There are quite a lot of MAX7219 drivers around though - I've done ones for the 8 x 8 grids, digits and most recently - 32 x 32 :-) (the last is the simplest and supports simulation too!) The actual data required is simple - output to all of the attached drivers and then latch a line at a time. Martin

Multiplexing - you need to 'turn on' the individual segments for some of the time - rapidly switching between the different digits by connecting the common (anode or cathode)

Have a look at https://www.flowcode.co.uk/forums/viewt ... g&start=10

Martin

Possibly!

I suspect you might be able to do $PORTA0 = 1 in a calculation too?

Though - this is new to me - and I've not tried it...

No - at least not in a FC friendly way...

You could do it in C - but (as far as I know) there is no way in FC to do pin = $PORTA.0 (or similar syntax)

Martin

Yes..

Go into menuconfig -> Security features.

After reading:

https://docs.espressif.com/projects/esp ... ption.html

Martin

I'll put it down to the weather (solar storms maybe) - was surely a new error message for me!

Martin

I started with TinyBootloader as a base. I had to modify it quite a lot for a specific requirement (and PIC assembly language was new to me / isn't nice) - it might be worth having a look and seeing if it fits your needs (Evan will do a MCU specific version for a fee - but source not included - so m...

yes, I see that - however, the principalswill be very similar.

Have a look at

viewtopic.php?t=3494

And

viewtopic.php?t=3613

Which deal with (different) LED driver chips - I'm pretty sure the techniques required will be similar.
If you have difficulties I'll try and help..

Martin

You can use the codeoffset directive...

I did a bootloader for a PIC18 and tried quite hard to get the harmony framework bootloader to work.

I didn't manage it - and in the end put the bootloader at the end of memory and loaded the FC program as is...

You'll hopefully have more success ..

Martin