fish

14 files changed, 0 insertions, 1043 deletions

diff --git a/src/Makefile b/src/Makefile
deleted file mode 100644
index f7f445a..0000000
--- a/src/Makefile
+++ /dev/null
@@ -1,43 +0,0 @@
-##
-## This file is part of the libopencm3 project.
-##
-## Copyright (C) 2009 Uwe Hermann <uwe@hermann-uwe.de>
-##
-## This library is free software: you can redistribute it and/or modify
-## it under the terms of the GNU Lesser General Public License as published by
-## the Free Software Foundation, either version 3 of the License, or
-## (at your option) any later version.
-##
-## This library is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU Lesser General Public License for more details.
-##
-## You should have received a copy of the GNU Lesser General Public License
-## along with this library.  If not, see <http://www.gnu.org/licenses/>.
-##
-
-CPROTO=cproto
-PROG=kvm
-
-V=1
-default: ${PROG}.elf
-
-CSRCS=dfu.c mouse.c keyboard.c main.c usb.c  tablet.c usart.c kvm.c ring.c
-
-
-BINARY = ${PROG}
-OBJS = ${CSRCS:%.c=%.o}
-
-
-program: ${PROG}.elf
-	echo halt | nc -t localhost 4444
-	echo flash write_image erase ${PWD}/$< | nc -t localhost 4444
-	echo reset run | nc -t localhost 4444
-
-protos:
-	echo -n > prototypes.h
-	${CPROTO} $(INCLUDES) $(DEFINES) -e -v ${CSRCS} > prototypes.h.tmp
-	mv -f prototypes.h.tmp prototypes.h
-
-include ../Makefile.include
diff --git a/src/dfu.c b/src/dfu.c
deleted file mode 100644
index e9de46f..0000000
--- a/src/dfu.c
+++ /dev/null
@@ -1,60 +0,0 @@
-#include "project.h"
-
-#ifdef INCLUDE_DFU_INTERFACE
-
-const struct usb_dfu_descriptor dfu_function = {
-  .bLength = sizeof (struct usb_dfu_descriptor),
-  .bDescriptorType = DFU_FUNCTIONAL,
-  .bmAttributes = USB_DFU_CAN_DOWNLOAD | USB_DFU_WILL_DETACH,
-  .wDetachTimeout = 255,
-  .wTransferSize = 1024,
-  .bcdDFUVersion = 0x011A,
-};
-
-const struct usb_interface_descriptor dfu_iface = {
-  .bLength = USB_DT_INTERFACE_SIZE,
-  .bDescriptorType = USB_DT_INTERFACE,
-  .bInterfaceNumber = 3,
-  .bAlternateSetting = 0,
-  .bNumEndpoints = 0,
-  .bInterfaceClass = 0xFE,
-  .bInterfaceSubClass = 1,
-  .bInterfaceProtocol = 1,
-  .iInterface = 0,
-
-  .extra = &dfu_function,
-  .extralen = sizeof (dfu_function),
-};
-
-
-static void
-dfu_detach_complete (usbd_device * usbd_dev, struct usb_setup_data *req)
-{
-  (void) req;
-  (void) usbd_dev;
-
-  gpio_set_mode (GPIOA, GPIO_MODE_INPUT, 0, GPIO15);
-  gpio_set_mode (GPIOA, GPIO_MODE_OUTPUT_2_MHZ,
-                 GPIO_CNF_OUTPUT_PUSHPULL, GPIO10);
-  gpio_set (GPIOA, GPIO10);
-  scb_reset_core ();
-}
-
-int
-dfu_control_request (usbd_device * usbd_dev, struct usb_setup_data *req,
-                     uint8_t ** buf, uint16_t * len,
-                     void (**complete) (usbd_device * usbd_dev,
-                                        struct usb_setup_data * req))
-{
-  (void) buf;
-  (void) len;
-  (void) usbd_dev;
-
-  if ((req->bmRequestType != 0x21) || (req->bRequest != DFU_DETACH))
-    return 0;                   /* Only accept class request. */
-
-  *complete = dfu_detach_complete;
-
-  return 1;
-}
-#endif
diff --git a/src/keyboard.c b/src/keyboard.c
deleted file mode 100644
index e9046a3..0000000
--- a/src/keyboard.c
+++ /dev/null
@@ -1,140 +0,0 @@
-#include "project.h"
-
-#if 0
-static const uint8_t keyboard_report_descriptor[] = {
-  0x05, 0x01,                   /* USAGE_PAGE (Generic Desktop)         */
-  0x09, 0x01,                   /* USAGE (Keyboard                      */
-  0xa1, 0x01,                   /* COLLECTION (Application)             */
