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Diffstat (limited to 'thirdparty/nRF5_SDK_15.0.0_a53641a/components/ble/ble_services/ble_hids/ble_hids.c')
| -rw-r--r-- | thirdparty/nRF5_SDK_15.0.0_a53641a/components/ble/ble_services/ble_hids/ble_hids.c | 1794 |
1 files changed, 1794 insertions, 0 deletions
diff --git a/thirdparty/nRF5_SDK_15.0.0_a53641a/components/ble/ble_services/ble_hids/ble_hids.c b/thirdparty/nRF5_SDK_15.0.0_a53641a/components/ble/ble_services/ble_hids/ble_hids.c new file mode 100644 index 0000000..1bf0b38 --- /dev/null +++ b/thirdparty/nRF5_SDK_15.0.0_a53641a/components/ble/ble_services/ble_hids/ble_hids.c @@ -0,0 +1,1794 @@ +/** + * 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. + * + */ +/* Attention! + * To maintain compliance with Nordic Semiconductor ASA's Bluetooth profile + * qualification listings, this section of source code must not be modified. + */ +#include "sdk_common.h" +#if NRF_MODULE_ENABLED(BLE_HIDS) +#include "ble_hids.h" +#include <string.h> +#include "app_error.h" +#include "ble_srv_common.h" + + +// Protocol Mode values +#define PROTOCOL_MODE_BOOT 0x00 /**< Boot Protocol Mode. */ +#define PROTOCOL_MODE_REPORT 0x01 /**< Report Protocol Mode. */ + +// HID Control Point values +#define HIDS_CONTROL_POINT_SUSPEND 0 /**< Suspend command. */ +#define HIDS_CONTROL_POINT_EXIT_SUSPEND 1 /**< Exit Suspend command. */ + +#define DEFAULT_PROTOCOL_MODE PROTOCOL_MODE_REPORT /**< Default value for the Protocol Mode characteristic. */ +#define INITIAL_VALUE_HID_CONTROL_POINT HIDS_CONTROL_POINT_SUSPEND /**< Initial value for the HID Control Point characteristic. */ + +#define ENCODED_HID_INFORMATION_LEN 4 /**< Maximum size of an encoded HID Information characteristic. */ + +/**@brief Handles errors for HID service module. + * + * @param[in] _p_hids HID Service structure. + * @param[in] _err_code Maximum number of HID hosts connected at a time. + * + */ +#define BLE_HIDS_ERROR_HANDLE(_p_hids, _err_code) \ + do \ + { \ + if (((_err_code) != NRF_SUCCESS) && ((_p_hids)->error_handler != NULL)) \ + { \ + (_p_hids)->error_handler((_err_code)); \ + } \ + } while (0) + + +/**@brief Function for calculating the link context size for the HID service. + * + * @param[in] p_hids HID Service structure. + * + * @return Link context size. + */ +static size_t ble_hids_client_context_size_calc(ble_hids_t * p_hids) +{ + size_t client_size = sizeof(ble_hids_client_context_t) + (BOOT_KB_INPUT_REPORT_MAX_SIZE) + + (BOOT_KB_OUTPUT_REPORT_MAX_SIZE) + (BOOT_MOUSE_INPUT_REPORT_MAX_SIZE); + + if (p_hids->p_inp_rep_init_array != NULL) + { + for (uint32_t i = 0; i < p_hids->inp_rep_count; i++) + { + client_size += p_hids->p_inp_rep_init_array[i].max_len; + } + } + if (p_hids->p_outp_rep_init_array != NULL) + { + for (uint32_t i = 0; i < p_hids->outp_rep_count; i++) + { + client_size += p_hids->p_outp_rep_init_array[i].max_len; + } + } + if (p_hids->p_feature_rep_init_array != NULL) + { + for (uint32_t i = 0; i < p_hids->feature_rep_count; i++) + { + client_size += p_hids->p_feature_rep_init_array[i].max_len; + } + } + + return client_size; +} + + +/**@brief Function for making a HID Service characteristic id. + * + * @param[in] uuid UUID of characteristic. + * @param[in] rep_type Type of report. + * @param[in] rep_index Index of the characteristic. + * + * @return HID Service characteristic id structure. + */ +static ble_hids_char_id_t make_char_id(uint16_t uuid, uint8_t rep_type, uint8_t rep_index) +{ + ble_hids_char_id_t char_id = {0}; + + char_id.uuid = uuid; + char_id.rep_type = rep_type; + char_id.rep_index = rep_index; + + return char_id; +} + + +/**@brief Function for handling the Connect event. + * + * @param[in] p_hids HID Service structure. + * @param[in] p_ble_evt Event received from the BLE stack. + */ +static void on_connect(ble_hids_t * p_hids, ble_evt_t const * p_ble_evt) +{ + uint32_t err_code; + ble_gatts_value_t gatts_value; + ble_hids_client_context_t * p_client = NULL; + + err_code = blcm_link_ctx_get(p_hids->p_link_ctx_storage, + p_ble_evt->evt.gap_evt.conn_handle, + (void *) &p_client); + BLE_HIDS_ERROR_HANDLE(p_hids, err_code); + + if (p_client == NULL) + { + return; + } + + memset(p_client, 0, ble_hids_client_context_size_calc(p_hids)); + + if (p_hids->protocol_mode_handles.value_handle) + { + // Set Protocol Mode characteristic value to default value + p_client->protocol_mode = DEFAULT_PROTOCOL_MODE; + + // Initialize value struct. + memset(&gatts_value, 0, sizeof(gatts_value)); + + gatts_value.len = sizeof(uint8_t); + gatts_value.offset = 0; + gatts_value.p_value = &p_client->protocol_mode; + + err_code = sd_ble_gatts_value_set(p_ble_evt->evt.gap_evt.conn_handle, + p_hids->protocol_mode_handles.value_handle, + &gatts_value); + BLE_HIDS_ERROR_HANDLE(p_hids, err_code); + } +} + + +/**@brief Function for handling write events to the HID Control Point value. + * + * @param[in] p_hids HID Service structure. + * @param[in] p_evt_write Write event received from the BLE stack. + */ +static void on_control_point_write(ble_hids_t * p_hids, ble_evt_t const * p_ble_evt) +{ + ret_code_t err_code; + ble_hids_client_context_t * p_host; + ble_gatts_evt_write_t const * p_evt_write = &p_ble_evt->evt.gatts_evt.params.write; + + err_code = blcm_link_ctx_get(p_hids->p_link_ctx_storage, + p_ble_evt->evt.gatts_evt.conn_handle, + (void *) &p_host); + BLE_HIDS_ERROR_HANDLE(p_hids, err_code); + + if (p_host == NULL) + { + return; + } + + if (p_evt_write->len == 1) + { + ble_hids_evt_t evt; + + switch (p_evt_write->data[0]) + { + case HIDS_CONTROL_POINT_SUSPEND: + evt.evt_type = BLE_HIDS_EVT_HOST_SUSP; + break; + + case HIDS_CONTROL_POINT_EXIT_SUSPEND: + evt.evt_type = BLE_HIDS_EVT_HOST_EXIT_SUSP; + break; + + default: + // Illegal Control Point value, ignore + return; + } + + // Store the new Control Point value for the host + p_host->ctrl_pt = p_evt_write->data[0]; + + // HID Control Point written, propagate event to application + if (p_hids->evt_handler != NULL) + { + evt.p_ble_evt = p_ble_evt; + p_hids->evt_handler(p_hids, &evt); + } + } +} + + +/**@brief Function for handling write events to the Protocol Mode value. + * + * @param[in] p_hids HID Service structure. + * @param[in] p_ble_evt BLE event received from the BLE stack. + */ +static void on_protocol_mode_write(ble_hids_t * p_hids, ble_evt_t const * p_ble_evt) +{ + ret_code_t err_code; + ble_hids_client_context_t * p_host; + ble_gatts_evt_write_t const * p_evt_write = &p_ble_evt->evt.gatts_evt.params.write; + + err_code = blcm_link_ctx_get(p_hids->p_link_ctx_storage, + p_ble_evt->evt.gatts_evt.conn_handle, + (void *) &p_host); + BLE_HIDS_ERROR_HANDLE(p_hids, err_code); + + + if (p_host == NULL) + { + return; + } + + if (p_evt_write->len == 1) + { + ble_hids_evt_t evt; + + switch (p_evt_write->data[0]) + { + case PROTOCOL_MODE_BOOT: + evt.evt_type = BLE_HIDS_EVT_BOOT_MODE_ENTERED; + break; + + case PROTOCOL_MODE_REPORT: + evt.evt_type = BLE_HIDS_EVT_REPORT_MODE_ENTERED; + break; + + default: + // Illegal Protocol Mode value, ignore + return; + } + + // Store Protocol Mode of the host + p_host->protocol_mode = p_evt_write->data[0]; + + // HID Protocol Mode written, propagate event to application + if (p_hids->evt_handler != NULL) + { + evt.p_ble_evt = p_ble_evt; + p_hids->evt_handler(p_hids, &evt); + } + } +} + + +/**@brief Function for handling authorize read events to the Protocol Mode value. + * + * @param[in] p_hids HID Service structure. + * @param[in] p_ble_evt BLE event received from the BLE stack. + */ +void on_protocol_mode_read_auth(ble_hids_t * p_hids, ble_evt_t const * p_ble_evt) +{ + ret_code_t err_code; + ble_gatts_rw_authorize_reply_params_t auth_read_params; + ble_hids_client_context_t * p_host; + ble_gatts_evt_rw_authorize_request_t const * p_read_auth = + &p_ble_evt->evt.gatts_evt.params.authorize_request; + + err_code = blcm_link_ctx_get(p_hids->p_link_ctx_storage, + p_ble_evt->evt.gatts_evt.conn_handle, + (void *) &p_host); + BLE_HIDS_ERROR_HANDLE(p_hids, err_code); + + // Update GATTS table with this host's Protocol Mode value and authorize Read + if (p_host != NULL) + { + memset(&auth_read_params, 0, sizeof(auth_read_params)); + + auth_read_params.type = BLE_GATTS_AUTHORIZE_TYPE_READ; + auth_read_params.params.read.gatt_status = BLE_GATT_STATUS_SUCCESS; + auth_read_params.params.read.offset = p_read_auth->request.read.offset; + auth_read_params.params.read.len = sizeof(uint8_t); + auth_read_params.params.read.p_data = &p_host->protocol_mode; + auth_read_params.params.read.update = 1; + + err_code = sd_ble_gatts_rw_authorize_reply(p_ble_evt->evt.gap_evt.conn_handle, + &auth_read_params); + BLE_HIDS_ERROR_HANDLE(p_hids, err_code); + } +} + + +/**@brief Function for handling write events to a report CCCD. + * + * @param[in] p_hids HID Service structure. + * @param[in] p_char_id Id of report characteristic. + * @param[in] p_ble_evt BLE event received from the BLE stack. + */ +static void on_report_cccd_write(ble_hids_t * p_hids, + ble_hids_char_id_t * p_char_id, + ble_evt_t const * p_ble_evt) +{ + ble_gatts_evt_write_t const * p_evt_write = &p_ble_evt->evt.gatts_evt.params.write; + + if (p_evt_write->len == 2) + { + // CCCD written, update notification state + if (p_hids->evt_handler != NULL) + { + ble_hids_evt_t evt; + + if (ble_srv_is_notification_enabled(p_evt_write->data)) + { + evt.evt_type = BLE_HIDS_EVT_NOTIF_ENABLED; + } + else + { + evt.evt_type = BLE_HIDS_EVT_NOTIF_DISABLED; + } + evt.params.notification.char_id = *p_char_id; + evt.p_ble_evt = p_ble_evt; + + p_hids->evt_handler(p_hids, &evt); + } + } +} + + +/**@brief Function for handling write events to a report value. + * + * @param[in] p_hids HID Service structure. + * @param[in] p_ble_evt Pointer to BLE event structure. + * @param[in] p_char_id Id of report characteristic. + * @param[in] rep_offset Offset to the affected HID report data. + * @param[in] rep_max_len Maximum HID report length. + */ +static void on_report_value_write(ble_hids_t * p_hids, + ble_evt_t const * p_ble_evt, + ble_hids_char_id_t * p_char_id, + uint16_t rep_offset, + uint16_t rep_max_len) +{ + // Update host's Output Report data + ret_code_t err_code; + uint8_t * p_report; + ble_hids_client_context_t * p_host; + ble_gatts_evt_write_t const * p_write = &p_ble_evt->evt.gatts_evt.params.write; + + err_code = blcm_link_ctx_get(p_hids->p_link_ctx_storage, + p_ble_evt->evt.gatts_evt.conn_handle, + (void *) &p_host); + BLE_HIDS_ERROR_HANDLE(p_hids, err_code); + + // Store the written values in host's report data + if ((p_host != NULL) && (p_write->len + p_write->offset <= rep_max_len)) + { + p_report = (uint8_t *) p_host + rep_offset; + memcpy(p_report, p_write->data, p_write->len); + } + else + { + return; + } + + // Notify the applicartion + if (p_hids->evt_handler != NULL) + { + ble_hids_evt_t evt; + + evt.evt_type = BLE_HIDS_EVT_REP_CHAR_WRITE; + evt.params.char_write.char_id = *p_char_id; + evt.params.char_write.offset = p_ble_evt->evt.gatts_evt.params.write.offset; + evt.params.char_write.len = p_ble_evt->evt.gatts_evt.params.write.len; + evt.params.char_write.data = p_ble_evt->evt.gatts_evt.params.write.data; + evt.p_ble_evt = p_ble_evt; + + p_hids->evt_handler(p_hids, &evt); + } +} + + +/**@brief Handle authorize read events to a report value. + * + * @param[in] p_hids HID Service structure. + * @param[in] p_char_id Id of report characteristic. + * @param[in] p_ble_evt Pointer to BLE event structure. + * @param[in] rep_offset Report data offset. + * @param[in] rep_max_len Report maximum length. + */ +static void on_report_value_read_auth(ble_hids_t * p_hids, + ble_hids_char_id_t * p_char_id, + ble_evt_t const * p_ble_evt, + uint16_t rep_offset, + uint16_t rep_max_len) +{ + ble_gatts_rw_authorize_reply_params_t