BLE communication function

[yuval]

hi, im using ble_app_uart and im trying to do a simple communication and data transfer over bluetooth with my iOS.i want to send from the Bluefruit app a byte (0x55 for example) , reiceve it with the nRF , toggle a pin , and transmit a byte (0xAA for example). im using to transmit ble_nus_string_send, but i cant find the function that receives the data (so i can breakpoint and se the value).

[Martin Lesund]

Hi yk9,

  The easiest solution for you would be to just turn on logging through RTT.

in sdk_config.h:

//==========================================================
// <e> NRF_LOG_BACKEND_RTT_ENABLED - nrf_log_backend_rtt - Log RTT backend
//==========================================================
#ifndef NRF_LOG_BACKEND_RTT_ENABLED
#define NRF_LOG_BACKEND_RTT_ENABLED 1
#endif

And switch default severity level to 4:

// <o> NRF_LOG_DEFAULT_LEVEL  - Default Severity level
 
// <0=> Off 
// <1=> Error 
// <2=> Warning 
// <3=> Info 
// <4=> Debug 

#ifndef NRF_LOG_DEFAULT_LEVEL
#define NRF_LOG_DEFAULT_LEVEL 4
#endif

 

Use J-link RTT viewer with these settings:

and you should be able to see what gets sent back and forth.

[yuval]

thanks,

my question is much simpler, i want 2 functions, transmit and receive. i want to communicate, via bluetooth, between my chip (on feather) and an app on my iPhone (Bluefruit for example).
I want my main() to  wait to receive 1 byte from the app and transmit 1 byte (acknowledge) back to the app .
can you help me find the easiest way to do that?

also , how can i debug (breakpoint?) it ?