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Contents
Console interfaceEdit
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
DescriptionEdit
The Console interface available on the Evaluation Kit at the connector J2.
J2 is a 4 pin (4x1x2.54mm) header connector for the two-wires USART1 port, used for debug purposes (bootloader and operating system serial console).
[[File:{Template:Nome-som-EVB-Console-connector.png|thumb|center|500px|Console connector]]
SignalsEdit
The following table describes the interface signals:
| Pin# | SOM Pin# | Pin name | Pin function | Pin Notes |
|---|---|---|---|---|
| 1 | J18.87 | N.A. | Transmit line | |
| 2 | J18.89 | RS232_RX | Receive line | |
| 3 | - | 3V3_CB | Power output | This pin can be used to power an RS232 transceiver |
| 4 | - | DGND | Ground |
Device mappingEdit
UART3 is mapped to /dev/ttymxc2 device in Linux. The peripheral is used as the default serial console, both for the bootloader and the kernel.
Device usageEdit
To connect to the debug serial port:
- connect the UART to USB transceiver to J2 connector
- start your favorite terminal emulator software on PC (eg: PuTTY); communication parameters are: 115200,N,8,1