NRF52840 TCP client and server implementation

RE: NRF52840 TCP client and server implementation

zhliao — Thu, 05 Dec 2019 16:50:36 GMT

Hi Edvin,

Thanks for your response, I will try and will let you know if I has any other questions.

Best,

Zhonghao

RE: NRF52840 TCP client and server implementation

Edvin — Thu, 05 Dec 2019 10:18:00 GMT

I suggest that you check out the UART terminal called "Termite" (for Windows). It is fairly easy, and you can send messages both ways. It is also possible to send messages in putty, if you set it up as described here:

https://infocenter.nordicsemi.com/index.jsp?topic=%2Fsdk_nrf5_v16.0.0%2Flib_cli.html&anchor=lib_cli_terminal_settings

But using Termite is easier in my opinion.

[quote user="zhliao"]1. Can we automate the messages that we send instead of manually input the message? 2. How to make the send and receive bi-directional?[/quote]

Yes. If you have one device running ble_app_uart, and one running ble_app_uart_c they can send messages both ways.

on ble_app_uart use ble_nus_data_send() to send the message, and on ble_app_uart_c use ble_nus_c_string_send() to send the message.

You can see from the examples that these are the functions used in the UART events to send the UART messages to the connected device.

BR,

Edvin

RE: NRF52840 TCP client and server implementation

zhliao — Wed, 04 Dec 2019 21:07:31 GMT

Hello,

Thanks for your response. We have checked the SDK\examples\ble_peripheral\ble_app_uart example and it works fine. We can send message from nRF connect to PUTTY, but not the other way as we cannot write the message in PUTTY. We have some follow up questions: 1. Can we automate the messages that we send instead of manually input the message? 2. How to make the send and receive bi-directional? Thank you.

Best,

Zhonghao

RE: NRF52840 TCP client and server implementation

Edvin — Wed, 04 Dec 2019 13:43:00 GMT

Hello,

If you are not interrested in the 3rd party devices, perhaps you can look into some of the examples from the ble_peripheral and ble_central folders in the SDK.

If you want to send custom data between the devices, I suggest you study these two examples:

SDK\examples\ble_peripheral\ble_app_uart
SDK\examples\ble_central\ble_app_uart_c

They can set up a link, and send messages back and forth.

Check out the description of each example:

ble_app_uart

ble_app_uart_c

Best regards,

Edvin