Hi,
I'm referring to -
1. Custom HID over GATT device
2. nRF51422 HID example modification
So for now, I just used the descriptor mentioned in above links. But "hello" is not getting printed on the notepad. Here is my code
#include <stdint.h>
#include <string.h>
#include "nordic_common.h"
#include "nrf.h"
#include "nrf_assert.h"
#include "app_error.h"
#include "ble.h"
#include "ble_err.h"
#include "ble_hci.h"
#include "ble_srv_common.h"
#include "ble_advertising.h"
#include "ble_advdata.h"
#include "ble_hids.h"
#include "ble_bas.h"
#include "ble_dis.h"
#include "ble_conn_params.h"
#include "sensorsim.h"
#include "bsp_btn_ble.h"
#include "app_scheduler.h"
#include "nrf_sdh.h"
#include "nrf_sdh_soc.h"
#include "nrf_sdh_ble.h"
#include "app_timer.h"
#include "peer_manager.h"
#include "fds.h"
#include "ble_conn_state.h"
#include "nrf_ble_gatt.h"
#include "nrf_ble_qwr.h"
#include "nrf_pwr_mgmt.h"
#include "nrf_log.h"
#include "nrf_log_ctrl.h"
#include "nrf_log_default_backends.h"
#define SHIFT_BUTTON_ID 1 /**< Button used as 'SHIFT' Key. */
#define DEVICE_NAME "Nordic_Keyboard" /**< Name of device. Will be included in the advertising data. */
#define MANUFACTURER_NAME "NordicSemiconductor" /**< Manufacturer. Will be passed to Device Information Service. */
#define APP_BLE_OBSERVER_PRIO 3 /**< Application's BLE observer priority. You shouldn't need to modify this value. */
#define APP_BLE_CONN_CFG_TAG 1 /**< A tag identifying the SoftDevice BLE configuration. */
#define BATTERY_LEVEL_MEAS_INTERVAL APP_TIMER_TICKS(2000) /**< Battery level measurement interval (ticks). */
#define MIN_BATTERY_LEVEL 81 /**< Minimum simulated battery level. */
#define MAX_BATTERY_LEVEL 100 /**< Maximum simulated battery level. */
#define BATTERY_LEVEL_INCREMENT 1 /**< Increment between each simulated battery level measurement. */
#define PNP_ID_VENDOR_ID_SOURCE 0x02 /**< Vendor ID Source. */
#define PNP_ID_VENDOR_ID 0x1915 /**< Vendor ID. */
#define PNP_ID_PRODUCT_ID 0xEEEE /**< Product ID. */
#define PNP_ID_PRODUCT_VERSION 0x0001 /**< Product Version. */
#define APP_ADV_FAST_INTERVAL 0x0028 /**< Fast advertising interval (in units of 0.625 ms. This value corresponds to 25 ms.). */
#define APP_ADV_SLOW_INTERVAL 0x0C80 /**< Slow advertising interval (in units of 0.625 ms. This value corrsponds to 2 seconds). */
#define APP_ADV_FAST_DURATION 3000 /**< The advertising duration of fast advertising in units of 10 milliseconds. */
#define APP_ADV_SLOW_DURATION 18000 /**< The advertising duration of slow advertising in units of 10 milliseconds. */
/*lint -emacro(524, MIN_CONN_INTERVAL) // Loss of precision */
#define MIN_CONN_INTERVAL MSEC_TO_UNITS(7.5, UNIT_1_25_MS) /**< Minimum connection interval (7.5 ms) */
#define MAX_CONN_INTERVAL MSEC_TO_UNITS(30, UNIT_1_25_MS) /**< Maximum connection interval (30 ms). */
#define SLAVE_LATENCY 6 /**< Slave latency. */
#define CONN_SUP_TIMEOUT MSEC_TO_UNITS(430, UNIT_10_MS) /**< Connection supervisory timeout (430 ms). */
#define FIRST_CONN_PARAMS_UPDATE_DELAY APP_TIMER_TICKS(5000) /**< Time from initiating event (connect or start of notification) to first time sd_ble_gap_conn_param_update is called (5 seconds). */
#define NEXT_CONN_PARAMS_UPDATE_DELAY APP_TIMER_TICKS(30000) /**< Time between each call to sd_ble_gap_conn_param_update after the first call (30 seconds). */
#define MAX_CONN_PARAMS_UPDATE_COUNT 3 /**< Number of attempts before giving up the connection parameter negotiation. */
#define SEC_PARAM_BOND 1 /**< Perform bonding. */
#define SEC_PARAM_MITM 0 /**< Man In The Middle protection not required. */
#define SEC_PARAM_LESC 0 /**< LE Secure Connections not enabled. */
#define SEC_PARAM_KEYPRESS 0 /**< Keypress notifications not enabled. */
#define SEC_PARAM_IO_CAPABILITIES BLE_GAP_IO_CAPS_NONE /**< No I/O capabilities. */
#define SEC_PARAM_OOB 0 /**< Out Of Band data not available. */
#define SEC_PARAM_MIN_KEY_SIZE 7 /**< Minimum encryption key size. */
#define SEC_PARAM_MAX_KEY_SIZE 16 /**< Maximum encryption key size. */
#define OUTPUT_REPORT_INDEX 0 /**< Index of Output Report. */
#define OUTPUT_REPORT_MAX_LEN 1//22 /**< Maximum length of Output Report. */
#define INPUT_REPORT_KEYS_INDEX 0 /**< Index of Input Report. */
#define OUTPUT_REPORT_BIT_MASK_CAPS_LOCK 0x02 /**< CAPS LOCK bit in Output Report (based on 'LED Page (0x08)' of the Universal Serial Bus HID Usage Tables). */
#define INPUT_REP_REF_ID 0 /**< Id of reference to Keyboard Input Report. */
#define OUTPUT_REP_REF_ID 0 /**< Id of reference to Keyboard Output Report. */
#define MAX_BUFFER_ENTRIES 5 /**< Number of elements that can be enqueued */
#define BASE_USB_HID_SPEC_VERSION 0x0101 /**< Version number of base USB HID Specification implemented by this application. */
#define INPUT_REPORT_KEYS_MAX_LEN 8//20 /**< Maximum length of the Input Report characteristic. */
#define DEAD_BEEF 0xDEADBEEF /**< Value used as error code on stack dump, can be used to identify stack location on stack unwind. */
#define SCHED_MAX_EVENT_DATA_SIZE APP_TIMER_SCHED_EVENT_DATA_SIZE /**< Maximum size of scheduler events. */
#ifdef SVCALL_AS_NORMAL_FUNCTION
#define SCHED_QUEUE_SIZE 20 /**< Maximum number of events in the scheduler queue. More is needed in case of Serialization. */
#else
#define SCHED_QUEUE_SIZE 10 /**< Maximum number of events in the scheduler queue. */
#endif
#define MODIFIER_KEY_POS 0 /**< Position of the modifier byte in the Input Report. */
#define SCAN_CODE_POS 2 /**< The start position of the key scan code in a HID Report. */
#define SHIFT_KEY_CODE 0x02 /**< Key code indicating the press of the Shift Key. */
#define MAX_KEYS_IN_ONE_REPORT (INPUT_REPORT_KEYS_MAX_LEN - SCAN_CODE_POS)/**< Maximum number of key presses that can be sent in one Input Report. */
/**Buffer queue access macros*/
/** Initialization of buffer list */
#define BUFFER_LIST_INIT() \
do \
{ \
buffer_list.rp = 0; \
