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USBMouse
The USBMouse interface is used to emulate a mouse over the USB port. You can choose relative or absolute co-ordinates, and send clicks, button state and scroll wheel movements.
The USB connector should be attached to p31 (D+), p32 (D-) and GND. You can also connect the USB power to VIN to power the mbed when connected.
Hello World¶
USBMouse Hello World!
#include "mbed.h"
#include "USBMouse.h"
USBMouse mouse;
int main() {
int16_t x = 0;
int16_t y = 0;
int32_t radius = 10;
int32_t angle = 0;
while (1) {
x = cos((double)angle*3.14/180.0)*radius;
y = sin((double)angle*3.14/180.0)*radius;
mouse.move(x, y);
angle += 3;
wait(0.001);
}
}
API¶
Import library
Public Member Functions |
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| USBMouse (MOUSE_TYPE mouse_type=REL_MOUSE, uint16_t vendor_id=0x1234, uint16_t product_id=0x0001, uint16_t product_release=0x0001) | |
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Constructor.
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| bool | update (int16_t x, int16_t y, uint8_t buttons, int8_t z) |
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Write a state of the mouse.
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| bool | move (int16_t x, int16_t y) |
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Move the cursor to (x, y)
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| bool | press (uint8_t button) |
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Press one or several buttons.
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| bool | release (uint8_t button) |
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Release one or several buttons.
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| bool | doubleClick () |
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Double click (MOUSE_LEFT)
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| bool | click (uint8_t button) |
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Click.
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| bool | scroll (int8_t z) |
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Scrolling.
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| bool | send (HID_REPORT *report) |
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Send a Report.
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| bool | sendNB (HID_REPORT *report) |
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Send a Report.
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| bool | read (HID_REPORT *report) |
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Read a report: blocking.
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| bool | readNB (HID_REPORT *report) |
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Read a report: non blocking.
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Details¶
You can choose either a relative mouse or an absolute mouse. By default, a USBMouse is a relative mouse. For instance, you can use an absolute mouse to draw a circle:
#include "mbed.h"
#include "USBMouse.h"
USBMouse mouse(ABS_MOUSE);
#include <math.h>
int main(void)
{
uint16_t x_center = (X_MAX_ABS - X_MIN_ABS)/2;
uint16_t y_center = (Y_MAX_ABS - Y_MIN_ABS)/2;
uint16_t x_screen = 0;
uint16_t y_screen = 0;
uint32_t x_origin = x_center;
uint32_t y_origin = y_center;
uint32_t radius = 5000;
uint32_t angle = 0;
while (1)
{
x_screen = x_origin + cos((double)angle*3.14/180.0)*radius;
y_screen = y_origin + sin((double)angle*3.14/180.0)*radius;
mouse.move(x_screen, y_screen);
angle += 3;
wait(0.01);
}
}