need help understanding " cognew "

TC

I am having troble understanding cognew. using page 190 of the Propeller manual 1.0 as an example. How dose " X " becomes " XAddr "? I am not putting 2 & 2 together

▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
We all make mistakes when we are young………That’s why paste is edible!

Bergamot

The '@' operator gives the address to the variable in hub memory.

In the manual, they're passing the address of 'X' to the 'Square' function, which calls it 'XAddr'. To get the long variable at XAddr, they use 'long[noparse][[/noparse]XAddr]', which they multiply times itself.

TC

Thank you, Now I understand what is going on

▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
We all make mistakes when we are young………That’s why paste is edible!

TC

OK since I got a better idea about how " x" becomes "xaddr". I have no idea what I am missing with this code

PUB Start (backlight, rate)

· cognew ( Flash_BL(backlight, rate),@stack)

PUB Flash_BL

· repeat
··· outa [noparse][[/noparse]backlight] := 1
··· waitcnt(((CLKFREQ * rate)/ 32) + CNT)
··· outa [noparse][[/noparse]backlight] := 0
··· waitcnt(((CLKFREQ * rate)/ 64) + CNT)

"Propeller Tool" keeps cumming up saying that there should be a "," between "Flash_BL" & "(". everywhere I look in the manual for "cognew" there is the same setup that I am using. what am I doing wrong?

thanks

TC

▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
We all make mistakes when we are young………That’s why paste is edible!

Mike Green

The problem is that you have two parameters that you're passing to Flash_BL, but you have not included them in the declaration of Flash_BL. That needs to be: PUB Flash_BL(backlight,rate)

TC

DUH, I am glad you guys are around. I cant believe I did not see that. Thank you

TC

▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
We all make mistakes when we are young………That’s why paste is edible!