buffer_list.wp = 0; \
buffer_list.count = 0; \
} while (0)
/** Provide status of data list is full or not */
#define BUFFER_LIST_FULL() \
((MAX_BUFFER_ENTRIES == buffer_list.count - 1) ? true : false) // REMOVED - 1
/** Provides status of buffer list is empty or not */
#define BUFFER_LIST_EMPTY() \
((0 == buffer_list.count) ? true : false)
#define BUFFER_ELEMENT_INIT(i) \
do \
{ \
buffer_list.buffer[(i)].p_data = NULL; \
} while (0)
/** Abstracts buffer element */
typedef struct hid_key_buffer
{
uint8_t data_offset; /**< Max Data that can be buffered for all entries */
uint8_t data_len; /**< Total length of data */
uint8_t * p_data; /**< Scanned key pattern */
ble_hids_t * p_instance; /**< Identifies peer and service instance */
} buffer_entry_t;
STATIC_ASSERT(sizeof(buffer_entry_t) % 4 == 0);
/** Circular buffer list */
typedef struct
{
buffer_entry_t buffer[MAX_BUFFER_ENTRIES]; /**< Maximum number of entries that can enqueued in the list */
uint8_t rp; /**< Index to the read location */
uint8_t wp; /**< Index to write location */
uint8_t count; /**< Number of elements in the list */
} buffer_list_t;
STATIC_ASSERT(sizeof(buffer_list_t) % 4 == 0);
APP_TIMER_DEF(m_battery_timer_id); /**< Battery timer. */
BLE_HIDS_DEF(m_hids, /**< Structure used to identify the HID service. */
NRF_SDH_BLE_TOTAL_LINK_COUNT,
INPUT_REPORT_KEYS_MAX_LEN,
OUTPUT_REPORT_MAX_LEN);
BLE_BAS_DEF(m_bas); /**< Structure used to identify the battery service. */
NRF_BLE_GATT_DEF(m_gatt); /**< GATT module instance. */
NRF_BLE_QWR_DEF(m_qwr); /**< Context for the Queued Write module.*/
BLE_ADVERTISING_DEF(m_advertising); /**< Advertising module instance. */
static bool m_in_boot_mode = false; /**< Current protocol mode. */
static uint16_t m_conn_handle = BLE_CONN_HANDLE_INVALID; /**< Handle of the current connection. */
static sensorsim_cfg_t m_battery_sim_cfg; /**< Battery Level sensor simulator configuration. */
static sensorsim_state_t m_battery_sim_state; /**< Battery Level sensor simulator state. */
static bool m_caps_on = false; /**< Variable to indicate if Caps Lock is turned on. */
static pm_peer_id_t m_peer_id; /**< Device reference handle to the current bonded central. */
static uint32_t m_whitelist_peer_cnt; /**< Number of peers currently in the whitelist. */
static buffer_list_t buffer_list; /**< List to enqueue not just data to be sent, but also related information like the handle, connection handle etc */
static pm_peer_id_t m_whitelist_peers[BLE_GAP_WHITELIST_ADDR_MAX_COUNT]; /**< List of peers currently in the whitelist. */
static ble_uuid_t m_adv_uuids[] = {{BLE_UUID_HUMAN_INTERFACE_DEVICE_SERVICE, BLE_UUID_TYPE_BLE}};
static uint8_t m_sample_key_press_scan_str[] = /**< Key pattern to be sent when the key press button has been pushed. */
{
0x0b, /* Key h */
0x08, /* Key e */
0x0f, /* Key l */
0x0f, /* Key l */
0x12, /* Key o */
0x28 /* Key Return */
};
static uint8_t m_caps_on_key_scan_str[] = /**< Key pattern to be sent when the output report has been written with the CAPS LOCK bit set. */
{
0x06, /* Key C */
0x04, /* Key a */
0x13, /* Key p */
0x16, /* Key s */
0x12, /* Key o */
0x11, /* Key n */
};
static uint8_t m_caps_off_key_scan_str[] = /**< Key pattern to be sent when the output report has been written with the CAPS LOCK bit cleared. */
{
0x06, /* Key C */
0x04, /* Key a */
0x13, /* Key p */
0x16, /* Key s */
0x12, /* Key o */
0x09, /* Key f */
};
static void on_hids_evt(ble_hids_t * p_hids, ble_hids_evt_t * p_evt);
/**@brief Callback function for asserts in the SoftDevice.
* @details This function will be called in case of an assert in the SoftDevice.
* @warning This handler is an example only and does not fit a final product. You need to analyze how your product is supposed to react in case of Assert.
* @warning On assert from the SoftDevice, the system can only recover on reset.
* @param[in] line_num Line number of the failing ASSERT call.
* @param[in] file_name File name of the failing ASSERT call. */
void assert_nrf_callback(uint16_t line_num, const uint8_t * p_file_name)
{
app_error_handler(DEAD_BEEF, line_num, p_file_name);
}
/**@brief Fetch the list of peer manager peer IDs.
* @param[inout] p_peers The buffer where to store the list of peer IDs.
* @param[inout] p_size In: The size of the @p p_peers buffer.
* Out: The number of peers copied in the buffer. */
static void peer_list_get(pm_peer_id_t * p_peers, uint32_t * p_size)
{
pm_peer_id_t peer_id;
uint32_t peers_to_copy;
peers_to_copy = (*p_size < BLE_GAP_WHITELIST_ADDR_MAX_COUNT) ? *p_size : BLE_GAP_WHITELIST_ADDR_MAX_COUNT;
peer_id = pm_next_peer_id_get(PM_PEER_ID_INVALID);
*p_size = 0;
while ((peer_id != PM_PEER_ID_INVALID) && (peers_to_copy--))
{
p_peers[(*p_size)++] = peer_id;
peer_id = pm_next_peer_id_get(peer_id);
}
}
/**@brief Clear bond information from persistent storage. */
static void delete_bonds(void)
{
ret_code_t err_code;
NRF_LOG_INFO("Erase bonds!");
err_code = pm_peers_delete();
APP_ERROR_CHECK(err_code);
}
/**@brief Function for starting advertising. */
static void advertising_start(bool erase_bonds)
{
if (erase_bonds == true)
{
delete_bonds(); // Advertising is started by PM_EVT_PEERS_DELETE_SUCCEEDED event.
}
else
{
ret_code_t ret;
memset(m_whitelist_peers, PM_PEER_ID_INVALID, sizeof(m_whitelist_peers));
m_whitelist_peer_cnt = (sizeof(m_whitelist_peers) / sizeof(pm_peer_id_t));
peer_list_get(m_whitelist_peers, &m_whitelist_peer_cnt);
ret = pm_whitelist_set(m_whitelist_peers, m_whitelist_peer_cnt);
APP_ERROR_CHECK(ret);
// Setup the device identies list.
// Some SoftDevices do not support this feature.
ret = pm_device_identities_list_set(m_whitelist_peers, m_whitelist_peer_cnt);
if (ret != NRF_ERROR_NOT_SUPPORTED)
{
APP_ERROR_CHECK(ret);
}
ret = ble_advertising_start(&m_advertising, BLE_ADV_MODE_FAST);
APP_ERROR_CHECK(ret);
}
}
/**@brief Function for handling Peer Manager events.
