Documenting test of HelloPerso sample app.
This commit is contained in:
parent
df4567d015
commit
c315274d61
1 changed files with 61 additions and 0 deletions
61
Testing/HelloPerso_Test/helloperso-notes.md
Normal file
61
Testing/HelloPerso_Test/helloperso-notes.md
Normal file
|
@ -0,0 +1,61 @@
|
|||
# Notes on Hello Perso sample app.
|
||||
|
||||
Hello Perso is a sample app from the LedgerHQ repository
|
||||
[blue-sample-apps](https://github.com/LedgerHQ/blue-sample-apps). It's
|
||||
stated purpose is to be a "a simple application showing the UI and master
|
||||
seed derivation."
|
||||
|
||||
# Compiling:
|
||||
|
||||
Compiles fine inside Docker image, as in the process described in the
|
||||
[Getting Started](http://ledger.readthedocs.io/en/latest/nanos/setup.html)
|
||||
tutorial (which takes you through the Hello World tutorial).
|
||||
|
||||
In extracting the hex-encoded compiled app from the docker container to my
|
||||
local machine, I changed the app name as follows:
|
||||
|
||||
``` bash
|
||||
sudo docker cp [container_id]:/home/blue-sample-apps/blue-app-helloperso/bin/app.hex perso-app.hex
|
||||
```
|
||||
|
||||
I then loaded the app onto the Nano S using the following, and then
|
||||
discovered a problem:
|
||||
|
||||
``` bash
|
||||
python -m ledgerblue.loadApp --targetId 0x31100002 --apdu --fileName perso-app.hex --appName HelloPerso --appFlags 0x00 --icon ""
|
||||
```
|
||||
|
||||
The problem: Hello Perso app requires the `APPLICATION_FLAG_GLOBAL_PIN`
|
||||
permission flag. I had just copied and pasted my loadApp command line for
|
||||
HelloWorld and changed the app name and image name. But the `--appFlags`
|
||||
argument needed to be changed to `--appFlags 0x40`.
|
||||
|
||||
Symptoms: With the wrong permissions set, even though the app was
|
||||
successfuly loaded onto the device, it would freeze the Nano every
|
||||
time I started the app, requiring a power-cycle to get back to the
|
||||
dashboard.
|
||||
|
||||
The correct load command was:
|
||||
|
||||
``` bash
|
||||
python -m ledgerblue.loadApp --targetId 0x31100002 --apdu --fileName perso-app.hex --appName HelloPerso --appFlags 0x40 --icon ""
|
||||
```
|
||||
|
||||
### How to remove apps:
|
||||
|
||||
Problem Two: Repeating the loadApp() command with the correct flags failed
|
||||
because the app already existed on the device. It apparently won't
|
||||
overwrite. Thus I had to find a delete command, which fortunately is
|
||||
referenced in the Makefile. To manually delete the app, this is the
|
||||
command:
|
||||
|
||||
``` bash
|
||||
python -m ledgerblue.deleteApp --targetId 0x31100002 --appName HelloPerso
|
||||
```
|
||||
|
||||
### Permission flags defined:
|
||||
|
||||
The `0x40` permission flag that was needed is defined by macro constant
|
||||
`APPLICATION_FLAG_GLOBAL_PIN` in
|
||||
[nanos-secure-sdk/include/os.h](https://github.com/LedgerHQ/nanos-secure-sdk/blob/master/include/os.h),
|
||||
along with many other application flags.
|
Loading…
Reference in a new issue