Have a play - see how you get on...

See https://www.flowcode.co.uk/forums/viewt ... 898#p21898 - where I do this for the MAX7219 7 segment display.

You could maybe 'borrow; the character set?

Martin

It is relatively easy to do using the 'segments' function. Have an array for the characters you need - not all characters are possible but a fair few are so use ASCII mapping (' ' (space) is 32, 'A' 65 etc) - and I would offset the index (use .c - 32 where .c is the character) as 0..31 are not 'prin...

How often do you expect an interrupt? Could you work round by reading port a/c and only processing the code if the pin is low (falling) Some thing like: FCL_PINS = PORTA; // In a C block if (.pins & (1<< int_pin)) == 0 // in FC // Do interrupt code Please post a short snippet of code that demons...

Thanks Ben - that explains the read of the port registers.

I still have the odd layout - with the masks as 0 (until I minimise the select pin(s) diagram)
Martin

Sorry - I'm not sure I follow - "negative edge behaves as if both edges are triggered"? Is this a limitation of the MCU (the same ISR is called for rising, falling and both - although this would usually(always?) be the case) Please can you post a code snippet that demonstrates - this and t...

Also to check that you are not trying to use a switch and just seeing 'bounce'?

I don't have that part to test with - sorry. As a simple 'thought experiment' - can you add code to set the interrupt pins as 'inputs' before the interrupt icon? (set TRISA or use read a pin using input) Set the pins to be 'digital' (set ANSELA) Add a simple ISR that toggles a different pin. Add a s...

Can you post a simple demo showing this? Looking at the datasheet - bits are set in IOCxP and IOCxN for rising and falling edge interrupts - both to detect both. I added an IOC interrupt to a chart and selected some pins (the 'selection' image is too small - and I couldn't find keys to enlarge it) -...

This would probably be best as a new topic - but I'll not try moving it on phone... What are you trying to achieve - what speed are you wanting to change? For app developer or for an MCU? Or do you want multiple 'tasks' to run at set intervals / rates? If you post more details possibly with some sam...

Oh dear - sorry to hear that....

It should be possible to re-instate your keyboard driver - from within Windows (right click 'Windows' -> Device manager....)

Martin