Sending data over BT

[Paul Mercer]

Hi,

I'm hoping you can help.

I am using the CENTRAL_UART and PERIPHERAL_UART to evaluate the nRF52840, and using a terminal program works fine.

What I want to do is press a button on the CENTRAL and once received at the PERIPHERAL turn on an LED.

I have code for detecting the button press which works.

When I try and send data from the CENTRAL the board appears to reset (as I get *** Booting Zephyr OS build v3.3.99-ncs1 *** on the terminal) although the data is received at the PERIPHERAL.

The code I have added is this:-

            err = bt_nus_client_send(&nus_client, "1234567890\r", 11);

            if (err) {

                LOG_WRN("Failed to send data over BLE connection"

                    "(err %d)", err);

                printf("Failed to send data over BLE connection button\n"

                    "(err %d)", err);                  

            }

            err = k_sem_take(&nus_write_sem, NUS_WRITE_TIMEOUT);

            if (err) {

                LOG_WRN("NUS send timeout");

                printk("NUS send timeout button\n");

            }

As you can see I am sending a fixed string of 1234567890. None of the 'err' checks generate an error.

Any pointers in the right direction would be greatly received.

Best Regards

Paul Mercer

[Simonr]

Hi

What you're describing here seems very similar to the Peripheral LBS sample available here. I'd recommend referring to that sample to achieve what you're trying to do here. It should be easy to merge with the NUS sample if you also want the UART service in your application.

Best regards,

Simon

[Paul Mercer]

Hi,

It says the sample code is:- samples/bluetooth/peripheral_lbs

I don't have this directory on my PC.

I am using Visual Studio Code and that doesn't appear as an option either.

Where can I download the samples?

Best Regards

Paul