from machine import Pin, Timer, DAC   
from math import *

dac = DAC(Pin(25))

Conversion_factor = (2*pi)/100
SawValues = []
x = 0
for angle in range(0,100):
    SawValues.append(int(Conversion_factor))
    Conversion_factor=Conversion_factor+1

def handler_0(tim0):
    global SawValues
    global x
    dac.write(SawValues[x])
    if x < 99:
        x=x+1 
    else:
        x=0
# create a variable that is a timer
tim0 = Timer(0)                   
# initialize and start the timer
tim0.init(period=1, mode=Timer.PERIODIC, callback=handler_0)