Generate a siren sound

[siliconchip]

Hi
Im able to generate a sound on a piezo sounder and by changing PR2 -rollover im able to change the tone but i cant manage to get a 2 tone to work im toggling an output to run the piezo i would upload a picture but unsure how to do it any help please

Cheers bob

[Steve-Matrix]

You can probably change the PR2 value programmatically, but you may need to use C code in an icon. This post in our old forums might be of use:
https://flowcode.co.uk/mmforums/viewtop ... 047#p36047