I am attempting to programmatically access the nRF5340 network core using pynrfjprog on Windows, but am continuously hitting:
`pynrfjprog.APIError.APIError: An error was reported by NRFJPROG DLL: -90 NOT_AVAILABLE_BECAUSE_PROTECTION`
As far as I can tell I have followed the correct procedure for erasing both cores, and the standalone `nrfjprog` tool is able to read memory from the network core with no errors.
Furthermore, my code can access the network core fine under MacOS.
Below is my test program:
```
#!/usr/bin/env python3
from pynrfjprog import HighLevel
from pynrfjprog.Parameters import CoProcessor
import subprocess
def test():
# Completely recover connected nRF53 device
out = subprocess.run(['nrfjprog', '-f', 'nrf53', '--coprocessor', 'CP_NETWORK', '--recover'], capture_output=True)
if out.returncode != 0:
print("Failed to erase network core")
return
out = subprocess.run(['nrfjprog', '-f', 'nrf53', '--coprocessor', 'CP_APPLICATION', '--recover'], capture_output=True)
if out.returncode != 0:
print("Failed to erase application core")
return
# Validate that nrfjprog can read network core memory
out = subprocess.run(['nrfjprog', '-f', 'nrf53', '--coprocessor', 'CP_NETWORK', '--memrd', '0x01FF0000', '--n', '8'], capture_output=True)
if out.returncode != 0:
print("Failed to read network core memory")
return
print(f"nrfjprog output: {out.stdout}")
# Try and programmatically access network core
with HighLevel.API() as api:
probes = api.get_connected_probes()
with HighLevel.DebugProbe(api, probes[0], CoProcessor.CP_NETWORK) as p:
info = p.get_device_info()
print(info.device_type)
if __name__ == '__main__':
test()
```
The above works when accessing `CoProcessor.CP_APPLICATION`, but fails when accessing `CoProcessor.CP_NETWORK` with:
```
nrfjprog output: b'0x01FF0000: 5B800000 0004FFFC |...[....|\r\n'
Traceback (most recent call last):
File "C:\Users\Jordan\code\scripts\test.py", line 33, in <module>
test()
File "C:\Users\Jordan\code\scripts\test.py", line 29, in test
info = p.get_device_info()
File "C:\Python38\lib\site-packages\pynrfjprog\HighLevel.py", line 272, in get_device_info
raise APIError(result, log=self._logger.error)
pynrfjprog.APIError.APIError: An error was reported by NRFJPROG DLL: -90 NOT_AVAILABLE_BECAUSE_PROTECTION.
Traceback (most recent call last):
File "C:\Users\Jordan\code\scripts\test.py", line 33, in <module>
test()
File "C:\Users\Jordan\code\scripts\test.py", line 29, in test
info = p.get_device_info()
File "C:\Python38\lib\site-packages\pynrfjprog\HighLevel.py", line 272, in get_device_info
raise APIError(result, log=self._logger.error)
pynrfjprog.APIError.APIError: An error was reported by NRFJPROG DLL: -90 NOT_AVAILABLE_BECAUSE_PROTECTION.
```
Software versions are:
python: 3.8.0
pynrfjprog: 10.6.0
JLink: 7.50a
