Setting Frequency on Digital Output

[twhite84]

How do I set the frequency on a GPIO output channel? I tried setting GPIO1 to Freq1 in the drop down and setting it to output, but there doesn't seem to be a switch for setting it's output frequency in a value through the scripting window. Basically I'm trying to change the frequency of the output based on an if statement. Below is a sample of what I'm trying to do.

setTickRate(10)

function onTick()
local rpm = getTimerRpm(0)
local speed = getGpsSpeed()

if rpm == 0 then
setFreq(0,10)
setAnalogOut(0,5)
else
setFreq(0,150)
setAnalogOut(0,0)
end

end

[stieg]

Hi twhite84,

The GPIO ports are not designed for PWM style signal output. Rather you would want to use one of the four pulse/analog output channels for this task. You can find a diagram of the RCP pin outs by looking at the RCP pin-out diagram (1st link below). Then using the methods described in the LUA PWM / Analog Output functions (2nd link below) you will be able to control the frequency of those pins. Hope that helps.

RCP pin out diagram: https://www.autosportlabs.net/File:Race ... _sheet.jpg
PWM / Analog Output functions: https://www.autosportlabs.net/RaceCaptu ... _functions