refactor: use v2 CSDK, v2.2 libmraa

Signed-off-by: Iain Anderson <iain@iotechsys.com>

.gitignore

@@ -2,3 +2,5 @@
 prime/
 squashfs-root/
 VERSION
+build/
+deps/

CHANGES

@@ -1,3 +1,7 @@
+Changes for release v2.2.0
+- Device service updated to use C SDK (v2.2.0)
+- Update to mraa library version 2.2.0
+
 Changes for release v1.3.1
 - Device service updated to use C SDK (v1.3.1)
 

README.md

@@ -6,7 +6,7 @@
 The EdgeX Device Grove Service is developed to control/communicate Grove sensors connected on Grove PI in an EdgeX deployment
 
 ## Supported Boards:
-Raspberry PI 3+ - ARM64 bit
+Raspberry PI 3, 4 - ARM64 bit
 
 ## Dependencies:
 
@@ -21,15 +21,26 @@ The repository can be found on git at [libmraa](https://github.com/intel-iot-dev
 2. Build a docker image by using the following command
 ```
 sh> cd device-grove-c
-sh> make version 
-sh> docker build . -t device-grove-c -f ./scripts/Dockerfile.alpine
+sh> make docker
 
 ```
-This command shall build the dependencies - libmraa and device-c-sdk library and create the release version of the docker image by the name 'device-grove-c'. This name can be replaced with your preferred name, if necessary.
+This command shall build the dependencies - libmraa and device-c-sdk library and create the release version of the docker image by the name 'device-grove-c'.
 By default, the configuration and profile file used by the service are available in __'res'__ folder.
 
 ## Configuration for docker image
 1. Port number specified in the configuration.toml
 2. --device=/dev/ < i2c-device > to map host device to the container. For Raspberry PI, it is i2c-1.
 
 **Note:** On Raspberry PI, make sure that i2c_arm=on is set. This enables i2c-1 device, required for communication between Grove PI & Raspberry PI boards.
+
+### Building natively
+
+Before building natively the dependencies for the C SDK need to be installed: these are listed at https://github.com/edgexfoundry/device-sdk-c
+
+The `build_deps.sh` script downloads and builds the required libmraa and the EdgeX device SDK. The `build.sh` script is then used to build the device service.
+
+```
+sh> cd device-grove-c
+sh> ./scripts/build_deps.sh
+sh> ./scripts/build.sh
+```