-  0x05, 0x07,                   /*   USAGE_PAGE (Key Codes)             */
-  0x19, 0xe0,                   /*     USAGE_MINIMUM (Control Left)     */
-  0x29, 0xe7,                   /*     USAGE_MAXIMUM (GUI Right)        */
-  0x15, 0x00,                   /*     LOGICAL_MINIMUM (0)              */
-  0x25, 0x01,                   /*     LOGICAL_MAXIMUM (1)              */
-  0x75, 0x01,                   /*     REPORT_SIZE (1)                  */
-  0x95, 0x08,                   /*     REPORT_COUNT (8)                 */
-  0x81, 0x02,                   /*     INPUT (Data,Var,Abs)             */
-  0x95, 0x01,                   /*     REPORT_COUNT (1)                 */
-  0x75, 0x08,                   /*     REPORT_SIZE (8)                  */
-  0x81, 0x01,                   /*     INPUT (Cnst,Ary,Abs)             */
-  0x95, 0x05,                   /*     REPORT_COUNT (5)                 */
-  0x75, 0x01,                   /*     REPORT_SIZE (1)                  */
-#if 0
-  0x05, 0x08,                   /*   USAGE_PAGE (LEDs)                  */
-  0x19, 0x01,                   /*     USAGE_MINIMUM (NumLock)          */
-  0x29, 0x05,                   /*     USAGE_MAXIMUM (Kana)             */
-  0x ? ?, 0x02,                 /*     OUTPUT (Data,Var,Abs)            */
-  0x95, 0x01,                   /*     REPORT_COUNT (1)                 */
-  0x75, 0x03,                   /*     REPORT_SIZE (3)                  */
-  0x ? ?, 0x01,                 /*     OUTPUT (Cnst,Ary,Abs)             */
-  0x95, 0x06,                   /*     REPORT_COUNT (6)                 */
-  0x75, 0x03,                   /*     REPORT_SIZE (8)                  */
-  0x15, 0x00,                   /*     LOGICAL_MINIMUM (0)              */
-  0x25, 0xff, 0x00,             /*LOGICAL_MAXIMUM (255)           */
-#endif
-  0x05, 0x07,                   /*   USAGE_PAGE (Key Codes)             */
-  0x19, 0x00,                   /*     USAGE_MINIMUM (?)                */
-  0x29, 0x98,                   /*     USAGE_MAXIMUM (LANG 9)           */
-  0xc0                          /* END_COLLECTION                       */
-};
-#endif
-
-static const uint8_t keyboard_report_descriptor[] = {
-  0x05, 0x01,                   /* Usage Page (Generic Desktop) */
-  0x09, 0x06,                   /* Usage (Keyboard) */
-  0xA1, 0x01,                   /* Collection (Application) */
-  0x05, 0x07,                   /*   Usage page (Key Codes) */
-  0x19, 0xE0,                   /*     Usage minimum (224) */
-  0x29, 0xE7,                   /*     Usage maximum (231) */
-  0x15, 0x00,                   /*     Logical minimum (0) */
-  0x25, 0x01,                   /*     Logical maximum (1) */
-  0x75, 0x01,                   /*     Report size (1) */
-  0x95, 0x08,                   /*     Report count (8) */
-  0x81, 0x02,                   /*     Input (data, variable, absolute) */
-  0x95, 0x01,                   /*     Report count (1) */
-  0x75, 0x08,                   /*     Report size (8) */
-  0x81, 0x01,                   /*     Input (constant) */
-  0x95, 0x06,                   /*     Report count (6) */
-  0x75, 0x08,                   /*     Report size (8) */
-  0x15, 0x00,                   /*     Logical minimum (0) */
-  0x25, 0x65,                   /*     Logical maximum (101) */
-  0x05, 0x07,                   /*   Usage page (key codes) */
-  0x19, 0x00,                   /*     Usage minimum (0) */
-  0x2A, 0xff, 0x00,             /*     Usage maximum (255) */
-//  0x29, 0x65,                   /*     Usage maximum (101) */
