# Navigation Service
## Introduction
The navigation ble service provides 4 characteristics to allow the the watch to display navigation instructions from a companion application.  The intended purpose is when performing some outdoor activities, for example running or cycling.

The 4 characteristics are:
flag (string) - Upcoming icon name
narrative (string) - Textual description of instruction
manDist (string) - Manouvre Distance, the distance to the upcoming change
progress (uint8) - Percent complete of total route, value 0-100

## Service
The service UUID is 00010000-78fc-48fe-8e23-433b3a1942d0

## Characteristics
## Flags (UUID 00010001-78fc-48fe-8e23-433b3a1942d0)
All included icons are from pure-maps, which provides the actual routing from the client. The icon names ultimately come from the mapbox project "direction-icons", See https://github.com/rinigus/pure-maps/tree/master/qml/icons/navigation See the end of this document for the full lsit of supported icon names.

## Narrative (UUID 00010002-78fc-48fe-8e23-433b3a1942d0)
This is a client supplied string describing the upcoming instruction such as "At the roundabout take the first exit".

## Man Dist (UUID 00010003-78fc-48fe-8e23-433b3a1942d0)
This is a short string describing the distance to the upcoming instruction such as "50 m".

## Progress (UUID 00010004-78fc-48fe-8e23-433b3a1942d0)
The percent complete in a uint8.  The watch displays this as an overall progress in a progress bar.

## Full icon list
* arrive
* arrive-left
* arrive-right
* arrive-straight
* close
* continue
* continue-left
* continue-right
* continue-slight-left
* continue-slight-right
* continue-straight
* continue-uturn
* depart
* depart-left
* depart-right
* depart-straight
* end-of-road-left
* end-of-road-right
* ferry
* flag
* fork
* fork-left
* fork-right
* fork-slight-left
* fork-slight-right
* fork-straight
* invalid
* invalid-left
* invalid-right
* invalid-slight-left
* invalid-slight-right
* invalid-straight
* invalid-uturn
* merge-left
* merge-right
* merge-slight-left
* merge-slight-right
* merge-straight
* new-name-left
* new-name-right
* new-name-sharp-left
* new-name-sharp-right
* new-name-slight-left
* new-name-slight-right
* new-name-straight
* notification-left
* notification-right
* notification-sharp-left
* notification-sharp-right
* notification-slight-left
* notification-slight-right
* notification-straight
* off-ramp-left
* off-ramp-right
* off-ramp-sharp-left
* off-ramp-sharp-right
* off-ramp-slight-left
* off-ramp-slight-right
* off-ramp-straight
* on-ramp-left
* on-ramp-right
* on-ramp-sharp-left
* on-ramp-sharp-right
* on-ramp-slight-left
* on-ramp-slight-right
* on-ramp-straight
* rotary
* rotary-left
* rotary-right
* rotary-sharp-left
* rotary-sharp-right
* rotary-slight-left
* rotary-slight-right
* rotary-straight
* roundabout
* roundabout-left
* roundabout-right
* roundabout-sharp-left
* roundabout-sharp-right
* roundabout-slight-left
* roundabout-slight-right
* roundabout-straight
* turn-left
* turn-right
* turn-sharp-left
* turn-sharp-right
* turn-slight-left
* turn-slight-right
* turn-stright
* updown
* uturn
