About CC-WMX53-LX serial ports

Embedded Devices
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1

Hi good morning, I’ve different questions before buying the jumpstart kit.

  1. I need to know if digi provide some documentation for learning how to use WiFi target, because this is under linux and digi has its own drivers. Some website do you recommend?

  2. The TTL serial port manage UART protocol?

  3. Can I use the three serial ports, LCD touch, WiFi communication at the same time??

  4. About the two RS232 serial ports, is it easy to connect some wires before the driver analogue to MAX232, this is because I need to work with UART 3V3.

2

>1. I need to know if digi provide some documentation for learning how to use WiFi target
digi Embedded Linux online help has extensive documentations on the topic, both for general linux wifi configuration and RedPine specific commands

>3. Can I use the three serial ports, LCD touch, WiFi communication at the same time??

Please look at the developement board schematics to make sure there are no shared / multiplexed pins. how many serials ports do you need. In any case without looking my best gues is “yes, this would be no problem”

>4. About the two RS232 serial ports, is it easy to connect some wires before the driver analogue to MAX232, this is because I need to work with UART 3V3.

yes , should be easy - headers are available for all pins.

3

Thanks for your answer LeonidM.

About the question 3, I need the three serial ports.

According to question 2, the TTL serial port, manage the standard UART protocol, isn’t it?

4

>About the question 3, I need the three serial ports.

shouldn’t be an issue at all

>According to question 2, the TTL serial port, manage the standard UART protocol, isn’t it?

Yes, just not PC appropriate signal levels, that’s why you need MAX232 to connect it to a PC.

UART1 and UART2 already have this level converter and DB9 connectors on the developepment board. UART3 is brought out to Header X19 (same area on the board) and is indeed TTL.there are of the shelf products that will let you connect it to a PC.
http://www.amazon.com/RS232-converter-board-Female-3-3V/dp/B005D5T292/ref=sr_1_2?ie=UTF8&qid=1409074188&sr=8-2&keywords=uart+ttl+level+converter

and probably more and cheaper ones on ebay
http://www.ebay.com/itm/RS232-to-UART-TTL-MAX3221ECAE-DB9-Male-3V-5-5V-Converter-/301022028855?pt=LH_DefaultDomain_0&hash=item46164fa437

or if you PC has no DB9, you can go directly to USB:
http://www.ebay.com/itm/1pcs-USB-2-0-to-TTL-UART-6PIN-Module-Serial-Converter-CP2102-STC-PRGMR-/141238861134?pt=LH_DefaultDomain_0&hash=item20e27dfd4e

5

Ok, thanks for your help. All my questions were answered. I’m gonna check the schematic. Have a nice day!! : )

6

LeonidM about the UART1 which is used as Console, can I used it in my application for managing an external device? or is it only for console option?

7

you can make console silent and re use this uart for your application though u-boot variable and use console over ssh when you need it

8

I was watching the schematic files and the UART3 (TTL serial port). But I didn’t see a driver to manage it to [0-5 volt], it’s used direct from the J2 header, is it a default characteristic of the microcontroller??

One more time, thanks a lot for your current help.

9

I don’t think it can be 5v, it’s probably 3.3v - it is coming directly from i.mx53 so to make sure check it’s HRM