Sending message from Master Control Panel to EK

[Tom]

I am successfully sending data from the PCA10001 Evaluation Kit to the Master Control Panel. But I cannot find any information about initiating and sending data from the MCP to the EK. I need to send commands from the MCP requesting actions on the EK.

[Ole Morten]

Sorry for the delay here, but it is vacation times in Norway.

However, to send data from Master Control Panel to the Evaluation Kit, all you have to do is to have a characteristic with the Write property and then write data to it. Writing data can be done by writing either hex or ASCII data into the value field in MCP, and then pressing "Send update". This will then appear as a BLE_GATTS_EVT_WRITE on the nRF51822. In the event structure you can then read out the data written, as well as which characteristic it was written to.

[Bastiaan]

Hello Morten,

I tried to send from Dongle to EV kit as you suggested but no success. Can you explain in detail how data can be sent to EV kit from dongle And in which procedure of BLE I can receive data.

Regards

Talha

[Guest]

Hello Morten,

I tried to send from Dongle to EV kit as you suggested but no success. Can you explain in detail how data can be sent to EV kit from dongle And in which procedure of BLE I can receive data.

Regards

Talha

[Ole Morten]

I'd recommend you to take a look on this application note, and especially look at how a write to the LED characteristic is handled. That should show you what's needed: https://www.nordicsemi.com/eng/content/download/34055/573345/file/nAN-36.zip