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improved LTE attaching guide

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gijsio
2020-07-24 10:33:47 +02:00
parent 20f4ece969
commit fbc5957874
1 changed files with 170 additions and 5 deletions
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175
content/tutorials/networks/lte/_index.md
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@@ -13,18 +13,183 @@ Both networks make can make use of the same example:
```python
from network import LTE
import machine
import time
import socket
lte = LTE()
lte.attach(band=20, apn="your apn")
while not lte.isattached()"
machine.idle()
while not lte.isattached()
time.delay(0.25)
print('.', end='')
print(lte.send_at_cmd('AT!="fsm"') # get the System FSM
print("LTE modem attached!")
lte.connect()
while not lte.isconnected():
time.sleep(0.25)
print('#')
#print(lte.send_at_cmd('AT!="showphy"'))
print(lte.send_at_cmd('AT!="fsm"'))
print("LTE modem connected!")
print(socket.getaddrinfo('pycom.io', 80))
lte.disconnect()
lte.detach()
#now we can do
#machine.deepsleep()
```
>Note: the first time, it can take a long while to attach to the network.
If you want to check the status of the modem while attaching, you can use the following commands:
```python
print(lte.send_at_cmd('AT!="showphy"') # get the PHY status
print(lte.send_at_cmd('AT!="fsm"') # get the System FSM
```
```
# LTE Troubleshooting guide
Reviewing the responses from `print(lte.send_at_cmd('AT!="fsm"')) from the script above:
* Before calling `lte.attach()` :
```
SYSTEM FSM
==========
+--------------------------+--------------------+
| FSM | STATE |
+--------------------------+--------------------+
| RRC TOP FSM |STOPPED |
| RRC SEARCH FSM |NULL |
| RRC ACTIVE FSM |NULL |
| PMM PLMN FSM |NULL |
| EMM MAIN FSM |NULL |
| EMM AUTH FSM |NULL |
| EMM CONN FSM |NULL |
| EMM TAU FSM |NULL |
| EMM TEST FSM |NULL |
| ESM BEARER FSM |BEARER_NULL |
| SMS MT FSM |IDLE |
| SMS MO FSM |IDLE |
| HP MAIN FSM |IDLE |
| HP USIM FSM |READY |
| HP SMS MO FSM |IDLE |
| HP SMS MT FSM |IDLE |
| HP CAT FSM |IDLE |
+--------------------------+--------------------+
```
* With no SIM card detected:
```
SYSTEM FSM
==========
+--------------------------+--------------------+
| FSM | STATE |
+--------------------------+--------------------+
| RRC TOP FSM |CAMPED |
| RRC SEARCH FSM |CAMPED_ANY |
| RRC ACTIVE FSM |IDLE |
| PMM PLMN FSM |ANY_CAMPED |
| EMM MAIN FSM |NULL |
| EMM AUTH FSM |NULL |
| EMM CONN FSM |NULL |
| EMM TAU FSM |NULL |
| EMM TEST FSM |NULL |
| ESM BEARER FSM |BEARER_NULL |
| SMS MT FSM |IDLE |
| SMS MO FSM |IDLE |
| HP MAIN FSM |IDLE |
| HP USIM FSM |ABSENT |
| HP SMS MO FSM |IDLE |
| HP SMS MT FSM |IDLE |
| HP CAT FSM |NULL |
+--------------------------+--------------------+
```
* SIM card inserted and attaching:
* Scanning `RRC SEARCH FSM` goes from `WAIT_RSSI` to `WAIT_CELL_ID`
* Scanning `RRC TOP FSM` goes from `SCANNING` to `SYNCING`
* If it is stuck at `WAIT_RSSI`, check the antenna connection
* If the system returns from `SYNCING` to `CAMPED`, check the network availability, simcard placement and / or the firmware version.
>Note: Use the following to check the version number:
>```python
>import sqnsupgrade
>print(sqnsupgrade.info()
>```
Versions LR5.xx are for CAT-M1
Versions LR6.xx are for NB-IoT
```
SYSTEM FSM
==========
+--------------------------+--------------------+
| FSM | STATE |
+--------------------------+--------------------+
| RRC TOP FSM |SCANNING |
| RRC SEARCH FSM |WAIT_RSSI |
| RRC ACTIVE FSM |NULL |
| PMM PLMN FSM |NORM_WAITCELL |
| EMM MAIN FSM |NULL |
| EMM AUTH FSM |NULL |
| EMM CONN FSM |NULL |
| EMM TAU FSM |NULL |
| EMM TEST FSM |NULL |
| ESM BEARER FSM |BEARER_NULL |
| SMS MT FSM |IDLE |
| SMS MO FSM |IDLE |
| HP MAIN FSM |IDLE |
| HP USIM FSM |READY |
| HP SMS MO FSM |IDLE |
| HP SMS MT FSM |IDLE |
| HP CAT FSM |IDLE |
+--------------------------+--------------------+
```
* Connecting
```
SYSTEM FSM
==========
+--------------------------+--------------------+
| FSM | STATE |
+--------------------------+--------------------+
| RRC TOP FSM |CONNECTING |
| RRC SEARCH FSM |CAMPED |
| RRC ACTIVE FSM |WAIT_SMC |
| PMM PLMN FSM |NORM_CAMPED |
| EMM MAIN FSM |REGISTERED_INIT |
| EMM AUTH FSM |WAITING_SIM_CONFIRM |
| EMM CONN FSM |AS_ESTABLISHED |
| EMM TAU FSM |NULL |
| EMM TEST FSM |NULL |
| ESM BEARER FSM |BEARER_NULL_PENDING_ACTIVE|
| SMS MT FSM |IDLE |
| SMS MO FSM |IDLE |
| HP MAIN FSM |IDLE |
| HP USIM FSM |READY |
| HP SMS MO FSM |IDLE |
| HP SMS MT FSM |IDLE |
| HP CAT FSM |IDLE |
+--------------------------+--------------------+
```
* Connected
```
SYSTEM FSM
==========
+--------------------------+--------------------+
| FSM | STATE |
+--------------------------+--------------------+
| RRC TOP FSM |CONNECTED |
| RRC SEARCH FSM |CAMPED |
| RRC ACTIVE FSM |CONNECTED |
| PMM PLMN FSM |NORM_CAMPED |
| EMM MAIN FSM |REGISTERED |
| EMM AUTH FSM |KASME_DEFINED |
| EMM CONN FSM |AS_ESTABLISHED |
| EMM TAU FSM |NULL |
| EMM TEST FSM |NULL |
| ESM BEARER FSM |BEARER_ACTIVE |
| SMS MT FSM |IDLE |
| SMS MO FSM |IDLE |
| HP MAIN FSM |IDLE |
| HP USIM FSM |READY |
| HP SMS MO FSM |IDLE |
| HP SMS MT FSM |IDLE |
| HP CAT FSM |IDLE |
+--------------------------+--------------------+
```
* Potential other errors:
* `OSSError: [Errno 202] EAI_FAIL`: Check the data plan / sim activation status on network