-//  0x2A, 0xff, 0x03,             /*     Usage maximum (1023) */
-  0x81, 0x00,                   /*   Input (data, array) */
-  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)) keyboard_function =
-{
-  .hid_descriptor =
-  {
-  .bLength = sizeof (keyboard_function),.bDescriptorType =
-      USB_DT_HID,.bcdHID = 0x0100,.bCountryCode = 0,.bNumDescriptors = 1,}
-  ,.hid_report =
-  {
-  .bReportDescriptorType = USB_DT_REPORT,.wDescriptorLength =
-      sizeof (keyboard_report_descriptor),}
-,};
-
-const struct usb_endpoint_descriptor keyboard_endpoint = {
-  .bLength = USB_DT_ENDPOINT_SIZE,
-  .bDescriptorType = USB_DT_ENDPOINT,
-  .bEndpointAddress = 0x81,
-  .bmAttributes = USB_ENDPOINT_ATTR_INTERRUPT,
-  .wMaxPacketSize = 8,
-  .bInterval = 0x20,
-};
-
-const struct usb_interface_descriptor keyboard_iface = {
-  .bLength = USB_DT_INTERFACE_SIZE,
-  .bDescriptorType = USB_DT_INTERFACE,
-  .bInterfaceNumber = 0,
-  .bAlternateSetting = 0,
-  .bNumEndpoints = 1,
-  .bInterfaceClass = USB_CLASS_HID,
-  .bInterfaceSubClass = 1,      /* boot */
-  .bInterfaceProtocol = 1,      /* keyboard */
-  .iInterface = 0,
-
-  .endpoint = &keyboard_endpoint,
-
-  .extra = &keyboard_function,
-  .extralen = sizeof (keyboard_function),
-};
-
-
-void
-keyboard_get_descriptor (uint8_t ** buf, uint16_t * len)
-{
-
-  /* Handle the HID report descriptor. */
-  *buf = (uint8_t *) keyboard_report_descriptor;
-  *len = sizeof (keyboard_report_descriptor);
-}
-
-void
-keyboard_test (void)
-{
-  static int c = 0;
-  uint8_t buf[8] = { 0, 0, 0, 0, 0, 0, 0, 0 };
-
-
-  buf[0] = (c >> 1) & 7;
-
-  buf[2] = (c & 1) ? 12 : 0;
-
-  c++;
-
-  usbd_ep_write_packet (usbd_dev, 0x81, buf, 8);
-}
diff --git a/src/kvm.c b/src/kvm.c
deleted file mode 100644
index f5e65c8..0000000
--- a/src/kvm.c
+++ /dev/null
@@ -1,91 +0,0 @@
-#include "project.h"
-
-
-static enum
-{
-  STATE_SYNC = 0,
-  STATE_ADDR = 1,
-  STATE_ENDPOINT = 2,
-  STATE_LEN = 3,
-  STATE_DATA = 4,
-} state = STATE_SYNC;
-
-
-static uint8_t buf[16];
-static int addr;
-static int endpoint;
-static unsigned int len;
-static unsigned int ptr;
-
-void
-kvm_dispatch (void)
-{
-#if 0
-          printf
-            ("Addr %d, Write to ep %x, %d bytes %02x %02x %02x %02x ...\r\n",
-             addr, endpoint, len, buf[0], buf[1], buf[2], buf[3]);
-#endif
-
- if(len)
-  usbd_ep_write_packet (usbd_dev, endpoint, buf, len);
-}
-
-void
-kvm_recv (uint8_t d)
-{
-//  printf ("S%d V0x%02x\r\n", state, d);
-
-  if (state == STATE_ADDR)
-    {
-      addr = d;
-      usart_queue (d - 1);
-      state = STATE_ENDPOINT;
-      return;
-    }
-  else
-    {
-      usart_queue (d);
-    }
-
-
-  switch (state)
-    {
-    case STATE_SYNC:
-      if (d != 0x5a)
-          break;
-      state = STATE_ADDR;
-      break;
-    case STATE_ENDPOINT:
-      endpoint = d;
-      if ((endpoint < 0x81) || (endpoint > 0x83))
-        {
-          state = STATE_SYNC;
-        }
-      else
-        {
-          state = STATE_LEN;
-        }
-      break;
-    case STATE_LEN:
-      len = d;
-      ptr = 0;
-      if (len > sizeof (buf))
-        {
-          state = STATE_SYNC;
-        }
-      else
-        {
-          state = STATE_DATA;
-        }
-      break;
-    case STATE_DATA:
-      buf[ptr++] = d;
-      if (ptr >= len)
-        {
-          if (!addr)
-            kvm_dispatch ();
-          state = STATE_SYNC;
-        }
-      break;
-    }
-}
diff --git a/src/kvm.ld b/src/kvm.ld
deleted file mode 100644
index e15beca..0000000
--- a/src/kvm.ld
+++ /dev/null
@@ -1,31 +0,0 @@
-/*
- * This file is part of the libopencm3 project.
