micropython/tests/esp32/partition_ota.py

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# Test ESP32 OTA updates, including automatic roll-back.
# Running this test requires firmware with an OTA Partition, such as the GENERIC_OTA "board".
# This test also requires patience as it copies the boot partition into the other OTA slot.
import machine
from esp32 import Partition
# start by checking that the running partition table has OTA partitions, 'cause if
# it doesn't there's nothing we can test
cur = Partition(Partition.RUNNING)
cur_name = cur.info()[4]
if not cur_name.startswith("ota_"):
print("SKIP")
raise SystemExit
DEBUG = True
def log(*args):
if DEBUG:
print(*args)
# replace boot.py with the test code that will run on each reboot
import os
try:
os.rename("boot.py", "boot-orig.py")
except:
pass
with open("boot.py", "w") as f:
f.write("DEBUG=" + str(DEBUG))
f.write(
"""
import machine
from esp32 import Partition
cur = Partition(Partition.RUNNING)
cur_name = cur.info()[4]
def log(*args):
if DEBUG: print(*args)
from step import STEP, EXPECT
log("Running partition: " + cur_name + " STEP=" + str(STEP) + " EXPECT=" + EXPECT)
if cur_name != EXPECT:
print("\\x04FAILED: step " + str(STEP) + " expected " + EXPECT + " got " + cur_name + "\\x04")
if STEP == 0:
log("Not confirming boot ok and resetting back into first")
nxt = cur.get_next_update()
with open("step.py", "w") as f:
f.write("STEP=1\\nEXPECT=\\"" + nxt.info()[4] + "\\"\\n")
machine.reset()
elif STEP == 1:
log("Booting into second partition again")
nxt = cur.get_next_update()
nxt.set_boot()
with open("step.py", "w") as f:
f.write("STEP=2\\nEXPECT=\\"" + nxt.info()[4] + "\\"\\n")
machine.reset()
elif STEP == 2:
log("Confirming boot ok and rebooting into same partition")
Partition.mark_app_valid_cancel_rollback()
with open("step.py", "w") as f:
f.write("STEP=3\\nEXPECT=\\"" + cur_name + "\\"\\n")
machine.reset()
elif STEP == 3:
log("Booting into original partition")
nxt = cur.get_next_update()
nxt.set_boot()
with open("step.py", "w") as f:
f.write("STEP=4\\nEXPECT=\\"" + nxt.info()[4] + "\\"\\n")
machine.reset()
elif STEP == 4:
log("Confirming boot ok and DONE!")
Partition.mark_app_valid_cancel_rollback()
import os
os.remove("step.py")
os.remove("boot.py")
os.rename("boot-orig.py", "boot.py")
print("\\nSUCCESS!\\n\\x04\\x04")
"""
)
def copy_partition(src, dest):
log("Partition copy: {} --> {}".format(src.info(), dest.info()))
sz = src.info()[3]
if dest.info()[3] != sz:
raise ValueError("Sizes don't match: {} vs {}".format(sz, dest.info()[3]))
addr = 0
blk = bytearray(4096)
while addr < sz:
if sz - addr < 4096:
blk = blk[: sz - addr]
if addr & 0xFFFF == 0:
# need to show progress to run-tests.py else it times out
print(" ... 0x{:06x}".format(addr))
src.readblocks(addr >> 12, blk)
dest.writeblocks(addr >> 12, blk)
addr += len(blk)
# get things started by copying the current partition into the next slot and rebooting
print("Copying current to next partition")
nxt = cur.get_next_update()
copy_partition(cur, nxt)
print("Partition copied, booting into it")
nxt.set_boot()
# the step.py file is used to keep track of state across reboots
# EXPECT is the name of the partition we expect to reboot into
with open("step.py", "w") as f:
f.write('STEP=0\nEXPECT="' + nxt.info()[4] + '"\n')
machine.reset()