* @param[in] p_evt Peer Manager event.*/
static void pm_evt_handler(pm_evt_t const * p_evt)
{
ret_code_t err_code;
switch (p_evt->evt_id)
{
case PM_EVT_BONDED_PEER_CONNECTED:
{
NRF_LOG_INFO("Connected to a previously bonded device.");
} break;
case PM_EVT_CONN_SEC_SUCCEEDED:
{
NRF_LOG_INFO("Connection secured: role: %d, conn_handle: 0x%x, procedure: %d.", ble_conn_state_role(p_evt->conn_handle), p_evt->conn_handle, p_evt->params.conn_sec_succeeded.procedure);
m_peer_id = p_evt->peer_id;
} break;
case PM_EVT_CONN_SEC_FAILED:
{
/* Often, when securing fails, it shouldn't be restarted, for security reasons.
* Other times, it can be restarted directly.
* Sometimes it can be restarted, but only after changing some Security Parameters.
* Sometimes, it cannot be restarted until the link is disconnected and reconnected.
* Sometimes it is impossible, to secure the link, or the peer device does not support it.
* How to handle this error is highly application dependent. */
} break;
case PM_EVT_CONN_SEC_CONFIG_REQ:
{
// Reject pairing request from an already bonded peer.
pm_conn_sec_config_t conn_sec_config = {.allow_repairing = false};
pm_conn_sec_config_reply(p_evt->conn_handle, &conn_sec_config);
} break;
case PM_EVT_STORAGE_FULL:
{
// Run garbage collection on the flash.
err_code = fds_gc();
if (err_code == FDS_ERR_NO_SPACE_IN_QUEUES)
{
// Retry.
}
else
{
APP_ERROR_CHECK(err_code);
}
} break;
case PM_EVT_PEERS_DELETE_SUCCEEDED:
{
advertising_start(false);
} break;
case PM_EVT_PEER_DATA_UPDATE_SUCCEEDED:
{
if (p_evt->params.peer_data_update_succeeded.flash_changed && (p_evt->params.peer_data_update_succeeded.data_id == PM_PEER_DATA_ID_BONDING))
{
NRF_LOG_INFO("New Bond, add the peer to the whitelist if possible");
NRF_LOG_INFO("\tm_whitelist_peer_cnt %d, MAX_PEERS_WLIST %d", m_whitelist_peer_cnt + 1, BLE_GAP_WHITELIST_ADDR_MAX_COUNT);
// Note: You should check on what kind of white list policy your application should use.
if (m_whitelist_peer_cnt < BLE_GAP_WHITELIST_ADDR_MAX_COUNT)
{
// Bonded to a new peer, add it to the whitelist.
m_whitelist_peers[m_whitelist_peer_cnt++] = m_peer_id;
// The whitelist has been modified, update it in the Peer Manager.
err_code = pm_device_identities_list_set(m_whitelist_peers, m_whitelist_peer_cnt);
if (err_code != NRF_ERROR_NOT_SUPPORTED)
{
APP_ERROR_CHECK(err_code);
}
err_code = pm_whitelist_set(m_whitelist_peers, m_whitelist_peer_cnt);
APP_ERROR_CHECK(err_code);
}
}
} break;
case PM_EVT_PEER_DATA_UPDATE_FAILED:
{
// Assert.
APP_ERROR_CHECK(p_evt->params.peer_data_update_failed.error);
} break;
case PM_EVT_PEER_DELETE_FAILED:
{
// Assert.
APP_ERROR_CHECK(p_evt->params.peer_delete_failed.error);
} break;
case PM_EVT_PEERS_DELETE_FAILED:
{
// Assert.
APP_ERROR_CHECK(p_evt->params.peers_delete_failed_evt.error);
} break;
case PM_EVT_ERROR_UNEXPECTED:
{
// Assert.
APP_ERROR_CHECK(p_evt->params.error_unexpected.error);
} break;
case PM_EVT_CONN_SEC_START:
case PM_EVT_PEER_DELETE_SUCCEEDED:
case PM_EVT_LOCAL_DB_CACHE_APPLIED:
case PM_EVT_LOCAL_DB_CACHE_APPLY_FAILED:
// This can happen when the local DB has changed.
case PM_EVT_SERVICE_CHANGED_IND_SENT:
case PM_EVT_SERVICE_CHANGED_IND_CONFIRMED:
default:
break;
}
}
/**@brief Function for handling Service errors.
* @details A pointer to this function will be passed to each service which may need to inform the application about an error.
* @param[in] nrf_error Error code containing information about what went wrong. */
static void service_error_handler(uint32_t nrf_error)
{
APP_ERROR_HANDLER(nrf_error);
}
/**@brief Function for handling advertising errors.
* @param[in] nrf_error Error code containing information about what went wrong. */
static void ble_advertising_error_handler(uint32_t nrf_error)
{
APP_ERROR_HANDLER(nrf_error);
}
/**@brief Function for performing a battery measurement, and update the Battery Level characteristic in the Battery Service. */
static void battery_level_update(void)
{
ret_code_t err_code;
uint8_t battery_level;
battery_level = (uint8_t)sensorsim_measure(&m_battery_sim_state, &m_battery_sim_cfg);
err_code = ble_bas_battery_level_update(&m_bas, battery_level, BLE_CONN_HANDLE_ALL);//LAST ARGUMENT NOT INCLUDED
if ((err_code != NRF_SUCCESS) &&
(err_code != NRF_ERROR_BUSY) &&
(err_code != NRF_ERROR_RESOURCES) &&
(err_code != NRF_ERROR_FORBIDDEN) &&
(err_code != NRF_ERROR_INVALID_STATE) &&
(err_code != BLE_ERROR_GATTS_SYS_ATTR_MISSING)
)
{
APP_ERROR_HANDLER(err_code);
}
}
/**@brief Function for handling the Battery measurement timer timeout.
* @details This function will be called each time the battery level measurement timer expires.
* @param[in] p_context Pointer used for passing some arbitrary information (context) from the app_start_timer() call to the timeout handler. */
static void battery_level_meas_timeout_handler(void * p_context)
{
UNUSED_PARAMETER(p_context);
battery_level_update();
}
/**@brief Function for the Timer initialization.
* @details Initializes the timer module. */
static void timers_init(void)
{
ret_code_t err_code;
err_code = app_timer_init();
APP_ERROR_CHECK(err_code);
// Create battery timer.
err_code = app_timer_create(&m_battery_timer_id, APP_TIMER_MODE_REPEATED, battery_level_meas_timeout_handler);
APP_ERROR_CHECK(err_code);
}
/**@brief Function for the GAP initialization.
* @details This function sets up all the necessary GAP (Generic Access Profile) parameters of the device including the device name, appearance, and the preferred connection parameters. */
static void gap_params_init(void)
{
ret_code_t err_code;
ble_gap_conn_params_t gap_conn_params;
ble_gap_conn_sec_mode_t sec_mode;
BLE_GAP_CONN_SEC_MODE_SET_OPEN(&sec_mode);
err_code = sd_ble_gap_device_name_set(&sec_mode, (const uint8_t *)DEVICE_NAME, strlen(DEVICE_NAME));
APP_ERROR_CHECK(err_code);
err_code = sd_ble_gap_appearance_set(BLE_APPEARANCE_HID_KEYBOARD);
APP_ERROR_CHECK(err_code);
memset(&gap_conn_params, 0, sizeof(gap_conn_params));
gap_conn_params.min_conn_interval = MIN_CONN_INTERVAL;
gap_conn_params.max_conn_interval = MAX_CONN_INTERVAL;
gap_conn_params.slave_latency = SLAVE_LATENCY;
gap_conn_params.conn_sup_timeout = CONN_SUP_TIMEOUT;
err_code = sd_ble_gap_ppcp_set(&gap_conn_params);
APP_ERROR_CHECK(err_code);
}
/**@brief Function for initializing the GATT module. */
static void gatt_init(void)
{
ret_code_t err_code = nrf_ble_gatt_init(&m_gatt, NULL);
APP_ERROR_CHECK(err_code);
}
/**@brief Function for handling Queued Write Module errors.
