No BLE_GATTS_EVT_HVC event generating when using S140 for bluetooth 5

[Alice]

Hi,

I'm using s140_nrf52840_5.0.0-2 and there are two characteristic for the peripheral, notification and indication. When I use notification to send data, I will get the BLE_GATTS_EVT_HVN_TX_COMPLETE event. But when I use indication to send data, I couldn't get the BLE_GATTS_EVT_HVC event, so I couldn't confirm the data have been sent to the master.

uint32_t Send_Indicate(uint8_t *send_data, uint16_t data_len){	
uint32_t err_code;
ble_gatts_hvx_params_t hvx_params;
memset(&hvx_params, 0, sizeof(hvx_params));			
hvx_params.handle = m_clife.rx_handles_indic.value_handle;
hvx_params.type   = BLE_GATT_HVX_INDICATION;
hvx_params.p_data = send_data;	
hvx_params.p_len  = &data_len;		
err_code = sd_ble_gatts_hvx(m_clife.conn_handle, &hvx_params);}

[bjorn-spockeli]

Hi Alice, it could sound like the peer is not confirming that it received the indication, see this Message Flow Chart. Do you know how this is handled on the peer side? Do you get the BLE_GATTS_EVT_TIMEOUT event?