void ser_conn_ble_event_encoder(void * p_event_data, uint16_t event_size)
{
if (NULL == p_event_data)
{
APP_ERROR_CHECK(NRF_ERROR_NULL);
}
UNUSED_PARAMETER(event_size);
uint32_t err_code = NRF_SUCCESS;
uint8_t * p_tx_buf = NULL;
uint32_t tx_buf_len = 0;
ble_evt_t * p_ble_evt = (ble_evt_t *)p_event_data;
/* Allocate a memory buffer from HAL Transport layer for transmitting an event.
* Loop until a buffer is available. */
do
{
err_code = ser_hal_transport_tx_pkt_alloc(&p_tx_buf, (uint16_t *)&tx_buf_len);
}
while (err_code == NRF_ERROR_NO_MEM);
APP_ERROR_CHECK(err_code);
/* Create a new packet. */
p_tx_buf[SER_PKT_TYPE_POS] = SER_PKT_TYPE_EVT;
tx_buf_len -= SER_PKT_TYPE_SIZE;
/* Pass a memory for an event (opcode + data) and encode it. */
err_code = ble_event_enc(p_ble_evt, 0, &p_tx_buf[SER_PKT_OP_CODE_POS], &tx_buf_len);
if (NRF_ERROR_NOT_SUPPORTED != err_code)
{
APP_ERROR_CHECK(err_code);
tx_buf_len += SER_PKT_TYPE_SIZE;
err_code = ser_hal_transport_tx_pkt_send(p_tx_buf, (uint16_t)tx_buf_len);
APP_ERROR_CHECK(err_code);
/* TX buffer is going to be freed automatically in the HAL Transport layer.
* Scheduler must be paused because this function returns before a packet is physically sent
* by transport layer. This can cause start processing of a next event from the application
* scheduler queue. In result the next event reserves the TX buffer before the current
* packet is sent. If in meantime a command arrives a command response cannot be sent in
* result. Pausing the scheduler temporary prevents processing a next event. */
app_sched_pause();
}
else
{
/* Event was NOT encoded, therefore the buffer is freed immediately. */
err_code = ser_hal_transport_tx_pkt_free(p_tx_buf);
APP_ERROR_CHECK(err_code);
APP_ERROR_CHECK(SER_WARNING_CODE);
}
}
uint32_t ser_sd_transport_tx_free(uint8_t * p_data)
{
return ser_hal_transport_tx_pkt_free(p_data);
}
/**
* @brief A callback function to be used to handle a PHY module events. This function is called in
* an interrupt context.
*/
static void phy_events_handler(ser_phy_evt_t phy_event)
{
uint32_t err_code = 0;
ser_hal_transport_evt_t hal_transp_event;
memset(&hal_transp_event, 0, sizeof (ser_hal_transport_evt_t));
hal_transp_event.evt_type = SER_HAL_TRANSP_EVT_TYPE_MAX;
switch (phy_event.evt_type)
{
case SER_PHY_EVT_TX_PKT_SENT:
{
if (HAL_TRANSP_TX_STATE_TRANSMITTING == m_tx_state)
{
m_tx_state = HAL_TRANSP_TX_STATE_TRANSMITTED;
err_code = ser_hal_transport_tx_pkt_free(m_tx_buffer);
APP_ERROR_CHECK(err_code);
/* An event to an upper layer that a packet has been transmitted. */
hal_transp_event.evt_type = SER_HAL_TRANSP_EVT_TX_PKT_SENT;
m_events_handler(hal_transp_event);
}
else
{
/* Lower layer should not generate this event in current state. */
APP_ERROR_CHECK_BOOL(false);
}
break;
}
case SER_PHY_EVT_RX_BUF_REQUEST:
{
/* An event to an upper layer that a packet is being scheduled to receive or to drop. */
hal_transp_event.evt_type = SER_HAL_TRANSP_EVT_RX_PKT_RECEIVING;
/* Receive or drop a packet. */
if (phy_event.evt_params.rx_buf_request.num_of_bytes <= sizeof (m_rx_buffer))
{
if (HAL_TRANSP_RX_STATE_IDLE == m_rx_state)
{
m_events_handler(hal_transp_event);
err_code = ser_phy_rx_buf_set(m_rx_buffer);
APP_ERROR_CHECK(err_code);
m_rx_state = HAL_TRANSP_RX_STATE_RECEIVING;
