I've tried to set up my own BLE project as an exercise in understanding what's going on. It's going okay, with the exception that the device isn't advertising the data that I'd expect it to. At the moment I just have the very basics needed to advertise the device.
My main program:
int main(void)
{
gpio_init();
ble_stack_init();
gap_init();
advertising_init();
ble_advertising_start(BLE_ADV_MODE_FAST);
while(1)
{
}
}
ble_stack_init():
static void ble_stack_init()
{
// Initialise the SoftDevice handler module
SOFTDEVICE_HANDLER_INIT(NRF_CLOCK_LFCLKSRC_XTAL_20_PPM, false);
/** Enable BLE stack **/
ble_enable_params_t ble_enable_params = {0}; //Instantiate enable params structure
ble_enable_params.gatts_enable_params.attr_tab_size = BLE_GATTS_ATTR_TAB_SIZE_DEFAULT; // GATTs attr. table size
ble_enable_params.gatts_enable_params.service_changed = 0; // Don't include the service changed characterstic in the Attr. table
// Enable the BLE stack
sd_ble_enable(&ble_enable_params);
/** Register the SoftDevice BLE Event handlers **/
softdevice_ble_evt_handler_set(ble_evt_dispatch);
softdevice_sys_evt_handler_set(sys_evt_dispatch);
}
gap_init():
static void gap_init(void)
{
uint32_t err_msg;
//ble_gap_addr_t gap_addr; // Use if you want to specifically set the GAP Address
// Instantiate param structs.
ble_gap_conn_params_t gap_conn_params = {0}; // GAP connection parameters
ble_gap_conn_sec_mode_t gap_sec_mode = {0}; // GAP security mode
/** GAP security mode **/
BLE_GAP_CONN_SEC_MODE_SET_OPEN(&gap_sec_mode);
/** Set GAP name **/
err_msg = sd_ble_gap_device_name_set(&gap_sec_mode, (uint8_t *)DEVICE_NAME, strlen(DEVICE_NAME));
check(err_msg);
/** GAP Appearance * Set if required **/
//sd_ble_gap_appearance_set( );
/** GAP connection parameters **/
gap_conn_params.conn_sup_timeout = CONN_SUP_TIMEOUT; // Connection supervisory timeout
gap_conn_params.max_conn_interval = MAX_CONN_INTERVAL; // Max acceptable conn. interval
gap_conn_params.min_conn_interval = MIN_CONN_INTERVAL; // Min ..
gap_conn_params.slave_latency = SLAVE_LATENCY; //
/** Set GAP Peripheral Preferred Connection Parameters **/
sd_ble_gap_ppcp_set(&gap_conn_params);
}
advertising_init():
static void advertising_init(void)
{
/** Create UUID object **/
ble_uuid_t m_adv_uuids[] = {{X_SERVICE_UUID,BLE_UUID_TYPE_VENDOR_BEGIN}}; // Service UUID, UUID type (16 bit, vendor)
// Add more UUIDs for additional services
ble_advdata_t advdata; // Instantiate advertising data struct
memset(&advdata, 0, sizeof(advdata));
/** Advertised Data setup **/
advdata.name_type = BLE_ADVDATA_FULL_NAME; // Advertise full device name
advdata.include_appearance = true;
advdata.flags = BLE_GAP_ADV_FLAGS_LE_ONLY_GENERAL_DISC_MODE; // BLE General Discoverable mode
advdata.uuids_complete.uuid_cnt = sizeof(m_adv_uuids) / sizeof(m_adv_uuids[0]); // Number of UUID entries
advdata.uuids_complete.p_uuids = m_adv_uuids; // Pointer to UUID array entries
/** Advertising Advanced config options **/
ble_adv_modes_config_t adv_options = {0};
adv_options.ble_adv_fast_enabled = BLE_ADV_FAST_ENABLED;
adv_options.ble_adv_fast_interval = APP_ADV_INTERVAL; //
adv_options.ble_adv_fast_timeout = APP_ADV_TIMEOUT_IN_SECONDS;
/** apply advertising configuration **/
ble_advertising_init(&advdata, NULL, &adv_options, on_adv_event, NULL);
}
My device name is set at the top, so I don't really understand what I'm missing now.