* @details A pointer to this function will be passed to each service which may need to inform the application about an error.
* @param[in] nrf_error Error code containing information about what went wrong. */
static void nrf_qwr_error_handler(uint32_t nrf_error)
{
APP_ERROR_HANDLER(nrf_error);
}
/**@brief Function for initializing the Queued Write Module. */
static void qwr_init(void)
{
ret_code_t err_code;
nrf_ble_qwr_init_t qwr_init_obj = {0};
qwr_init_obj.error_handler = nrf_qwr_error_handler;
err_code = nrf_ble_qwr_init(&m_qwr, &qwr_init_obj);
APP_ERROR_CHECK(err_code);
}
/**@brief Function for initializing Device Information Service. */
static void dis_init(void)
{
ret_code_t err_code;
ble_dis_init_t dis_init_obj;
ble_dis_pnp_id_t pnp_id;
pnp_id.vendor_id_source = PNP_ID_VENDOR_ID_SOURCE;
pnp_id.vendor_id = PNP_ID_VENDOR_ID;
pnp_id.product_id = PNP_ID_PRODUCT_ID;
pnp_id.product_version = PNP_ID_PRODUCT_VERSION;
memset(&dis_init_obj, 0, sizeof(dis_init_obj));
ble_srv_ascii_to_utf8(&dis_init_obj.manufact_name_str, MANUFACTURER_NAME);
dis_init_obj.p_pnp_id = &pnp_id;
BLE_GAP_CONN_SEC_MODE_SET_ENC_NO_MITM(&dis_init_obj.dis_attr_md.read_perm);
BLE_GAP_CONN_SEC_MODE_SET_NO_ACCESS(&dis_init_obj.dis_attr_md.write_perm);
err_code = ble_dis_init(&dis_init_obj);
APP_ERROR_CHECK(err_code);
}
/**@brief Function for initializing Battery Service. */
static void bas_init(void)
{
ret_code_t err_code;
ble_bas_init_t bas_init_obj;
memset(&bas_init_obj, 0, sizeof(bas_init_obj));
bas_init_obj.evt_handler = NULL;
bas_init_obj.support_notification = true;
bas_init_obj.p_report_ref = NULL;
bas_init_obj.initial_batt_level = 100;
BLE_GAP_CONN_SEC_MODE_SET_ENC_NO_MITM(&bas_init_obj.battery_level_char_attr_md.cccd_write_perm);
BLE_GAP_CONN_SEC_MODE_SET_ENC_NO_MITM(&bas_init_obj.battery_level_char_attr_md.read_perm);
BLE_GAP_CONN_SEC_MODE_SET_NO_ACCESS(&bas_init_obj.battery_level_char_attr_md.write_perm);
BLE_GAP_CONN_SEC_MODE_SET_ENC_NO_MITM(&bas_init_obj.battery_level_report_read_perm);
err_code = ble_bas_init(&m_bas, &bas_init_obj);
APP_ERROR_CHECK(err_code);
}
/**@brief Function for initializing HID Service. */
static void hids_init(void)
{
ret_code_t err_code;
ble_hids_init_t hids_init_obj;
ble_hids_inp_rep_init_t * p_input_report;
ble_hids_outp_rep_init_t * p_output_report;
uint8_t hid_info_flags;
static ble_hids_inp_rep_init_t input_report_array[1]; //2
static ble_hids_outp_rep_init_t output_report_array[1];
static uint8_t report_map_data[] =
{
0x06, 0x00, 0xFF, // Usage Page = 0xFF00 (Vendor Defined Page 1)
0x09, 0x01, // Usage (Vendor Usage 1)
0xA1, 0x01, // Collection (Application)
0x19, 0x01, // Usage Minimum
0x29, INPUT_REPORT_KEYS_MAX_LEN, // Usage Maximum
0x15, 0x00, // Logical Minimum (data bytes in the report may have minimum value = 0x00)
0x26, 0xFF, 0x00, // Logical Maximum (data bytes in the report may have maximum value = 0x00FF = unsigned 255)
0x75, 0x08, // Report Size: 8-bit field size
0x95, INPUT_REPORT_KEYS_MAX_LEN, // Report Count: Make sixty-four 8-bit fields (the next time the parser hits an "Input", "Output", or "Feature" item)
0x81, 0x00, // Input (Data, Array, Abs): Instantiates input packet fields based on the above report size, count, logical min/max, and usage.
0x19, 0x01, // Usage Minimum
0x29, OUTPUT_REPORT_MAX_LEN, // Usage Maximum
0x91, 0x00, // Output (Data, Array, Abs): Instantiates output packet fields. Uses same report size and count as "Input" fields, since nothing new/different was specified to the parser since the "Input" item.
0xC0 // End Collection
// 0x05, 0x01, // Usage Page (Generic Desktop)
// 0x09, 0x06, // Usage (Keyboard)
// 0xA1, 0x01, // Collection (Application)
// 0x05, 0x07, // Usage Page (Key Codes)
// 0x19, 0xe0, // Usage Minimum (224)
// 0x29, 0xe7, // Usage Maximum (231)
// 0x15, 0x00, // Logical Minimum (0)
// 0x25, 0x01, // Logical Maximum (1)
// 0x75, 0x01, // Report Size (1)
// 0x95, 0x08, // Report Count (8)
// 0x81, 0x02, // Input (Data, Variable, Absolute)
// 0x95, 0x01, // Report Count (1)
// 0x75, 0x08, // Report Size (8)
// 0x81, 0x01, // Input (Constant) reserved byte(1)
// 0x95, 0x05, // Report Count (5)
// 0x75, 0x01, // Report Size (1)
// 0x05, 0x08, // Usage Page (Page# for LEDs)
// 0x19, 0x01, // Usage Minimum (1)
// 0x29, 0x05, // Usage Maximum (5)
// 0x91, 0x02, // Output (Data, Variable, Absolute), Led report
// 0x95, 0x01, // Report Count (1)
// 0x75, 0x03, // Report Size (3)
// 0x91, 0x01, // Output (Data, Variable, Absolute), Led report padding
// 0x95, 0x06, // Report Count (6)
// 0x75, 0x08, // Report Size (8)
// 0x15, 0x00, // Logical Minimum (0)
// 0x25, 0x65, // Logical Maximum (101)
// 0x05, 0x07, // Usage Page (Key codes)
// 0x19, 0x00, // Usage Minimum (0)
// 0x29, 0x65, // Usage Maximum (101)
// 0x81, 0x00, // Input (Data, Array) Key array(6 bytes)
// 0x09, 0x05, // Usage (Vendor Defined)
// 0x15, 0x00, // Logical Minimum (0)
// 0x26, 0xFF, 0x00, // Logical Maximum (255)
// 0x75, 0x08, // Report Count (2)
// 0x95, 0x02, // Report Size (8 bit)
// 0xB1, 0x02, // Feature (Data, Variable, Absolute)
// 0xC0 // End Collection (Application)
};
memset((void *)input_report_array, 0, sizeof(ble_hids_inp_rep_init_t));
memset((void *)output_report_array, 0, sizeof(ble_hids_outp_rep_init_t));
// Initialize HID Service
p_input_report = &input_report_array[INPUT_REPORT_KEYS_INDEX];
p_input_report->max_len = INPUT_REPORT_KEYS_MAX_LEN;
p_input_report->rep_ref.report_id = INPUT_REP_REF_ID;
