1 files changed, 437 insertions, 0 deletions

diff --git a/thirdparty/nRF5_SDK_15.0.0_a53641a/components/ble/ble_services/experimental_ble_ots/ble_ots_l2cap.c b/thirdparty/nRF5_SDK_15.0.0_a53641a/components/ble/ble_services/experimental_ble_ots/ble_ots_l2cap.c
new file mode 100644
index 0000000..b51e086
--- /dev/null
+++ b/thirdparty/nRF5_SDK_15.0.0_a53641a/components/ble/ble_services/experimental_ble_ots/ble_ots_l2cap.c
@@ -0,0 +1,437 @@
+/**
+ * Copyright (c) 2017 - 2018, Nordic Semiconductor ASA
+ * 
+ * All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ * 
+ * 1. Redistributions of source code must retain the above copyright notice, this
+ *    list of conditions and the following disclaimer.
+ * 
+ * 2. Redistributions in binary form, except as embedded into a Nordic
+ *    Semiconductor ASA integrated circuit in a product or a software update for
+ *    such product, must reproduce the above copyright notice, this list of
+ *    conditions and the following disclaimer in the documentation and/or other
+ *    materials provided with the distribution.
+ * 
+ * 3. Neither the name of Nordic Semiconductor ASA nor the names of its
+ *    contributors may be used to endorse or promote products derived from this
+ *    software without specific prior written permission.
+ * 
+ * 4. This software, with or without modification, must only be used with a
+ *    Nordic Semiconductor ASA integrated circuit.
+ * 
+ * 5. Any software provided in binary form under this license must not be reverse
+ *    engineered, decompiled, modified and/or disassembled.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY NORDIC SEMICONDUCTOR ASA "AS IS" AND ANY EXPRESS
+ * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY, NONINFRINGEMENT, AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL NORDIC SEMICONDUCTOR ASA OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
+ * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ * 
+ */
+#include "ble_ots_l2cap.h"
+
+#include <string.h>
+#include "ble_l2cap.h"
+
+#include "ble_ots.h"
+#include "ble_ots_oacp.h"
+
+#define NRF_LOG_MODULE_NAME ble_ots_l2cap
+#include "nrf_log.h"
+NRF_LOG_MODULE_REGISTER();
+
+#define SDU_SIZE 256
+
+
+static uint8_t data[SDU_SIZE];
+static ble_data_t m_sdu_buf =
+{
+    .p_data = data,
+    .len    = SDU_SIZE
+};
+
+bool ble_ots_l2cap_is_channel_available(ble_ots_l2cap_t * p_ots_l2cap)
+{
+    return p_ots_l2cap->state == CONNECTED;
+}
+
+uint32_t ble_ots_l2cap_abort_transmission(ble_ots_l2cap_t * p_ots_l2cap)
+{
+    if (p_ots_l2cap == NULL)
+    {
+        return NRF_ERROR_NULL;
+    }
+    return NRF_ERROR_INVALID_PARAM;
+}
+
+uint32_t ble_ots_l2cap_init(ble_ots_l2cap_t * p_ots_l2cap, ble_ots_l2cap_init_t * p_ots_l2cap_init)
+{
+    if (p_ots_l2cap == NULL || p_ots_l2cap_init == NULL)
+    {
+        return NRF_ERROR_NULL;
+    }
+    if (p_ots_l2cap_init->p_transfer_buffer == NULL || p_ots_l2cap_init->buffer_len == 0)
+    {
+        return NRF_ERROR_INVALID_PARAM;
+    }
+    if (p_ots_l2cap_init->p_ots_oacp == NULL)
+    {
+        return NRF_ERROR_INVALID_PARAM;
+    }
+    if (p_ots_l2cap_init->evt_handler == NULL)
+    {
+        return NRF_ERROR_INVALID_PARAM;
+    }
+
+    memset(p_ots_l2cap, 0, sizeof(ble_ots_l2cap_t));
+
+    p_ots_l2cap->local_cid  = BLE_OTS_INVALID_CID;
+
+    p_ots_l2cap->p_ots_oacp               = p_ots_l2cap_init->p_ots_oacp;
+    p_ots_l2cap->evt_handler              = p_ots_l2cap_init->evt_handler;
+    p_ots_l2cap->rx_params.sdu_buf.len    = m_sdu_buf.len;
+    p_ots_l2cap->rx_params.sdu_buf.p_data = m_sdu_buf.p_data;
+
+    p_ots_l2cap->state = NOT_CONNECTED;
+
+    return NRF_SUCCESS;
+}
+
+
+
+/**@brief This function resumes sending data after an interrupt in the transfer.