}
else if (HAL_TRANSP_RX_STATE_RECEIVED == m_rx_state)
{
/* It is OK to get know higher layer at this point that we are going to receive
* a new packet even though we will start receiving when rx buffer is freed. */
m_events_handler(hal_transp_event);
m_rx_state = HAL_TRANSP_RX_STATE_RECEIVED_PENDING_BUF_REQ;
}
else
{
/* Lower layer should not generate this event in current state. */
APP_ERROR_CHECK_BOOL(false);
}
}
else
{
/* There is not enough memory but packet has to be received to dummy location. */
if (HAL_TRANSP_RX_STATE_IDLE == m_rx_state)
{
m_events_handler(hal_transp_event);
err_code = ser_phy_rx_buf_set(NULL);
APP_ERROR_CHECK(err_code);
m_rx_state = HAL_TRANSP_RX_STATE_DROPPING;
}
else if (HAL_TRANSP_RX_STATE_RECEIVED == m_rx_state)
{
m_events_handler(hal_transp_event);
err_code = ser_phy_rx_buf_set(NULL);
APP_ERROR_CHECK(err_code);
m_rx_state = HAL_TRANSP_RX_STATE_RECEIVED_DROPPING;
}
else
{
/* Lower layer should not generate this event in current state. */
APP_ERROR_CHECK_BOOL(false);
}
}
break;
}
case SER_PHY_EVT_RX_PKT_RECEIVED:
{
if (HAL_TRANSP_RX_STATE_RECEIVING == m_rx_state)
{
m_rx_state = HAL_TRANSP_RX_STATE_RECEIVED;
/* Generate the event to an upper layer. */
hal_transp_event.evt_type =
SER_HAL_TRANSP_EVT_RX_PKT_RECEIVED;
hal_transp_event.evt_params.rx_pkt_received.p_buffer =
phy_event.evt_params.rx_pkt_received.p_buffer;
hal_transp_event.evt_params.rx_pkt_received.num_of_bytes =
phy_event.evt_params.rx_pkt_received.num_of_bytes;
m_events_handler(hal_transp_event);
}
else
{
/* Lower layer should not generate this event in current state. */
APP_ERROR_CHECK_BOOL(false);
}
break;
}
case SER_PHY_EVT_RX_PKT_DROPPED:
{
if (HAL_TRANSP_RX_STATE_DROPPING == m_rx_state)
{
/* Generate the event to an upper layer. */
hal_transp_event.evt_type = SER_HAL_TRANSP_EVT_RX_PKT_DROPPED;
m_events_handler(hal_transp_event);
m_rx_state = HAL_TRANSP_RX_STATE_IDLE;
}
else if (HAL_TRANSP_RX_STATE_RECEIVED_DROPPING == m_rx_state)
{
/* Generate the event to an upper layer. */
hal_transp_event.evt_type = SER_HAL_TRANSP_EVT_RX_PKT_DROPPED;
m_events_handler(hal_transp_event);
m_rx_state = HAL_TRANSP_RX_STATE_RECEIVED;
}
else
{
/* Lower layer should not generate this event in current state. */
APP_ERROR_CHECK_BOOL(false);
}
break;
}
case SER_PHY_EVT_RX_OVERFLOW_ERROR:
{
/* Generate the event to an upper layer. */
hal_transp_event.evt_type = SER_HAL_TRANSP_EVT_PHY_ERROR;
hal_transp_event.evt_params.phy_error.error_type =
SER_HAL_TRANSP_PHY_ERROR_RX_OVERFLOW;
m_events_handler(hal_transp_event);
break;
}
case SER_PHY_EVT_TX_OVERREAD_ERROR:
{
/* Generate the event to an upper layer. */
hal_transp_event.evt_type = SER_HAL_TRANSP_EVT_PHY_ERROR;
hal_transp_event.evt_params.phy_error.error_type =
SER_HAL_TRANSP_PHY_ERROR_TX_OVERREAD;
m_events_handler(hal_transp_event);
break;
}
case SER_PHY_EVT_HW_ERROR:
{
/* Generate the event to an upper layer. */
hal_transp_event.evt_type = SER_HAL_TRANSP_EVT_PHY_ERROR;
hal_transp_event.evt_params.phy_error.error_type =
SER_HAL_TRANSP_PHY_ERROR_HW_ERROR;
hal_transp_event.evt_params.phy_error.hw_error_code =
phy_event.evt_params.hw_error.error_code;
m_events_handler(hal_transp_event);
break;
}
default:
{
APP_ERROR_CHECK_BOOL(false);
break;
}
}
}