auth_read_params; + ble_hids_client_context_t * p_host; + uint8_t * p_report; + uint16_t read_offset; + uint32_t err_code = NRF_SUCCESS; + + err_code = blcm_link_ctx_get(p_hids->p_link_ctx_storage, + p_ble_evt->evt.gatts_evt.conn_handle, + (void *) &p_host); + BLE_HIDS_ERROR_HANDLE(p_hids, err_code); + + // Update Report GATTS table with host's current report data + if (p_host != NULL) + { + read_offset = p_ble_evt->evt.gatts_evt.params.authorize_request.request.read.offset; + p_report = (uint8_t *) p_host + rep_offset; + memset(&auth_read_params, 0, sizeof(auth_read_params)); + + auth_read_params.type = BLE_GATTS_AUTHORIZE_TYPE_READ; + auth_read_params.params.read.gatt_status = BLE_GATT_STATUS_SUCCESS; + auth_read_params.params.read.offset = read_offset; + auth_read_params.params.read.len = rep_max_len - read_offset; + auth_read_params.params.read.p_data = p_report + read_offset; + auth_read_params.params.read.update = 1; + + err_code = sd_ble_gatts_rw_authorize_reply(p_ble_evt->evt.gap_evt.conn_handle, + &auth_read_params); + + BLE_HIDS_ERROR_HANDLE(p_hids, err_code); + } + else + { + return; + } + + if (p_hids->evt_handler != NULL) + { + ble_hids_evt_t evt; + + evt.evt_type = BLE_HIDS_EVT_REPORT_READ; + evt.params.char_auth_read.char_id = *p_char_id; + evt.p_ble_evt = p_ble_evt; + + p_hids->evt_handler(p_hids, &evt); + } +} + + +/**@brief Function for finding the Characteristic Id of a characteristic corresponding to a CCCD handle. + * + * @param[in] p_hids HID Service structure. + * @param[in] handle Handle to search for. + * @param[out] p_char_id Id of report characteristic. + * + * @return TRUE if CCCD handle was found, FALSE otherwise. + */ +static bool inp_rep_cccd_identify(ble_hids_t * p_hids, + uint16_t handle, + ble_hids_char_id_t * p_char_id) +{ + uint8_t i; + + for (i = 0; i < p_hids->inp_rep_count; i++) + { + if (handle == p_hids->inp_rep_array[i].char_handles.cccd_handle) + { + *p_char_id = make_char_id(BLE_UUID_REPORT_CHAR, BLE_HIDS_REP_TYPE_INPUT, i); + return true; + } + } + + return false; +} + + +/**@brief Function for finding the Characteristic Id of a characteristic corresponding to a value handle. + * + * @param[in] p_hids HID Service structure. + * @param[in] handle Handle to search for. + * @param[out] p_char_id Id of report characteristic. + * @param[out] p_context_offset Pointer to offset to the report data within the host data. + * @param[out] p_rep_max_len Pointer to maximum report length. + * + * @return TRUE if value handle was found, FALSE otherwise. + */ +static bool rep_value_identify(ble_hids_t * p_hids, + uint16_t handle, + ble_hids_char_id_t * p_char_id, + uint16_t * p_context_offset, + uint16_t * p_rep_max_len) +{ + uint8_t i; + + /* Initialize the offset with size of non-report-related data */ + *p_context_offset = sizeof(ble_hids_client_context_t) + BOOT_KB_INPUT_REPORT_MAX_SIZE + + BOOT_KB_OUTPUT_REPORT_MAX_SIZE + BOOT_MOUSE_INPUT_REPORT_MAX_SIZE; + + if (p_hids->p_inp_rep_init_array != NULL) + { + for (i = 0; i < p_hids->inp_rep_count; i++) + { + if (handle == p_hids->inp_rep_array[i].char_handles.value_handle) + { + *p_char_id = make_char_id(BLE_UUID_REPORT_CHAR, BLE_HIDS_REP_TYPE_INPUT, i); + *p_rep_max_len = p_hids->p_inp_rep_init_array[i].max_len; + return true; + } + *p_context_offset += p_hids->p_inp_rep_init_array[i].max_len; + } + } + if (p_hids->p_outp_rep_init_array != NULL) + { + for (i = 0; i < p_hids->outp_rep_count; i++) + { + if (handle == p_hids->outp_rep_array[i].char_handles.value_handle) + { + *p_char_id = make_char_id(BLE_UUID_REPORT_CHAR, BLE_HIDS_REP_TYPE_OUTPUT, i); + *p_rep_max_len = p_hids->p_outp_rep_init_array[i].max_len; + return true; + } + *p_context_offset += p_hids->p_outp_rep_init_array[i].max_len; + } + } + if (p_hids->p_feature_rep_init_array != NULL) + { + for (i = 0; i < p_hids->feature_rep_count; i++) + { + if (handle == p_hids->feature_rep_array[i].char_handles.value_handle) + { + *p_char_id = make_char_id(BLE_UUID_REPORT_CHAR, BLE_HIDS_REP_TYPE_FEATURE, i); + *p_rep_max_len = p_hids->p_feature_rep_init_array[i].max_len; + return true; + } + *p_context_offset += p_hids->p_feature_rep_init_array[i].max_len; + } + } + + return false; +} + + +/**@brief Function for handling the Write event. + * + * @param[in] p_hids HID Service structure. + * @param[in] p_ble_evt Event received from the BLE stack. + */ +static void on_write(ble_hids_t * p_hids, ble_evt_t const * p_ble_evt) +{ + ble_hids_char_id_t char_id; + ble_gatts_evt_write_t const * p_evt_write = &p_ble_evt->evt.gatts_evt.params.write; + uint16_t rep_data_offset = sizeof(ble_hids_client_context_t); + uint16_t max_rep_len = 0; + + if (p_evt_write->handle == p_hids->hid_control_point_handles.value_handle) + { + on_control_point_write(p_hids, p_ble_evt); + } + else if (p_evt_write->handle == p_hids->protocol_mode_handles.value_handle) + { + on_protocol_mode_write(p_hids, p_ble_evt); + } + else if (p_evt_write->handle == p_hids->boot_kb_inp_rep_handles.cccd_handle) + { + char_id = make_char_id(BLE_UUID_BOOT_KEYBOARD_INPUT_REPORT_CHAR, 0, 0); + on_report_cccd_write(p_hids, &char_id, p_ble_evt); + } + else if (p_evt_write->handle == p_hids->boot_kb_inp_rep_handles.value_handle) + { + char_id = make_char_id(BLE_UUID_BOOT_KEYBOARD_INPUT_REPORT_CHAR, 0, 0); + max_rep_len = BOOT_KB_INPUT_REPORT_MAX_SIZE; + on_report_value_write(p_hids, p_ble_evt, &char_id, rep_data_offset, max_rep_len); + } + else if (p_evt_write->handle == p_hids->boot_kb_outp_rep_handles.value_handle) + { + char_id = make_char_id(BLE_UUID_BOOT_KEYBOARD_OUTPUT_REPORT_CHAR, 0, 0); + rep_data_offset += BOOT_KB_INPUT_REPORT_MAX_SIZE; + max_rep_len = BOOT_KB_OUTPUT_REPORT_MAX_SIZE; + on_report_value_write(p_hids, p_ble_evt, &char_id, rep_data_offset, max_rep_len); + } + else if (p_evt_write->handle == p_hids->boot_mouse_inp_rep_handles.cccd_handle) + { + char_id = make_char_id(BLE_UUID_BOOT_MOUSE_INPUT_REPORT_CHAR, 0, 0); + on_report_cccd_write(p_hids, &char_id, p_ble_evt); + } + else if (p_evt_write->handle == p_hids->boot_mouse_inp_rep_handles.value_handle) + { + char_id = make_char_id(BLE_UUID_BOOT_MOUSE_INPUT_REPORT_CHAR, 0, 0); + rep_data_offset += BOOT_KB_INPUT_REPORT_MAX_SIZE + BOOT_KB_OUTPUT_REPORT_MAX_SIZE; + max_rep_len = BOOT_MOUSE_INPUT_REPORT_MAX_SIZE; + on_report_value_write(p_hids, p_ble_evt, &char_id, rep_data_offset, max_rep_len); + } + else if (inp_rep_cccd_identify(p_hids, p_evt_write->handle, &char_id)) + { + on_report_cccd_write(p_hids, &char_id, p_ble_evt); + } + else if (rep_value_identify(p_hids, + p_evt_write->handle, + &char_id, + &rep_data_offset, + &max_rep_len)) + { + on_report_value_write(p_hids, p_ble_evt, &char_id, rep_data_offset, max_rep_len); + } + else + { + // No implementation needed. + } +} + + +/**@brief Read/write authorize request event handler. + * + * @param[in] p_hids HID Service structure. + * @param[in] p_ble_evt Event received from the BLE stack. + */ +static void on_rw_authorize_request(ble_hids_t * p_hids, ble_evt_t const * p_ble_evt) +{ + ble_gatts_evt_rw_authorize_request_t const * evt_rw_auth = + &p_ble_evt->evt.gatts_evt.params.authorize_request; + + ble_hids_char_id_t char_id; + uint16_t rep_data_offset = sizeof(ble_hids_client_context_t); + uint16_t max_rep_len = 0; + + if (evt_rw_auth->type != BLE_GATTS_AUTHORIZE_TYPE_READ) + { + // Unexpected operation + return; + } + + /* Update SD GATTS values of appropriate host before SD sends the Read Response */ + if (evt_rw_auth->request.read.handle == p_hids->protocol_mode_handles.value_handle) + { + on_protocol_mode_read_auth(p_hids, p_ble_evt); + } + else if (evt_rw_auth->request.read.handle == p_hids->boot_kb_inp_rep_handles.value_handle) + { + char_id = make_char_id(BLE_UUID_BOOT_KEYBOARD_INPUT_REPORT_CHAR, 0, 0); + max_rep_len = BOOT_KB_INPUT_REPORT_MAX_SIZE; + on_report_value_read_auth(p_hids, &char_id, p_ble_evt, rep_data_offset, max_rep_len); + } + else if (evt_rw_auth->request.read.handle == p_hids->boot_kb_outp_rep_handles.value_handle) + { + char_id = make_char_id(BLE_UUID_BOOT_KEYBOARD_OUTPUT_REPORT_CHAR, 0, 0); + rep_data_offset += BOOT_KB_INPUT_REPORT_MAX_SIZE; + max_rep_len = BOOT_KB_OUTPUT_REPORT_MAX_SIZE; + on_report_value_read_auth(p_hids, &char_id, p_ble_evt, rep_data_offset, max_rep_len); + } + else if (evt_rw_auth->request.read.handle == p_hids->boot_mouse_inp_rep_handles.value_handle) + { + char_id = make_char_id(BLE_UUID_BOOT_MOUSE_INPUT_REPORT_CHAR, 0, 0); + rep_data_offset += BOOT_KB_INPUT_REPORT_MAX_SIZE + BOOT_KB_OUTPUT_REPORT_MAX_SIZE; + max_rep_len = BOOT_MOUSE_INPUT_REPORT_MAX_SIZE; + on_report_value_read_auth(p_hids, &char_id, p_ble_evt, rep_data_offset, max_rep_len); + } + else if (rep_value_identify(p_hids, + evt_rw_auth->request.read.handle, + &char_id, + &rep_data_offset, + &max_rep_len)) + { + on_report_value_read_auth(p_hids, &char_id, p_ble_evt, rep_data_offset, max_rep_len); + } +} + + +void ble_hids_on_ble_evt(ble_evt_t const * p_ble_evt, void * p_context) +{ + ble_hids_t * p_hids = (ble_hids_t *) p_context; + + switch (p_ble_evt->header.evt_id) + { + case BLE_GAP_EVT_CONNECTED: + on_connect(p_hids, p_ble_evt); + break; + + case BLE_GATTS_EVT_WRITE: + on_write(p_hids, p_ble_evt); + break; + + case BLE_GATTS_EVT_RW_AUTHORIZE_REQUEST: + on_rw_authorize_request(p_hids, p_ble_evt); + break; + + default: + // No implementation needed. + break; + } +} + + +/**@brief Function for adding Protocol Mode characteristics. + * + * @param[in] p_hids HID Service structure. + * @param[in] p_sec_mode Characteristic security settings. + * + * @return NRF_SUCCESS on success, otherwise an error code. + */ +static uint32_t protocol_mode_char_add(ble_hids_t * p_hids, + const ble_srv_security_mode_t * p_sec_mode) +{ + 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; + uint8_t initial_protocol_mode; + + memset(&char_md, 0, sizeof(char_md)); + + char_md.char_props.read = 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_BLE_ASSIGN(ble_uuid, BLE_UUID_PROTOCOL_MODE_CHAR); + + memset(&attr_md, 0, sizeof(attr_md)); + + attr_md.read_perm = p_sec_mode->read_perm; + attr_md.write_perm = p_sec_mode->write_perm; + attr_md.vloc = BLE_GATTS_VLOC_STACK; + attr_md.rd_auth = 1; + attr_md.wr_auth = 0; + attr_md.vlen = 0; + + memset(&attr_char_value, 0, sizeof(attr_char_value)); + + initial_protocol_mode = DEFAULT_PROTOCOL_MODE; + + 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 = sizeof(uint8_t); + attr_char_value.p_value = &initial_protocol_mode; + + return sd_ble_gatts_characteristic_add(p_hids->service_handle, + &char_md, + &attr_char_value, + &p_hids->protocol_mode_handles); +} + + +/**@brief Function for adding report characteristics. + * + * @param[in] p_hids HID Service structure. + * @param[in] p_properties Report characteristic properties. + * @param[in] max_len Maximum length of report value. + * @param[in] p_rep_ref Report Reference descriptor. + * @param[in] p_rep_ref_attr_md Characteristic security settings. + * @param[in] is_read_resp Characteristic read authorization. + * @param[out] p_rep_char Handles of new characteristic. + * + * @return NRF_SUCCESS on success, otherwise an error code. + */ +static uint32_t rep_char_add(ble_hids_t * p_hids, + ble_gatt_char_props_t * p_properties, + uint16_t max_len, + ble_srv_report_ref_t const * p_rep_ref, + ble_srv_cccd_security_mode_t const * p_rep_ref_attr_md, + bool is_read_resp, + ble_hids_rep_char_t * p_rep_char) +{ + uint32_t err_code; + 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; + uint8_t encoded_rep_ref[BLE_SRV_ENCODED_REPORT_REF_LEN]; + + // Add Report characteristic + if (p_properties->notify) + { + memset(&cccd_md, 0, sizeof(cccd_md)); + BLE_GAP_CONN_SEC_MODE_SET_OPEN(&cccd_md.read_perm); + cccd_md.write_perm = p_rep_ref_attr_md->cccd_write_perm; + cccd_md.vloc = BLE_GATTS_VLOC_STACK; + } + + memset(&char_md, 0, sizeof(char_md)); + + char_md.char_props = *p_properties; + 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 = (p_properties->notify) ? &cccd_md : NULL; + char_md.p_sccd_md = NULL; + + BLE_UUID_BLE_ASSIGN(ble_uuid, BLE_UUID_REPORT_CHAR); + + memset(&attr_md, 0, sizeof(attr_md)); + + attr_md.read_perm = p_rep_ref_attr_md->read_perm; + attr_md.write_perm = p_rep_ref_attr_md->write_perm; + attr_md.vloc = BLE_GATTS_VLOC_STACK; + attr_md.rd_auth = is_read_resp ? 