PIO mode in Rp2040

[carl336]

Hardware： Raspberry Pi Pico
Software Development Environment： Micropython
Purpose： Turn on a backlight（the backlight is producing at present, so now I only have LED driver specification：https://imgur.com/MfJhHsf
）
Hello, I am a beginner, learning Micropython with Raspberry Pico.

First of all, here is the code that I wrote:
https://paste.fastmirror.net/?b668a0eab0c46f36#5JHjF2SYAfsTy49EkffwTVXDrziJhmbH6A3BHS197cvP

Here is the diagram that was tested by a logic analyzer:
https://imgur.com/UvTXN5m

And here is the way how I connected Pico with the logic analyzer:

GP10 SCK　 →Channel 0
GP12 MOSI →Channel 1
GP11 SCS →Channel 2

I'm trying to figure it out now:
0x20,0x40 and 0x2F,0x4F were not sent consecutively, but in two times, and now I want them to be sent consecutively (after sending 0x40, send 0x2F immediately, without creating that delay interval) I don't know how to fix it. How to modify the code?