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Diffstat (limited to 'thirdparty/nRF5_SDK_15.0.0_a53641a/components/ble/ble_services/ble_nus/ble_nus.c')
| -rw-r--r-- | thirdparty/nRF5_SDK_15.0.0_a53641a/components/ble/ble_services/ble_nus/ble_nus.c | 440 |
1 files changed, 440 insertions, 0 deletions
diff --git a/thirdparty/nRF5_SDK_15.0.0_a53641a/components/ble/ble_services/ble_nus/ble_nus.c b/thirdparty/nRF5_SDK_15.0.0_a53641a/components/ble/ble_services/ble_nus/ble_nus.c new file mode 100644 index 0000000..738b6d6 --- /dev/null +++ b/thirdparty/nRF5_SDK_15.0.0_a53641a/components/ble/ble_services/ble_nus/ble_nus.c @@ -0,0 +1,440 @@ +/** + * 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_NUS) +#include "ble.h" +#include "ble_nus.h" +#include "ble_srv_common.h" + +#define NRF_LOG_MODULE_NAME ble_nus +#if BLE_NUS_CONFIG_LOG_ENABLED +#define NRF_LOG_LEVEL BLE_NUS_CONFIG_LOG_LEVEL +#define NRF_LOG_INFO_COLOR BLE_NUS_CONFIG_INFO_COLOR +#define NRF_LOG_DEBUG_COLOR BLE_NUS_CONFIG_DEBUG_COLOR +#else // BLE_NUS_CONFIG_LOG_ENABLED +#define NRF_LOG_LEVEL 0 +#endif // BLE_NUS_CONFIG_LOG_ENABLED +#include "nrf_log.h" +NRF_LOG_MODULE_REGISTER(); + + +#define BLE_UUID_NUS_TX_CHARACTERISTIC 0x0003 /**< The UUID of the TX Characteristic. */ +#define BLE_UUID_NUS_RX_CHARACTERISTIC 0x0002 /**< The UUID of the RX Characteristic. */ + +#define BLE_NUS_MAX_RX_CHAR_LEN BLE_NUS_MAX_DATA_LEN /**< Maximum length of the RX Characteristic (in bytes). */ +#define BLE_NUS_MAX_TX_CHAR_LEN BLE_NUS_MAX_DATA_LEN /**< Maximum length of the TX Characteristic (in bytes). */ + +#define NUS_BASE_UUID {{0x9E, 0xCA, 0xDC, 0x24, 0x0E, 0xE5, 0xA9, 0xE0, 0x93, 0xF3, 0xA3, 0xB5, 0x00, 0x00, 0x40, 0x6E}} /**< Used vendor specific UUID. */ + + +/**@brief Function for handling the @ref BLE_GAP_EVT_CONNECTED event from the SoftDevice. + * + * @param[in] p_nus Nordic UART Service structure. + * @param[in] p_ble_evt Pointer to the event received from BLE stack. + */ +static void on_connect(ble_nus_t * p_nus, ble_evt_t const * p_ble_evt) +{ + ret_code_t err_code; + ble_nus_evt_t evt; + ble_gatts_value_t gatts_val; + uint8_t cccd_value[2]; + ble_nus_client_context_t * p_client = NULL; + + err_code = blcm_link_ctx_get(p_nus->p_link_ctx_storage, + p_ble_evt->evt.gap_evt.conn_handle, + (void *) &p_client); + if (err_code != NRF_SUCCESS) + { + NRF_LOG_ERROR("Link context for 0x%02X connection handle could not be fetched.", + p_ble_evt->evt.gap_evt.conn_handle); + } + + /* Check the hosts CCCD value to inform of readiness to send data using the RX characteristic */ + memset(&gatts_val, 0, sizeof(ble_gatts_value_t)); + gatts_val.p_value = cccd_value; + gatts_val.len = sizeof(cccd_value); + gatts_val.offset = 0; + + err_code = sd_ble_gatts_value_get(p_ble_evt->evt.gap_evt.conn_handle, + p_nus->rx_handles.cccd_handle, + &gatts_val); + + if ((err_code == NRF_SUCCESS) && + (p_nus->data_handler != NULL) && + ble_srv_is_notification_enabled(gatts_val.p_value)) + { + if (p_client != NULL) + { + p_client->is_notification_enabled = true; + } + + memset(&evt, 0, sizeof(ble_nus_evt_t)); + evt.type = BLE_NUS_EVT_COMM_STARTED; + evt.p_nus = p_nus; + evt.conn_handle = p_ble_evt->evt.gap_evt.conn_handle; + evt.p_link_ctx = p_client; + + p_nus->data_handler(&evt); + } +} + + +/**@brief Function for handling the @ref BLE_GATTS_EVT_WRITE event from the SoftDevice. + * + * @param[in] p_nus Nordic UART Service structure. + * @param[in] p_ble_evt Pointer to the event received from BLE stack. + */ +static void on_write(ble_nus_t * p_nus, ble_evt_t const * p_ble_evt) +{ + ret_code_t err_code; + ble_nus_evt_t evt; + ble_nus_client_context_t * p_client; + ble_gatts_evt_write_t const * p_evt_write = &p_ble_evt->evt.gatts_evt.params.write; + + err_code = blcm_link_ctx_get(p_nus->p_link_ctx_storage, + p_ble_evt->evt.gatts_evt.conn_handle, + (void *) &p_client); + if (err_code != NRF_SUCCESS) + { + NRF_LOG_ERROR("Link context for 0x%02X connection handle could not be fetched.", + p_ble_evt->evt.gatts_evt.conn_handle); + } + + memset(&evt, 0, sizeof(ble_nus_evt_t)); + evt.p_nus = p_nus; + evt.conn_handle = p_ble_evt->evt.gatts_evt.conn_handle; + evt.p_link_ctx = p_client; + + if ((p_evt_write->handle == p_nus->tx_handles.cccd_handle) && + (p_evt_write->len == 2)) + { + if (p_client != NULL) + { + if (ble_srv_is_notification_enabled(p_evt_write->data)) + { + p_client->is_notification_enabled = true; + evt.type = BLE_NUS_EVT_COMM_STARTED; + } + else + { + p_client->is_notification_enabled = false; + evt.type = BLE_NUS_EVT_COMM_STOPPED; + } + + if (p_nus->data_handler != NULL) + { + p_nus->data_handler(&evt); + } + + } + } + else if ((p_evt_write->handle == p_nus->rx_handles.value_handle) && + (p_nus->data_handler != NULL)) + { + evt.type = BLE_NUS_EVT_RX_DATA; + evt.params.rx_data.p_data = p_evt_write->data; + evt.params.rx_data.length = p_evt_write->len; + + p_nus->data_handler(&evt); + } + else + { + // Do Nothing. This event is not relevant for this service. + } +} + + +/**@brief Function for handling the @ref BLE_GATTS_EVT_HVN_TX_COMPLETE event from the SoftDevice. + * + * @param[in] p_nus Nordic UART Service structure. + * @param[in] p_ble_evt Pointer to the event received from BLE stack. + */ +static void on_hvx_tx_complete(ble_nus_t * p_nus, ble_evt_t const * p_ble_evt) +{ + ret_code_t err_code; + ble_nus_evt_t evt; + ble_nus_client_context_t * p_client; + + err_code = blcm_link_ctx_get(p_nus->p_link_ctx_storage, + p_ble_evt->evt.gatts_evt.conn_handle, + (void *) &p_client); + if (err_code != NRF_SUCCESS) + { + NRF_LOG_ERROR("Link context for 0x%02X connection handle could not be fetched.", + p_ble_evt->evt.gatts_evt.conn_handle); + return; + } + + if (p_client->is_notification_enabled) + { + memset(&evt, 0, sizeof(ble_nus_evt_t)); + evt.type = BLE_NUS_EVT_TX_RDY; + evt.p_nus = p_nus; + evt.conn_handle = p_ble_evt->evt.gatts_evt.conn_handle; + evt.p_link_ctx = p_client; + + p_nus->data_handler(&evt); + } +} + + +/**@brief Function for adding TX characteristic. + * + * @param[in] p_nus Nordic UART Service structure. + * @param[in] p_nus_init Information needed to initialize the service. + * + * @return NRF_SUCCESS on success, otherwise an error code. + */ +static uint32_t tx_char_add(ble_nus_t * p_nus, ble_nus_init_t const * p_nus_init) +{ + /**@snippet [Adding proprietary characteristic to the SoftDevice] */ + ble_gatts_char_md_t char_md; + ble_gatts_attr_md_t cccd_md; + ble_gatts_attr_t attr_char_value; + ble_uuid_t ble_uuid; + ble_gatts_attr_md_t attr_md; + + memset(&cccd_md, 0, sizeof(cccd_md)); + + BLE_GAP_CONN_SEC_MODE_SET_OPEN(&cccd_md.read_perm); + BLE_GAP_CONN_SEC_MODE_SET_OPEN(&cccd_md.write_perm); + + cccd_md.vloc = BLE_GATTS_VLOC_STACK; + + memset(&char_md, 0, sizeof(char_md)); + + char_md.char_props.notify = 1; + char_md.p_char_user_desc = NULL; + char_md.p_char_pf = NULL; + char_md.p_user_desc_md = NULL; + char_md.p_cccd_md = &cccd_md; + char_md.p_sccd_md = NULL; + + ble_uuid.type = p_nus->uuid_type; + ble_uuid.uuid = BLE_UUID_NUS_TX_CHARACTERISTIC; + + memset(&attr_md, 0, sizeof(attr_md)); + + BLE_GAP_CONN_SEC_MODE_SET_OPEN(&attr_md.read_perm); + BLE_GAP_CONN_SEC_MODE_SET_OPEN(&attr_md.write_perm); + + attr_md.vloc = BLE_GATTS_VLOC_STACK; + attr_md.rd_auth = 0; + attr_md.wr_auth = 0; + attr_md.vlen = 1; + + memset(&attr_char_value, 0, sizeof(attr_char_value)); + + attr_char_value.p_uuid = &ble_uuid; + attr_char_value.p_attr_md = &attr_md; + attr_char_value.init_len = sizeof(uint8_t); + attr_char_value.init_offs = 0; + attr_char_value.max_len = BLE_NUS_MAX_TX_CHAR_LEN; + + return sd_ble_gatts_characteristic_add(p_nus->service_handle, + &char_md, + &attr_char_value, + &p_nus->tx_handles); + /**@snippet [Adding proprietary characteristic to the SoftDevice] */ +} + + +/**@brief Function for adding RX characteristic. + * + * @param[in] p_nus Nordic UART Service structure. + * @param[in] p_nus_init Information needed to initialize the service. + * + * @return NRF_SUCCESS on success, otherwise an error code. + */ +static uint32_t rx_char_add(ble_nus_t * p_nus, const ble_nus_init_t * p_nus_init) +{ + ble_gatts_char_md_t char_md; + ble_gatts_attr_t attr_char_value; + ble_uuid_t ble_uuid; + ble_gatts_attr_md_t attr_md; + + memset(&char_md, 0, sizeof(char_md)); + + char_md.char_props.write = 1; + char_md.char_props.write_wo_resp = 1; + char_md.p_char_user_desc = NULL; + char_md.p_char_pf = NULL; + char_md.p_user_desc_md = NULL; + char_md.p_cccd_md = NULL; + char_md.p_sccd_md = NULL; + + ble_uuid.type = p_nus->uuid_type; + ble_uuid.uuid = BLE_UUID_NUS_RX_CHARACTERISTIC; + + memset(&attr_md, 0, sizeof(attr_md)); + + BLE_GAP_CONN_SEC_MODE_SET_OPEN(&attr_md.read_perm); + BLE_GAP_CONN_SEC_MODE_SET_OPEN(&attr_md.write_perm); + + attr_md.vloc = BLE_GATTS_VLOC_STACK; + attr_md.rd_auth = 0; + attr_md.wr_auth = 0; + attr_md.vlen = 