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So, that's 6 instructions at 62.5ns each for a total of 375ns. Put that in a loop and it'll be about 400ns.
The send byte routine I posted in #22 will be faster than #31
For an 18FxxQ10 what I posted should get you 64Mhz using the int osc.
With that device the PLL is only for external clocks, so you can ignore whatever AI is telling you.
How are you measuring the frequency?
According to the device support doc for MPLABX v5.45 , the PK3 is supported as both a debugger and programmer for the dsPIC30F2010.
Of course, that doesn't mean there aren't issues, especially since we're talking MPLABX here.
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...
Here's post #1 modified for Swordfish. It compiles... whether it works or not you'll have to ask AI.
I wouldn't do it this way, but that wasn't the question...
'-------------------------------------------------------------------------------
' WS2812B Basic Control Example for Swordfish
'...
Lots of stuff in there just flat out isn't Swordfish BASIC syntax.
That shouldn't be a real surprise since using AI for embedded programming is a waste of time
If you connect the 595 CLOCK to the K22 RC3 (SCK1) and the first 595 DS SER data in to the K22 RC5 (SDO1) that would allow you the option of using the hardware SPI module (MSSP1) and SPI.BAS to shift out the serial data instead of bit-banging it using SHIFT.BAS. This assumes you daisy-chain the...
If I was doing it I'd connect up the 595s in a daisy chain similar to post 1 with one clk and data pin using the SPI mssp peripheral instead of bit banging using SHIFT.
Rig up a timer and clock out all 80 bits at once... probably take <20usec without much wrangling.
If you think that then you haven't tried to write the code yet to do this.
As far as 2 seconds for each shift reg, that's only if you add all sorts of delays where they shouldn't be
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