1 : 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 = 0; + attr_char_value.init_offs = 0; + attr_char_value.max_len = max_len; + attr_char_value.p_value = NULL; + + err_code = sd_ble_gatts_characteristic_add(p_hids->service_handle, + &char_md, + &attr_char_value, + &p_rep_char->char_handles); + if (err_code != NRF_SUCCESS) + { + return err_code; + } + + // Add Report Reference descriptor + BLE_UUID_BLE_ASSIGN(ble_uuid, BLE_UUID_REPORT_REF_DESCR); + + memset(&attr_md, 0, sizeof(attr_md)); + + attr_md.read_perm = p_rep_ref_attr_md->read_perm; + attr_md.write_perm = p_rep_ref_attr_md->write_perm; + attr_md.vloc = BLE_GATTS_VLOC_STACK; + attr_md.rd_auth = 0; + attr_md.wr_auth = 0; + attr_md.vlen = 0; + + 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 = ble_srv_report_ref_encode(encoded_rep_ref, p_rep_ref); + attr_char_value.init_offs = 0; + attr_char_value.max_len = attr_char_value.init_len; + attr_char_value.p_value = encoded_rep_ref; + + return sd_ble_gatts_descriptor_add(p_rep_char->char_handles.value_handle, + &attr_char_value, + &p_rep_char->ref_handle); +} + + +/**@brief Function for adding Report Map characteristics. + * + * @param[in] p_hids HID Service structure. + * @param[in] p_hids_init Service initialization structure. + * + * @return NRF_SUCCESS on success, otherwise an error code. + */ +static uint32_t rep_map_char_add(ble_hids_t * p_hids, const ble_hids_init_t * p_hids_init) +{ + uint32_t err_code; + 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; + + // Add Report Map characteristic + memset(&char_md, 0, sizeof(char_md)); + + char_md.char_props.read = 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_BLE_ASSIGN(ble_uuid, BLE_UUID_REPORT_MAP_CHAR); + + memset(&attr_md, 0, sizeof(attr_md)); + + attr_md.read_perm = p_hids_init->rep_map.security_mode.read_perm; + attr_md.write_perm = p_hids_init->rep_map.security_mode.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 = p_hids_init->rep_map.data_len; + attr_char_value.init_offs = 0; + attr_char_value.max_len = p_hids_init->rep_map.data_len; + attr_char_value.p_value = p_hids_init->rep_map.p_data; + + err_code = sd_ble_gatts_characteristic_add(p_hids->service_handle, + &char_md, + &attr_char_value, + &p_hids->rep_map_handles); + if (err_code != NRF_SUCCESS) + { + return err_code; + } + + if (p_hids_init->rep_map.ext_rep_ref_num != 0 && p_hids_init->rep_map.p_ext_rep_ref == NULL) + { + return NRF_ERROR_INVALID_PARAM; + } + + for (int i = 0; i < p_hids_init->rep_map.ext_rep_ref_num; ++i) + { + uint8_t encoded_rep_ref[sizeof(ble_uuid128_t)]; + uint8_t encoded_rep_ref_len; + + // Add External Report Reference descriptor + BLE_UUID_BLE_ASSIGN(ble_uuid, BLE_UUID_EXTERNAL_REPORT_REF_DESCR); + + memset(&attr_md, 0, sizeof(attr_md)); + + BLE_GAP_CONN_SEC_MODE_SET_ENC_NO_MITM(&attr_md.read_perm); + BLE_GAP_CONN_SEC_MODE_SET_NO_ACCESS(&attr_md.write_perm); + + attr_md.vloc = BLE_GATTS_VLOC_STACK; + attr_md.rd_auth = 0; + attr_md.wr_auth = 0; + attr_md.vlen = 0; + + err_code = sd_ble_uuid_encode(&p_hids_init->rep_map.p_ext_rep_ref[i], + &encoded_rep_ref_len, + encoded_rep_ref); + if (err_code != NRF_SUCCESS) + { + return err_code; + } + + 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 = encoded_rep_ref_len; + attr_char_value.init_offs = 0; + attr_char_value.max_len = attr_char_value.init_len; + attr_char_value.p_value = encoded_rep_ref; + + err_code = sd_ble_gatts_descriptor_add(p_hids->rep_map_handles.value_handle, + &attr_char_value, + &p_hids->rep_map_ext_rep_ref_handle); + if (err_code != NRF_SUCCESS) + { + return err_code; + } + } + + return NRF_SUCCESS; +} + + +/**@brief Function for adding Input Report characteristics. + * + * @param[in] p_hids HID Service structure. + * @param[in] uuid UUID of report characteristic to be added. + * @param[in] max_data_len Maximum length of report value. + * @param[in] p_sec_mode Characteristic security settings. + * @param[out] p_char_handles Handles of new characteristic. + * + * @return NRF_SUCCESS on success, otherwise an error code. + */ +static uint32_t boot_inp_rep_char_add(ble_hids_t * p_hids, + uint16_t uuid, + uint16_t max_data_len, + const ble_srv_cccd_security_mode_t * p_sec_mode, + ble_gatts_char_handles_t * p_char_handles) +{ + 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); + cccd_md.write_perm = p_sec_mode->cccd_write_perm; + cccd_md.vloc = BLE_GATTS_VLOC_STACK; + + memset(&char_md, 0, sizeof(char_md)); + + char_md.char_props.read = 1; + char_md.char_props.write = (p_sec_mode->write_perm.sm) ? 