1; + + memset(&attr_char_value, 0, sizeof(attr_char_value)); + + attr_char_value.p_uuid = &ble_uuid; + attr_char_value.p_attr_md = &attr_md; + attr_char_value.init_len = 1; + attr_char_value.init_offs = 0; + attr_char_value.max_len = BLE_NUS_MAX_RX_CHAR_LEN; + + return sd_ble_gatts_characteristic_add(p_nus->service_handle, + &char_md, + &attr_char_value, + &p_nus->rx_handles); +} + + +void ble_nus_on_ble_evt(ble_evt_t const * p_ble_evt, void * p_context) +{ + if ((p_context == NULL) || (p_ble_evt == NULL)) + { + return; + } + + ble_nus_t * p_nus = (ble_nus_t *)p_context; + + switch (p_ble_evt->header.evt_id) + { + case BLE_GAP_EVT_CONNECTED: + on_connect(p_nus, p_ble_evt); + break; + + case BLE_GATTS_EVT_WRITE: + on_write(p_nus, p_ble_evt); + break; + + case BLE_GATTS_EVT_HVN_TX_COMPLETE: + on_hvx_tx_complete(p_nus, p_ble_evt); + break; + + default: + // No implementation needed. + break; + } +} + + +uint32_t ble_nus_init(ble_nus_t * p_nus, ble_nus_init_t const * p_nus_init) +{ + ret_code_t err_code; + ble_uuid_t ble_uuid; + ble_uuid128_t nus_base_uuid = NUS_BASE_UUID; + + VERIFY_PARAM_NOT_NULL(p_nus); + VERIFY_PARAM_NOT_NULL(p_nus_init); + + // Initialize the service structure. + p_nus->data_handler = p_nus_init->data_handler; + + /**@snippet [Adding proprietary Service to the SoftDevice] */ + // Add a custom base UUID. + err_code = sd_ble_uuid_vs_add(&nus_base_uuid, &p_nus->uuid_type); + VERIFY_SUCCESS(err_code); + + ble_uuid.type = p_nus->uuid_type; + ble_uuid.uuid = BLE_UUID_NUS_SERVICE; + + // Add the service. + err_code = sd_ble_gatts_service_add(BLE_GATTS_SRVC_TYPE_PRIMARY, + &ble_uuid, + &p_nus->service_handle); + /**@snippet [Adding proprietary Service to the SoftDevice] */ + VERIFY_SUCCESS(err_code); + + // Add the RX Characteristic. + err_code = rx_char_add(p_nus, p_nus_init); + VERIFY_SUCCESS(err_code); + + // Add the TX Characteristic. + err_code = tx_char_add(p_nus, p_nus_init); + VERIFY_SUCCESS(err_code); + + return NRF_SUCCESS; +} + + +uint32_t ble_nus_data_send(ble_nus_t * p_nus, + uint8_t * p_data, + uint16_t * p_length, + uint16_t conn_handle) +{ + ret_code_t err_code; + ble_gatts_hvx_params_t hvx_params; + ble_nus_client_context_t * p_client; + + VERIFY_PARAM_NOT_NULL(p_nus); + + err_code = blcm_link_ctx_get(p_nus->p_link_ctx_storage, conn_handle, (void *) &p_client); + VERIFY_SUCCESS(err_code); + + if ((conn_handle == BLE_CONN_HANDLE_INVALID) || (p_client == NULL)) + { + return NRF_ERROR_NOT_FOUND; + } + + if (!p_client->is_notification_enabled) + { + return NRF_ERROR_INVALID_STATE; + } + + if (*p_length > BLE_NUS_MAX_DATA_LEN) + { + return NRF_ERROR_INVALID_PARAM; + } + + memset(&hvx_params, 0, sizeof(hvx_params)); + + hvx_params.handle = p_nus->tx_handles.value_handle; + hvx_params.p_data = p_data; + hvx_params.p_len = p_length; + hvx_params.type = BLE_GATT_HVX_NOTIFICATION; + + return sd_ble_gatts_hvx(conn_handle, &hvx_params); +} + + +#endif // NRF_MODULE_ENABLED(BLE_NUS) |