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connecting tx/rx to an rs232>usb converter

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Hypernova:
One reason why SPI use MISO/MOSI (Master IN Slave OUT)  :)

Psi:

--- Quote from: Hypernova on October 07, 2011, 02:50:15 pm ---One reason why SPI use MISO/MOSI (Master IN Slave OUT)  :)

--- End quote ---

yeah,  SPI does it the right way.
It's obvious what it means and how you should connect it.

IanB:

--- Quote from: Psi on October 07, 2011, 11:52:34 pm ---yeah,  SPI does it the right way.
It's obvious what it means and how you should connect it.

--- End quote ---
But look at the top two pictures here: http://www.bb-elec.com/tech_articles/FAQ_rs232_connections_work.asp

You connect all corresponding signal lines, like for like, name for name, label for label. No muss, no fuss. What could be simpler?

Psi:

--- Quote from: IanB on October 08, 2011, 12:03:38 am ---
--- Quote from: Psi on October 07, 2011, 11:52:34 pm ---yeah,  SPI does it the right way.
It's obvious what it means and how you should connect it.

--- End quote ---
But look at the top two pictures here: http://www.bb-elec.com/tech_articles/FAQ_rs232_connections_work.asp

You connect all corresponding signal lines, like for like, name for name, label for label. No muss, no fuss. What could be simpler?

--- End quote ---

It might be simpler for someone just wiring a plug, but at some point somewhere TX has to be connected to RX and the point at which this distinction is made is unlikely to be the same over all devices.

It may change over at the pcb silkscreen level, the wiring level or you might get some weird chip manufacture labeling their actual chip pinouts with TX as RX if the IC is a slave only device.

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