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libts / tslib

Touchscreen access library
GNU Lesser General Public License v2.1
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ts_read works, ts_read_mt does not #195

Open OOHehir opened 2 years ago

OOHehir commented 2 years ago

Hello,

I'm using your library (v1.21) in conjunction with a SAMA5D4 Xplained board & a restive touchscreen.

I've run ts_calibrate & subsequently ts_read outputs:

1520602065.678729:    600    340   3443
1520602065.694748:    600    340   3387
1520602065.710742:    600    341   3297
1520602065.726734:    601    340   3235
1520602065.742740:    601    337   3193
1520602065.758743:    602    334   3121
1520602065.774743:    602    331   3063
1520602065.790742:    603    329   3028
1520602065.806742:    604    330   3003
1520602065.822741:    605    331   3015
1520602065.838731:    605    335   3064
1520602065.870743:    607    342   3177
1520602065.886727:    609    351   3220

But on running ts_test_mt I get no output. Its my understanding that ts_test_mt supports multi-touch screens but still support single touch screens. Below is the output of ts_verify:

root@sama5d4-xplained-sd:~# ts_verify
tslib 1.21 / libts ABI version 0 (0x000A03)
Release-Date: 2019-10-22

===================== test run 0 =====================
TEST ts_read_mt (blocking) 1       ......   PASS
TEST ts_read_mt (blocking) 5       ......   PASS
TEST ts_read_mt (nonblocking) 1    ......   PASS
TEST ts_read_mt (nonblocking) 5    ......   PASS
TEST ts_read    (blocking) 1       ......   PASS
TEST ts_read    (blocking) 5       ......   PASS
TEST ts_read    (nonblocking) 1    ......   PASS
TEST ts_read_raw_mt (blocking) 1   ......   PASS
TEST ts_read_raw_mt (blocking) 5   ......   PASS
TEST ts_read_raw_mt (nonblocking) 1......   PASS
TEST ts_read_raw_mt (nonblocking) 5......   PASS
TEST ts_read_raw(blocking) 1       ......   PASS
TEST ts_read_raw(blocking) 5       ......   PASS
TEST ts_read_raw(nonblocking) 1    ......   PASS
TEST ts_reconfig (1)               ......   PASS
TEST ts_load_module (4)            ......   PASS
======================================================
skip
===================== test run 1 =====================
TEST ts_read_mt (blocking) 1       ......   PASS
TEST ts_read_mt (blocking) 5       ......   PASS
TEST ts_read_mt (nonblocking) 1    ......   PASS
TEST ts_read_mt (nonblocking) 5    ......   PASS
TEST ts_read    (blocking) 1       ......   PASS
TEST ts_read    (blocking) 5       ......   PASS
TEST ts_read    (nonblocking) 1    ......   PASS
TEST ts_read_raw_mt (blocking) 1   ......   PASS
TEST ts_read_raw_mt (blocking) 5   ......   PASS
TEST ts_read_raw_mt (nonblocking) 1......   PASS
TEST ts_read_raw_mt (nonblocking) 5......   PASS
TEST ts_read_raw(blocking) 1       ......   PASS
TEST ts_read_raw(blocking) 5       ......   PASS
TEST ts_read_raw(nonblocking) 1    ......   PASS
TEST ts_reconfig (1)               ......   PASS
TEST ts_load_module (4)            ......   PASS
======================================================

ts_test_mt also works:

root@sama5d4-xplained-sd:~# ts_print_mt 
libts 000A04 opened device /dev/input/touchscreen0
sample 0 - 1520606139.568966 - (slot 0)   1435   2002   3604
sample 0 - 1520606139.584966 - (slot 0)   1458   2055   3415
sample 0 - 1520606139.600962 - (slot 0)   1483   2107   3351
sample 0 - 1520606139.616961 - (slot 0)   1508   2140   3365
sample 0 - 1520606139.632959 - (slot 0)   1555   2204   3276
sample 0 - 1520606139.648961 - (slot 0)   1605   2254   3237
sample 0 - 1520606139.664956 - (slot 0)   1660   2294   3254
sample 0 - 1520606139.680960 - (slot 0)   1712   2328   3210
sample 0 - 1520606139.696960 - (slot 0)   1765   2356   3214
sample 0 - 1520606139.712962 - (slot 0)   1814   2379   3227
sample 0 - 1520606139.728961 - (slot 0)   1856   2399   3128
sample 0 - 1520606139.744957 - (slot 0)   1894   2414   3106
sample 0 - 1520606139.760959 - (slot 0)   1923   2427   3065
sample 0 - 1520606139.776961 - (slot 0)   1945   2439   3125
sample 0 - 1520606139.792961 - (slot 0)   1961   2451   3423
sample 0 - 1520606139.804150 - (slot 0)   1969   2459   3616

Could you suggest a solution?

