<section begin="History" />
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!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
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|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"|X.Y.Z{{oldid|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"12555|Month Year2021/01/14}}|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
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|-|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"|[TBD_link X.Y.Z]|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 Year|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"|TBD|-|! style="border-left:solid 2px #73B2C7; border-right:solid 2px #73B2C7;border-top:solid 2px #73B2C7; border-bottom:solid 2px #73B2C7; background-color:#edf8fbededed; padding:5px; color:#000000"|...2023/08/30|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"|...|! style="border-left:solid 2px #73B2C7; border-right:solid 2px #73B2C7;border-top:solid 2px #73B2C7; border-bottom:solid 2px #73B2C7; background-color:#edf8fbededed; padding:5px; color:#000000"|...UARTs Linux device updated info
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<section end="History" /><section begin="Body" />
==UARTs 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 UARTs interface UART interfaces are available on the Evaluation Kit at the connector ''TBD:Jxxx''connectors J9 and J10.
''Jxx'' is a ''TBD:connector-type'' header connector J9 and J10 are 3 pin terminal blocks 5.0mm pitch respectively for the USART3 and UART8. Can be independently used as RS232 two-wires UART3 port, used for debug purposes (bootloader and operating system serial console)or RS485 based on [[ETRA_SOM/ETRA_Hardware/Part_number_composition | Part Number composition]].
[[File:{{{nomeETRA-som}}-EVBEVK-UARTs-connector.png|thumb|center|500px300px|UARTs connector]]
===Signals ===
The following table describes the interface signals:
==== J9 ====
{| class="wikitable"
! latexfontsize="scriptsize"| Pin#! latexfontsize="scriptsize"| SOM Pin#! latexfontsize="scriptsize"| Pin nameRS232! latexfontsize="scriptsize"| Pin functionRS485! latexfontsize="scriptsize"| Pin Notes|-|1| J18.89| USART3_TX| RS485_A|
|-
|1,2,4,6,,7,8,10| J18.91| USART3_RX| RS485_B| |-| 3
| -
| N.A.Ground| N.C.Ground| Not connected|} ==== J10 ===={| class="wikitable" ! latexfontsize="scriptsize" | Pin#! latexfontsize="scriptsize" | SOM Pin#! latexfontsize="scriptsize" | RS232! latexfontsize="scriptsize" | RS485! latexfontsize="scriptsize" | Pin Notes
|-
| 31| J1J18.189191| RS232_RXUART8_TX| Receive lineRS485_A
|
|-
| 32| J1J18.187193| RS232_TXUART8_RX| Transmit lineRS485_B
|
|-
| 93
| -
| DGNDGround
| Ground
|
=== Device mapping ===
UART3 is mapped to <code>/dev/ttymxc2</code> device in Linux. The peripheral is used as the default serial console, both for the bootloader and the kernel.
=== Device usage ===USART3 is mapped to <code>/dev/ttySTM1</code> device in Linux.
To connect UART8 is mapped 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 (eg: PuTTY); communication parameters are: 115200,N,8,1<code>/dev/ttySTM2</code> device in Linux.
=== Device usage ===
Fix the signal cables to the terminal with a small flat screwdriver.
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[[Category:ETRA]]