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Project #033: Bluetooth Low Energy RTC | Cypress Semiconductor

Project #033: Bluetooth Low Energy RTC

In most of the wearable devices, data logging has become an integral part of the system. Along with logging the sensor data, time-stamp information is also logged to keep a track of the data w.r.t. the current time. For such cases, Bluetooth Low Energy protocol provides a Current Time Service (CTS) to get the current timing information from the mobile device.
In a CTS, a GATT Client, typically a wearable device, gets the current timinig information from a GATT Server, typically a mobile phone, and use this information to synchronize or set the system time.
In today's example, we demonstrate how to implement a Real Time Clock (RTC) using CTS and configurable wathcdog timers of PSoC 4 BLE device. In this example, the PSoC 4 BLE device, acting as the GATT Client, gets the current timing information when connected with the GATT Server and implements the RTC functionlity.


Lightssout's picture

It only displays Monday and zeros for me.
am I doing something wrong?

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bobgoar's picture

This project does not work just displays Monday and 0:0:01 and when you press the S2 switch it advances one at a time, I believe that this will only work with an Iphone not with android device. Need some information on this issue.

Pushek Madaan's picture

The BLE CTS server is in-built in iOS and all the iOS devices supports this service by default. With an Android device, a custom app is required whic instantiates the CTS server.

Are you using this with an Android device?

rohit.warule_1478321's picture

Dear Sir ,


i am working on the same , i have to update date and time of the BLE  peripheral device  through android app .

please suggest me how to do this ....waiting for favorable reply.....

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