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Diffstat (limited to 'thirdparty/nRF5_SDK_15.0.0_a53641a/components/ble/ble_services/ble_lbs_c/ble_lbs_c.c')
| -rw-r--r-- | thirdparty/nRF5_SDK_15.0.0_a53641a/components/ble/ble_services/ble_lbs_c/ble_lbs_c.c | 394 |
1 files changed, 394 insertions, 0 deletions
diff --git a/thirdparty/nRF5_SDK_15.0.0_a53641a/components/ble/ble_services/ble_lbs_c/ble_lbs_c.c b/thirdparty/nRF5_SDK_15.0.0_a53641a/components/ble/ble_services/ble_lbs_c/ble_lbs_c.c new file mode 100644 index 0000000..10d8dc6 --- /dev/null +++ b/thirdparty/nRF5_SDK_15.0.0_a53641a/components/ble/ble_services/ble_lbs_c/ble_lbs_c.c @@ -0,0 +1,394 @@ +/** + * Copyright (c) 2012 - 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 "sdk_common.h" +#if NRF_MODULE_ENABLED(BLE_LBS_C) + +#include "ble_lbs_c.h" +#include "ble_db_discovery.h" +#include "ble_types.h" +#include "ble_srv_common.h" +#include "ble_gattc.h" +#define NRF_LOG_MODULE_NAME ble_lbs_c +#include "nrf_log.h" +NRF_LOG_MODULE_REGISTER(); + +#define TX_BUFFER_MASK 0x07 /**< TX Buffer mask, must be a mask of continuous zeroes, followed by continuous sequence of ones: 000...111. */ +#define TX_BUFFER_SIZE (TX_BUFFER_MASK + 1) /**< Size of send buffer, which is 1 higher than the mask. */ + +#define WRITE_MESSAGE_LENGTH BLE_CCCD_VALUE_LEN /**< Length of the write message for CCCD. */ +#define WRITE_MESSAGE_LENGTH BLE_CCCD_VALUE_LEN /**< Length of the write message for CCCD. */ + +typedef enum +{ + READ_REQ, /**< Type identifying that this tx_message is a read request. */ + WRITE_REQ /**< Type identifying that this tx_message is a write request. */ +} tx_request_t; + +/**@brief Structure for writing a message to the peer, i.e. CCCD. + */ +typedef struct +{ + uint8_t gattc_value[WRITE_MESSAGE_LENGTH]; /**< The message to write. */ + ble_gattc_write_params_t gattc_params; /**< GATTC parameters for this message. */ +} write_params_t; + +/**@brief Structure for holding data to be transmitted to the connected central. + */ +typedef struct +{ + uint16_t conn_handle; /**< Connection handle to be used when transmitting this message. */ + tx_request_t type; /**< Type of this message, i.e. read or write message. */ + union + { + uint16_t read_handle; /**< Read request message. */ + write_params_t write_req; /**< Write request message. */ + } req; +} tx_message_t; + + +static tx_message_t m_tx_buffer[TX_BUFFER_SIZE]; /**< Transmit buffer for messages to be transmitted to the central. */ +static uint32_t m_tx_insert_index = 0; /**< Current index in the transmit buffer where the next message should be inserted. */ +static uint32_t m_tx_index = 0; /**< Current index in the transmit buffer from where the next message to be transmitted resides. */ + + +/**@brief Function for passing any pending request from the buffer to the stack. + */ +static void tx_buffer_process(void) +{ + if (m_tx_index != m_tx_insert_index) + { + uint32_t err_code; + + if (m_tx_buffer[m_tx_index].type == READ_REQ) + { + err_code = sd_ble_gattc_read(m_tx_buffer[m_tx_index].conn_handle, + m_tx_buffer[m_tx_index].req.read_handle, + 0); + } + else + { + err_code = sd_ble_gattc_write(m_tx_buffer[m_tx_index].conn_handle, + &m_tx_buffer[m_tx_index].req.write_req.gattc_params); + } + if (err_code == NRF_SUCCESS) + { + NRF_LOG_DEBUG("SD Read/Write API returns Success.."); + m_tx_index++; + m_tx_index &= TX_BUFFER_MASK; + } + else + { + NRF_LOG_DEBUG("SD Read/Write API returns error. This message sending will be " + "attempted again.."); + } + } +} + + +/**@brief Function for handling write response events. + * + * @param[in] p_ble_lbs_c Pointer to the Led Button Client structure. + * @param[in] p_ble_evt Pointer to the BLE event received. + */ +static void on_write_rsp(ble_lbs_c_t * p_ble_lbs_c, ble_evt_t const * p_ble_evt) +{ + // Check if the event if on the link for this instance + if (p_ble_lbs_c->conn_handle != p_ble_evt->evt.gattc_evt.conn_handle) + { + return; + } + // Check if there is any message to be sent across to the peer and send it. + tx_buffer_process(); +} + + +/**@brief Function for handling Handle Value Notification received from the SoftDevice. + * + * @details This function will uses the Handle Value Notification received from the SoftDevice + * and checks if it is a notification of Button state from the peer. If + * it is, this function will decode the state of the button and send it to the + * application. + * + * @param[in] p_ble_lbs_c Pointer to the Led Button Client structure. + * @param[in] p_ble_evt Pointer to the BLE event received. + */ +static void on_hvx(ble_lbs_c_t * p_ble_lbs_c, ble_evt_t const * p_ble_evt) +{ + // Check if the event is on the link for this instance + if (p_ble_lbs_c->conn_handle != p_ble_evt->evt.gattc_evt.conn_handle) + { + return; + } + // Check if this is a Button notification. + if (p_ble_evt->evt.gattc_evt.params.hvx.handle == p_ble_lbs_c->peer_lbs_db.button_handle) + { + if (p_ble_evt->evt.gattc_evt.params.hvx.len == 1) + { + ble_lbs_c_evt_t ble_lbs_c_evt; + + ble_lbs_c_evt.evt_type = BLE_LBS_C_EVT_BUTTON_NOTIFICATION; + ble_lbs_c_evt.conn_handle = p_ble_lbs_c->conn_handle; + ble_lbs_c_evt.params.button.button_state = p_ble_evt->evt.gattc_evt.params.hvx.data[0]; + p_ble_lbs_c->evt_handler(p_ble_lbs_c, &ble_lbs_c_evt); + } + } +} + + +/**@brief Function for handling Disconnected event received from the SoftDevice. + * + * @details This function check if the disconnect event is happening on the link + * associated with the current instance of the module, if so it will set its + * conn_handle to invalid. + * + * @param[in] p_ble_lbs_c Pointer to the Led Button Client structure. + * @param[in] p_ble_evt Pointer to the BLE event received. + */ +static void on_disconnected(ble_lbs_c_t * p_ble_lbs_c, ble_evt_t const * p_ble_evt) +{ + if (p_ble_lbs_c->conn_handle == p_ble_evt->evt.gap_evt.conn_handle) + { + p_ble_lbs_c->conn_handle = BLE_CONN_HANDLE_INVALID; + p_ble_lbs_c->peer_lbs_db.button_cccd_handle = BLE_GATT_HANDLE_INVALID; + p_ble_lbs_c->peer_lbs_db.button_handle = BLE_GATT_HANDLE_INVALID; + p_ble_lbs_c->peer_lbs_db.led_handle = BLE_GATT_HANDLE_INVALID; + } +} + + +void ble_lbs_on_db_disc_evt(ble_lbs_c_t * p_ble_lbs_c, ble_db_discovery_evt_t const * p_evt) +{ + // Check if the Led Button Service was discovered. + if (p_evt->evt_type == BLE_DB_DISCOVERY_COMPLETE && + p_evt->params.discovered_db.srv_uuid.uuid == LBS_UUID_SERVICE && + p_evt->params.discovered_db.srv_uuid.type == p_ble_lbs_c->uuid_type) + { + ble_lbs_c_evt_t evt; + + evt.evt_type = BLE_LBS_C_EVT_DISCOVERY_COMPLETE; + evt.conn_handle = p_evt->conn_handle; + + for (uint32_t i = 0; i < p_evt->params.discovered_db.char_count; i++) + { + const ble_gatt_db_char_t * p_char = &(p_evt->params.discovered_db.charateristics[i]); + switch (p_char->characteristic.uuid.uuid) + { + case LBS_UUID_LED_CHAR: + evt.params.peer_db.led_handle = p_char->characteristic.handle_value; + break; + case LBS_UUID_BUTTON_CHAR: + evt.params.peer_db.button_handle = p_char->characteristic.handle_value; + evt.params.peer_db.button_cccd_handle = p_char->cccd_handle; + break; + + default: + break; + } + } + + NRF_LOG_DEBUG("Led Button Service discovered at peer."); + //If the instance has been assigned prior to db_discovery, assign the db_handles + if (p_ble_lbs_c->conn_handle != BLE_CONN_HANDLE_INVALID) + { + if ((p_ble_lbs_c->peer_lbs_db.led_handle == BLE_GATT_HANDLE_INVALID)&& + (p_ble_lbs_c->peer_lbs_db.button_handle == BLE_GATT_HANDLE_INVALID)&& + (p_ble_lbs_c->peer_lbs_db.button_cccd_handle == BLE_GATT_HANDLE_INVALID)) + { + p_ble_lbs_c->peer_lbs_db = evt.params.peer_db; + } + } + + p_ble_lbs_c->evt_handler(p_ble_lbs_c, &evt); + + } +} + + +uint32_t ble_lbs_c_init(ble_lbs_c_t * p_ble_lbs_c, ble_lbs_c_init_t * p_ble_lbs_c_init) +{ + uint32_t err_code; + ble_uuid_t lbs_uuid; + ble_uuid128_t lbs_base_uuid = {LBS_UUID_BASE}; + + VERIFY_PARAM_NOT_NULL(p_ble_lbs_c); + VERIFY_PARAM_NOT_NULL(p_ble_lbs_c_init); + VERIFY_PARAM_NOT_NULL(p_ble_lbs_c_init->evt_handler); + + p_ble_lbs_c->peer_lbs_db.button_cccd_handle = BLE_GATT_HANDLE_INVALID; + p_ble_lbs_c->peer_lbs_db.button_handle = BLE_GATT_HANDLE_INVALID; + p_ble_lbs_c->peer_lbs_db.led_handle = BLE_GATT_HANDLE_INVALID; + p_ble_lbs_c->conn_handle = BLE_CONN_HANDLE_INVALID; + p_ble_lbs_c->evt_handler = p_ble_lbs_c_init->evt_handler; + + err_code = sd_ble_uuid_vs_add(&lbs_base_uuid, &p_ble_lbs_c->uuid_type); + if (err_code != NRF_SUCCESS) + { + return err_code; + } + VERIFY_SUCCESS(err_code); + + lbs_uuid.type = p_ble_lbs_c->uuid_type; + lbs_uuid.uuid = LBS_UUID_SERVICE; + + return ble_db_discovery_evt_register(&lbs_uuid); +} + +void ble_lbs_c_on_ble_evt(ble_evt_t const * p_ble_evt, void * p_context) +{ + if ((p_context == NULL) || (p_ble_evt == NULL)) + { + return; + } + + ble_lbs_c_t * p_ble_lbs_c = (ble_lbs_c_t *)p_context; + + switch (p_ble_evt->header.evt_id) + { + case BLE_GATTC_EVT_HVX: + on_hvx(p_ble_lbs_c, p_ble_evt); + break; + + case BLE_GATTC_EVT_WRITE_RSP: + on_write_rsp(p_ble_lbs_c, p_ble_evt); + break; + + case