1 : 0; + 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_BLE_ASSIGN(ble_uuid, uuid); + + memset(&attr_md, 0, sizeof(attr_md)); + + attr_md.read_perm = p_sec_mode->read_perm; + attr_md.write_perm = p_sec_mode->write_perm; + attr_md.vloc = BLE_GATTS_VLOC_STACK; + attr_md.rd_auth = 1; + attr_md.wr_auth = 0; + attr_md.vlen = 0; + + 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 = 0; + attr_char_value.init_offs = 0; + attr_char_value.max_len = max_data_len; + attr_char_value.p_value = NULL; + + return sd_ble_gatts_characteristic_add(p_hids->service_handle, + &char_md, + &attr_char_value, + p_char_handles); +} + + +/**@brief Function for adding Boot Keyboard Output Report characteristics. + * + * @param[in] p_hids HID Service structure. + * @param[in] p_hids_init Service initialization structure. + * + * @return NRF_SUCCESS on success, otherwise an error code. + */ +static uint32_t boot_kb_outp_rep_char_add(ble_hids_t * p_hids, const ble_hids_init_t * p_hids_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.read = 1; + 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_BLE_ASSIGN(ble_uuid, BLE_UUID_BOOT_KEYBOARD_OUTPUT_REPORT_CHAR); + + memset(&attr_md, 0, sizeof(attr_md)); + + attr_md.read_perm = p_hids_init->security_mode_boot_kb_outp_rep.read_perm; + attr_md.write_perm = p_hids_init->security_mode_boot_kb_outp_rep.write_perm; + attr_md.vloc = BLE_GATTS_VLOC_STACK; + attr_md.rd_auth = 1; + attr_md.wr_auth = 0; + attr_md.vlen = 0; + + 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 = 0; + attr_char_value.init_offs = 0; + attr_char_value.max_len = BOOT_KB_OUTPUT_REPORT_MAX_SIZE; + attr_char_value.p_value = NULL; + + return sd_ble_gatts_characteristic_add(p_hids->service_handle, &char_md, &attr_char_value, + &p_hids->boot_kb_outp_rep_handles); +} + + +/**@brief Function for encoding a HID Information characteristic value. + * + * @param[out] p_encoded_buffer Buffer where the encoded data will be written. + * @param[in] p_hid_information Measurement to be encoded. + * + * @return Size of encoded data. + */ +static uint8_t encode_hid_information(uint8_t * p_encoded_buffer, + const ble_hids_hid_information_t * p_hid_information) +{ + uint8_t len = uint16_encode(p_hid_information->bcd_hid, p_encoded_buffer); + + p_encoded_buffer[len++] = p_hid_information->b_country_code; + p_encoded_buffer[len++] = p_hid_information->flags; + + APP_ERROR_CHECK_BOOL(len == ENCODED_HID_INFORMATION_LEN); + + return len; +} + + +/**@brief Function for adding HID Information characteristics. + * + * @param[in] p_hids HID Service structure. + * @param[in] p_hids_init Service initialization structure. + * + * @return NRF_SUCCESS on success, otherwise an error code. + */ +static uint32_t hid_information_char_add(ble_hids_t * p_hids, const ble_hids_init_t * p_hids_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; + uint8_t encoded_hid_information[ENCODED_HID_INFORMATION_LEN]; + uint8_t hid_info_len; + + memset(&char_md, 0, sizeof(char_md)); + + char_md.char_props.read = 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_BLE_ASSIGN(ble_uuid, BLE_UUID_HID_INFORMATION_CHAR); + + memset(&attr_md, 0, sizeof(attr_md)); + + attr_md.read_perm = p_hids_init->hid_information.security_mode.read_perm; + attr_md.write_perm = p_hids_init->hid_information.security_mode.write_perm; + attr_md.vloc = BLE_GATTS_VLOC_STACK; + attr_md.rd_auth = 0; + attr_md.wr_auth = 0; + attr_md.vlen = 0; + + hid_info_len = encode_hid_information(encoded_hid_information, &p_hids_init->hid_information); + + 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 = hid_info_len; + attr_char_value.init_offs = 0; + attr_char_value.max_len = attr_char_value.init_len; + attr_char_value.p_value = encoded_hid_information; + + return sd_ble_gatts_characteristic_add(p_hids->service_handle, &char_md, + &attr_char_value, + &p_hids->hid_information_handles); +} + + +/**@brief Function for adding HID Control Point characteristics. + * + * @param[in] p_hids HID Service structure. + * @param[in] p_sec_mode Characteristic security settings. + * + * @return NRF_SUCCESS on success, otherwise an error code. + */ +static uint32_t hid_control_point_char_add(ble_hids_t * p_hids, + const ble_srv_security_mode_t * p_sec_mode) +{ + 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; + uint8_t initial_hid_control_point; + + memset(&char_md, 0, sizeof(char_md)); + + 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_BLE_ASSIGN(ble_uuid, BLE_UUID_HID_CONTROL_POINT_CHAR); + + memset(&attr_md, 0, sizeof(attr_md)); + + attr_md.read_perm = p_sec_mode->read_perm; + attr_md.write_perm = p_sec_mode->write_perm; + attr_md.vloc = BLE_GATTS_VLOC_STACK; + attr_md.rd_auth = 0; + attr_md.wr_auth = 0; + attr_md.vlen = 0; + + initial_hid_control_point = INITIAL_VALUE_HID_CONTROL_POINT; + + 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 = sizeof(uint8_t); + attr_char_value.p_value = &initial_hid_control_point; + + return sd_ble_gatts_characteristic_add(p_hids->service_handle, &char_md, + &attr_char_value, + &p_hids->hid_control_point_handles); +} + + +/**@brief Function for adding input report characteristics. + * + * @param[in] p_hids HID Service structure. + * @param[in] p_hids_init Service initialization structure. + * + * @return NRF_SUCCESS on success, otherwise an error code. + */ +static uint32_t inp_rep_characteristics_add(ble_hids_t * p_hids, + const ble_hids_init_t * p_hids_init) +{ + if ((p_hids_init->inp_rep_count != 0) && (p_hids_init->p_inp_rep_array != NULL)) + { + uint8_t i; + + for (i = 0; i < p_hids_init->inp_rep_count; i++) + { + uint32_t err_code; + ble_hids_inp_rep_init_t const * p_rep_init = &p_hids_init->p_inp_rep_array[i]; + ble_gatt_char_props_t properties; + + memset(&properties, 0, sizeof(properties)); + + properties.read = true; + properties.write = p_rep_init->security_mode.write_perm.sm ? 