- *
- * Copyright (C) 2009 Uwe Hermann <uwe@hermann-uwe.de>
- *
- * This library is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Lesser General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public License
- * along with this library.  If not, see <http://www.gnu.org/licenses/>.
- */
-
-/* Linker script for Olimex STM32-H103 (STM32F103RBT6, 128K flash, 20K RAM). */
-
-/* Define memory regions. */
-MEMORY
-{
-	rom (rx) : ORIGIN = 0x08000000, LENGTH = 128K
-	ram (rwx) : ORIGIN = 0x20000000, LENGTH = 20K
-}
-
-/* Include the common ld script. */
-INCLUDE libopencm3_stm32f1.ld
-
diff --git a/src/main.c b/src/main.c
deleted file mode 100644
index 3058108..0000000
--- a/src/main.c
+++ /dev/null
@@ -1,55 +0,0 @@
-#include "project.h"
-
-void
-sys_tick_handler (void)
-{
-#if 0
-  printf ("fish\r\n");
-  keyboard_test ();
-  mouse_test ();
-  tablet_test ();
-#endif
-}
-
-int
-main (void)
-{
-  int i;
-
-
-  rcc_clock_setup_in_hsi_out_48mhz ();
-  rcc_periph_clock_enable (RCC_GPIOC);
-  rcc_periph_clock_enable (RCC_GPIOA);
-  rcc_periph_clock_enable (RCC_AFIO);
-  rcc_periph_clock_enable (RCC_USART1);
-
-
-  usart_init ();
-
-  usb_init ();
-
-  systick_set_clocksource (STK_CSR_CLKSOURCE_AHB_DIV8);
-  /* 48MHz / 8 = > 6Mhz */
-  systick_set_reload (3000000);
-  /* 6MHz / 3000000 => 2Hz */
-
-  systick_interrupt_enable ();
-  systick_counter_enable ();
-
-  gpio_set (GPIOC, GPIO11);
-  gpio_set_mode (GPIOC, GPIO_MODE_OUTPUT_2_MHZ,
-                 GPIO_CNF_OUTPUT_PUSHPULL, GPIO11);
-
-
-
-  for (i = 0; i < 0x80000; i++)
-    __asm__ ("nop");
-
-  gpio_clear (GPIOC, GPIO11);
-
-  printf ("Hello world\r\n");
-
-  usb_run ();
-
-  return 0;
-}
diff --git a/src/mouse.c b/src/mouse.c
deleted file mode 100644
index 6e0a207..0000000
--- a/src/mouse.c
+++ /dev/null
@@ -1,115 +0,0 @@
-#include "project.h"
-
-static const uint8_t mouse_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, 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)             */
-  0x05, 0x01,                   /*     USAGE_PAGE (Generic Desktop)     */
-  0x09, 0x30,                   /*     USAGE (X)                        */
-  0x09, 0x31,                   /*     USAGE (Y)                        */
-  0x09, 0x38,                   /*     USAGE (Wheel)                    */
-  0x15, 0x81,                   /*     LOGICAL_MINIMUM (-127)           */
-  0x25, 0x7f,                   /*     LOGICAL_MAXIMUM (127)            */
-  0x75, 0x08,                   /*     REPORT_SIZE (8)                  */
-  0x95, 0x03,                   /*     REPORT_COUNT (3)                 */
-  0x81, 0x06,                   /*     INPUT (Data,Var,Rel)             */
-  0xc0,                         /*   END_COLLECTION                     */
-  0x09, 0x3c,                   /*   USAGE (Motion Wakeup)              */
-  0x05, 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)) mouse_function =
-{
-  .hid_descriptor =