p_input_report->rep_ref.report_type = BLE_HIDS_REP_TYPE_INPUT;
BLE_GAP_CONN_SEC_MODE_SET_ENC_NO_MITM(&p_input_report->security_mode.cccd_write_perm);
BLE_GAP_CONN_SEC_MODE_SET_ENC_NO_MITM(&p_input_report->security_mode.read_perm);
BLE_GAP_CONN_SEC_MODE_SET_ENC_NO_MITM(&p_input_report->security_mode.write_perm);
p_output_report = &output_report_array[OUTPUT_REPORT_INDEX];
p_output_report->max_len = OUTPUT_REPORT_MAX_LEN;
p_output_report->rep_ref.report_id = OUTPUT_REP_REF_ID;
p_output_report->rep_ref.report_type = BLE_HIDS_REP_TYPE_OUTPUT;
BLE_GAP_CONN_SEC_MODE_SET_ENC_NO_MITM(&p_output_report->security_mode.read_perm);
BLE_GAP_CONN_SEC_MODE_SET_ENC_NO_MITM(&p_output_report->security_mode.write_perm);
hid_info_flags = HID_INFO_FLAG_REMOTE_WAKE_MSK | HID_INFO_FLAG_NORMALLY_CONNECTABLE_MSK;
memset(&hids_init_obj, 0, sizeof(hids_init_obj));
hids_init_obj.evt_handler = on_hids_evt;
hids_init_obj.error_handler = service_error_handler;
hids_init_obj.is_kb = true;
hids_init_obj.is_mouse = false;
hids_init_obj.inp_rep_count = 1;
hids_init_obj.p_inp_rep_array = input_report_array;
hids_init_obj.outp_rep_count = 1;
hids_init_obj.p_outp_rep_array = output_report_array;
hids_init_obj.feature_rep_count = 0;
hids_init_obj.p_feature_rep_array = NULL;
hids_init_obj.rep_map.data_len = sizeof(report_map_data);
hids_init_obj.rep_map.p_data = report_map_data;
hids_init_obj.hid_information.bcd_hid = BASE_USB_HID_SPEC_VERSION;
hids_init_obj.hid_information.b_country_code = 0;
hids_init_obj.hid_information.flags = hid_info_flags;
hids_init_obj.included_services_count = 0;
hids_init_obj.p_included_services_array = NULL;
BLE_GAP_CONN_SEC_MODE_SET_ENC_NO_MITM(&hids_init_obj.rep_map.security_mode.read_perm);
BLE_GAP_CONN_SEC_MODE_SET_NO_ACCESS(&hids_init_obj.rep_map.security_mode.write_perm);
BLE_GAP_CONN_SEC_MODE_SET_ENC_NO_MITM(&hids_init_obj.hid_information.security_mode.read_perm);
BLE_GAP_CONN_SEC_MODE_SET_NO_ACCESS(&hids_init_obj.hid_information.security_mode.write_perm);
BLE_GAP_CONN_SEC_MODE_SET_ENC_NO_MITM(&hids_init_obj.security_mode_boot_kb_inp_rep.cccd_write_perm);
BLE_GAP_CONN_SEC_MODE_SET_ENC_NO_MITM(&hids_init_obj.security_mode_boot_kb_inp_rep.read_perm);
BLE_GAP_CONN_SEC_MODE_SET_NO_ACCESS(&hids_init_obj.security_mode_boot_kb_inp_rep.write_perm);
BLE_GAP_CONN_SEC_MODE_SET_ENC_NO_MITM(&hids_init_obj.security_mode_boot_kb_outp_rep.read_perm);
BLE_GAP_CONN_SEC_MODE_SET_ENC_NO_MITM(&hids_init_obj.security_mode_boot_kb_outp_rep.write_perm);
BLE_GAP_CONN_SEC_MODE_SET_ENC_NO_MITM(&hids_init_obj.security_mode_protocol.read_perm);
BLE_GAP_CONN_SEC_MODE_SET_ENC_NO_MITM(&hids_init_obj.security_mode_protocol.write_perm);
BLE_GAP_CONN_SEC_MODE_SET_NO_ACCESS(&hids_init_obj.security_mode_ctrl_point.read_perm);
BLE_GAP_CONN_SEC_MODE_SET_ENC_NO_MITM(&hids_init_obj.security_mode_ctrl_point.write_perm);
err_code = ble_hids_init(&m_hids, &hids_init_obj);
APP_ERROR_CHECK(err_code);
}
/**@brief Function for initializing services that will be used by the application. */
static void services_init(void)
{
qwr_init();
dis_init();
bas_init();
hids_init();
}
/**@brief Function for initializing the battery sensor simulator. */
static void sensor_simulator_init(void)
{
m_battery_sim_cfg.min = MIN_BATTERY_LEVEL;
m_battery_sim_cfg.max = MAX_BATTERY_LEVEL;
m_battery_sim_cfg.incr = BATTERY_LEVEL_INCREMENT;
m_battery_sim_cfg.start_at_max = true;
sensorsim_init(&m_battery_sim_state, &m_battery_sim_cfg);
}
/**@brief Function for handling a Connection Parameters error.
* @param[in] nrf_error Error code containing information about what went wrong. */
static void conn_params_error_handler(uint32_t nrf_error)
{
APP_ERROR_HANDLER(nrf_error);
}
/**@brief Function for initializing the Connection Parameters module. */
static void conn_params_init(void)
{
ret_code_t err_code;
ble_conn_params_init_t cp_init;
memset(&cp_init, 0, sizeof(cp_init));
cp_init.p_conn_params = NULL;
cp_init.first_conn_params_update_delay = FIRST_CONN_PARAMS_UPDATE_DELAY;
cp_init.next_conn_params_update_delay = NEXT_CONN_PARAMS_UPDATE_DELAY;
cp_init.max_conn_params_update_count = MAX_CONN_PARAMS_UPDATE_COUNT;
cp_init.start_on_notify_cccd_handle = BLE_GATT_HANDLE_INVALID;
cp_init.disconnect_on_fail = false;
cp_init.evt_handler = NULL;
cp_init.error_handler = conn_params_error_handler;
err_code = ble_conn_params_init(&cp_init);
APP_ERROR_CHECK(err_code);
}
/**@brief Function for starting timers. */
static void timers_start(void)
{
ret_code_t err_code;
err_code = app_timer_start(m_battery_timer_id, BATTERY_LEVEL_MEAS_INTERVAL, NULL);
APP_ERROR_CHECK(err_code);
}
/**@brief Function for transmitting a key scan Press & Release Notification.
* @warning This handler is an example only. You need to analyze how you wish to send the key release.
* @param[in] p_instance Identifies the service for which Key Notifications are requested.
* @param[in] p_key_pattern Pointer to key pattern.
* @param[in] pattern_len Length of key pattern. 0 < pattern_len < 7.
* @param[in] pattern_offset Offset applied to Key Pattern for transmission.
* @param[out] actual_len Provides actual length of Key Pattern transmitted, making buffering of rest possible if needed.
* @return NRF_SUCCESS on success, NRF_ERROR_RESOURCES in case transmission could not be completed due to lack of transmission buffer or other error codes indicating reason for failure.
* @note In case of NRF_ERROR_RESOURCES, remaining pattern that could not be transmitted can be enqueued \ref buffer_enqueue function.
