How i change app timer time using android app?

[vishal]

Hello,

We are using nRF52832 DK, nRF52 sdk15.0 with SES IDE in windows 10. Currently we have senor network which is trigger every 1 Hr and send data trigger time set in program flash memory.

We want to change the sensor trigger time using android app which will connect to our sensor node and send time to set in device.

So how we can update application timer time in sensor node by using android app. The sensor trigger time is different and set it by user like 30 min, 1Hr, 3 Hr, 8Hr, 1 day etc.

Is it need to store in flash by ble android app or it can be do by other way..

Please anyone provide me example code and tutorial link so we can do quickly. In sensor node we are using ble_app_uart example and modified by own application.

Looking forward your response.!!

Thanks in advanced....!!!! 

[Mttrinh]

Hi,

Unfortunately, we do not have an example or tutorial for this specific case. 

You can update your application timer by sending the value you want to the RX characteristic. You can do this in nRF Connect. Then you just have to store this value as the new trigger time before going back to sleep.

[Mttrinh]

Hi,

Yes it is possible, like you said after receiving the value, you can store it in flash so that the value doesn't reset when powering off the sensor device. 

Regarding the flash issue, I suggest you create a new ticket on Devzone with more details on the flash issue.

[vishal]

Hi,

Ok,  But can you suggest other solution instead of store timer variable value in flash. In nordic nRF52832 is it have any simple function to store value in flash instead of writing program for flash. 

Thanks.....

[awneil]

Flash is the only available non-volatile storage  on nRF52 devices - so, if you want something else, you are going to have to add it externally.

[awneil]

The nRF5 SDK provides 'Flash Storage' and 'Flash Data Storage' libraries to help you with storing data in flash:

http://infocenter.nordicsemi.com/topic/com.nordic.infocenter.sdk5.v15.0.0/lib_fds.html?cp=4_0_0_3_52

http://infocenter.nordicsemi.com/topic/com.nordic.infocenter.sdk5.v15.0.0/lib_fstorage.html?cp=4_0_0_3_53