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Add ./configure shell command to enable ISOTP support in wolfSSL for can-bus example

pull/380/head
tim-weller-wolfssl 2023-04-04 10:10:02 -05:00
parent 539a28244c
commit c628d837c2
1 changed files with 21 additions and 7 deletions
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can-bus/README.md
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@ -6,16 +6,30 @@ This example implements a simple echo client and server that uses TLS over a CAN
You need to have wolfSSL installed on your computer prior to building, this will need to be built with `WOLFSSL_ISOTP` defined to provide ISO-TP functionality. You need to have wolfSSL installed on your computer prior to building, this will need to be built with `WOLFSSL_ISOTP` defined to provide ISO-TP functionality.
To generate the required SSL certificates use `./generate_ssl.sh`. In the `wolfssl` directory:
```sh
$ ./autogen.sh (this step might not be required if the configure script already exists)
$ ./configure CFLAGS="-DWOLFSSL_ISOTP"
$ make all
$ sudo make install
```
Then in the `wolfssl-examples/can-bus` directory:
```sh
$ ./generate_ssl.sh
$ make
```
The `client` and 'server` applications will be available in the `wolfssl-examples/can-bus' directory, as well as the required SSL certificates.
## Setting Up ## Setting Up
If you do not have a physical CAN bus between too machines you can use the virtual CAN bus which is a Linux kernel module. This behaves just like a real CAN bus with a similar bandwidth. To enable this run the following commands: If you do not have a physical CAN bus between too machines you can use the virtual CAN bus which is a Linux kernel module. This behaves just like a real CAN bus with a similar bandwidth. To enable this run the following commands:
```sh ```sh
sudo modprobe vcan $ sudo modprobe vcan
sudo ip link add dev vcan0 type vcan $ sudo ip link add dev vcan0 type vcan
sudo ip link set vcan0 up $ sudo ip link set vcan0 up
``` ```
## Running ## Running
@ -23,13 +37,13 @@ sudo ip link set vcan0 up
On one console run the server, this should be executed first or the handshake will fail. This is executed using: On one console run the server, this should be executed first or the handshake will fail. This is executed using:
```sh ```sh
server vcan0 $ server vcan0
``` ```
Then in another terminal run the client: Then in another terminal run the client:
```sh ```sh
server vcan0 $ client vcan0
``` ```
On both ends you will see: On both ends you will see:
@ -60,6 +74,6 @@ Got message: Hello world! This is a CAN bus test!
If you wish to disable the virtual CAN bus you can turn it off by doing: If you wish to disable the virtual CAN bus you can turn it off by doing:
```sh ```sh
sudo ip link set vcan0 down $ sudo ip link set vcan0 down
``` ```