AXEL ULite SOM/AXEL ULite Evaluation Kit/Interfaces and Connectors/Touchscreen
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Contents
Touchscreen interfaceEdit
DescriptionEdit
The Touchscreen interface is available on the AXEL ULite Evaluation Kit at the optional J5 connector.
J5 is a Molex 53398-0671 6 pin connector for connecting a I2C touchscreen controller device.
SignalsEdit
The following table describes the interface signals:
| Pin# | SOM Pin# | Pin name | Function | Notes |
|---|---|---|---|---|
| J5.1 | - | 5V or 3V3 depending on internal connection | - | |
| J5.2 | J1.44 | SDA | I2C SDA | - |
| J5.3 | J1.42 | SCL | I2C SCL | - |
| J5.4 | J1.89 | INT | Interrupt | - |
| J5.5 | J1.128 | RES | Reset | - |
| J5.6 | - | DGND | Ground | - |
Device mappingEdit
The device is typically mapped to /dev/touchscreen0 device in Linux.
Device usageEdit
The touch controller is attached to the generic Linux input event interface (evdev).