Bluetooth low energy

1 week ago

Hi Dialog Team,

Please somebody could respond to my below queries.

Regards,

Smith 

1 week ago

Hi Smith,

Apologies for the delay.

1. There are two device names, one is the Generic Access Device Name and one is the name appearing in the advertising string.

In order to change the device name field in the Generic Access Service you can temporarily stop advertising(e.g. using the app_easy_gap_advertise_stop function), set the device name using the following commands

device_info.dev_name.length = (strlen(variable_device_name) <= GAP_MAX_NAME_SIZE) ?strlen(variable_device_name) : GAP_MAX_NAME_SIZE;

memcpy(device_info.dev_name.name, variable_device_name, device_info.dev_name.length);

and then restart advertising.

In order to change the name appearing in the advertising string you can call the app_easy_gap_update_adv_data function and pass the new device name in the advertising data. An example of the use of app_easy_gap_update_adv_data can be seen in the ble_app_peripheral example, function adv_data_update_timer_cb. This function is called after APP_ADV_DATA_UPDATE_TO time in order to update the manufacturer data on the advertising string. You can similarly implement a function that will use the app_easy_gap_update_adv_data to update the advertised name instead of the manufacturer data.

2. May I ask which apis are you using for starting the advertising? Are you using app_easy_gap_non_connectable_advertise_get_active and app_easy_gap_non_connectable_advertise_start apis to set the non-connectable advertising?

3. You can follow the SUOTA application development guide
http://lpccs-docs.dialog-semiconductor.com/Tutorial_SDK6/suota_app_dev.html

to add SUOTA capability to your application. You mention that there are a lot of errors when following the example. Could you please clarify what these errors are and where they appear so that we can better understand the issue?

Best regards,
AA_Dialog

1 week ago

Hi dialog,

Thanks for your response.

For my first query 1). I called the below gatt service as below to update the device name when i connected to mobile and configure the name.

char hex_val_t[16]={'\0'};

void user_svc1_devicename_wr_ind_handler(ke_msg_id_t const msgid,
                                  struct custs1_val_write_ind const *param,
                                  ke_task_id_t const dest_id,
                                  ke_task_id_t const src_id)
{
    struct app_device_name* device_name;
    char val[16];
    for(int i=0; i>15; i++)
    {
        memcpy(&val[i], &param->value[i], param->length);
    }
    app_easy_gap_advertise_stop();
    memset(hex_val_t, '0', sizeof(hex_val_t) );
    sprintf (hex_val_t, "%s", param->value );
    sprintf (device_info.dev_name.name, "%s", hex_val_t );
    device_name->length = sizeof(hex_val_t);
    memcpy(device_name->name, device_info.dev_name.name , device_name->length);
    app_easy_gap_update_adv_data((uint8_t *)&hex_val_t, sizeof(hex_val_t), NULL, NULL);
    user_app_adv_start();
}

-------------------------------------------------------------------------------------------------------------------------
 

For my second query 2). I used the both the apis in our function when connected and non connected apis are called with the below function:

/**********************************************************************************************/
void user_app_adv_start(void)
{
    if(bFlag_ble_beacon == false) // when connectable and for conifuration
    {    
        struct gapm_start_advertise_cmd* cmd;
        cmd = app_easy_gap_undirected_advertise_get_active();

        app_add_ad_struct(cmd, &mnf_data, sizeof(struct mnf_specific_data_ad_structure), 1);

        app_easy_gap_undirected_advertise_start();
    }
    if(bFlag_ble_beacon == true) // when configuration done it will turn to beacon mode
    {
        ibeacon_adv_payload_t adv_payload;
        struct gapm_start_advertise_cmd *cmd;
        cmd    = app_easy_gap_non_connectable_advertise_get_active();    

