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@@ -24,9 +24,12 @@ I've tested this project on the actual PineTime hardware. * Project builds and runs on the Pinetime; * Logs available via JLink RTT; - * Basic LCD driver. + * Basic (but faster) LCD driver. + * One big font to display the time (hours : minutes) + * BLE advertising, connection and bonding + * BLE CTS client (retrieves the time from the connected device if it implements a CTS server) -## How to use it +## How to build * Download and unzip arm-none-eabi and NRF52 SDK * Clone this repo @@ -63,4 +66,25 @@ $ JLinkExe -device nrf52 -if swd -speed 4000 -autoconnect 1 ``` $ JLinkRTTClient -```
\ No newline at end of file +``` + +## Tools + + - https://github.com/eliotstock/memory : display the memory usage (FLASH/RAM) using the .map file from GCC. + +## BLE connection, bonding and time synchronization +At runtime, BLE advertising is started. You can then use a smartphone or computer to connect and bond to your Pinetime. +As soon as a device is bonded, Pinetime will look for a **CTS** server (**C**urrent **T**ime **S**ervice) on the connected device. + +Here is how to do it with an Android smartphone running NRFConnect: + +* Build and program the firmware on the Pinetime +* Install NRFConnect (https://www.nordicsemi.com/Software-and-Tools/Development-Tools/nRF-Connect-for-desktop) +* Start NRFConnect and create a CTS server : + - Tap the hamburger button on the top left and select "Configure GATT server" + - Tap "Add service" on the bottom + - Select server configuration "Current Time Service" and tap OK +* Go back to the main screen and scan for BLE devices. A device called "PineTime" should appear +* Tap the button "Connect" next to the PineTime device. It should connect to the PineTime and switch to a new tab. +* On this tab, on the top right, there is a 3 dots button. Tap on it and select Bond. The bonding process begins, and if it is sucessful, the PineTime should update its time and display it on the screen. +
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