How to connect a CC2530 coordinator using a USB to serial adapter (#940)

* mini howto connect cc2530 an needing configuration

hope this helps

* missing link

* Update how_to_connect_cc2530_via_usb_to_serial_adapter.md

* update

* Update cc_sniffer_devices.md

docs/how_tos/how_to_connect_a_cc2530_coordinator_using_a_usb_to_serial_adapter.md

@@ -0,0 +1,39 @@
+# How to connect a CC2530 coordinator using a USB to serial adapter
+
+## Confirmed working
+This how-to has been confirmed working with the following CC2530 based devices:
+
+| Device| Image |
+| --- | --- |
+| **CC2530** | ![CC2530](../images/cc2530.jpg) |
+
+and the following USB to serial adapters:
+
+| Device| Image |
+| --- | --- |
+| **CP2102** | ![CP2102](../images/CP2102.png) |
+
+## Flashing the firmware
+The required coordinator fimrware can be found here: [CC sniffer devices](../information/cc_sniffer_devices.md).
+
+## Connecting
+Connect to CC2530 to the USB to serial adapter using the following mapping:
+
+| USB-Serial Adaper  | CC2530  |
+| :------------: |:---------------:|
+| 3V3 | VCC |
+| GND | GND |
+| TXD | P02 |
+| RXD | P03 |
+
+Now plug in the USB-to-serial adapter in your USB port.
+
+## Configuration
+Add the following to your Zigbee2mqtt `configuration.yaml`:
+
+```yaml
+advanced:
+  rtscts: false
+```
+
+and start Zigbee2mqtt, enjoy!

docs/index.md

@@ -26,6 +26,7 @@ Welcome to the Zigbee2mqtt documentation!
 * [How to debug](how_tos/how_to_debug.md)
 * [How to support new devices on Hass.io](how_tos/how_to_support_new_devices_on_hassio.md)
 * [How to secure your Zigbee network](how_tos/how_to_secure_network.md)
+* [How to connect a CC2530 coordinator using a USB to serial adapter](how_tos/how_to_connect_a_cc2530_coordinator_using_a_usb_to_serial_adapter.md)
 
 ### Information
 * [Supported devices](information/supported_devices.md)