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AXEL ULite SOM/AXEL ULite Evaluation Kit/Interfaces and Connectors/Touchscreen

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==Touchscreen interface ==
 
''TBD: sostituire le sezioni con le informazioni sull'uso della periferica e del suo connettore''
''Nell'esempio di seguito c'è la descrizione dell'interfaccia UART/console''
=== Description ===
The Touchscreen interface available on the [[AXEL ULite SOM/AXEL ULite Evaluation Kit | AXEL ULite Evaluation Kit]] at the connector ''TBD:Jxxxoptional''J5 connector.
''Jxx'' J5 is a ''TBD:connectorMolex 53398-type'' header 0671 6 pin connector for the RS232 two-wires UART3 port, used for debug purposes (bootloader and operating system serial console)connecting a I2C touchscreen controller device.
[[File:{{{nome-som}}AXEL_ULite-EVB-Touchscreen-connector.png|thumb|center|500px|Touchscreen connector]]
===Signals ===
The following table describes the interface signals:
 
{| class="wikitable"
! 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!Pin# | -!SOM Pin#| N.A.!Pin name| N.C.!Function| Not connected!Notes
|-
| 3J5.1 || - | J1.189| RS232_RX5V or 3V3 depending on internal connection | Receive line| -
|-
| J5.2 || J1.44 || SDA || I2C SDA || -|-|J5.3|| J1.42 || SCL || I2C SCL || -|-|J5.4 || J1.18789 || INT || Interrupt || -| RS232_TX-| Transmit lineJ5.5 || J1.128 || RES || Reset || -| -|J5.6 || - || DGND || Ground || -
|-
| 9
| -
| DGND
| Ground
|
|}
=== Device mapping ===
UART3 The device is typically mapped to <code>/dev/ttymxc2touchscreen0</code> device in Linux. The peripheral is used as the default serial console, both for the bootloader and the kernel.
=== Device usage ===
To connect The touch controller is attached to the debug serial port: # connect the DB9 adapter bracket to the J22 connector on 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 generic Linux input event interface (eg: PuTTYevdev); communication parameters are: 115200,N,8,1.
----
[[Category:AXEL ULite]]
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