<section begin="History" />

!colspan="4" style="width:100%; text-align:left"; border-bottom:solid 2px #ededed"|History

!style="border-left:solid 2px #73B2C7; border-right:solid 2px #73B2C7;border-top:solid 2px #73B2C7; border-bottom:solid 2px #73B2C7; background-color:#73B2C7; padding:5px; color:white"|Version!style="border-left:solid 2px #73B2C7; border-right:solid 2px #73B2C7;border-top:solid 2px #73B2C7; border-bottom:solid 2px #73B2C7; background-color:#73B2C7; padding:5px; color:white"|Issue Date!style="border-left:solid 2px #73B2C7; border-right:solid 2px #73B2C7;border-top:solid 2px #73B2C7; border-bottom:solid 2px #73B2C7; background-color:#73B2C7; padding:5px; color:white"|Notes

|style="border-left:solid 2px #73B2C7; border-right:solid 2px #73B2C7;border-top:solid 2px #73B2C7; border-bottom:solid 2px #73B2C7; background-color:#edf8fb; padding:5px; color:#000000"|X1.Y0.Z0|style="border-left:solid 2px #73B2C7; border-right:solid 2px #73B2C7;border-top:solid 2px #73B2C7; border-bottom:solid 2px #73B2C7; background-color:#edf8fb; padding:5px; color:#000000"|Month YearDec 2020|style="border-left:solid 2px #73B2C7; border-right:solid 2px #73B2C7;border-top:solid 2px #73B2C7; border-bottom:solid 2px #73B2C7; background-color:#edf8fb; padding:5px; color:#000000"|TBDFirst Release

<section end="History" /><section begin="Body" />

The Touchscreen interface available on the Evaluation Kit at the connector ''TBD:JxxxJ20'' is a 6 pin ''Molex PicoBlade''connector for the I2C and control signals needed by most of the capacitive TSC.

''Jxx'' is a ''TBD:connector-type'' header connector for the RS232 two-wires UART3 port, used for debug purposes This interface can be configured to work with 3.3V (bootloader default) or 5V power and operating system serial console)signal levels.

! latexfontsize="scriptsize"| Pin#! latexfontsize="scriptsize"| SOM Pin#! latexfontsize="scriptsize"| Pin name! latexfontsize="scriptsize"| Pin function! latexfontsize="scriptsize"| Pin Notes

|1,2,4,6,,7,8,10

| N.A.DGND| N.C.Ground| Not connected

| 32| J1J18.18948| RS232_RXTOUCH_SDA| Receive lineI2C_SDA

| J1J18.18738| RS232_TXTOUCH_SCL| Transmit lineI2C_SCL

| 94|J18.101| TOUCH_VDD| TSC power| powered through a control switch| -| DGND5|J18.201|TOUCH_INT|TSC interrupt|input|-|6|J18.199|TOUCH_RES| GroundTSC reset| output

UART3 The device is typically mapped to <code>/dev/ttymxc2touchscreen0</code> device in Linux.  The peripheral touch controller is used as attached to the default serial console, both for the bootloader and the kernelgeneric Linux input event interface (evdev).

The simplest tools for touch screen management are the tslib library and ts_tools utilities. To connect to calibrate the debug serial port: # connect touch screen, the DB9 adapter bracket to <code>ts_calibrate</code> command line tool is available. After calibration, the J22 connector on touch screen can be tested using the SBCX board# connect a serial cable between DB9 connector and PC COM port through a NULL-modem cable (not provided)# start your favorite terminal emulator software on PC (eg: PuTTY); communication parameters are: 115200,N,8,1graphical <code>ts_test</code> utility or the <code>ts_print</code> command line tool.