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raspberry-pico-balcony-watering
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This commit is contained in:
Manuel Kamper 2023-07-01 05:43:03 +00:00
parent 75144e7bfe
commit 2f7097f9f7
1 changed files with 94 additions and 0 deletions
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OTA.py Normal file
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import machine
import ubinascii
import uos
import urequests
def check_version(host, project, auth=None, timeout=5) -> (bool, str):
current_version = ''
try:
if 'version' in uos.listdir():
with open('version', 'r') as current_version_file:
current_version = current_version_file.readline().strip()
if auth:
response = urequests.get(f'{host}/{project}/version', headers={'Authorization': f'Basic {auth}'}, timeout=timeout)
else:
response = urequests.get(f'{host}/{project}/version', timeout=timeout)
response_status_code = response.status_code
response_text = response.text
response.close()
if response_status_code != 200:
print(f'Remote version file {host}/{project}/version not found')
return False, current_version
remote_version = response_text.strip()
return current_version != remote_version, remote_version
except Exception as ex:
print(f'Something went wrong: {ex}')
return False, current_version
def generate_auth(user=None, passwd=None) -> str | None:
if not user and not passwd:
return None
if (user and not passwd) or (passwd and not user):
raise ValueError('Either only user or pass given. None or both are required.')
auth_bytes = ubinascii.b2a_base64(f'{user}:{passwd}'.encode())
return auth_bytes.decode().strip()
def ota_update(host, project, filenames, use_version_prefix=True, user=None, passwd=None, hard_reset_device=True, soft_reset_device=False, timeout=5) -> None:
all_files_found = True
auth = generate_auth(user, passwd)
prefix_or_path_separator = '_' if use_version_prefix else '/'
try:
version_changed, remote_version = check_version(host, project, auth=auth, timeout=timeout)
if version_changed:
try:
uos.mkdir('tmp')
except:
pass
for filename in filenames:
if auth:
response = urequests.get(f'{host}/{project}/{remote_version}{prefix_or_path_separator}{filename}', headers={'Authorization': f'Basic {auth}'}, timeout=timeout)
else:
response = urequests.get(f'{host}/{project}/{remote_version}{prefix_or_path_separator}{filename}', timeout=timeout)
response_status_code = response.status_code
response_text = response.text
response.close()
if response_status_code != 200:
print(f'Remote source file {host}/{project}/{remote_version}{prefix_or_path_separator}{filename} not found')
all_files_found = False
continue
with open(f'tmp/{filename}', 'w') as source_file:
source_file.write(response_text)
if all_files_found:
for filename in filenames:
with open(f'tmp/{filename}', 'r') as source_file, open(filename, 'w') as target_file:
target_file.write(source_file.read())
uos.remove(f'tmp/{filename}')
try:
uos.rmdir('tmp')
except:
pass
with open('version', 'w') as current_version_file:
current_version_file.write(remote_version)
if soft_reset_device:
print('Soft-resetting device...')
machine.soft_reset()
if hard_reset_device:
print('Hard-resetting device...')
machine.reset()
except Exception as ex:
print(f'Something went wrong: {ex}')
def check_for_ota_update(host, project, user=None, passwd=None, timeout=5, soft_reset_device=False):
auth = generate_auth(user, passwd)
version_changed, remote_version = check_version(host, project, auth=auth, timeout=timeout)
if version_changed:
if soft_reset_device:
print(f'Found new version {remote_version}, soft-resetting device...')
machine.soft_reset()
else:
print(f'Found new version {remote_version}, hard-resetting device...')
machine.reset()