AVR Freaks

I have a similar problem...To understand that I am trying to write simple app to control led..Inside this function I do my code.:

 static void csc_app_recv_buf(uint8_t *recv_data, uint8_t recv_len)
{
        
       
                if (recv_len)
                {
                    for (ind = 0; ind < recv_len; ind++)
                    {
                        //    DBG_LOG_CONT("%c", recv_data[ind]);
                        
                             if (recv_data[ind] == '1')
                            {

                              DBG_LOG("led on");

                              gpio_pin_toggle_output_level(PIN_LP_GPIO_15);    //EXT3_PIN_12   
                               
                            }

                             if (recv_data[ind] == '2')

                            {

                              DBG_LOG("led off");

                              gpio_pin_toggle_output_level(PIN_LP_GPIO_15);    //EXT3_PIN_12  
                            }

                     }

               }

}

Once, my device is paired then I can send   '1' or '2' via Atmel smart connect apk chat terminal and thus my led is on or off. Problem is when I am trying to use my own apk (written in MIT app inventor )or any different ble terminal available on the play store, then after paired the bluetooth doesn't recognize incoming data..

Does this Atmel Serial Chat Service example code have any protection and not allow to send any data from different terminal than Atmel smart connect?hmm

Hi

No clue how to manage that communication. I found this function inside the code:

at_ble_status_t csc_prf_write_notification_handler(void *params)
{
 uint8_t data[2] = {1, 0};
 DBG_LOG("\r\n");
 if(at_ble_characteristic_write(app_csc_info.csc_desc.conn_handle, app_csc_info.csc_desc.desc_handle, 0, 2, data, false, true) == AT_BLE_FAILURE){
  DBG_LOG("\r\nFailed to send characteristic Write Request");
 }

 return AT_BLE_SUCCESS;
}

where:

at_ble_status_t at_ble_characteristic_write(at_ble_handle_t conn_handle, at_ble_handle_t char_handle, uint16_t offset, uint16_t length, uint8_t *data, bool signed_write, bool with_response);

Does it mean, if I send a frame of bytes from my apk to sam11 then the communication will be available? if so, How does it look that frame? I used a  ble scanner from app store to find some info about sam11 and found: descriptor uuid: 0x2902 ..how does it eat each other?

Hi

I mean, how does it work? In my android apk. I can discover samb11 and once  I am connected (Tera Term message "connected to peer device with address) then on the serial port that message "Fail  to start discover characteristic" pop up. I think the problem is with the characteristic value that I am trying to send. I do not know what actually need be send to tell samb11 that I am trying to connect. Only what I know is that the service_uuid and characteristic_uuid is defined in atmel studio serial chat code. as you can see I am sending a string of character (value->global array) defined as a global where array is 128bit number (FD5ABBA0-3935-11E5-85A6-0002A5D5C51B​).is that right or it suppose to be something different like from the previous comment the value should be a frame of this: (app_csc_info.csc_desc.conn_handle, app_csc_info.csc_desc.desc_handle, 0, 2, data, false, true​)?If so, then what  are these two first bits? The last block in my apk "when send click" fires up the function form post #4 but obviously doesn't work as samb11 doesn't recognise a char...value from previous  block?? any idea what I suppose to do?

Hi

Does anyone can explain this function and how to send or tell to the  samb11 that I want to send a data from the mobile apk.

at_ble_status_t csc_prf_write_notification_handler(void *params)
{
 uint8_t data[2] = {1, 0}; 
 DBG_LOG("\r\n");
 if(at_ble_characteristic_write(app_csc_info.csc_desc.conn_handle, app_csc_info.csc_desc.desc_handle, 0, 2, data, false, true) == AT_BLE_FAILURE){
  DBG_LOG("\r\nFailed to send characteristic Write Request");
 }

 return AT_BLE_SUCCESS;
}

Hi marpan70,

i have tried adding the write profile in my code but it still shows notify profile

can you elaborate more on how you used the above provided write property in your code.

My SAMB11 shows only notify profile.but i want to write data from my android app to the SAMB11.

I am using CSC code for my application, in the function

at_ble_status_t csc_serv_init(uint8_t *buf, uint16_t len) 

i have added for the line   csc_inst.endpoint_chars.properties = (AT_BLE_CHAR_READ | AT_BLE_CHAR_NOTIFY | AT_BLE_CHAR_WRITE);

but still only notify profile is available, please suggest some solution.