68 lines
2.6 KiB
Markdown
68 lines
2.6 KiB
Markdown
Digi APIX GPIO Example Application
|
|
==================================
|
|
The example application uses a gpio as input (e.g. a user button) and another
|
|
one as output (e.g. a user led). The application toggles the output GPIO
|
|
whenever an interrupt is generated in the input GPIO.
|
|
|
|
The GPIOs lines used in the sample are mapped as follows in the Digi Boards:
|
|
- **CCIMX6 SBC**:
|
|
- User button: EXP_GPIO_0 (GPIO Connector Pin 6)
|
|
- User led: USER_LED0 (Connected in the board)
|
|
- **CCIMX6Plus SBC**:
|
|
- User button: EXP_GPIO_0 (GPIO Connector Pin 6)
|
|
- User led: USER_LED0 (Connected in the board)
|
|
- **CCIMX6UL SBC Express**:
|
|
- User button: GPIO3_IO3 (Connected in the board)
|
|
- User led: GPIO3_IO11 (Connected in the board)
|
|
- **CCIMX6UL SBC Pro**:
|
|
- User button: MCA_IO1 (GPIO Connector Pin 7)
|
|
- User led: USER_LED1 (Connected in the board)
|
|
|
|
Running the application
|
|
-----------------------
|
|
Once the binary is in the target, launch the application:
|
|
|
|
```
|
|
# ./apix-gpio-example
|
|
Example application using libdigiapix GPIO support
|
|
|
|
Usage: apix-gpio-example <gpio_in> <gpio_out>
|
|
|
|
<gpio_in> Push-button GPIO number or alias
|
|
<gpio_out> LED GPIO number or alias
|
|
|
|
Aliases for GPIO numbers can be configured in the library config file
|
|
```
|
|
|
|
If no arguments are provided, the example will use the default values:
|
|
- For the interfaces, default values are configured in "/etc/libdigiapix.conf"
|
|
- Specific application default values are defined in the main file.
|
|
|
|
Compiling the application
|
|
-------------------------
|
|
This example can be compiled using a Digi Embedded Yocto based toolchain. Make
|
|
sure to source the corresponding toolchain of the platform you are using, e.g:
|
|
|
|
```
|
|
$ . <DEY-toolchain-path>/environment-setup-cortexa7hf-neon-dey-linux-gnueabi
|
|
$ make
|
|
```
|
|
|
|
More information about [Digi Embedded Yocto](https://github.com/digi-embedded/meta-digi).
|
|
|
|
License
|
|
-------
|
|
Copyright 2017, Digi International Inc.
|
|
|
|
Permission to use, copy, modify, and/or distribute this software for any purpose
|
|
with or without fee is hereby granted, provided that the above copyright notice
|
|
and this permission notice appear in all copies.
|
|
|
|
THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
|
|
REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
|
|
FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
|
|
INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
|
|
OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
|
|
TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF
|
|
THIS SOFTWARE.
|