, 0x22, // FEATURE (Data,Var,Abs,NPrf) + 0x75, 0x06, // REPORT_SIZE (6) + 0x95, 0x01, // REPORT_COUNT (1) + 0xb1, 0x01, // FEATURE (Cnst,Ary,Abs) + 0xc0 // END_COLLECTION +}; + +static const struct +{ + struct usb_hid_descriptor hid_descriptor; + struct + { + uint8_t bReportDescriptorType; + uint16_t wDescriptorLength; + } __attribute__ ((packed)) hid_report; +} __attribute__ ((packed)) tablet_function = +{ + .hid_descriptor = + { + .bLength = sizeof (tablet_function),.bDescriptorType = USB_DT_HID,.bcdHID = + 0x0100,.bCountryCode = 0,.bNumDescriptors = 1,} + ,.hid_report = + { + .bReportDescriptorType = USB_DT_REPORT,.wDescriptorLength = + sizeof (tablet_report_descriptor),} +,}; + +const struct usb_endpoint_descriptor tablet_endpoint = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + .bEndpointAddress = 0x83, + .bmAttributes = USB_ENDPOINT_ATTR_INTERRUPT, + .wMaxPacketSize = 6, + .bInterval = 0x20, +}; + +const struct usb_interface_descriptor tablet_iface = { + .bLength = USB_DT_INTERFACE_SIZE, + .bDescriptorType = USB_DT_INTERFACE, + .bInterfaceNumber = 2, + .bAlternateSetting = 0, + .bNumEndpoints = 1, + .bInterfaceClass = USB_CLASS_HID, + .bInterfaceSubClass = 1, /* boot */ + .bInterfaceProtocol = 2, /* tablet */ + .iInterface = 0, + + .endpoint = &tablet_endpoint, + + .extra = &tablet_function, + .extralen = sizeof (tablet_function), +}; + + +void tablet_get_descriptor(uint8_t **buf,uint16_t *len) +{ + + /* Handle the HID report descriptor. */ + *buf = (uint8_t *) tablet_report_descriptor; + *len = sizeof (tablet_report_descriptor); +} + +void +tablet_test (void) +{ + static int c = 0; + uint8_t buf[6] = { 0, 0, 0, 0,0 }; + + buf[0]=c & 0xff; + buf[1]=(c &0x7fff) >> 8; + buf[2]=(32767 -(c &0x7fff)) & 0xff; + buf[3]=(32767 -(c & 0x7fff)) >> 8; + buf[4]=(c&8 ) ? -1:1; + buf[5]=c; + + c++; + + usbd_ep_write_packet (usbd_dev, 0x83, buf, 6); +} |