Majenko

I have to go now. I'll be around a bit later tomorrow.

Chat is built into gmail now

Hmm, not seeing it

I have no idea whatsoever. Maybe they program them at the factory for you? Or maybe you need special hardware? I don't know.

Time for me to go shortly. I'm away most of tomorrow, but feel free to message me on google's chat system in gmail. It's easier than email for general chatting.

But hard to get at the moment like many components :(

These are the ones I usually use with PIC32MZ chips: uk.farnell.com/abracon/asemb-24-000mhz-lc-t/…

It can, yes. You need to be careful with your trace layout and grounding arrangement to reduce EMI.

uk.farnell.com/c/crystals-oscillators/oscillators/…

A crystal and oscillator circuit all in one tiny package. Puts out a simple square wave. No need to mess with load capacitors, or problems with EMI regulations.

Early versions of the PIC32MZ chips didn't work too well with crystals, so I switched to MEMS clock chips instead. Now I use them all the time and rarely use crystals any more.

I use 24MHz external clock chips for them. You have to be quite careful with your clock selection as only a limited range can work with the USB PLL.

It's getting hard to find things that aren't 32 bit now. It's all "ARM Cortex" everywhere you turn...

It's like I can send a letter to a friend with your address in it because it has his address on the front of the letter.

1110xxx0 is only ever seen by the switch if it immediately follows the start bit.

But you can send S11000110A11101010AP fine

So S1110xxx0A00001000AP

You send the start bit, then 1110xxx0 then wait for an ACK response, then send the port setting, then wait for an ACK response, then send the stop bit.

No

I know someone whose daughter moved to Finland. She had big problems with the language because the muscles in her jaw weren't capable of making the right shapes to speak the words. It's a very strange language.

Danish is closer to Swedish. I can almost converse with them...

Neither do most of the finns ;)

Many things are. Just add a few more A's to the english and you get the dutch. Or maybe the Finnish ;)

Yes, they're nice.

Ah, chicken satay.

Not sure I want to ;)

I was delayed sorting out some sales for dispatch too.

Yum

The value 1110xxx0 is only recognised as a device address if it follows the "start bit". All other 1110xxx0 values are just values and pass through unhindered (unless preceeded by the address of the switch of course).

Only if a device sees the transaction start with its own address will it take any notice of anything else that follows.

Every I2C transaction starts with the device address.

Only as a start value though.

Kind of.

?

yeah. You just write the "control register" for which channel you want connected and it connects it.

It's just a device on the I2C bus. You send it a command and it switches to one of the sets of switched bus pins. It is then transparent for other addresses.

I usually shop for my displays in China. It's cheaper... aliexpress.com/item/32879702750.html

This looks a good one - does the level shifting too. ti.com/lit/ds/symlink/tca9544a.pdf

Simpler would be to use an SPI based screen instead.

ti.com/interface/i2c/switches-and-multiplexers/products.html

You would need an I2C multiplexer.

There isn't.

Two of the same device on the same bus with the same address doesn't work.

You can have lots of devices on one I2C bus, yes, but only if they all have unique addresses.

These ones are I2C, so getting more than 2 (2 I2C buses) is tricky

All off one fubarino?

ok

Cariad has a good few hundred fonts in it, from tiny 5x7 pixels to massive full screen characters.

If you can display graphics you can display text. Text is just graphics in certain shapes :)