+ *
+ * @param[in] p_ots_l2cap  Object Transfer Service structure.
+ */
+static void ble_ots_l2cap_resume_send(ble_ots_l2cap_t * p_ots_l2cap)
+{
+    uint16_t transmit_size;
+    ble_data_t data_buf;
+
+    transmit_size = MIN(p_ots_l2cap->tx_params.tx_mtu, p_ots_l2cap->remaining_bytes);
+
+    data_buf.p_data = &p_ots_l2cap->tx_transfer_buffer.p_data[p_ots_l2cap->transfer_len - p_ots_l2cap->remaining_bytes];
+    data_buf.len    = transmit_size;
+
+
+    uint32_t err_code = sd_ble_l2cap_ch_tx(p_ots_l2cap->p_ots_oacp->p_ots->conn_handle,
+                                            p_ots_l2cap->local_cid,
+                                            &data_buf);
+
+    if (err_code != NRF_SUCCESS && err_code != NRF_ERROR_BUSY)
+    {
+        if (p_ots_l2cap->p_ots_oacp->p_ots->error_handler != NULL)
+        {
+            p_ots_l2cap->p_ots_oacp->p_ots->error_handler(err_code);
+            return;
+        }
+    }
+}
+
+
+uint32_t ble_ots_l2cap_start_send(ble_ots_l2cap_t * p_ots_l2cap, uint8_t * p_data, uint16_t data_len)
+{
+    if (p_ots_l2cap == NULL)
+    {
+        return NRF_ERROR_NULL;
+    }
+    if (p_data == NULL)
+    {
+        return NRF_ERROR_NULL;
+    }
+    if (data_len == 0)
+    {
+        return NRF_ERROR_INVALID_LENGTH;
+    }
+    if (p_ots_l2cap->local_cid == BLE_L2CAP_CID_INVALID)
+    {
+        return NRF_ERROR_INVALID_STATE;
+    }
+    if (p_ots_l2cap->state != CONNECTED)
+    {
+        return NRF_ERROR_INVALID_STATE;
+    }
+
+    p_ots_l2cap->tx_transfer_buffer.p_data = p_data;
+    p_ots_l2cap->tx_transfer_buffer.len    = data_len;
+
+    p_ots_l2cap->remaining_bytes = data_len;
+    p_ots_l2cap->transfer_len    = data_len;
+
+    p_ots_l2cap->state = SENDING;
+
+    ble_ots_l2cap_resume_send(p_ots_l2cap);
+
+    return NRF_SUCCESS;
+}
+
+uint32_t ble_ots_l2cap_start_recv(ble_ots_l2cap_t * p_ots_l2cap, uint16_t len)
+{
+    uint32_t err_code;
+
+    if (p_ots_l2cap == NULL)
+    {
+        return NRF_ERROR_NULL;
+    }
+    if (p_ots_l2cap->state != CONNECTED)
+    {
+        return NRF_ERROR_INVALID_STATE;
+    }
+    if (p_ots_l2cap->local_cid == BLE_L2CAP_CID_INVALID)
+    {
+        return NRF_ERROR_INVALID_STATE;
+    }
+    p_ots_l2cap->transfered_bytes = 0;
+    p_ots_l2cap->remaining_bytes = len;
+    p_ots_l2cap->transfer_len    = len;
+
+    err_code = sd_ble_l2cap_ch_rx(p_ots_l2cap->p_ots_oacp->p_ots->conn_handle,
+                                  p_ots_l2cap->local_cid,
+                                  &p_ots_l2cap->rx_params.sdu_buf);
+    if (err_code == NRF_SUCCESS)
+    {
+        p_ots_l2cap->state = RECEIVING;
+    }
+
+    return err_code;
+}
+
+/**@brief This function is called on a channel setup request. It responds with the connection parameters.
