Can't send data to nrf Connect app o NRF52832

RE: Can't send data to nrf Connect app o NRF52832

Tirth_S — Mon, 06 Jan 2025 07:38:42 GMT

hi AIRAM

i try implement this answer in ble_app_uart code but still the data send via nrf52 device that not receives by mobile application although the data send via mobile application that receive by nrf52 device.

please guide me.
thanks in advance.

RE: Can't send data to nrf Connect app o NRF52832

AIRAM — Mon, 17 Apr 2023 09:27:41 GMT

The changes in code that can work for you if you struggling with the same problem, and dont forget to change the option to float

PROJECTS>OPOTIONS> PRINTF>PRINTF FLOATING SUPPORTED( TO FLOAT)

void send_data_via_nus(float X, float Y, ble_nus_t nus_service)
{
uint8_t data[8];
memcpy(data, &X, sizeof(X));
memcpy(data + sizeof(X), &Y, sizeof(Y));

uint16_t length = sizeof(X) + sizeof(Y);
ret_code_t err_code;
err_code = ble_nus_data_send(&m_nus, data, &length, m_conn_handle);
if ((err_code != NRF_ERROR_INVALID_STATE) && (err_code != NRF_ERROR_NOT_FOUND))
{
APP_ERROR_CHECK(err_code);
}

}

RE: Can't send data to nrf Connect app o NRF52832

AIRAM — Sun, 16 Apr 2023 22:26:47 GMT

okay, thanks

RE: Can't send data to nrf Connect app o NRF52832

Simonr — Fri, 14 Apr 2023 10:48:34 GMT

I'm not able to spot anything from the code snippets you've shared. Any chance you could do a sniffer trace so we can see what happens over the air? You can take a sniffer trace either with a dedicated sniffer or with a spare nRF52 DK, Wireshark and the nRF Sniffer.

From seeing what data is actually being sent between the two devices we should be able to get an idea of what's not being transmitter or received correctly.

Best regards,

Simon

RE: Can't send data to nrf Connect app o NRF52832

AIRAM — Thu, 13 Apr 2023 05:54:54 GMT

Standard ble uart example work completely fine separately but when integrate it in my other code( which is also working completely fine separately) it can't send data

RE: Can't send data to nrf Connect app o NRF52832

Simonr — Thu, 13 Apr 2023 05:46:36 GMT

And how exactly is your approach to send data from the nRF52 to the app? Does the standard ble_app_uart application work as intended or not?

Best regards,

Simon

As for angus4iiii , this seems to be the exact opposite problem. I would recommend using nRF Connect instead of the Toolbox app, as the toolbox app is pretty dated at this point. Please also make sure you've set up PuTTY according to our example projects:

Start a terminal emulator like PuTTY and connect to the used COM port with the following UART settings:

Baud rate: 115.200
8 data bits
1 stop bit
No parity
HW flow control: None

RE: Can't send data to nrf Connect app o NRF52832

angus4iiii — Wed, 12 Apr 2023 20:36:01 GMT

I'm also running into some problems as well.

When using the nrfToolbox-->UART-->Connect it just stays as connecting

The debug logs keep showing this:

<info> app: BLE NUS disconnected
<info> app: BLE NUS connected
<info> app: BLE NUS disconnected
<info> app: BLE NUS connected
<info> app: BLE NUS disconnected
<info> app: BLE NUS connected
<info> app: BLE NUS disconnected
<info> app: BLE NUS connected
<info> app: BLE NUS disconnected
<info> app: BLE NUS connected

LED1 is solid

LED3 is solid, right at boot up. It must've immediately connected to my iPhone. When I turn off the Bluetooth on my iPhone, LED3 turns off.

When I send data on PuTTY, LED4 flashes.

The only thing left I have is to send data from my phone and arrive in PuTTY which is not working. Don't know why!

RE: Can't send data to nrf Connect app o NRF52832

AIRAM — Wed, 12 Apr 2023 14:37:02 GMT

Hi Simnor,
There is no error message or log message in debugging, Just the data that i want to send to nRF Connect App,
Like the ble_app_uart i can only receive message from nRF Connect app but can not send any message to app.
When I try to send message or a value , it doesn't show on App

RE: Can't send data to nrf Connect app o NRF52832

Simonr — Wed, 12 Apr 2023 12:39:49 GMT

What have you done in terms of debugging this? Do you see any error or log messages of use if your peripheral is connected to a debugger? And is there any information in the log on nRF Connect side so you can see that notifications are enabled correctly and whether any data is actually sent from the peripheral device.

Are you able to write data manually to the central device like the ble_app_uart application does by default?

Best regards,

Simon

RE: Can't send data to nrf Connect app o NRF52832

AIRAM — Tue, 11 Apr 2023 10:21:33 GMT

Hi, Susheel Nuguru,
Thanks for consideration

RE: Can't send data to nrf Connect app o NRF52832

Susheel Nuguru — Tue, 11 Apr 2023 10:16:39 GMT

Hi,
We just came back from Easter vacation and that was the reason for no response from out end. Due to very high traffic during this period on devzone and fewer people working this week, we did not manage to assign this to an expert yet. We will look into this as soon as possible, but please expect more delays the first two days. Thanks for your patience so far.