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- #include "usb_dev.h"
- #include "usb_mouse.h"
- #include "core_pins.h"
- #include <string.h> // for memcpy()
- #include "avr/pgmspace.h"
- #include "debug/printf.h"
- #include "core_pins.h"
-
- #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)
-
- 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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- #define TX_NUM 4
- #define TX_BUFSIZE 32
- static transfer_t tx_transfer[TX_NUM] __attribute__ ((used, aligned(32)));
- DMAMEM static uint8_t txbuffer[TX_NUM * TX_BUFSIZE] __attribute__ ((aligned(32)));
- static uint8_t tx_head=0;
- #if MOUSE_SIZE > TX_BUFSIZE
- #error "Internal error, transmit buffer size is too small for mouse endpoint"
- #endif
-
-
- void usb_mouse_configure(void)
- {
- memset(tx_transfer, 0, sizeof(tx_transfer));
- tx_head = 0;
- usb_config_tx(MOUSE_ENDPOINT, MOUSE_SIZE, 0, NULL);
- }
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-
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- int usb_mouse_buttons(uint8_t left, uint8_t middle, uint8_t right, uint8_t back, uint8_t forward)
- {
- uint8_t mask=0;
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- if (left) mask |= 1;
- if (middle) mask |= 4;
- if (right) mask |= 2;
- if (back) mask |= 8;
- if (forward) mask |= 16;
- usb_mouse_buttons_state = mask;
- return usb_mouse_move(0, 0, 0, 0);
- }
-
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- static uint8_t transmit_previous_timeout=0;
-
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- #define TX_TIMEOUT_MSEC 30
-
- static int usb_mouse_transmit(const uint8_t *data, uint32_t len)
- {
- if (!usb_configuration) return -1;
- uint32_t head = tx_head;
- transfer_t *xfer = tx_transfer + head;
- uint32_t wait_begin_at = systick_millis_count;
- while (1) {
- uint32_t status = usb_transfer_status(xfer);
- if (!(status & 0x80)) {
- if (status & 0x68) {
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- printf("ERROR status = %x, i=%d, ms=%u\n",
- status, tx_head, systick_millis_count);
- }
- transmit_previous_timeout = 0;
- break;
- }
- if (transmit_previous_timeout) return -1;
- if (systick_millis_count - wait_begin_at > TX_TIMEOUT_MSEC) {
-
- transmit_previous_timeout = 1;
- return -1;
- }
- if (!usb_configuration) return -1;
- yield();
- }
- uint8_t *buffer = txbuffer + head * TX_BUFSIZE;
- memcpy(buffer, data, len);
- usb_prepare_transfer(xfer, buffer, len, 0);
- arm_dcache_flush_delete(buffer, TX_BUFSIZE);
- usb_transmit(MOUSE_ENDPOINT, xfer);
- if (++head >= TX_NUM) head = 0;
- tx_head = head;
- return 0;
- }
-
-
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- int usb_mouse_move(int8_t x, int8_t y, int8_t wheel, int8_t horiz)
- {
-
- if (x == -128) x = -127;
- if (y == -128) y = -127;
- if (wheel == -128) wheel = -127;
- if (horiz == -128) horiz = -127;
-
- uint8_t buffer[6];
- buffer[0] = 1;
- buffer[1] = usb_mouse_buttons_state;
- buffer[2] = x;
- buffer[3] = y;
- buffer[4] = wheel;
- buffer[5] = horiz;
- return usb_mouse_transmit(buffer, 6);
- }
-
- 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;
- uint8_t buffer[5];
- buffer[0] = 2;
- uint32_t val32 = usb_mouse_position_x * usb_mouse_scale_x + usb_mouse_offset_x;
-
- buffer[1] = val32 >> 16;
- buffer[2] = val32 >> 24;
- val32 = usb_mouse_position_y * usb_mouse_scale_y + usb_mouse_offset_y;
-
- buffer[3] = val32 >> 16;
- buffer[4] = val32 >> 24;
- return usb_mouse_transmit(buffer, 5);
- }
-
- 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;
- }
- }
-
-
- #endif
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