iMX6 Rex Display Set
This section shows informations about iMX6 Rex Display Set which contain of iMX6 Development kit equipped with Android 4.4.2 by default and LVDS display with a touchscreen layer.
Hardware connection
To enable smooth communication between the board and the display, iMX6 Rex Adapter was designed to connect the set together. To implement the display capabilities, following connections need to be made:
- connection between LVDS Display and LVDS Adapter J1 (using a flexible flat cable)
- LVDS Interface and power connection between iMX6 Rex Development kit J41 and LVDS Adapter J2 (using LVDS and Touchscreen cable)
- touchscreen connection between iMX6 Rex Development kit J41 and LVDS Adapter J3 (using LVDS and Touchscreen cable)
Software instructions
iMX6 Rex Display Set with preinstalled Andoid operation system with LVDS and touchscreen capabilities interacting with OS user inferface. Manual configuration is not necessary, but might be useful in individual cases.
LVDS manual booting
In case LVDS needs to be used and set up manually, U-Boot parameter should be changed:
Rex U-Boot > setenv video 'video=mxcfb0:dev=ldb,edt570,if=RGB666 video=mxcfb1:off' Rex U-Boot > boot
Touchscreen test
Make sure TSC2007 chip is detected and bound as input device:
root@imx6-rexultra:~# dmesg | grep -i tsc2007 input: TSC2007 Touchscreen as /devices/soc0/soc.0/2100000.aips-bus/21a4000.i2c/i2c-1/1-0048/input/input0 evbug: Connected device: input0 (TSC2007 Touchscreen at 1-0048/input0)
Touchscreen events are generated after pressing the resistive layer:
root@imx6-rexultra:~# evtest /dev/input/by-path/platform-21a4000.i2c-event Input driver version is 1.0.1 Input device ID: bus 0x18 vendor 0x0 product 0x0 version 0x0 Input device name: "TSC2007 Touchscreen" Supported events: Event type 0 (EV_SYN) Event type 1 (EV_KEY) Event code 330 (BTN_TOUCH) Event type 3 (EV_ABS) Event code 0 (ABS_X) Value 3529 Min 0 Max 4095 Event code 1 (ABS_Y) Value 375 Min 0 Max 4095 Event code 24 (ABS_PRESSURE) Value 0 Min 0 Max 4095 Properties: Testing ... (interrupt to exit) Event: time 1457899907.959665, type 1 (EV_KEY), code 330 (BTN_TOUCH), value 1 Event: time 1457899907.959665, type 3 (EV_ABS), code 0 (ABS_X), value 1657 Event: time 1457899907.959665, type 3 (EV_ABS), code 1 (ABS_Y), value 2486 Event: time 1457899907.959665, type 3 (EV_ABS), code 24 (ABS_PRESSURE), value 3268 Event: time 1457899907.959665, -------------- EV_SYN ------------ Event: time 1457899907.969094, type 1 (EV_KEY), code 330 (BTN_TOUCH), value 0 Event: time 1457899907.969094, type 3 (EV_ABS), code 24 (ABS_PRESSURE), value 0 Event: time 1457899907.969094, -------------- EV_SYN ------------