-  {
-  .bLength = sizeof (mouse_function),.bDescriptorType = USB_DT_HID,.bcdHID =
-      0x0100,.bCountryCode = 0,.bNumDescriptors = 1,}
-  ,.hid_report =
-  {
-  .bReportDescriptorType = USB_DT_REPORT,.wDescriptorLength =
-      sizeof (mouse_report_descriptor),}
-,};
-
-const struct usb_endpoint_descriptor mouse_endpoint = {
-  .bLength = USB_DT_ENDPOINT_SIZE,
-  .bDescriptorType = USB_DT_ENDPOINT,
-  .bEndpointAddress = 0x82,
-  .bmAttributes = USB_ENDPOINT_ATTR_INTERRUPT,
-  .wMaxPacketSize = 4,
-  .bInterval = 0x20,
-};
-
-const struct usb_interface_descriptor mouse_iface = {
-  .bLength = USB_DT_INTERFACE_SIZE,
-  .bDescriptorType = USB_DT_INTERFACE,
-  .bInterfaceNumber = 1,
-  .bAlternateSetting = 0,
-  .bNumEndpoints = 1,
-  .bInterfaceClass = USB_CLASS_HID,
-  .bInterfaceSubClass = 1,      /* boot */
-  .bInterfaceProtocol = 2,      /* mouse */
-  .iInterface = 0,
-
-  .endpoint = &mouse_endpoint,
-
-  .extra = &mouse_function,
-  .extralen = sizeof (mouse_function),
-};
-
-
-void
-mouse_get_descriptor (uint8_t ** buf, uint16_t * len)
-{
-
-  /* Handle the HID report descriptor. */
-  *buf = (uint8_t *) mouse_report_descriptor;
-  *len = sizeof (mouse_report_descriptor);
-}
-
-void
-mouse_test (void)
-{
-  static int c = 1;
-  uint8_t buf[4] = { 0, 0, 0, 0 };
-
-  buf[0] = c & 7;
-
-  buf[1] = c & 8 ? -1 : 1;
-  buf[2] = c & 16 ? -1 : 1;
-  buf[3] = c & 32 ? -1 : 1;
-
-  c++;
-
-  usbd_ep_write_packet (usbd_dev, 0x82, buf, 4);
-}
diff --git a/src/project.h b/src/project.h
deleted file mode 100644
index 0323569..0000000
--- a/src/project.h
+++ /dev/null
@@ -1,23 +0,0 @@
-#include <stdlib.h>
-#include <libopencm3/stm32/rcc.h>
-#include <libopencm3/stm32/gpio.h>
-#include <libopencm3/stm32/usart.h>
-#include <libopencm3/cm3/systick.h>
-#include <libopencm3/cm3/nvic.h>
-#include <libopencm3/usb/usbd.h>
-#include <libopencm3/usb/hid.h>
-
-#define INCLUDE_DFU_INTERFACE
-
-
-#ifdef INCLUDE_DFU_INTERFACE
-#include <libopencm3/cm3/scb.h>
-#include <libopencm3/usb/dfu.h>
-#endif
-
-#include <stdio.h>
-#include <errno.h>
-
-#include "ring.h"
-
-#include "prototypes.h"
diff --git a/src/prototypes.h b/src/prototypes.h
deleted file mode 100644
index 0e971df..0000000
--- a/src/prototypes.h
+++ /dev/null
@@ -1,43 +0,0 @@
-/* dfu.c */
-extern const struct usb_dfu_descriptor dfu_function;
-extern const struct usb_interface_descriptor dfu_iface;
-extern int dfu_control_request(usbd_device *usbd_dev, struct usb_setup_data *req, uint8_t **buf, uint16_t *len, void (**complete)(usbd_device *usbd_dev, struct usb_setup_data *req));
-/* mouse.c */
-extern const struct usb_endpoint_descriptor mouse_endpoint;
-extern const struct usb_interface_descriptor mouse_iface;
-extern void mouse_get_descriptor(uint8_t **buf, uint16_t *len);
-extern void mouse_test(void);
-/* keyboard.c */
-extern const struct usb_endpoint_descriptor keyboard_endpoint;
-extern const struct usb_interface_descriptor keyboard_iface;
