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- #include "usb_dev.h"
- #include "usb_mouse.h"
- #include "core_pins.h"
- #include "HardwareSerial.h"
- #include <string.h> // for memcpy()
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- #ifdef MOUSE_INTERFACE
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- uint8_t usb_mouse_buttons_state=0;
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- #define DEFAULT_XRES 1366
- #define DEFAULT_YRES 768
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- #define DEFAULT_XSCALE ((0x80000000ul+DEFAULT_XRES/2)/DEFAULT_XRES)
- #define DEFAULT_YSCALE ((0x80000000ul+DEFAULT_YRES/2)/DEFAULT_YRES)
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- static uint16_t usb_mouse_resolution_x=DEFAULT_XRES;
- static uint16_t usb_mouse_resolution_y=DEFAULT_YRES;
- static uint16_t usb_mouse_position_x=DEFAULT_XRES/2;
- static uint16_t usb_mouse_position_y=DEFAULT_YRES/2;
- static uint32_t usb_mouse_scale_x=DEFAULT_XSCALE;
- static uint32_t usb_mouse_scale_y=DEFAULT_YSCALE;
- static uint32_t usb_mouse_offset_x=DEFAULT_XSCALE/2-1;
- static uint32_t usb_mouse_offset_y=DEFAULT_YSCALE/2-1;
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- int usb_mouse_buttons(uint8_t left, uint8_t middle, uint8_t right)
- {
- uint8_t mask=0;
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- if (left) mask |= 1;
- if (middle) mask |= 4;
- if (right) mask |= 2;
- usb_mouse_buttons_state = mask;
- return usb_mouse_move(0, 0, 0);
- }
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- #define TX_PACKET_LIMIT 3
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- static uint8_t transmit_previous_timeout=0;
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- #define TX_TIMEOUT_MSEC 30
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- #if F_CPU == 96000000
- #define TX_TIMEOUT (TX_TIMEOUT_MSEC * 596)
- #elif F_CPU == 48000000
- #define TX_TIMEOUT (TX_TIMEOUT_MSEC * 428)
- #elif F_CPU == 24000000
- #define TX_TIMEOUT (TX_TIMEOUT_MSEC * 262)
- #endif
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- int usb_mouse_move(int8_t x, int8_t y, int8_t wheel)
- {
- uint32_t wait_count=0, val32;
- usb_packet_t *tx_packet;
- uint16_t newval;
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- if (x == -128) x = -127;
- if (y == -128) y = -127;
- if (wheel == -128) wheel = -127;
- if (x > 0) {
- newval = usb_mouse_position_x + x;
- if (newval >= usb_mouse_resolution_x) newval = usb_mouse_resolution_x - 1;
- usb_mouse_position_x = newval;
- } else if (x < 0) {
- newval = usb_mouse_position_x + x;
- if (newval & 0x8000) newval = 0;
- usb_mouse_position_x = newval;
- }
- if (y > 0) {
- newval = usb_mouse_position_y + y;
- if (newval >= usb_mouse_resolution_y) newval = usb_mouse_resolution_y - 1;
- usb_mouse_position_y = newval;
- } else if (y < 0) {
- newval = usb_mouse_position_y + y;
- if (newval & 0x8000) newval = 0;
- usb_mouse_position_y = newval;
- }
- while (1) {
- if (!usb_configuration) {
- return -1;
- }
- if (usb_tx_packet_count(MOUSE_ENDPOINT) < TX_PACKET_LIMIT) {
- tx_packet = usb_malloc();
- if (tx_packet) break;
- }
- if (++wait_count > TX_TIMEOUT || transmit_previous_timeout) {
- transmit_previous_timeout = 1;
- return -1;
- }
- yield();
- }
- transmit_previous_timeout = 0;
- *(tx_packet->buf) = usb_mouse_buttons_state;
- val32 = usb_mouse_position_x * usb_mouse_scale_x + usb_mouse_offset_x;
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- *(tx_packet->buf + 1) = val32 >> 16;
- *(tx_packet->buf + 2) = val32 >> 24;
- val32 = usb_mouse_position_y * usb_mouse_scale_y + usb_mouse_offset_y;
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- *(tx_packet->buf + 3) = val32 >> 16;
- *(tx_packet->buf + 4) = val32 >> 24;
- *(tx_packet->buf + 5) = wheel;
- tx_packet->len = 6;
- usb_tx(MOUSE_ENDPOINT, tx_packet);
- return 0;
- }
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- int usb_mouse_position(uint16_t x, uint16_t y)
- {
- if (x >= usb_mouse_resolution_x) x = usb_mouse_resolution_x - 1;
- usb_mouse_position_x = x;
- if (y >= usb_mouse_resolution_y) y = usb_mouse_resolution_y - 1;
- usb_mouse_position_y = y;
- return usb_mouse_move(0, 0, 0);
- }
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- void usb_mouse_screen_size(uint16_t width, uint16_t height, uint8_t mac)
- {
- if (width < 128) width = 128;
- else if (width > 7680) width = 7680;
- if (height < 128) height = 128;
- else if (height > 7680) height = 7680;
- usb_mouse_resolution_x = width;
- usb_mouse_resolution_y = height;
- usb_mouse_position_x = width / 2;
- usb_mouse_position_y = height / 2;
- usb_mouse_scale_x = (0x80000000ul + (width >> 1)) / width;
- usb_mouse_scale_y = (0x80000000ul + (height >> 1)) / height;
- usb_mouse_offset_x = (usb_mouse_scale_x >> 1) - 1;
- usb_mouse_offset_y = (usb_mouse_scale_y >> 1) - 1;
- if (mac) {
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- usb_mouse_offset_x += 161061273ul;
- usb_mouse_offset_y += 161061273ul;
- usb_mouse_scale_x = (1825361101ul + (width >> 1)) / width;
- usb_mouse_scale_y = (1825361101ul + (height >> 1)) / height;
- }
- }
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- #endif
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