I'm not at a computer - but.

Something like:

Add a macro Dial(string number)

Then in your loop - if (widgetoressed ==12) Dial(tmpstr)

In Dial (number)
.len = LengthStr$(.number)
if(.len != 7) Message("Invalid number - please enter 7 digits)
else
.msg = "Dialling " + .number
Message(.msg ...

Glad it worked.

As to an error - depends how you want to handle it - for example you could ignore digits after 7 have been entered.

Or - better:

You could alert the user - display an error message (invalid phone number?) - similarly - if the user presses '#' before sufficient digits - display ...

Assuming '#' is widget 12 - you have if widgetpressesd = 12 ... cmd = ATD876 + tmpstr.+ "\r\n" - which I'd guess does dial.

You perhaps want to add a check that tmpstr contains sufficient digits for a valid number (if (widgetpressed == 12) && (Length$(tempstr) == 7))) then dial...

or Length ...

.. which explains why my EB3 experiments (with 2 UARTs) didn't work

Not so much a bug as a 'gotcha'.

On most MCUs (at least AVR and PIC) - using a Rx interrupt on a UART the interrupt is UARTRXn where n is the channel number - 1.

On the esp32 - n is the channel number. This is, of course, much more sensible - but change for other devices might break many things ...

...

After editing the file using idf.py menuconfig - can you just copy the sdkconfig file from the project directory?

Haven't tested - but if you edit for a 'custom' config it would save doing it twice...

It's a powerful beast... A while ago i posted about using a second esp32 as a bridge - but today I see that you can use it via a UART.
It allows single stepping (per line of code for example or s 10 ) breakpoints and a host of other features....

Thanks Martin.

You can also use the 'reason code' to do different behaviours depending on reset reason.

The esp32 / espressif toolset has a lot of useful tricks.
For example - you can set the esp32 to run a gdb stub on a crash and then check it's state / single step via UART.

For example in ...

Hi Ben,

Yes - I got a Waveshare device from China a while back - and very nice, although I've not had much chance to play with it Hopefully they are onto the revised silicon with 400MHz capability now.

Martin

I have an esp32-p4 and for a while I've attempted to get the MIPI DSI display (interface) working with the 10.1in display. Recently I finally cracked it :-)

I used the esp32-s3 fcdx file - I've just noticed that Martin has posted a guide to the fcdx file - so I might attempt a real 'p4' one - but ...