I need to establish serial communication between nRF52832 to MK81(NXP) with BLE

[Thiru]

I need to control the BLE ON/OFF state and send some data to MK81 via BLE through UART, we have estalished  the Hardware connection between the nRF52832 chip and MK81,

How to format the data to send and receive from UART between these chips, I have flashed "ble_app_uart_pca10040_s112" binary and got discoverd the BLE, But the data communication is required for me, is the example "ble_app_uart" is enough or needed to add more logic to archieve this?,  Please share your thoughts.

And please share with me if anyone having the BLE work flow of  "ble_app_uart" on nRF52832.

Thanks much.

Kind Regards,

Thiru.

[Joakim Jakobsen]

Hi.

Maybe you could add some more information here?

Do you want to transfer data using serial or BLE connection?

Anyway, you should be able to use the ble_app_uart example on the nRF in order to transfer UART data.
More information about the example and how to test it can be found in the documentation;
https://infocenter.nordicsemi.com/topic/sdk_nrf5_v17.0.2/ble_sdk_app_nus_eval.html

[Thiru]

Hi,

Thank you so much for the guide,

i understood the concept from the guide what you have shared.

I need to change the UART pin details as per my carear board, When i change the pin numbers in "pca10040.h" file,  BLE is not discovered.

If i change below UART Pins what else i need to change/consider to work normal BLE operation in "ble_app_uart" example

Current state:

#define RX_PIN_NUMBER 8
#define TX_PIN_NUMBER 6
#define CTS_PIN_NUMBER 7
#define RTS_PIN_NUMBER 5

Changed to :

#define RX_PIN_NUMBER 9
#define TX_PIN_NUMBER 10
#define CTS_PIN_NUMBER 18
#define RTS_PIN_NUMBER 20

Thank you for your help.

Kind Regards,

Thiru.

[Joakim Jakobsen]

Hi.

You need to make sure that the pins you change to is not used by any other peripheral, which may cause problems.

Also, if the pins are left floating this will most likely cause noise on the line, resulting in a communication error.

Br,
Joakim

[Thiru]

Hi Joakim,

Thank you for the support,

I have used the NFC pins (9 & 10) as a GPIO, 

So need to define "CONFIG_NFCT_PINS_AS_GPIOS" this macro in preprocessor definitions, 

It is working now, i'm able to transfer data over bluetooth.

Thank you.

Kind Regards,

Thiru.

[Joakim Jakobsen]

Thats it!

Thanks for sharing the solution.

BR,
Joakim