1 : 0; + properties.notify = true; + + err_code = rep_char_add(p_hids, + &properties, + p_rep_init->max_len, + &p_rep_init->rep_ref, + &p_rep_init->security_mode, + 1, + &p_hids->inp_rep_array[i]); + if (err_code != NRF_SUCCESS) + { + return err_code; + } + } + } + + return NRF_SUCCESS; +} + + +/**@brief Function for adding output report characteristics. + * + * @param[in] p_hids HID Service structure. + * @param[in] p_hids_init Service initialization structure. + * + * @return NRF_SUCCESS on success, otherwise an error code. + */ +static uint32_t outp_rep_characteristics_add(ble_hids_t * p_hids, + const ble_hids_init_t * p_hids_init) +{ + if ((p_hids_init->outp_rep_count != 0) && (p_hids_init->p_outp_rep_array != NULL)) + { + uint8_t i; + + for (i = 0; i < p_hids_init->outp_rep_count; i++) + { + uint32_t err_code; + ble_hids_outp_rep_init_t const * p_rep_init = &p_hids_init->p_outp_rep_array[i]; + ble_gatt_char_props_t properties; + + memset(&properties, 0, sizeof(properties)); + + properties.read = true; + properties.write = true; + properties.write_wo_resp = true; + + err_code = rep_char_add(p_hids, + &properties, + p_rep_init->max_len, + &p_rep_init->rep_ref, + &p_rep_init->security_mode, + 1, + &p_hids->outp_rep_array[i]); + if (err_code != NRF_SUCCESS) + { + return err_code; + } + } + } + + return NRF_SUCCESS; +} + + +/**@brief Function for adding feature report characteristics. + * + * @param[in] p_hids HID Service structure. + * @param[in] p_hids_init Service initialization structure. + * + * @return NRF_SUCCESS on success, otherwise an error code. + */ +static uint32_t feature_rep_characteristics_add(ble_hids_t * p_hids, + const ble_hids_init_t * p_hids_init) +{ + if ((p_hids_init->feature_rep_count != 0) && (p_hids_init->p_feature_rep_array != NULL)) + { + uint8_t i; + + for (i = 0; i < p_hids_init->feature_rep_count; i++) + { + uint32_t err_code; + ble_hids_feature_rep_init_t const * p_rep_init = &p_hids_init->p_feature_rep_array[i]; + ble_gatt_char_props_t properties; + + memset(&properties, 0, sizeof(properties)); + + properties.read = true; + properties.write = true; + + err_code = rep_char_add(p_hids, + &properties, + p_rep_init->max_len, + &p_rep_init->rep_ref, + &p_rep_init->security_mode, + 1, + &p_hids->feature_rep_array[i]); + if (err_code != NRF_SUCCESS) + { + return err_code; + } + } + } + + return NRF_SUCCESS; +} + + +/**@brief Function for adding included services. + * + * @param[in] p_hids HID Service structure. + * @param[in] p_hids_init Service initialization structure. + * + * @return NRF_SUCCESS on success, otherwise an error code. + */ +static uint32_t includes_add(ble_hids_t * p_hids, const ble_hids_init_t * p_hids_init) +{ + uint32_t err_code; + uint8_t i; + uint16_t unused_include_handle; + + for (i = 0; i < p_hids_init->included_services_count; i++) + { + err_code = sd_ble_gatts_include_add(p_hids->service_handle, + p_hids_init->p_included_services_array[i], + &unused_include_handle); + if (err_code != NRF_SUCCESS) + { + return err_code; + } + } + + return NRF_SUCCESS; +} + + +uint32_t ble_hids_init(ble_hids_t * p_hids, const ble_hids_init_t * p_hids_init) +{ + uint32_t err_code; + ble_uuid_t ble_uuid; + + if ((p_hids_init->inp_rep_count > BLE_HIDS_MAX_INPUT_REP) || + (p_hids_init->outp_rep_count > BLE_HIDS_MAX_OUTPUT_REP) || + (p_hids_init->feature_rep_count > BLE_HIDS_MAX_FEATURE_REP) + ) + { + return NRF_ERROR_INVALID_PARAM; + } + + // Initialize service structure. + p_hids->evt_handler = p_hids_init->evt_handler; + p_hids->error_handler = p_hids_init->error_handler; + p_hids->inp_rep_count = p_hids_init->inp_rep_count; + p_hids->outp_rep_count = p_hids_init->outp_rep_count; + p_hids->feature_rep_count = p_hids_init->feature_rep_count; + + // Add service. + BLE_UUID_BLE_ASSIGN(ble_uuid, BLE_UUID_HUMAN_INTERFACE_DEVICE_SERVICE); + + err_code = sd_ble_gatts_service_add(BLE_GATTS_SRVC_TYPE_PRIMARY, + &ble_uuid, + &p_hids->service_handle); + if (err_code != NRF_SUCCESS) + { + return err_code; + } + + // Add includes. + err_code = includes_add(p_hids, p_hids_init); + if (err_code != NRF_SUCCESS) + { + return err_code; + } + + if (p_hids_init->is_kb || p_hids_init->is_mouse) + { + // Add Protocol Mode characteristic. + err_code = protocol_mode_char_add(p_hids, &p_hids_init->security_mode_protocol); + if (err_code != NRF_SUCCESS) + { + return err_code; + } + } + + // Add Input Report characteristics (if any). + err_code = inp_rep_characteristics_add(p_hids, p_hids_init); + if (err_code != NRF_SUCCESS) + { + return err_code; + } + + // Add Output Report characteristics (if any). + err_code = outp_rep_characteristics_add(p_hids, p_hids_init); + if (err_code != NRF_SUCCESS) + { + return err_code; + } + + // Add Feature Report characteristic (if any). + err_code = feature_rep_characteristics_add(p_hids, p_hids_init); + if (err_code != NRF_SUCCESS) + { + return err_code; + } + + // Add Report Map characteristic. + err_code = rep_map_char_add(p_hids, p_hids_init); + if (err_code != NRF_SUCCESS) + { + return err_code; + } + + if (p_hids_init->is_kb) + { + // Add Boot Keyboard Input Report characteristic. + err_code = boot_inp_rep_char_add(p_hids, + BLE_UUID_BOOT_KEYBOARD_INPUT_REPORT_CHAR, + BOOT_KB_INPUT_REPORT_MAX_SIZE, + &p_hids_init->security_mode_boot_kb_inp_rep, + &p_hids->boot_kb_inp_rep_handles); + if (err_code != NRF_SUCCESS) + { + return err_code; + } + + // Add Boot Keyboard Output Report characteristic. + err_code = boot_kb_outp_rep_char_add(p_hids, p_hids_init); + if (err_code != NRF_SUCCESS) + { + return err_code; + } + } + + if (p_hids_init->is_mouse) + { + // Add Boot Mouse Input Report characteristic. + err_code = boot_inp_rep_char_add(p_hids, + BLE_UUID_BOOT_MOUSE_INPUT_REPORT_CHAR, + BOOT_MOUSE_INPUT_REPORT_MAX_SIZE, + &p_hids_init->security_mode_boot_mouse_inp_rep, + &p_hids->boot_mouse_inp_rep_handles); + if (err_code != NRF_SUCCESS) + { + return err_code; + } + } + + // Add HID Information characteristic. + err_code = hid_information_char_add(p_hids, p_hids_init); + if (err_code != NRF_SUCCESS) + { + return err_code; + } + + // Add HID Control Point characteristic. + err_code = hid_control_point_char_add(p_hids, &p_hids_init->security_mode_ctrl_point); + if (err_code != NRF_SUCCESS) + { + return err_code; + } + + // Set pointers to user-defined report arrays + p_hids->p_inp_rep_init_array = p_hids_init->p_inp_rep_array; + p_hids->p_outp_rep_init_array = p_hids_init->p_outp_rep_array; + p_hids->p_feature_rep_init_array = p_hids_init->p_feature_rep_array; + + return err_code; +} + + +uint32_t ble_hids_inp_rep_send(ble_hids_t * p_hids, + uint8_t rep_index, + uint16_t len, + uint8_t * p_data, + uint16_t