I am porting the touchscreen driver for use on a TI DM3730 based board with Android ICS 4.0.3, which uses a four wire resistive touch panel on top of a WVGA (800x480) LCD.
The board uses the TSC2046 touchscreen driver IC which operates in the same way as the ADS7846, hence we are using the ADS7846 driver files. The problem I am experiencing is when I touch the screen, the touch location is offset from my touch point in the Y axis (shorter axis, as in landscape orientation). I can add an offset to the reported y value, in the ADS7846.c file, just before the call to input_report_abs(input, ABS_Y, y), which solves the offset problem, but I don't think this should be necessary. I have modified the ads7846_probe() function to use the logged xmin, xmax, ymin, ymax values for my particular board and touchpanel combination. These are reported in the calls to input_set_abs_params(...). Why is the y pointer position offset from my actual touch position? I have read in the Android AOSP documentation that .idc file is needed, but where should this be located so it gets included in the built filesystem? -- -- unsubscribe: [email protected] website: http://groups.google.com/group/android-porting --- You received this message because you are subscribed to the Google Groups "android-porting" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