* In case a pattern of 'cofFEe' is the p_key_pattern, with pattern_len as 6 and pattern_offset as 0, the notifications as observed on the peer side would be
* 1> 'c', 'o', 'f', 'F', 'E', 'e'
* 2> - , 'o', 'f', 'F', 'E', 'e'
* 3> - , -, 'f', 'F', 'E', 'e'
* 4> - , -, -, 'F', 'E', 'e'
* 5> - , -, -, -, 'E', 'e'
* 6> - , -, -, -, -, 'e'
* 7> - , -, -, -, -, -
* Here, '-' refers to release, 'c' refers to the key character being transmitted.
* Therefore 7 notifications will be sent.
* In case an offset of 4 was provided, the pattern notifications sent will be from 5-7 will be transmitted. */
static uint32_t send_key_scan_press_release(ble_hids_t * p_hids, uint8_t * p_key_pattern, uint16_t pattern_len, uint16_t pattern_offset, uint16_t * p_actual_len)
{
ret_code_t err_code;
uint16_t offset;
uint16_t data_len;
uint8_t data[INPUT_REPORT_KEYS_MAX_LEN];//="ABCDEFGHIJKLMNOPQR";
// HID Report Descriptor enumerates an array of size 6, the pattern hence shall not be any longer than this.
STATIC_ASSERT((INPUT_REPORT_KEYS_MAX_LEN - 2) == 6);
ASSERT(pattern_len <= (INPUT_REPORT_KEYS_MAX_LEN - 2));
offset = pattern_offset;
data_len = pattern_len;
do
{
// Reset the data buffer.
memset(data, 0, sizeof(data));
// Copy the scan code.
memcpy(data + SCAN_CODE_POS + offset, p_key_pattern + offset, data_len - offset);
if (bsp_button_is_pressed(SHIFT_BUTTON_ID))
{
data[MODIFIER_KEY_POS] |= SHIFT_KEY_CODE;
}
if (!m_in_boot_mode)
{
//err_code = ble_hids_inp_rep_send(p_hids, INPUT_REPORT_KEYS_INDEX, INPUT_REPORT_KEYS_MAX_LEN, data, m_conn_handle);
err_code = ble_hids_inp_rep_send(p_hids, INPUT_REPORT_KEYS_INDEX, INPUT_REPORT_KEYS_MAX_LEN, data, m_conn_handle);
}
else
{
//err_code = ble_hids_boot_kb_inp_rep_send(p_hids, INPUT_REPORT_KEYS_MAX_LEN, data, m_conn_handle);
err_code = ble_hids_boot_kb_inp_rep_send(p_hids, INPUT_REPORT_KEYS_MAX_LEN, data, m_conn_handle);
}
if (err_code != NRF_SUCCESS)
{
break;
}
offset++;
}
while (offset <= data_len);
*p_actual_len = offset;
return err_code;
}
/**@brief Function for initializing the buffer queue used to key events that could not be transmitted
* @warning This handler is an example only. You need to analyze how you wish to buffer or buffer at all.
* @note In case of HID keyboard, a temporary buffering could be employed to handle scenarios where encryption is not yet enabled or there was a momentary link loss or there were no Transmit buffers. */
static void buffer_init(void)
{
uint32_t buffer_count;
BUFFER_LIST_INIT();
for (buffer_count = 0; buffer_count < MAX_BUFFER_ENTRIES; buffer_count++)
{
BUFFER_ELEMENT_INIT(buffer_count);
}
}
/**@brief Function for enqueuing key scan patterns that could not be transmitted either completely or partially.
* @warning This handler is an example only. You need to analyze how you wish to send the key release.
* @param[in] p_hids Identifies the service for which Key Notifications are buffered.
* @param[in] p_key_pattern Pointer to key pattern.
* @param[in] pattern_len Length of key pattern.
* @param[in] offset Offset applied to Key Pattern when requesting a transmission on dequeue, @ref buffer_dequeue.
* @return NRF_SUCCESS on success, else an error code indicating reason for failure. */
static uint32_t buffer_enqueue(ble_hids_t * p_hids, uint8_t * p_key_pattern, uint16_t pattern_len, uint16_t offset)
{
buffer_entry_t * element;
uint32_t err_code = NRF_SUCCESS;
if (BUFFER_LIST_FULL())
{
// Element cannot be buffered.
err_code = NRF_ERROR_NO_MEM;
}
else
{
// Make entry of buffer element and copy data.
element = &buffer_list.buffer[(buffer_list.wp)];
element->p_instance = p_hids;
element->p_data = p_key_pattern;
element->data_offset = offset;
element->data_len = pattern_len;
buffer_list.count++;
buffer_list.wp++;
if (buffer_list.wp == MAX_BUFFER_ENTRIES)
{
buffer_list.wp = 0;
}
}
return err_code;
}
/**@brief Function to dequeue key scan patterns that could not be transmitted either completely of partially.
* @warning This handler is an example only. You need to analyze how you wish to send the key release.
* @param[in] tx_flag Indicative of whether the dequeue should result in transmission or not.
* @note A typical example when all keys are dequeued with transmission is when link is disconnected.
* @return NRF_SUCCESS on success, else an error code indicating reason for failure. */
static uint32_t buffer_dequeue(bool tx_flag)
{
buffer_entry_t * p_element;
uint32_t err_code = NRF_SUCCESS;
uint16_t actual_len;
if (BUFFER_LIST_EMPTY())
{
err_code = NRF_ERROR_NOT_FOUND;
}
else
{
bool remove_element = true;
p_element = &buffer_list.buffer[(buffer_list.rp)];
if (tx_flag)
{
err_code = send_key_scan_press_release(p_element->p_instance, p_element->p_data, p_element->data_len, p_element->data_offset, &actual_len);
// An additional notification is needed for release of all keys, therefore check is for actual_len <= element->data_len and not actual_len < element->data_len
if ((err_code == NRF_ERROR_RESOURCES) && (actual_len <= p_element->data_len))
{
// Transmission could not be completed, do not remove the entry, adjust next data to be transmitted
p_element->data_offset = actual_len;
remove_element = false;
}
}
if (remove_element)
{
BUFFER_ELEMENT_INIT(buffer_list.rp);
buffer_list.rp++;
buffer_list.count--;
if (buffer_list.rp == MAX_BUFFER_ENTRIES)
{
buffer_list.rp = 0;
}
}
}
return err_code;
}
/**@brief Function for sending sample key presses to the peer.
* @param[in] key_pattern_len Pattern length.
* @param[in] p_key_pattern Pattern to be sent. */
static void keys_send(uint8_t key_pattern_len, uint8_t * p_key_pattern)
{
ret_code_t err_code;
uint16_t actual_len;
err_code = send_key_scan_press_release(&m_hids, p_key_pattern, key_pattern_len, 0, &actual_len);
// An additional notification is needed for release of all keys, therefore check is for actual_len <= key_pattern_len and not actual_len < key_pattern_len.
if ((err_code == NRF_ERROR_RESOURCES) && (actual_len <= key_pattern_len))
{
// Buffer enqueue routine return value is not intentionally checked.
// Rationale: Its better to have a a few keys missing than have a system reset.
// Recommendation is to work out most optimal value for MAX_BUFFER_ENTRIES to minimize chances of buffer queue full condition
UNUSED_VARIABLE(buffer_enqueue(&m_hids, p_key_pattern, key_pattern_len, actual_len));
}
if ((err_code != NRF_SUCCESS) &&
(err_code != NRF_ERROR_INVALID_STATE) &&
(err_code != NRF_ERROR_RESOURCES) &&
(err_code != NRF_ERROR_BUSY) &&
(err_code != BLE_ERROR_GATTS_SYS_ATTR_MISSING)
)
{
APP_ERROR_HANDLER(err_code);
}
}
/**@brief Function for handling the HID Report Characteristic Write event.