-extern void keyboard_get_descriptor(uint8_t **buf, uint16_t *len);
-extern void keyboard_test(void);
-/* main.c */
-extern void sys_tick_handler(void);
-extern int main(void);
-/* usb.c */
-extern const struct usb_device_descriptor dev;
-extern const struct usb_interface ifaces[];
-extern const struct usb_config_descriptor config;
-extern usbd_device *usbd_dev;
-extern void usb_set_config(usbd_device *usbd_dev, uint16_t wValue);
-extern void usb_init(void);
-extern void usb_run(void);
-/* tablet.c */
-extern const struct usb_endpoint_descriptor tablet_endpoint;
-extern const struct usb_interface_descriptor tablet_iface;
-extern void tablet_get_descriptor(uint8_t **buf, uint16_t *len);
-extern void tablet_test(void);
-/* usart.c */
-extern void usart1_isr(void);
-extern int _write(int file, char *ptr, int len);
-extern void usart_queue(uint8_t d);
-extern void usart_init(void);
-/* kvm.c */
-extern void kvm_dispatch(void);
-extern void kvm_recv(uint8_t d);
-/* ring.c */
-extern void ring_init(ring_t *r, uint8_t *buf, size_t len);
-extern int ring_write_byte(ring_t *r, uint8_t c);
-extern int ring_read_byte(ring_t *r, uint8_t *c);
-extern int ring_write(ring_t *r, uint8_t *buf, size_t len);
diff --git a/src/ring.c b/src/ring.c
deleted file mode 100644
index 4f38e44..0000000
--- a/src/ring.c
+++ /dev/null
@@ -1,61 +0,0 @@
-#include "project.h"
-
-
-static inline size_t
-ring_next (ring_t * r, size_t p)
-{
-  p++;
-  if (p >= r->size)
-    p -= r->size;
-  return p;
-}
-
-void
-ring_init (ring_t * r, uint8_t * buf, size_t len)
-{
-  r->data = buf;
-  r->size = len;
-  r->write = 0;
-  r->read = 0;
-}
-
-int
-ring_write_byte (ring_t * r, uint8_t c)
-{
-  size_t n = ring_next (r, r->write);
-
-  if (n == r->read)
-    return -1;
-
-  r->data[r->write] = c;
-  r->write = n;
-
-  return 0;
-}
-
-
-int
-ring_read_byte (ring_t * r, uint8_t * c)
-{
-  size_t n = ring_next (r, r->read);
-
-  if (r->read == r->write)
-    return -1;
-
-  *c = r->data[r->read];
-  r->read = n;
-
-  return 0;
-}
-
-int
-ring_write (ring_t * r, uint8_t * buf, size_t len)
-{
-  while (len--)
-    {
-      if (ring_write_byte (r, *(buf++)))
-        return -1;
-    }
-
-  return 0;
-}
diff --git a/src/ring.h b/src/ring.h
deleted file mode 100644
index 4e3a22c..0000000
--- a/src/ring.h
+++ /dev/null
@@ -1,9 +0,0 @@
-typedef struct ring
-{
-  uint8_t *data;
-  size_t size;
-  size_t write;
-  size_t read;
-} ring_t;
-
-
diff --git a/src/tablet.c b/src/tablet.c
deleted file mode 100644
index 1073b37..0000000
--- a/src/tablet.c
+++ /dev/null
@@ -1,122 +0,0 @@
-#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);
-}
diff --git a/src/usart.c b/src/usart.c
deleted file mode 100644
index b0ea2a4..0000000
--- a/src/usart.c
+++ /dev/null
@@ -1,104 +0,0 @@
-#include "project.h"
-
-#define BUFFER_SIZE 256
-
-static ring_t output_ring;
-static uint8_t output_ring_buf[BUFFER_SIZE];
-
-void
