I had NX4827K043_011.
I want to control GPIO,but I used GPIOTest.HMI but I Can't control it.
Thank you for your prompt reply.
your Nextion does EXACTLY what you code ...
effectively page0.b0 changes to page page1
and page1.b1 changes to page page0
back and forth without doing anything
page 0 cfgpio 0,2,0 cfgpio 1,2,0 cfgpio 2,2,0 cfgpio 3,2,0 cfgpio 4,2,0 cfgpio 5,2,0 cfgpio 6,2,0 cfgpio 7,2,0 pio0=0 pio1=0 pio2=0 pio3=0 pio4=0 pio5=0 pio6=0 pio7=0
Line 1 ... hmmm
so gone before anything occurs?