+ * @param[in]   p_ots_l2cap Object transfer service l2cap module structure.
+ * @param[in]   p_ble_evt   Event received from the BLE stack.
+ */
+static inline void on_l2cap_ch_setup_request(ble_ots_l2cap_t * p_ots_l2cap, ble_evt_t const * p_ble_evt)
+{
+    uint32_t                    err_code;
+    ble_l2cap_ch_setup_params_t ch_setup_params = {{0}};
+
+    if (p_ble_evt->evt.l2cap_evt.params.ch_setup_request.le_psm != BLE_OTS_PSM)
+    {
+        ch_setup_params.status = BLE_L2CAP_CH_STATUS_CODE_LE_PSM_NOT_SUPPORTED;
+        NRF_LOG_WARNING("l2cap setup request for PSM 0x%x, rejecting since OTS PSM is 0x%x",
+                        p_ble_evt->evt.l2cap_evt.params.ch_setup_request.le_psm,
+                        BLE_L2CAP_CH_STATUS_CODE_LE_PSM_NOT_SUPPORTED);
+    }
+
+    else
+    {
+        ch_setup_params.status = BLE_L2CAP_CH_STATUS_CODE_SUCCESS;
+
+        ch_setup_params.rx_params.rx_mps = p_ots_l2cap->conn_mps;
+        if (ch_setup_params.rx_params.rx_mps < BLE_L2CAP_MPS_MIN)
+        {
+            ch_setup_params.rx_params.rx_mps = BLE_L2CAP_MPS_MIN;
+        }
+        ch_setup_params.rx_params.rx_mtu = p_ots_l2cap->conn_mtu;
+        if (ch_setup_params.rx_params.rx_mtu < BLE_L2CAP_MTU_MIN)
+        {
+            ch_setup_params.rx_params.rx_mtu = BLE_L2CAP_MTU_MIN;
+        }
+        ch_setup_params.rx_params.sdu_buf.p_data = NULL;
+    }
+
+    p_ots_l2cap->local_cid = p_ble_evt->evt.l2cap_evt.local_cid;
+
+    err_code = sd_ble_l2cap_ch_setup(p_ots_l2cap->p_ots_oacp->p_ots->conn_handle,
+                                     &p_ots_l2cap->local_cid,
+                                     &ch_setup_params);
+    if (err_code != NRF_SUCCESS)
+    {
+        if (p_ots_l2cap->p_ots_oacp->p_ots->error_handler != NULL)
+        {
+            p_ots_l2cap->p_ots_oacp->p_ots->error_handler(err_code);
+        }
+
+    }
+    NRF_LOG_INFO("Accepted L2CAP Channel");
+}
+
+
+/**@brief This function is called on a channel setup request. The parameters are stored. Events are forwarded.
+ *
+ * @param[in]   p_ots_l2cap Object transfer service l2cap module structure.
+ * @param[in]   p_ble_evt   Event received from the BLE stack.