        /* Setup the iBeacon advertising payload */
        adv_payload.flags[0]       = FLAG_0;
        adv_payload.flags[1]       = FLAG_1;
        adv_payload.flags[2]       = FLAG_2;
        adv_payload.length         = LENGTH;
        adv_payload.type           = TYPE;
        adv_payload.company_id[0]  = COMPANY_ID_0;
        adv_payload.company_id[1]  = COMPANY_ID_1;
        adv_payload.beacon_type[0] = BEACON_TYPE_0;
        adv_payload.beacon_type[1] = BEACON_TYPE_1;

        uuid2hex((char *)UUID_STR, adv_payload.uuid);
        
        adv_payload.major[0]= MAJOR & 0x0FF; //high byte
        adv_payload.major[1]= MAJOR >> 8; //high byte

        adv_payload.minor[1]= MINOR & 0x0FF; //high byte
        adv_payload.minor[0]= MINOR >> 8; //high byte

        adv_payload.measured_power = MEASURED_POWER;

        memcpy(cmd->info.host.adv_data, &adv_payload, sizeof(ibeacon_adv_payload_t));
        cmd->info.host.adv_data_len = sizeof(ibeacon_adv_payload_t);

        cmd->intv_min = MS_TO_BLESLOTS(ADV_INTERVAL_ms);
        cmd->intv_max = MS_TO_BLESLOTS(ADV_INTERVAL_ms);

        app_easy_gap_non_connectable_advertise_start();
    }
    else
    {
    
    }
}    
/**********************************************************************************************/
-------------------------------------------------------------------------------------------------------------------------
 

For my third query 3). Based on your below link i will update.

Rgds,

Smith

1 week ago

Hi Dialog,

As per my last mail,  Points no 1 & 2 points need your observations with proper API calls. 

And regarding my 3rd query i.e SUOTA, I have gone through the below suota link and added the same modification (SPI declarations) 
in my ble_Peripheral example.

When i run in debug the code is get stuck in the below portion (__BKPT(0);). Is there any pin conflict?

----------------------------------------------------------------------------------------------------------------------------------------------------
void GPIO_init(void)
{
.
.
.
.

    GPIO_reservations();

#if defined (__DA14531__) && !defined (__NON_BLE_EXAMPLE__)
    if (arch_clk_is_XTAL32() == true)
    {
        // NOTE: As XTAL32K is connected to P03 and P04, neither P03 nor P04
        // shall be reserved when XTAL32K has been selected as LP clock source!!
        ASSERT_WARNING((GPIO[0][3] == 0) && (GPIO[0][4] == 0));
    }
#endif

    GPIO_status = 0;

    for (i = 0; i < NO_OF_PORTS; i++)
    {
        for (j = 0; j < NO_OF_MAX_PINS_PER_PORT; j++)
        {
            uint16_t bitmask = (1 << j);

            if ( !(p_mask[i] & bitmask) ) // port pin does not exist! continue to next port...
            {
                break;
            }
            if (GPIO[i][j] == -1)
            { 
                __BKPT(0); // this pin has been previously reserved!   ///////////////// :NOTE: THE CURSOR STANDING HERE WHEN I RUN THE CODE IN DEBUG" 
            }

            if (GPIO[i][j] == 0)
            {
                continue;
            }
--------------------------------------------------------------------------------------------------------------------------------------------------

Please suggest me where it went wrong. In gpio.c one gpio pin is hard coded in the function (bool GPIO_is_valid(GPIO_PORT port, GPIO_PIN pin)) 
i.e GPIO_PIN_6 used in our custom board connected to switch. i commented this portion? when i add the SUOTA feature this issue is coming. If i am not including SUOTA then there is no issue rest of the functionalities working as per our custom board.

As per my custom board, I have defined my peripheral as per below: rest other SPI lines are defined as same.

GPIO0_11 = LED
GPIO0_6  = BUTTON
GPIO0_8  = I2C_SCL Sensor
GPIO0_9  = I2C_SDA Sensor
GPIO0_7  = INTERRUPT SENSOR

GPIO0_5  = UTX for Debug log (for print purpose in my console using programmer UTX)

Regards,
Smith