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uart clarification

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peter-pycom
2021-02-03 15:02:28 +01:00
committed by gijsio
parent cd817b4ac5
commit edab4bd4a4
1 changed files with 16 additions and 6 deletions
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content/updatefirmware/ltemodem.md
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@@ -89,20 +89,30 @@ You can find the firmwares listed [here](https://software.pycom.io/downloads/seq
## USB
If you do not have an SD card available, you can use the existing USB-UART interface. For this you will need to install
If you do not have an SD card available, you can update the firmware over USB. For this you will need to install
* [Python 3](https://www.python.org/downloads)
* [PySerial](https://pythonhosted.org/pyserial/pyserial.html#installation)
* [sqnsupgrade python script](https://github.com/pycom/pycom-libraries/tree/master/lib/sqnsupgrade)
1. Use the following command to allow direct UART communication to the LTE modem:
1. On the Pycom module run the following command to allow direct UART communication to the LTE modem:
```python
import sqnsupgrade
sqnsupgrade.uart(True)
```
2. Take note of the Serial port used and close the IDE.
1. You will see a response similar to this:
```python
<<< Welcome to the SQN3330 firmware updater [1.2.6] >>>
>>> GPy with firmware version 1.20.3.b2
Preparing modem for upgrade...
FFH mode is not necessary... ignoring!
Do not specify updater.elf when updating!
Attempting AT wakeup...
Going into MIRROR mode... please close this terminal to resume the upgrade via UART
```
1. Take note of the Serial port used and close the REPL.
3. Go to the directory where you saved the `sqnsupgrade` script and run the following commands in the command line / terminal
1. On the computer go to the directory where you saved the `sqnsupgrade` script and run the following commands in the command line / terminal
```python
$ python3
>>> import sqnsupgrade
@@ -114,9 +124,9 @@ If you do not have an SD card available, you can use the existing USB-UART inter
```
>Note: Replace the paths and `name.dup` with the actual files. There are different versions for `CAT-M1` and `NB-IoT`
4. The update is now running. Note that the update may seem to 'stall' around 7-10% and again at 99%. This is completely normal.
1. The update is now running. Note that the update may seem to 'stall' around 7-10% and again at 99%. This is completely normal.
>Note: **Do not disconnect power to the module during the updating process**
5. The updater will show `SYSTEM VERSION` when it is done, and return control to REPL.
1. The updater will show `SYSTEM VERSION` when it is done, and return control to REPL.
## Wireless