=====> 輸出信息:
No device specified, trying to scan all of /dev/input/event*
Available devices:
/dev/input/event0: WM8962 Beep Generator
/dev/input/event1: gpio-keys
Select the device event number [0-1]:
選擇 gpio-keys 所對應的序號
=====> 輸入指令:
1
=====> 輸出信息:
Input driver version is 1.0.1
Input device ID: bus 0x19 vendor 0x1 product 0x1 version 0x100
Input device name: "gpio-keys"
Supported events:
Event type 0 (EV_SYN)
Event type 1 (EV_KEY)
Event code 114 (KEY_VOLUMEDOWN)
Event code 115 (KEY_VOLUMEUP)
Event code 116 (KEY_POWER)
Properties:
Testing ... (interrupt to exit)
按動開發板上的按鍵
Event: time 1537921332.815219, type 1 (EV_KEY), code 114 (KEY_VOLUMEDOWN), value 1
Event: time 1537921332.815219, -------------- SYN_REPORT ------------
Event: time 1537921332.985211, type 1 (EV_KEY), code 114 (KEY_VOLUMEDOWN), value 0
Event: time 1537921332.985211, -------------- SYN_REPORT ------------
Event: time 1537921335.355204, type 1 (EV_KEY), code 115 (KEY_VOLUMEUP), value 1
Event: time 1537921335.355204, -------------- SYN_REPORT ------------
Event: time 1537921335.535203, type 1 (EV_KEY), code 115 (KEY_VOLUMEUP), value 0
Event: time 1537921335.535203, -------------- SYN_REPORT ------------
Event: time 1537921337.375207, type 1 (EV_KEY), code 116 (KEY_POWER), value 1
Event: time 1537921337.375207, -------------- SYN_REPORT ------------
Event: time 1537921337.535204, type 1 (EV_KEY), code 116 (KEY_POWER), value 0
Event: time 1537921337.535204, -------------- SYN_REPORT ------------
測試結果
當發生按鍵時,evtest 會輸出相應的信息。