* @param[in] p_evt HID service event. */
static void on_hid_rep_char_write(ble_hids_evt_t * p_evt)
{
if (p_evt->params.char_write.char_id.rep_type == BLE_HIDS_REP_TYPE_OUTPUT)
{
ret_code_t err_code;
uint8_t report_val;
uint8_t report_index = p_evt->params.char_write.char_id.rep_index;
if (report_index == OUTPUT_REPORT_INDEX)
{
// This code assumes that the output report is one byte long. Hence the following static assert is made.
STATIC_ASSERT(OUTPUT_REPORT_MAX_LEN == 1);
err_code = ble_hids_outp_rep_get(&m_hids, report_index, OUTPUT_REPORT_MAX_LEN, 0, m_conn_handle, &report_val);
APP_ERROR_CHECK(err_code);
if (!m_caps_on && ((report_val & OUTPUT_REPORT_BIT_MASK_CAPS_LOCK) != 0))
{
// Caps Lock is turned On.
NRF_LOG_INFO("Caps Lock is turned On!");
err_code = bsp_indication_set(BSP_INDICATE_ALERT_3);
APP_ERROR_CHECK(err_code);
keys_send(sizeof(m_caps_on_key_scan_str), m_caps_on_key_scan_str);
m_caps_on = true;
}
else if (m_caps_on && ((report_val & OUTPUT_REPORT_BIT_MASK_CAPS_LOCK) == 0))
{
// Caps Lock is turned Off .
NRF_LOG_INFO("Caps Lock is turned Off!");
err_code = bsp_indication_set(BSP_INDICATE_ALERT_OFF);
APP_ERROR_CHECK(err_code);
keys_send(sizeof(m_caps_off_key_scan_str), m_caps_off_key_scan_str);
m_caps_on = false;
}
else
{
// The report received is not supported by this application. Do nothing.
}
}
}
}
/**@brief Function for putting the chip into sleep mode.
* @note This function will not return. */
static void sleep_mode_enter(void)
{
ret_code_t err_code;
err_code = bsp_indication_set(BSP_INDICATE_IDLE);
APP_ERROR_CHECK(err_code);
// Prepare wakeup buttons.
err_code = bsp_btn_ble_sleep_mode_prepare();
APP_ERROR_CHECK(err_code);
// Go to system-off mode (this function will not return; wakeup will cause a reset).
err_code = sd_power_system_off();
APP_ERROR_CHECK(err_code);
}
/**@brief Function for handling HID events.
* @details This function will be called for all HID events which are passed to the application.
* @param[in] p_hids HID service structure.
* @param[in] p_evt Event received from the HID service. */
static void on_hids_evt(ble_hids_t * p_hids, ble_hids_evt_t * p_evt)
{
switch (p_evt->evt_type)
{
case BLE_HIDS_EVT_BOOT_MODE_ENTERED:
m_in_boot_mode = true;
break;
case BLE_HIDS_EVT_REPORT_MODE_ENTERED:
m_in_boot_mode = false;
break;
case BLE_HIDS_EVT_REP_CHAR_WRITE:
on_hid_rep_char_write(p_evt);
break;
case BLE_HIDS_EVT_NOTIF_ENABLED:
break;
default:
// No implementation needed.
break;
}
}
/**@brief Function for handling advertising events.
* @details This function will be called for advertising events which are passed to the application.
* @param[in] ble_adv_evt Advertising event. */
static void on_adv_evt(ble_adv_evt_t ble_adv_evt)
{
ret_code_t err_code;
switch (ble_adv_evt)
{
case BLE_ADV_EVT_DIRECTED_HIGH_DUTY:
NRF_LOG_INFO("High Duty Directed advertising.");
err_code = bsp_indication_set(BSP_INDICATE_ADVERTISING_DIRECTED);
APP_ERROR_CHECK(err_code);
break;
case BLE_ADV_EVT_DIRECTED: // NOT USED
NRF_LOG_INFO("Directed advertising.");
err_code = bsp_indication_set(BSP_INDICATE_ADVERTISING_DIRECTED);
APP_ERROR_CHECK(err_code);
break;
case BLE_ADV_EVT_FAST: // NOT USED
NRF_LOG_INFO("Fast advertising.");
err_code = bsp_indication_set(BSP_INDICATE_ADVERTISING);
APP_ERROR_CHECK(err_code);
break;
case BLE_ADV_EVT_SLOW: // NOT USED
NRF_LOG_INFO("Slow advertising.");
err_code = bsp_indication_set(BSP_INDICATE_ADVERTISING_SLOW);
APP_ERROR_CHECK(err_code);
break;
case BLE_ADV_EVT_FAST_WHITELIST: // NOT USED
NRF_LOG_INFO("Fast advertising with whitelist.");
err_code = bsp_indication_set(BSP_INDICATE_ADVERTISING_WHITELIST);
APP_ERROR_CHECK(err_code);
break;
case BLE_ADV_EVT_SLOW_WHITELIST: // NOT USED
NRF_LOG_INFO("Slow advertising with whitelist.");
err_code = bsp_indication_set(BSP_INDICATE_ADVERTISING_WHITELIST);
APP_ERROR_CHECK(err_code);
break;
case BLE_ADV_EVT_IDLE: // NOT USED
sleep_mode_enter();
break;
case BLE_ADV_EVT_WHITELIST_REQUEST:
{
ble_gap_addr_t whitelist_addrs[BLE_GAP_WHITELIST_ADDR_MAX_COUNT];
ble_gap_irk_t whitelist_irks[BLE_GAP_WHITELIST_ADDR_MAX_COUNT];
uint32_t addr_cnt = BLE_GAP_WHITELIST_ADDR_MAX_COUNT;
uint32_t irk_cnt = BLE_GAP_WHITELIST_ADDR_MAX_COUNT;
err_code = pm_whitelist_get(whitelist_addrs, &addr_cnt, whitelist_irks, &irk_cnt);
APP_ERROR_CHECK(err_code);
NRF_LOG_DEBUG("pm_whitelist_get returns %d addr in whitelist and %d irk whitelist", addr_cnt, irk_cnt);
// Apply the whitelist.
err_code = ble_advertising_whitelist_reply(&m_advertising, whitelist_addrs, addr_cnt, whitelist_irks, irk_cnt);
APP_ERROR_CHECK(err_code);
} break; //BLE_ADV_EVT_WHITELIST_REQUEST
case BLE_ADV_EVT_PEER_ADDR_REQUEST:
{
pm_peer_data_bonding_t peer_bonding_data;
// Only Give peer address if we have a handle to the bonded peer.
if (m_peer_id != PM_PEER_ID_INVALID)
{
err_code = pm_peer_data_bonding_load(m_peer_id, &peer_bonding_data);
if (err_code != NRF_ERROR_NOT_FOUND)
{
APP_ERROR_CHECK(err_code);
ble_gap_addr_t * p_peer_addr = &(peer_bonding_data.peer_ble_id.id_addr_info);
err_code = ble_advertising_peer_addr_reply(&m_advertising, p_peer_addr);
APP_ERROR_CHECK(err_code);
}
}
} break; //BLE_ADV_EVT_PEER_ADDR_REQUEST
default:
break;
}
}
/**@brief Function for handling BLE events.
* @param[in] p_ble_evt Bluetooth stack event.
