Hi there Human Fly!
I would create an array of the buttons, then multiply by 1,2,4, or 8 through a loop adding each button state on/off. They will add up to anything from 0-15. Then just send that value in the sysex.
fourButtons = function(--[[ CtrlrModulator --]] mod, --[[ number --]] value, --[[ number --]] source)
a={"P1","P2","P3","P4"} --array of buttons
m={1,2,4,8} -- multiplier
sumOfa=0 --variable to hold multiplied values
for i,v in ipairs(a) do
local val=panel:getModulatorByName(v):getModulatorValue()
sumOfa=sumOfa+val*m[ i ]
--add up the values
end --loop
console(String(sumOfa))
--You then don't even need to do an if // else - just include the sum in the sysex message
cs=myCheckSumFunction(0x12, 0x04, 0x00, 0x0c, sumOfa)
panel:sendMidiMessageNow(CtrlrMidiMessage({0xf0, 0x41, 0x10, 0x16, 0x12, 0x04, 0x00, 0x0c, sumOfa , cs , 0xf7}))
end --function
---------------------------------------------------------
myCheckSumFunction=function(...)
local total=0
local result=0
for i,v in ipairs(arg) do
total=total+v --addup all the numbers
if(total > 127) then
total=total - 128
end
end
result=128-total
if result== 128 then result = 0 end -- If the result is 128 then substitute a value of 0
return result
end --function
---------------------------------------------------------NOTE: the attached panel has a small error “return result,10” in myCheckSumFunction() (but still works – should be just “return result”