+ */
+static inline void on_l2cap_ch_setup(ble_ots_l2cap_t * p_ots_l2cap, ble_evt_t const * p_ble_evt)
+{
+    p_ots_l2cap->local_cid         = p_ble_evt->evt.l2cap_evt.local_cid;
+    p_ots_l2cap->tx_params.credits = p_ble_evt->evt.l2cap_evt.params.ch_setup.tx_params.credits;
+    p_ots_l2cap->tx_params.tx_mps  = p_ble_evt->evt.l2cap_evt.params.ch_setup.tx_params.tx_mps;
+    p_ots_l2cap->tx_params.tx_mtu  = p_ble_evt->evt.l2cap_evt.params.ch_setup.tx_params.tx_mtu;
+    ble_ots_l2cap_evt_t evt;
+
+    evt.type = BLE_OTS_L2CAP_EVT_CH_CONNECTED;
+
+    p_ots_l2cap->state = CONNECTED;
+    p_ots_l2cap->evt_handler(p_ots_l2cap, &evt);
+}
+
+
+/**@brief Function for handling the BLE_L2CAP_EVT_CH_RELEASED event.
+ *
+ * @param[in] p_ots_l2cap Object transfer service l2cap module structure.
+ * @param[in] p_ble_evt   Pointer to the event received from BLE stack.
+ */
+static inline void on_l2cap_ch_released(ble_ots_l2cap_t * p_ots_l2cap, ble_evt_t const * p_ble_evt)
+{
+    if(p_ots_l2cap->local_cid != p_ble_evt->evt.l2cap_evt.local_cid)
+    {
+        return;
+    }
+    ble_ots_l2cap_evt_t evt;
+
+    evt.type = BLE_OTS_L2CAP_EVT_CH_DISCONNECTED;
+
+    p_ots_l2cap->evt_handler(p_ots_l2cap, &evt);
+
+    p_ots_l2cap->state = NOT_CONNECTED;
+
+    p_ots_l2cap->local_cid = BLE_OTS_INVALID_CID;
+
+}
+
+
+/**@brief This function ois called tx is completet. It continues to send if necessary.
+ *
+ * @param[in] p_ots_l2cap Object transfer service l2cap module structure.
+ * @param[in] p_ble_evt   Pointer to the event received from BLE stack.
+ */
+static void on_tx_complete(ble_ots_l2cap_t * p_ots_l2cap, ble_evt_t const * p_ble_evt)
+{
+    if(p_ots_l2cap->local_cid != p_ble_evt->evt.l2cap_evt.local_cid)
+    {
+        return;
+    }
+
+    p_ots_l2cap->remaining_bytes -= p_ble_evt->evt.l2cap_evt.params.tx.sdu_buf.len;
+
+    if (p_ots_l2cap->remaining_bytes == 0)
+    {
+        ble_ots_l2cap_evt_t evt;
+
+        evt.type = BLE_OTS_L2CAP_EVT_SEND_COMPLETE;
+        evt.param.len = p_ots_l2cap->transfer_len;
+        evt.param.p_data = p_ots_l2cap->tx_transfer_buffer.p_data;
+        evt.param.len = p_ots_l2cap->tx_transfer_buffer.len;
+
+        p_ots_l2cap->evt_handler(p_ots_l2cap, &evt);
+
+        p_ots_l2cap->state = CONNECTED;
+
+        p_ots_l2cap->transfer_len   = 0;
+    }
+    else
+    {
+        ble_ots_l2cap_resume_send(p_ots_l2cap);
+    }
+}
+
+
+static void on_l2cap_ch_rx(ble_ots_l2cap_t * p_ots_l2cap, ble_evt_t const * p_ble_evt)
+{
+    if(p_ots_l2cap->local_cid != p_ble_evt->evt.l2cap_evt.local_cid)
+    {
+        return;
+    }
+
+    ble_ots_l2cap_evt_t evt;
+
+    memcpy(&p_ots_l2cap->p_ots_oacp->p_ots->p_current_object->data[p_ots_l2cap->transfered_bytes],
+           p_ble_evt->evt.l2cap_evt.params.rx.sdu_buf.p_data,
+           p_ble_evt->evt.l2cap_evt.params.rx.sdu_len);
