esp8266控制步进电机.txt

gpio.mode(8,gpio.OUTPUT)
gpio.write(8,gpio.HIGH)
gpio.mode(7,gpio.OUTPUT)
gpio.write(7,gpio.LOW)
a = 5000                 --脉冲数
b = 10                    --时间间隔，决定频率

z=400
y=z
--c=(y-b)/480
c=1
for x=1,a do 
   gpio.write(8,gpio.LOW)
   tmr.delay(y) 
   gpio.write(8,gpio.HIGH)
   tmr.delay(y)

   if b>=z then
      y=b
   else 
 
      if a-x<z-b then
         y=y+c
      else
           y=y-c
           if y<=b then
 
            y=b
         end
      end