<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:#edf8fb; padding:5px; color:#000000"|Month Year
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<section end="History" /><section begin="Body" /> ==Watchdog 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''==Watchdog peripheral ==
=== Description ===
The Watchdog interface peripheral available on the Evaluation Kit at is provided by the connector ''TBD:Jxxx''Maxim MAX6373.
''Jxx'' is a ''TBDThe MAX6373 device has 3 configuration pins that allow to select the following:connector-type'' header connector for * the startup delay from 3ms to 60s or first edge of the WDI signal* the RS232 two-wires UART3 port, used for debug purposes watchdog time (bootloader and operating system serial consolemaximum time between WDI toggles)from 3ms to 10s or disable. As default the device is configured for start the operations on first edge of the WDI signal with a timeout of 10s. For custom configurations please send an e-mail to [[Filemailto:{{{nome-som}}-EVB-Watchdog-connectorhelpdesk@dave.eu helpdesk@dave.png|thumb|center|500px|Watchdog connector]eu]
===Signals ===
{| class="wikitable"
! latexfontsize="scriptsize"| Pin#! latexfontsize="scriptsize"| SOM Pin#! latexfontsize="scriptsize"| Pin name! latexfontsize="scriptsize"| Pin function! latexfontsize="scriptsize"| Pin Notes
|-
|U6.1,2,4,6,,7,8,10| -| N.A.| N.C.| Not connected|-| 3| J1J18.18928| RS232_RXWDI| Receive lineWatchdog input
|
|-
| 3U6.7| J1J18.187| RS232_TX| Transmit line| |-| 9| -24| DGNDWDO| GroundWatchdog output| system reset pin
|}
=== 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 ===
To connect to use the debug serial port: # connect watchdog device toggle 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,8,1WDI pin at least once every 5 seconds.
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[[Category:ETRA]]