77 lines
2.4 KiB
Markdown
77 lines
2.4 KiB
Markdown
# OTA Tool Example
|
|
|
|
This example demonstrates common operations the OTA tool [otatool.py](../../../../components/app_update/otatool.py) allows the user to perform:
|
|
|
|
- reading, writing and erasing OTA partitions,
|
|
- switching boot partitions, and
|
|
- switching to factory partition.
|
|
|
|
Users taking a look at this example should focus on the contents of the Python script [otatool_example.py](otatool_example.py) or shell script [otatool_example.sh](otatool_example.sh). The scripts contain
|
|
programmatic invocation of the tool's functions via the Python API and command-line interface, respectively. Note
|
|
that on Windows, the shell script example requires a POSIX-compatible environment via MSYS2/Git Bash/WSL etc.
|
|
|
|
The built application in this example outputs the currently running partition, whose output is used to verify if the tool switched OTA
|
|
partitions succesfully. The built application binary is written to all OTA partitions at the start of the example to be able to determine the running
|
|
partition for all switches performed.
|
|
|
|
## How to use example
|
|
|
|
### Build and Flash
|
|
|
|
Before running either of the example scripts, it is necessary to build and flash the firmware using the usual means:
|
|
|
|
Make:
|
|
```bash
|
|
make build flash
|
|
```
|
|
|
|
CMake:
|
|
```bash
|
|
idf.py build flash
|
|
```
|
|
|
|
### Running [otatool_example.py](otatool_example.py)
|
|
|
|
The example can be executed by running the script [otatool_example.py](otatool_example.py) or [otatool_example.sh](otatool_example.sh).
|
|
|
|
Python script:
|
|
```bash
|
|
python otatool_example.py
|
|
```
|
|
|
|
Shell script:
|
|
```
|
|
./otatool_example.sh
|
|
```
|
|
|
|
The script searches for valid target devices connected to the host and performs the operations on the first one it finds. This could present problems if there
|
|
are multiple viable target devices attached to the host. To perform the operations on a specific device, specify the port it is attached to during script invocation ("/dev/ttyUSB2" for example):
|
|
|
|
Python script:
|
|
```bash
|
|
python otatool_example.py --port /dev/ttyUSB2
|
|
```
|
|
|
|
|
|
Shell script:
|
|
```
|
|
./otatool_example.sh /dev/ttyUSB2
|
|
```
|
|
|
|
## Example output
|
|
|
|
Running the script produces the following output:
|
|
|
|
```
|
|
Writing factory firmware to ota_0
|
|
Writing factory firmware to ota_1
|
|
Switching to factory app
|
|
Switching to OTA slot 0
|
|
Switching to OTA slot 1 (twice in a row)
|
|
Switching to OTA slot 0 (twice in a row)
|
|
Switching to factory app
|
|
Switching to OTA slot 1
|
|
|
|
Partition tool operations performed successfully
|
|
|
|
```
|