BLE_GAP_EVT_DISCONNECTED: + on_disconnected(p_ble_lbs_c, p_ble_evt); + break; + + default: + break; + } +} + + +/**@brief Function for configuring the CCCD. + * + * @param[in] conn_handle The connection handle on which to configure the CCCD. + * @param[in] handle_cccd The handle of the CCCD to be configured. + * @param[in] enable Whether to enable or disable the CCCD. + * + * @return NRF_SUCCESS if the CCCD configure was successfully sent to the peer. + */ +static uint32_t cccd_configure(uint16_t conn_handle, uint16_t handle_cccd, bool enable) +{ + NRF_LOG_DEBUG("Configuring CCCD. CCCD Handle = %d, Connection Handle = %d", + handle_cccd,conn_handle); + + tx_message_t * p_msg; + uint16_t cccd_val = enable ? BLE_GATT_HVX_NOTIFICATION : 0; + + p_msg = &m_tx_buffer[m_tx_insert_index++]; + m_tx_insert_index &= TX_BUFFER_MASK; + + p_msg->req.write_req.gattc_params.handle = handle_cccd; + p_msg->req.write_req.gattc_params.len = WRITE_MESSAGE_LENGTH; + p_msg->req.write_req.gattc_params.p_value = p_msg->req.write_req.gattc_value; + p_msg->req.write_req.gattc_params.offset = 0; + p_msg->req.write_req.gattc_params.write_op = BLE_GATT_OP_WRITE_REQ; + p_msg->req.write_req.gattc_value[0] = LSB_16(cccd_val); + p_msg->req.write_req.gattc_value[1] = MSB_16(cccd_val); + p_msg->conn_handle = conn_handle; + p_msg->type = WRITE_REQ; + + tx_buffer_process(); + return NRF_SUCCESS; +} + + +uint32_t ble_lbs_c_button_notif_enable(ble_lbs_c_t * p_ble_lbs_c) +{ + VERIFY_PARAM_NOT_NULL(p_ble_lbs_c); + + if (p_ble_lbs_c->conn_handle == BLE_CONN_HANDLE_INVALID) + { + return NRF_ERROR_INVALID_STATE; + } + + return cccd_configure(p_ble_lbs_c->conn_handle, + p_ble_lbs_c->peer_lbs_db.button_cccd_handle, + true); +} + + +uint32_t ble_lbs_led_status_send(ble_lbs_c_t * p_ble_lbs_c, uint8_t status) +{ + VERIFY_PARAM_NOT_NULL(p_ble_lbs_c); + + if (p_ble_lbs_c->conn_handle == BLE_CONN_HANDLE_INVALID) + { + return NRF_ERROR_INVALID_STATE; + } + + NRF_LOG_DEBUG("writing LED status 0x%x", status); + + tx_message_t * p_msg; + + p_msg = &m_tx_buffer[m_tx_insert_index++]; + m_tx_insert_index &= TX_BUFFER_MASK; + + p_msg->req.write_req.gattc_params.handle = p_ble_lbs_c->peer_lbs_db.led_handle; + p_msg->req.write_req.gattc_params.len = sizeof(status); + p_msg->req.write_req.gattc_params.p_value = p_msg->req.write_req.gattc_value; + p_msg->req.write_req.gattc_params.offset = 0; + p_msg->req.write_req.gattc_params.write_op = BLE_GATT_OP_WRITE_CMD; + p_msg->req.write_req.gattc_value[0] = status; + p_msg->conn_handle = p_ble_lbs_c->conn_handle; + p_msg->type = WRITE_REQ; + + tx_buffer_process(); + return NRF_SUCCESS; +} + +uint32_t ble_lbs_c_handles_assign(ble_lbs_c_t * p_ble_lbs_c, + uint16_t conn_handle, + const lbs_db_t * p_peer_handles) +{ + VERIFY_PARAM_NOT_NULL(p_ble_lbs_c); + + p_ble_lbs_c->conn_handle = conn_handle; + if (p_peer_handles != NULL) + { + p_ble_lbs_c->peer_lbs_db = *p_peer_handles; + } + return NRF_SUCCESS; +} + +#endif // NRF_MODULE_ENABLED(BLE_LBS_C) |