+    NRF_LOG_DEBUG("Object buffer dump");
+    NRF_LOG_HEXDUMP_DEBUG(p_ots_l2cap->rx_params.sdu_buf.p_data , p_ots_l2cap->rx_params.sdu_buf.len);
+    p_ots_l2cap->transfered_bytes += p_ble_evt->evt.l2cap_evt.params.rx.sdu_len;
+    p_ots_l2cap->remaining_bytes  -= p_ble_evt->evt.l2cap_evt.params.rx.sdu_len;
+    NRF_LOG_INFO("Bytes remaining to receive: %i", p_ots_l2cap->remaining_bytes);
+    p_ots_l2cap->state = CONNECTED;
+
+    p_ots_l2cap->transfer_len   = 0;
+
+    if(p_ots_l2cap->remaining_bytes <= 0)
+    {
+        evt.type         = BLE_OTS_L2CAP_EVT_RECV_COMPLETE;
+        evt.param.len    = p_ots_l2cap->rx_params.sdu_buf.len;
+        evt.param.p_data = p_ots_l2cap->rx_params.sdu_buf.p_data;
+        p_ots_l2cap->evt_handler(p_ots_l2cap, &evt);
+    }
+    else
+    {
+        ret_code_t err_code;
+
+        ble_data_t sdu_buf;
+        sdu_buf.p_data = &p_ots_l2cap->rx_params.sdu_buf.p_data[p_ots_l2cap->transfered_bytes];
+        sdu_buf.len    = p_ots_l2cap->rx_params.sdu_buf.len;
+
+        err_code = sd_ble_l2cap_ch_rx(p_ots_l2cap->p_ots_oacp->p_ots->conn_handle,
+                                      p_ots_l2cap->local_cid,
+                                      &sdu_buf);
+        if (err_code == NRF_SUCCESS)
+        {
+            p_ots_l2cap->state = RECEIVING;
+        }
+        else
+        {
+            p_ots_l2cap->state = CONNECTED;
+        }
+    }
+}
+
+
+
+void ble_ots_l2cap_on_ble_evt(ble_ots_l2cap_t * p_ots_l2cap, ble_evt_t const * p_ble_evt)
+{
+    if ((p_ots_l2cap == NULL) || (p_ble_evt == NULL))
+    {
+        return;
+    }
+
+    switch (p_ble_evt->header.evt_id)
+    {
+        case BLE_L2CAP_EVT_CH_SETUP_REQUEST:
+            on_l2cap_ch_setup_request(p_ots_l2cap, p_ble_evt);
+            break;
+
+        case BLE_L2CAP_EVT_CH_SETUP_REFUSED:
+            // This should not happen because the client should be the initiator.
+            if (p_ots_l2cap->p_ots_oacp->p_ots->error_handler != NULL)
+            {
+                p_ots_l2cap->p_ots_oacp->p_ots->error_handler(NRF_ERROR_INVALID_STATE);
+            }
+            break;
+
+        case BLE_L2CAP_EVT_CH_SETUP:
+            on_l2cap_ch_setup(p_ots_l2cap, p_ble_evt);
+            break;
+
+        case BLE_L2CAP_EVT_CH_RELEASED:
+            on_l2cap_ch_released(p_ots_l2cap, p_ble_evt);
+            break;
+        case BLE_L2CAP_EVT_CH_SDU_BUF_RELEASED:
+            break;
+        case BLE_L2CAP_EVT_CH_CREDIT:
+            break;
+        case BLE_L2CAP_EVT_CH_RX:
+            on_l2cap_ch_rx(p_ots_l2cap, p_ble_evt);
+            break;
+
+        case BLE_L2CAP_EVT_CH_TX:
+            on_tx_complete(p_ots_l2cap, p_ble_evt);
+            break;
+        default:
+            // No implementation needed.
+            break;
+    }
+}
+
+
+