conn_handle) +{ + uint32_t err_code; + + if (rep_index < p_hids->inp_rep_count) + { + ble_hids_rep_char_t * p_rep_char = &p_hids->inp_rep_array[rep_index]; + + if (conn_handle != BLE_CONN_HANDLE_INVALID) + { + ble_gatts_hvx_params_t hvx_params; + uint8_t index = 0; + uint16_t hvx_len = len; + uint8_t * p_host_rep_data; + + err_code = blcm_link_ctx_get(p_hids->p_link_ctx_storage, + conn_handle, + (void *) &p_host_rep_data); + VERIFY_SUCCESS(err_code); + + if (p_host_rep_data != NULL) + { + p_host_rep_data += sizeof(ble_hids_client_context_t) + BOOT_KB_INPUT_REPORT_MAX_SIZE + + BOOT_KB_OUTPUT_REPORT_MAX_SIZE + BOOT_MOUSE_INPUT_REPORT_MAX_SIZE; + } + else + { + return NRF_ERROR_NOT_FOUND; + } + + // Store the new report data in host's context + while (index < rep_index) + { + p_host_rep_data += p_hids->p_inp_rep_init_array[index].max_len; + ++index; + } + + if (len <= p_hids->p_inp_rep_init_array[rep_index].max_len) + { + memcpy(p_host_rep_data, p_data, len); + } + else + { + return NRF_ERROR_DATA_SIZE; + } + + // Notify host + memset(&hvx_params, 0, sizeof(hvx_params)); + + hvx_params.handle = p_rep_char->char_handles.value_handle; + hvx_params.type = BLE_GATT_HVX_NOTIFICATION; + hvx_params.offset = 0; + hvx_params.p_len = &hvx_len; + hvx_params.p_data = p_data; + + err_code = sd_ble_gatts_hvx(conn_handle, &hvx_params); + if ((err_code == NRF_SUCCESS) && (hvx_len != len)) + { + err_code = NRF_ERROR_DATA_SIZE; + } + } + else + { + err_code = NRF_ERROR_INVALID_STATE; + } + } + else + { + err_code = NRF_ERROR_INVALID_PARAM; + } + + return err_code; +} + + +uint32_t ble_hids_boot_kb_inp_rep_send(ble_hids_t * p_hids, + uint16_t len, + uint8_t * p_data, + uint16_t conn_handle) +{ + uint32_t err_code; + + if (conn_handle != BLE_CONN_HANDLE_INVALID) + { + ble_gatts_hvx_params_t hvx_params; + uint16_t hvx_len = len; + uint8_t * p_host_rep_data; + + err_code = blcm_link_ctx_get(p_hids->p_link_ctx_storage, + conn_handle, + (void *) &p_host_rep_data); + VERIFY_SUCCESS(err_code); + + if (p_host_rep_data != NULL) + { + p_host_rep_data += sizeof(ble_hids_client_context_t); + } + else + { + return NRF_ERROR_NOT_FOUND; + } + + // Store the new value in the host's context + if (len <= BOOT_KB_INPUT_REPORT_MAX_SIZE) + { + memcpy(p_host_rep_data, p_data, len); + } + + // Notify host + memset(&hvx_params, 0, sizeof(hvx_params)); + + hvx_params.handle = p_hids->boot_kb_inp_rep_handles.value_handle; + hvx_params.type = BLE_GATT_HVX_NOTIFICATION; + hvx_params.offset = 0; + hvx_params.p_len = &hvx_len; + hvx_params.p_data = p_data; + + err_code = sd_ble_gatts_hvx(conn_handle, &hvx_params); + if ((err_code == NRF_SUCCESS) && (hvx_len != len)) + { + err_code = NRF_ERROR_DATA_SIZE; + } + } + else + { + err_code = NRF_ERROR_INVALID_STATE; + } + + return err_code; +} + + +uint32_t ble_hids_boot_mouse_inp_rep_send(ble_hids_t * p_hids, + uint8_t buttons, + int8_t x_delta, + int8_t y_delta, + uint16_t optional_data_len, + uint8_t * p_optional_data, + uint16_t conn_handle) +{ + uint32_t err_code; + + if (conn_handle != BLE_CONN_HANDLE_INVALID) + { + uint16_t hvx_len = BOOT_MOUSE_INPUT_REPORT_MIN_SIZE + optional_data_len; + + if (hvx_len <= BOOT_MOUSE_INPUT_REPORT_MAX_SIZE) + { + uint8_t buffer[BOOT_MOUSE_INPUT_REPORT_MAX_SIZE]; + ble_gatts_hvx_params_t hvx_params; + uint8_t * p_host_rep_data; + + err_code = blcm_link_ctx_get(p_hids->p_link_ctx_storage, + conn_handle, + (void *) &p_host_rep_data); + VERIFY_SUCCESS(err_code); + + if (p_host_rep_data != NULL) + { + p_host_rep_data += sizeof(ble_hids_client_context_t) + BOOT_KB_INPUT_REPORT_MAX_SIZE + + BOOT_KB_OUTPUT_REPORT_MAX_SIZE; + } + else + { + return NRF_ERROR_NOT_FOUND; + } + + APP_ERROR_CHECK_BOOL(BOOT_MOUSE_INPUT_REPORT_MIN_SIZE == 3); + + // Build buffer + buffer[0] = buttons; + buffer[1] = (uint8_t)x_delta; + buffer[2] = (uint8_t)y_delta; + + if (optional_data_len > 0) + { + memcpy(&buffer[3], p_optional_data, optional_data_len); + } + + // Store the new value in the host's context + memcpy(p_host_rep_data, buffer, hvx_len); + + // Pass buffer to stack + memset(&hvx_params, 0, sizeof(hvx_params)); + + hvx_params.handle = p_hids->boot_mouse_inp_rep_handles.value_handle; + hvx_params.type = BLE_GATT_HVX_NOTIFICATION; + hvx_params.offset = 0; + hvx_params.p_len = &hvx_len; + hvx_params.p_data = buffer; + + err_code = sd_ble_gatts_hvx(conn_handle, &hvx_params); + if ((err_code == NRF_SUCCESS) && + (hvx_len != BOOT_MOUSE_INPUT_REPORT_MIN_SIZE + optional_data_len) + ) + { + err_code = NRF_ERROR_DATA_SIZE; + } + } + else + { + err_code = NRF_ERROR_DATA_SIZE; + } + } + else + { + err_code = NRF_ERROR_INVALID_STATE; + } + + return err_code; +} + + +uint32_t ble_hids_outp_rep_get(ble_hids_t * p_hids, + uint8_t rep_index, + uint16_t len, + uint8_t offset, + uint16_t conn_handle, + uint8_t * p_outp_rep) +{ + ret_code_t err_code; + uint8_t * p_rep_data; + + if (rep_index > p_hids->outp_rep_count) + { + return NRF_ERROR_INVALID_PARAM; + } + + err_code = blcm_link_ctx_get(p_hids->p_link_ctx_storage, + conn_handle, + (void *) &p_rep_data); + VERIFY_SUCCESS(err_code); + + if (p_rep_data != NULL) + { + uint8_t index; + p_rep_data += sizeof(ble_hids_client_context_t) + BOOT_KB_INPUT_REPORT_MAX_SIZE + + BOOT_KB_OUTPUT_REPORT_MAX_SIZE + BOOT_MOUSE_INPUT_REPORT_MAX_SIZE; + + for (index = 0; index < p_hids->inp_rep_count; index++) + { + p_rep_data += p_hids->p_inp_rep_init_array[index].max_len; + } + + for (index = 0; index < rep_index; index++) + { + p_rep_data += p_hids->p_outp_rep_init_array[index].max_len; + } + } + else + { + return NRF_ERROR_NOT_FOUND; + } + + // Copy the requested output report data + if (len + offset <= p_hids->p_outp_rep_init_array[rep_index].max_len) + { + memcpy(p_outp_rep, p_rep_data + offset, len); + } + else + { + return NRF_ERROR_INVALID_LENGTH; + } + + return NRF_SUCCESS; +} + + +/** + @} + */ +#endif // NRF_MODULE_ENABLED(BLE_HIDS) |