Author Topic: Need USB-to-UART adapter with DTR and RTS headers  (Read 1164 times)

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Offline PeabodyTopic starter

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Need USB-to-UART adapter with DTR and RTS headers
« on: March 01, 2019, 03:27:57 pm »
This would be for BSL flashing of TI MSP430 processors.  I need Tx, Rx, DTR, RTS, Ground, and 3.3V.  The lines need to be 3.3V.

I've searched Ebay, but can't find anything.  The closest I found was this, which could be made to work, but only after some modification:

https://www.ebay.com/itm/182603235304

The standard FTDI cable/adapter has CTS, which is not what's needed.

Does anyone know of such an adapter, or a cable?
 

Offline rstofer

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Re: Need USB-to-UART adapter with DTR and RTS headers
« Reply #1 on: March 01, 2019, 04:18:58 pm »
https://www.sparkfun.com/products/13263

There is a jumper to select 5V versus 3.3V - see the schematic under the Documents tab
There will be a small glitch with DTR.  It is used to reset boards like the Arduino and, therefore, it has a FET and a couple of resistors.  These could be removed to get a clean DTR.  Again, see the schematic.
 

Offline perieanuo

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Re: Need USB-to-UART adapter with DTR and RTS headers
« Reply #2 on: March 01, 2019, 05:19:07 pm »
Buy one with headers for all ftdi pins available and a level converter, you'll have it all for any requirement


Envoyé de mon iPad en utilisant Tapatalk
 

Offline tsman

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Re: Need USB-to-UART adapter with DTR and RTS headers
« Reply #3 on: March 01, 2019, 05:51:06 pm »
If you want a fancy isolated dongle then pylo's muArt looks good. If you've got a TI Launchpad lying around then you can use that for BSL. Otherwise do what the others have already mentioned.
 


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