-usart1_isr (void)
-{
-  uint8_t data;
-
-  /* Check if we were called because of RXNE. */
-  if (((USART_CR1 (USART1) & USART_CR1_RXNEIE) != 0) &&
-      ((USART_SR (USART1) & USART_SR_RXNE) != 0))
-    {
-
-      /* Retrieve the data from the peripheral. */
-      data = usart_recv (USART1);
-
-      kvm_recv (data);
-    }
-
-  /* Check if we were called because of TXE. */
-  if (((USART_CR1 (USART1) & USART_CR1_TXEIE) != 0) &&
-      ((USART_SR (USART1) & USART_SR_TXE) != 0))
-    {
-
-      if (ring_read_byte (&output_ring, &data))
-        {
-          /*No more data, Disable the TXE interrupt, it's no longer needed. */
-          USART_CR1 (USART1) &= ~USART_CR1_TXEIE;
-        }
-      else
-        {
-          usart_send (USART1, data);
-        }
-    }
-
-}
-
-int
-_write (int file, char *ptr, int len)
-{
-  int ret;
-
-  if (file == 1)
-    {
-      ret = ring_write (&output_ring, (uint8_t *) ptr, len);
-
-      if (ret < 0)
-        ret = -ret;
-
-      USART_CR1 (USART1) |= USART_CR1_TXEIE;
-      return ret;
-    }
-
-  errno = EIO;
-  return -1;
-}
-
-void
-usart_queue (uint8_t d)
-{
-  ring_write_byte(&output_ring,d);
-  USART_CR1 (USART1) |= USART_CR1_TXEIE;
-
-#if 0
-  printf ("0x%02x ", d);
-  fflush (stdout);
-#endif
-}
-
-
-void
-usart_init (void)
-{
-  ring_init (&output_ring, output_ring_buf, sizeof (output_ring_buf));
-
-  /* Enable the USART1 interrupt. */
-  nvic_enable_irq (NVIC_USART1_IRQ);
-
-  /* Setup GPIO pin GPIO_USART1_RE_TX on GPIO port B for transmit. */
-  gpio_set_mode (GPIOA, GPIO_MODE_OUTPUT_50_MHZ,
-                 GPIO_CNF_OUTPUT_ALTFN_PUSHPULL, GPIO_USART1_TX);
-
-  /* Setup GPIO pin GPIO_USART1_RE_RX on GPIO port B for receive. */
-  gpio_set_mode (GPIOA, GPIO_MODE_INPUT,
-                 GPIO_CNF_INPUT_FLOAT, GPIO_USART1_RX);
-
-  /* Setup UART parameters. */
-  usart_set_baudrate (USART1, 38400);
-  usart_set_databits (USART1, 8);
-  usart_set_stopbits (USART1, USART_STOPBITS_1);
-  usart_set_parity (USART1, USART_PARITY_NONE);
-  usart_set_flow_control (USART1, USART_FLOWCONTROL_NONE);
-  usart_set_mode (USART1, USART_MODE_TX_RX);
-
-  /* Enable USART1 Receive interrupt. */
-  USART_CR1 (USART1) |= USART_CR1_RXNEIE;
-
-  /* Finally enable the USART. */
-  usart_enable (USART1);
-}
diff --git a/src/usb.c b/src/usb.c
deleted file mode 100644
index f796162..0000000
--- a/src/usb.c
+++ /dev/null
@@ -1,146 +0,0 @@
-#include "project.h"
-
-/* Define this to include the DFU APP interface. */
-const struct usb_device_descriptor dev = {
-  .bLength = USB_DT_DEVICE_SIZE,
-  .bDescriptorType = USB_DT_DEVICE,
-  .bcdUSB = 0x0200,
-  .bDeviceClass = 0,
-  .bDeviceSubClass = 0,
-  .bDeviceProtocol = 0,
-  .bMaxPacketSize0 = 64,
-  .idVendor = 0x1d6b,
-  .idProduct = 0x0ee3,
-  .bcdDevice = 0x0200,
-  .iManufacturer = 1,
-  .iProduct = 2,
-  .iSerialNumber = 3,
-  .bNumConfigurations = 1,
-};
-
-const struct usb_interface ifaces[] = {
