![Telink B91 EVK](http://wiki.telink-semi.cn/wiki/assets/Hardware/B91_Generic_Starter_Kit_Hardware_Guide/connection_chart.png)

## Build and flash

1. Pull docker image from repository:

    ```bash
    $ docker pull connectedhomeip/chip-build-telink:latest
    ```

1. Run docker container:

    ```bash
    $ docker run -it --rm -v ${CHIP_BASE}:/root/chip -v /dev/bus/usb:/dev/bus/usb --device-cgroup-rule "c 189:* rmw" connectedhomeip/chip-build-telink:latest
    ```

    here `${CHIP_BASE}` is directory which contains CHIP repo files **!!!Pay
    attention that OUTPUT_DIR should contains ABSOLUTE path to output dir**

1. Activate the build environment:

    ```bash
    $ source ./scripts/activate.sh
    ```

1. In the example dir run:

    ```bash
    $ west build
    ```

1. Flash binary:

    ```
    $ west flash --erase
    ```

## Usage

### UART

To get output from device, connect UART to following pins:

| Name | Pin                           |
| :--: | :---------------------------- |
|  RX  | PB3 (pin 17 of J34 connector) |
|  TX  | PB2 (pin 16 of J34 connector) |
| GND  | GND                           |

### Buttons

The following buttons are available on **tlsr9518adk80d** board:

| Name     | Function               | Description                                                                                            |
| :------- | :--------------------- | :----------------------------------------------------------------------------------------------------- |
| Button 1 | Factory reset          | Perform factory reset to forget currently commissioned Thread network and back to uncommissioned state |
| Button 2 | NA                     | NA                                                                                                     |
| Button 3 | Thread start           | Commission thread with static credentials and enables the Thread on device                             |
| Button 4 | Open commission window | The button is opening commissioning window to perform commissioning over BLE                           |

### LEDs

**Red** LED indicates current state of Thread network. It ables to be in
following states:

| State                       | Description                                                                  |
| :-------------------------- | :--------------------------------------------------------------------------- |
| Blinks with short pulses    | Device is not commissioned to Thread, Thread is disabled                     |
| Blinls with frequent pulses | Device is commissioned, Thread enabled. Device trying to JOIN thread network |
| Blinks with whde pulses     | Device commissioned and joined to thread network as CHILD                    |

### CHIP tool commands

1. Build
   [chip-tool cli](https://github.com/project-chip/connectedhomeip/blob/master/examples/chip-tool/README.md)

2. Pair with device

    ```
    ${CHIP_TOOL_DIR}/chip-tool pairing code ${NODE_ID_TO_ASSIGN} MT:D8XA0CQM00KA0648G00
    ```

    here:

    - \${NODE_ID_TO_ASSIGN} is the node id to assign to the ota requestor

### OTA with Linux OTA Provider

OTA feature enabled by default only for ota-requestor-app example. To enable OTA
feature for another Telink example:

-   set CONFIG_CHIP_OTA_REQUESTOR=y in corresponding "prj.conf" configuration
    file.
-   remove "boards/tlsr9518adk80d.overlay" file to enable 2MB flash storage.

After build application with enabled OTA feature, use next binary files:

-   zephyr_final.bin - main binary to flash PCB (Use 2MB PCB).
-   zephyr-ota.bin - binary for OTA Provider
-   zephyr.bin - ignore this file.
-   zephyr.signed.bin - ignore this file.

Usage of OTA:

-   Build the [Linux OTA Provider](https://github.com/project-chip/connectedhomeip/blob/master/examples/ota-provider-app/linux)

    ```
    ./scripts/examples/gn_build_example.sh examples/ota-provider-app/linux out/ota-provider-app chip_config_network_layer_ble=false
    ```

-   Run the Linux OTA Provider with OTA image.

    ```
    ./chip-ota-provider-app -f zephyr-ota.bin
    ```

-   Provision the Linux OTA Provider using chip-tool

    ```
    ./chip-tool pairing onnetwork ${OTA_PROVIDER_NODE_ID} 20202021
    ```

    here:

    -   \${OTA_PROVIDER_NODE_ID} is the node id of Linux OTA Provider

-   Configure the ACL of the ota-provider-app to allow access

    ```
    ./chip-tool accesscontrol write acl '[{"fabricIndex": 1, "privilege": 5, "authMode": 2, "subjects": [112233], "targets": null}, {"fabricIndex": 1, "privilege": 3, "authMode": 2, "subjects": null, "targets": null}]' ${OTA_PROVIDER_NODE_ID} 0
    ```

    here:

    -   \${OTA_PROVIDER_NODE_ID} is the node id of Linux OTA Provider

-   Use the chip-tool to announce the ota-provider-app to start the OTA process

    ```
    ./chip-tool otasoftwareupdaterequestor announce-ota-provider ${OTA_PROVIDER_NODE_ID} 0 0 0 ${DEVICE_NODE_ID} 0
    ```

    here:

    -   \${OTA_PROVIDER_NODE_ID} is the node id of Linux OTA Provider
    -   \${DEVICE_NODE_ID} is the node id of paired device

Once the transfer is complete, OTA requestor sends ApplyUpdateRequest command to
OTA provider for applying the image. Device will restart on successful
application of OTA image.