UART (send/transmit characters) Atmeg16 (or similar) + nrf52840

[gebi0207]

Hi there,

for the first step we simply want to send characters from ATMEGA 16 to a Raspberry Pi / and receive them from Raspberry pi

with teh NRF52480 (itsyBitsy - Adafruit Board) board.

We are coding in C  - Is there a small example / tutorial how to send /receive data for the Atmega uC in C-Language for nRF52840.

(AT-Commands / API....) + Libraries

[IDE - Atmel Studio 7.0]

Best regards

gebi0207

[Jared]

Hi,

This board?

for the first step we simply want to send characters from ATMEGA 16 to a Raspberry Pi / and receive them from Raspberry pi

 Not sure how the nRF52840 is related to this? 

Atmega uC in C-Language for nRF52840

 This is a bit unclear, can you elaborate!?

regards

Jared 

[gebi0207]

Hi Jared -

thanks for your fast response.

As I understood the nRF5280 has a TxD and RxD - Pin (UART).

So - if I have to send Data from the nRF5280 and additional from an additional uC (Atmel) to a Raspberry Pi - The Data from the uC should be send/recieve from UART over Bluetooth to the Raspberry Pi and back.

So for the uC -  the nRF5280 should work as "Bluetooth - Node". Normally there are AT-Commands to set up the Bluetooth Node and to send/transmit the Data .... like

sprintf("RST + /n")

sprintf("....Initialisation.....")

sprintf(" Data ...")

Do you have a small setzup for this application (not in Arduino Code - we would prefere C-Code)

Best regards

Gerold

[Jared]

Hi,

I think I understand. You want to use the nRF52840 as a bridge between the ATmega chip and the Raspberry Pi, it will receive data over serial and pass it over BLE.  The easiest would properly be to use the ble_app_uart example as explained in this post. An alternative is to use serialization. 

We have no AT command library for the nRF52 series. 

regards

Jared 

[gebi0207]

Hi Jared,

thank you - yes that´s a gate - we will starte with the ble_app_uart_example.

Best regards

Gerold