[En-Nut-Discussion] uart1 how to?

[Cosmin Buhu]

----- Original Message ----- 
From: "Dan Morphis" <dan at milkcarton.com>
To: "Ethernut User Chat (English)" <en-nut-discussion at egnite.de>
Sent: Saturday, November 20, 2004 6:42 AM
Subject: [En-Nut-Discussion] uart1 how to?


> I have an Ethernut 1.3f board and remember reading somewhere that if I 
> wire in a db9 connector, I can use two uarts.  Under the comparison 
> table on the hardware table, it says for the 1.3G that the second serial 
> port can be created/used with an external level shifter and connector.  
> I presume this would apply to the 1.3f?
> 
> Can anyone provide information/schematics for building the external 
> level shifter, and information on where to connect it on the board.
> 
> Thanks,
> Dan


    Hello,

    You can get the hardware manual and schematics from here:
http://www.ethernut.de/en/enut13/index.html
    For 1.3 Rev F you can forward PD2, PD3 (uart1) to the MAX
stuffing R16, R17 (they are on the bottom of the board). RS232 lines
of uart1 are then on pins 7,8 of J3 - serial connector. Check
first schematic sheet:
http://www.ethernut.de/pdf/enut13e-s1.pdf

Regards,
Cosmin