I wrote a simple script as the title, and saved it as main.py import time from machine import Pin led=Pin(2,Pin.OUT) #create LED object from pin2,Set Pin2 to output while True: led.value(1) #Set led t...
For the push-pull topology in the figure below, the battery voltage input is about 40 volts. For example, when the lower tube is turned on and the upper tube is turned off, it works normally. But when...
The written program is downloaded to SDRAM or Nand flash through U-BOOT. The timing of the running lights is different. What's going on? It is much faster when in SDRAM, and much slower when booting f...