-  {
-   .num_altsetting = 1,
-   .altsetting = &keyboard_iface,
-   },
-  {
-   .num_altsetting = 1,
-   .altsetting = &mouse_iface,
-   },
-  {
-   .num_altsetting = 1,
-   .altsetting = &tablet_iface,
-   },
-#ifdef INCLUDE_DFU_INTERFACE
-  {
-   .num_altsetting = 1,
-   .altsetting = &dfu_iface,
-#endif
-   }
-};
-
-const struct usb_config_descriptor config = {
-  .bLength = USB_DT_CONFIGURATION_SIZE,
-  .bDescriptorType = USB_DT_CONFIGURATION,
-  .wTotalLength = 0,
-#ifdef INCLUDE_DFU_INTERFACE
-  .bNumInterfaces = 4,
-#else
-  .bNumInterfaces = 3,
-#endif
-  .bConfigurationValue = 1,
-  .iConfiguration = 0,
-  .bmAttributes = 0xC0,
-  .bMaxPower = 0x32,
-
-  .interface = ifaces,
-};
-
-static const char *usb_strings[] = {
-  "Cabbages are good for you",
-  "fish",
-  "soup",
-};
-
-
-
-usbd_device *usbd_dev;
-
-
-static int
-usb_control_request (usbd_device * usbd_dev, struct usb_setup_data *req,
-                     uint8_t ** buf, uint16_t * len,
-                     void (**complete) (usbd_device * usbd_dev,
-                                        struct usb_setup_data * req))
-{
-
-  (void) complete;
-  (void) usbd_dev;
-
-  if ((req->bmRequestType != 0x81) ||
-      (req->bRequest != USB_REQ_GET_DESCRIPTOR) || (req->wValue != 0x2200))
-    return 0;
-
-  switch (req->wIndex)
-    {
-    case 0:
-      keyboard_get_descriptor (buf, len);
-      return 1;
-    case 1:
-      mouse_get_descriptor (buf, len);
-      return 1;
-    case 2:
-      tablet_get_descriptor (buf, len);
-      return 1;
-    }
-
-  *len = 0;
-  return 0;
-}
-
-
-void
-usb_set_config (usbd_device * usbd_dev, uint16_t wValue)
-{
-  (void) wValue;
-  (void) usbd_dev;
-
-  usbd_ep_setup (usbd_dev, 0x81, USB_ENDPOINT_ATTR_INTERRUPT, 4, NULL);
-  usbd_ep_setup (usbd_dev, 0x82, USB_ENDPOINT_ATTR_INTERRUPT, 4, NULL);
-  usbd_ep_setup (usbd_dev, 0x83, USB_ENDPOINT_ATTR_INTERRUPT, 4, NULL);
-
-  usbd_register_control_callback (usbd_dev,
-                                  USB_REQ_TYPE_STANDARD |
-                                  USB_REQ_TYPE_INTERFACE,
-                                  USB_REQ_TYPE_TYPE | USB_REQ_TYPE_RECIPIENT,
-                                  usb_control_request);
-
-#ifdef INCLUDE_DFU_INTERFACE
-  usbd_register_control_callback (usbd_dev,
-                                  USB_REQ_TYPE_CLASS | USB_REQ_TYPE_INTERFACE,
-                                  USB_REQ_TYPE_TYPE | USB_REQ_TYPE_RECIPIENT,
-                                  dfu_control_request);
-#endif
-}
-
-/* Buffer to be used for control requests. */
-static uint8_t usbd_control_buffer[128];
-
-void
-usb_init (void)
-{
-
-  usbd_dev =
-    usbd_init (&stm32f103_usb_driver, &dev, &config, usb_strings, 3,
-               usbd_control_buffer, sizeof (usbd_control_buffer));
-
-  usbd_register_set_config_callback (usbd_dev, usb_set_config);
-
-}
-
-void
-usb_run (void)
-{
-  while (1)
-    usbd_poll (usbd_dev);
-}