Fun with AI and swordfish basic

[be80be]

I have some tube lights with 300 leds for 50 watts but some only need one color red or blue the rest
do a wave of blue red green there 80 of tubes i used the esp 32 and wled for those
now back to making led tubes

 

[tumbleweed]

here's a version of the SendByte() sub that would produce a lot better timing (based on that original AI code)

Sub SendByte(ByVal DataByte As Byte)
    dim i as byte
    
    For I = 0 To 7 ' Loop 8 times for 8 bits
        ' send bits msb to lsb
        If DataByte.bits(7) = 1 Then ' Send a '1' bit
            ' Send 1-bit (T1H: ~0.8us HIGH, T1L: ~0.45us LOW)
            ' T1H: 4 instruction cycles (0.8us)
            ' T1L: 2-3 instruction cycles (0.4-0.6us)
            WS2812BDataPin = 1
            NOP ' 200ns
            NOP ' 400ns
            NOP ' 600ns
            NOP ' 800ns (approx T1H)

            WS2812BDataPin = 0
            NOP ' 200ns
            NOP ' 400ns (approx T1L)
        Else ' Send a '0' bit
            ' Send 0-bit (T0H: ~0.4us HIGH, T0L: ~0.85us LOW)
            ' T0H: 2 instruction cycles (0.4us)
            ' T0L: 4-5 instruction cycles (0.8-1.0us)

            WS2812BDataPin = 1
            NOP ' 200ns
            NOP ' 400ns (approx T0H)

            WS2812BDataPin = 0
            NOP ' 200ns
            NOP ' 400ns
            NOP ' 600ns
            NOP ' 800ns (approx T0L)
            NOP ' 1000ns (Optional, for slightly longer T0L if needed)
        End If
        DataByte = DataByte << 1
    Next
End Sub

Timing is always going to be an issue with these, so something that uses hardware would be a lot better.

 

[Nigel Goodwin]

As I mentioned above, there are examples from MicroChip using the CLC to interface to Neopixels, presumably they could easily be ported to Swordfish?.