Regards,

OOHehir commented 2 years ago

with 'debug-enabled'

ts_test_mt 
tslib 1.22 / libts ABI version 0 (0x000A04)
Release-Date: 2020-07-01
 Host OS: Linux, trying to open /dev/input/touchscreen0
Loading module input
Loading module pthres (pmin=1)
Loading module dejitter (delta=100)
Loading module linear
LINEAR: Reading rotation 0 from calibfile
Linear calibration constants: 20662 132 -3934343 330 16605 -10816635 65536 
tslib input device: vendor 0x0 product 0x0 version 0x0 on bus 0x19
tslib: We have a pressure value
INPUT-RAW: read type 3  code   0  value 3141  time 1520651784.23152
INPUT-RAW: read type 3  code   1  value 2438  time 1520651784.23152
INPUT-RAW: read type 3  code  24  value 4437  time 1520651784.23152
INPUT-RAW: read type 1  code 330  value    1  time 1520651784.23152
INPUT-RAW: read type 0  code   0  value    0  time 1520651784.23152
PTHRES:   read 1 samples (mem: 1 nr x 1 slots)
DEJITTER: read 1 samples (mem: 1 nr x 1 slots)
LINEAR:   read 1 samples (mem: 1 nr x 1 slots)
BEFORE CALIB:
          (slot 0) X:3141 Y:2438 P:4437
TS_READ_MT----> slot 0: x = 935, y = 468, pressure = 4437
INPUT-RAW: read type 3  code   0  value 3162  time 1520651784.39173
INPUT-RAW: read type 3  code   1  value 2502  time 1520651784.39173
INPUT-RAW: read type 3  code  24  value 4797  time 1520651784.39173
INPUT-RAW: read type 0  code   0  value    0  time 1520651784.39173
PTHRES:   read 1 samples (mem: 1 nr x 1 slots)
DEJITTER: read 1 samples (mem: 1 nr x 1 slots)
DEJITTER----------------> 3154 2478 4662
LINEAR:   read 1 samples (mem: 1 nr x 1 slots)
BEFORE CALIB:
          (slot 0) X:3154 Y:2478 P:4662
TS_READ_MT----> slot 0: x = 939, y = 478, pressure = 4662
INPUT-RAW: read type 3  code   0  value 3010  time 1520651784.55172
INPUT-RAW: read type 3  code   1  value 2489  time 1520651784.55172
INPUT-RAW: read type 3  code  24  value 6868  time 1520651784.55172
INPUT-RAW: read type 0  code   0  value    0  time 1520651784.55172
PTHRES:   read 1 samples (mem: 1 nr x 1 slots)
DEJITTER: read 1 samples (mem: 1 nr x 1 slots)
DEJITTER: pen movement exceeds threshold
LINEAR:   read 1 samples (mem: 1 nr x 1 slots)
BEFORE CALIB:
          (slot 0) X:3010 Y:2489 P:6868
TS_READ_MT----> slot 0: x = 893, y = 480, pressure = 6868
INPUT-RAW: read type 1  code 330  value    0  time 1520651784.56447
INPUT-RAW: read type 0  code   0  value    0  time 1520651784.56447
PTHRES:   read 1 samples (mem: 1 nr x 1 slots)
DEJITTER: read 1 samples (mem: 1 nr x 1 slots)
DEJITTER----------------> 3010 2489 6868
LINEAR:   read 1 samples (mem: 1 nr x 1 slots)
BEFORE CALIB:
          (slot 0) X:3010 Y:2489 P:6868
TS_READ_MT----> slot 0: x = 893, y = 480, pressure = 6868