MicroPython Forum (Archive)

thank you Damien.
because of your guidance, I found why I spent 200s .
and my have almost finished my task.
thanks you , thanks dhylands.

THANK YOU , I found that 128 changes spent 200 seconds not "200 microseconds". when pyboard has received all 64 bytes, it will send "0xF0" to PC, and when finish 128 changes will send "0xF1" to PC, I compute time of the interval is more than 200s. so, I think the speed of the USB serial is not the b...

import pyb import stm import select import binascii def program(usb): pyb.Pin(pyb.Pin.cpu.A0, pyb.Pin.OUT_PP) pyb.Pin(pyb.Pin.cpu.A1, pyb.Pin.OUT_PP) pyb.Pin(pyb.Pin.cpu.A2, pyb.Pin.OUT_PP) pyb.Pin(pyb.Pin.cpu.A3, pyb.Pin.OUT_PP) pyb.Pin(pyb.Pin.cpu.A4, pyb.Pin.OUT_PP) pyb.Pin(pyb.Pin.cpu.A5, pyb.P...

thank you for your answer patiently！thank you.

thank you for your help.
I guess I can use A0-A7,A13-A15, total 11pins ,I CAN write 11 bits at once , yeah?

SORRY, I am the beginner. my plan is get a synchronous FIFO interface with 15 pins, pin[0] will be the benchmark. I name it clock. all others pin will follow pin[0]'s rising(or falling) edge to output. all 15 pins have the synchronized cycles. if I write as : pin0.high() ... pin13.high() pin14.high(...