AnsweredAssumed Answered

mx51 Android R10.4(using ADS7846) , touchscreen didn't work

Question asked by zhaozhao on Nov 25, 2013
Latest reply on Nov 25, 2013 by zhaozhao

Hi all

     We are using ads7846 on our custom mx51 board(without battery). What I modified is :

1) make sure the touchscreen name is ads7846, and change TARGET_TS_DEVICE := "mxc_ts" to TARGET_TS_DEVICE := "ads7846"  in the file device/fsl/imx5x/BoardConfigCommon.mk

2) with getevent, I got :

     # getevent
add device 1: /dev/input/event1
  name:     "mxc_power_key"
add device 2: /dev/input/event0
  name:     "mxckpd"
could not get driver version for /dev/input/mice, Not a typewriter
add device 3: /dev/input/event2
  name:     "ads7846"
could not get driver version for /dev/input/mouse0, Not a typewriter
/dev/input/event2: 0001 014a 000calib xc = 392, x = 6177, yc = 300, y = 6589
00001
/dev/input/event2: 0003 0000 00000188
/dev/input/event2: 0003 0001 0000012c
/dev/input/event2: 0003 0018 00003a2d
/dev/input/event2: 0000 0000 00000000
calib xc = 379, x = 6241, yc = 297, y = 6572
/dev/input/event2: 0003 0000 0000017b
/dev/input/event2: 0003 0001 00000129
/dev/input/event2: 0003 0018 00003a3c
/dev/input/event2: 0000 0000 00000000
calib xc = 388, x = 6198, yc = 299, y = 6583
/dev/input/event2: 0003 0000 00000184
/dev/input/event2: 0003 0001 0000012b
/dev/input/event2: 0003 0018 00003a32
/dev/input/event2: 0000 0000 00000000
/dev/input/event2: 0001 014a 00000000
/dev/input/event2: 0003 0018 00000000
/dev/input/event2: 0000 0000 00000000
/dev/input/event2: 0001 014a 000calib xc = 397, x = 6161, yc = 385, y = 7243
00001
/dev/input/event2: 0003 0000 0000018d
/dev/input/event2: 0003 0001 00000181
/dev/input/event2: 0003 0018 00003a32
/dev/input/event2: 0000 0000 00000000
/dev/input/event2: 0001 014a 00000000
/dev/input/event2: 0003 0018 00000000
/dev/input/event2: 0000 0000 00000000

 

3) I calibrated the touch screen, and got the points that seem right.

I can draw lines on the screen  when using tslib under Linux.

I cannot get the right action under android(there seems to be some actions, but not correct). here is part of the logcat information.

 

 

V/EventHub( 1969): /dev/input/evcalib xc = 381, x = 6233, yc = 338, y = 6878
ent2 got: t0=37, t1=644371, type=1, code=330, v=1
V/EventHub( 1969): iev.code=330 keyCode=0 flags=0x00000000 err=-19
D/InputReader( 1969): Input event: device=0x10002 type=0x1 scancode=330 keycode=0 value=1
V/EventHub( 1969): /dev/input/event2 got: t0=37, t1=651758, type=3, code=0, v=381
D/InputReader( 1969): Input event: device=0x10002 type=0x3 scancode=0 keycode=0 value=381
V/EventHub( 1969calib xc = 380, x = 6237, yc = 343, y = 6921
): /dev/input/event2 got: t0=37, t1=651951, type=3, code=1, v=338
D/InputReader( 1969): Input event: device=0x10002 type=0x3 scancode=1 keycode=1 value=338
V/EventHub( 1969): /dev/input/event2 got: t0=37, t1=652158, type=3, code=24, v=14910
D/InputReader( 1969): Input event: device=0x10002 type=0x3 scancode=24 keycode=24 value=14910
V/EventHub( 1calib xc = 378, x = 6249, yc = 344, y = 6928
969): /dev/input/event2 got: t0=37, t1=652369, type=0, code=0, v=0
D/InputReader( 1969): Input event: device=0x10002 type=0x0 scancode=0 keycode=0 value=0clicked
I/InputReader( 1969): Device reconfigured: id=0x10002, name=ads7846, display size is now 800x480
I/InputManager-Callbacks( 1969): No virtual keys found for device ads7846.
V/EventHub( 1969): /dev/input/event2 got: t0=37, t1=690437, type=3, code=0, v=380
D/InputReader( 1969): Input event: device=0x10002 type=0x3 scancode=0 keycode=0 value=380
V/EventHub( 1969): /dev/input/event2 got: t0=37, t1=690817, type=3, code=1, v=343
D/InputReader( 1969): Input event: device=0x10002 type=0x3 scancode=1 keycode=1 value=343
V/EventHub( 1969): /dev/input/event2 got: t0=37, t1=691053, type=3, code=24, v=14923
D/InputReader( 1969): Input event: device=0x10002 type=0x3 scancode=24 keycode=24 value=14923
V/EventHub( 1969): /dev/input/event2 got: t0=37, t1=691275, type=0, code=0, v=0
D/InputReader( 1969): Input event: device=0x10002 type=0x0 scancode=0 keycode=0 value=0
V/EventHub( 1969): /dev/input/event2 got: t0=37, t1=724994, type=3, code=0, v=378
D/InputReader( 1969): Input event: device=0x10002 type=0x3 scancode=0 keycode=0 value=378
V/EventHub( 1969): /dev/input/event2 got: t0=37, t1=725253, type=3, code=1, v=344
D/InputReader( 1969): Input event: device=0x10002 type=0x3 scancode=1 keycode=1 value=344
V/EventHub( 1969): /dev/input/event2 got: t0=37, t1=725468, type=3, code=24, v=14927
D/InputReader( 1969): Input event: device=0x10002 type=0x3 scancode=24 keycode=24 value=14927
V/EventHub( 1969): /dev/input/event2 got: t0=37, t1=725681, type=0, code=0, v=0
D/InputReader( 1969): Input event: device=0x10002 type=0x0 scancode=0 keycode=0 value=0
V/EventHub( 1969): /dev/input/event2 got: t0=37, t1=805270, type=1, code=330, v=0
V/EventHub( 1969): iev.code=330 keyCode=0 flags=0x00000000 err=-19
D/InputReader( 1969): Input event: device=0x10002 type=0x1 scancode=330 keycode=0 value=0
V/EventHub( 1969): /dev/input/event2 got: t0=37, t1=805283, type=3, code=24, v=0
D/InputReader( 1969): Input event: device=0x10002 type=0x3 scancode=24 keycode=24 value=0
V/EventHub( 1969): /dev/input/event2 got: t0=37, t1=805291, type=0, code=0, v=0
D/InputReader( 1969): Input event: device=0x10002 type=0x0 scancode=0 keycode=0 value=0

 

 

Can anyone help me on this?

Thanks

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