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import skip_if

# TODO(tannewt): Remove this when we add nvm support to 3.x

skip_if.always()

skip_if.board_not_in("metro_m0_express", "feather_m0_express", "circuitplayground_express")

import microcontroller

import random

nvm = microcontroller.nvm

len(nvm)

single = random.randint(0, 255)

nvm[1] = single

assert(nvm[1] == single)

nvm[0] = single

assert(nvm[0] == single)

b = bytearray()

for i in range(10):

b.append(random.randint(0, 255))

microcontroller.nvm[10:20] = b

assert(microcontroller.nvm[10:20] == b)