Input Driver Sample using Fuchsia SDK

This sample input driver implements fuchsia.input.report using the input_reports_reader SDK to send fake mouse reports every 1 second.

Run and test driver

After starting up the emulator

1. Load the sample driver

   bazel run --config=fuchsia_x64 src/input_sample:pkg.component
   

2. Read the fake input mouse descriptor

   tools/ffx driver print-input-report descriptor
   

   This should return a list of descriptors. The fake mouse descriptor for this driver is

   Descriptor from file: "class/input-report/002"
   {
      device_info: {
         vendor_id: 305419896
         product_id: 2271560481
         version: 0
      }
      mouse: {
         input: {
            movement_x: {
               range: {
                  min: -127
                  max: 127
               }
               unit: {
                  type: None
                  exponent: 0
               }
            }
            movement_y: {
               range: {
                  min: -127
                  max: 127
               }
               unit: {
                  type: None
                  exponent: 0
               }
            }
            scroll_v: None
            scroll_h: None
            buttons: [1, 2, 3]
            position_x: None
            position_y: None
         }
      }
      sensor: None
      touch: None
      keyboard: None
      consumer_control: None
   }
   

   In particular, it should be the one with

   vendor_id: 305419896     // 0x12345678
   product_id: 2271560481   // 0x87654321
   

   You may exit this with CTRL-C.

3. Read the fake input mouse reports

   tools/ffx driver print-input-report read
   

   This will produce logs that look like

   {
     event_time: 335266867991
     trace_id: 9
     report_id: None
     mouse: {
        movement_x: 29
        movement_y: 29
        scroll_v: None
        scroll_h: None
        pressed_buttons: [1, 3]
        position_x: None
        position_y: None
     }
     sensor: None
     touch: None
     keyboard: None
     consumer_control: None
   }
   

   once a second. Each second movement_x and movement_y should increment, pressed_buttons should change, and event_time should also change.

   You may exit this with CTRL-C.