* @param[in] p_context Unused. */
static void ble_evt_handler(ble_evt_t const * p_ble_evt, void * p_context)
{
ret_code_t err_code;
switch (p_ble_evt->header.evt_id)
{
case BLE_GAP_EVT_CONNECTED:
NRF_LOG_INFO("Connected");
err_code = bsp_indication_set(BSP_INDICATE_CONNECTED);
APP_ERROR_CHECK(err_code);
m_conn_handle = p_ble_evt->evt.gap_evt.conn_handle;
err_code = nrf_ble_qwr_conn_handle_assign(&m_qwr, m_conn_handle);
APP_ERROR_CHECK(err_code);
break;
case BLE_GAP_EVT_DISCONNECTED:
NRF_LOG_INFO("Disconnected");
// Dequeue all keys without transmission.
(void) buffer_dequeue(false);
m_conn_handle = BLE_CONN_HANDLE_INVALID;
// Reset m_caps_on variable. Upon reconnect, the HID host will re-send the Output report containing the Caps lock state.
m_caps_on = false;
// disabling alert 3. signal - used for capslock ON
err_code = bsp_indication_set(BSP_INDICATE_ALERT_OFF);
APP_ERROR_CHECK(err_code);
break; // BLE_GAP_EVT_DISCONNECTED
case BLE_GAP_EVT_PHY_UPDATE_REQUEST:
{
NRF_LOG_DEBUG("PHY update request.");
ble_gap_phys_t const phys =
{
.rx_phys = BLE_GAP_PHY_AUTO,
.tx_phys = BLE_GAP_PHY_AUTO,
};
err_code = sd_ble_gap_phy_update(p_ble_evt->evt.gap_evt.conn_handle, &phys);
APP_ERROR_CHECK(err_code);
} break;
case BLE_GATTS_EVT_HVN_TX_COMPLETE:
// Send next key event
(void) buffer_dequeue(true);
break;
case BLE_GATTC_EVT_TIMEOUT:
// Disconnect on GATT Client timeout event.
NRF_LOG_DEBUG("GATT Client Timeout.");
err_code = sd_ble_gap_disconnect(p_ble_evt->evt.gattc_evt.conn_handle, BLE_HCI_REMOTE_USER_TERMINATED_CONNECTION);
APP_ERROR_CHECK(err_code);
break;
case BLE_GATTS_EVT_TIMEOUT:
// Disconnect on GATT Server timeout event.
NRF_LOG_DEBUG("GATT Server Timeout.");
err_code = sd_ble_gap_disconnect(p_ble_evt->evt.gatts_evt.conn_handle, BLE_HCI_REMOTE_USER_TERMINATED_CONNECTION);
APP_ERROR_CHECK(err_code);
break;
default:
// No implementation needed.
break;
}
}
/**@brief Function for initializing the BLE stack.
* @details Initializes the SoftDevice and the BLE event interrupt. */
static void ble_stack_init(void)
{
ret_code_t err_code;
err_code = nrf_sdh_enable_request();
APP_ERROR_CHECK(err_code);
// Configure the BLE stack using the default settings.
// Fetch the start address of the application RAM.
uint32_t ram_start = 0;
err_code = nrf_sdh_ble_default_cfg_set(APP_BLE_CONN_CFG_TAG, &ram_start);
APP_ERROR_CHECK(err_code);
// Enable BLE stack.
err_code = nrf_sdh_ble_enable(&ram_start);
APP_ERROR_CHECK(err_code);
// Register a handler for BLE events.
NRF_SDH_BLE_OBSERVER(m_ble_observer, APP_BLE_OBSERVER_PRIO, ble_evt_handler, NULL);
}
/**@brief Function for the Event Scheduler initialization. */
static void scheduler_init(void)
{
APP_SCHED_INIT(SCHED_MAX_EVENT_DATA_SIZE, SCHED_QUEUE_SIZE);
}
/**@brief Function for handling events from the BSP module.
* @param[in] event Event generated by button press. */
static void bsp_event_handler(bsp_event_t event)
{
uint32_t err_code;
static uint8_t * p_key = m_sample_key_press_scan_str; // POINTER TO ARRAY OF LETTERS
static uint8_t size = 0;
switch (event)
{
case BSP_EVENT_SLEEP:
sleep_mode_enter();
break;
case BSP_EVENT_DISCONNECT:
err_code = sd_ble_gap_disconnect(m_conn_handle, BLE_HCI_REMOTE_USER_TERMINATED_CONNECTION);
if (err_code != NRF_ERROR_INVALID_STATE)
{
APP_ERROR_CHECK(err_code);
}
break;
case BSP_EVENT_WHITELIST_OFF:
if (m_conn_handle == BLE_CONN_HANDLE_INVALID)
{
err_code = ble_advertising_restart_without_whitelist(&m_advertising);
if (err_code != NRF_ERROR_INVALID_STATE)
{
APP_ERROR_CHECK(err_code);
}
}
break;
case BSP_EVENT_KEY_0:
if (m_conn_handle != BLE_CONN_HANDLE_INVALID)
{
keys_send(1, p_key); // ARRAY OF LETTERS IS PASSED
p_key++; // INCREMENT ARRAY INDEX
size++; //
if (size == MAX_KEYS_IN_ONE_REPORT) // IF IT REACHES TILL THE END
{
p_key = m_sample_key_press_scan_str;//REINITIALIZE THE POINTER TO ORIGINAL ARRAY
size = 0;
}
}
break;
default:
break;
}
}
/**@brief Function for the Peer Manager initialization. */
static void peer_manager_init(void)
{
ble_gap_sec_params_t sec_param;
ret_code_t err_code;
err_code = pm_init();
APP_ERROR_CHECK(err_code);
memset(&sec_param, 0, sizeof(ble_gap_sec_params_t));
// Security parameters to be used for all security procedures.
sec_param.bond = SEC_PARAM_BOND;
sec_param.mitm = SEC_PARAM_MITM;
sec_param.lesc = SEC_PARAM_LESC;
sec_param.keypress = SEC_PARAM_KEYPRESS;
sec_param.io_caps = SEC_PARAM_IO_CAPABILITIES;
sec_param.oob = SEC_PARAM_OOB;
sec_param.min_key_size = SEC_PARAM_MIN_KEY_SIZE;
sec_param.max_key_size = SEC_PARAM_MAX_KEY_SIZE;
sec_param.kdist_own.enc = 1;
sec_param.kdist_own.id = 1;
sec_param.kdist_peer.enc = 1;
sec_param.kdist_peer.id = 1;
err_code = pm_sec_params_set(&sec_param);
APP_ERROR_CHECK(err_code);
err_code = pm_register(pm_evt_handler);
APP_ERROR_CHECK(err_code);
}
/**@brief Function for initializing the Advertising functionality. */
static void advertising_init(void)
{
uint32_t err_code;
uint8_t adv_flags;
ble_advertising_init_t init;
memset(&init, 0, sizeof(init));
adv_flags = BLE_GAP_ADV_FLAGS_LE_ONLY_GENERAL_DISC_MODE;
init.advdata.name_type = BLE_ADVDATA_FULL_NAME;
init.advdata.include_appearance = true;
init.advdata.flags = adv_flags;
init.advdata.uuids_complete.uuid_cnt = sizeof(m_adv_uuids) / sizeof(m_adv_uuids[0]);
init.advdata.uuids_complete.p_uuids = m_adv_uuids;
init.config.ble_adv_whitelist_enabled = true;
init.config.ble_adv_directed_high_duty_enabled = true;
init.config.ble_adv_directed_enabled = false;
init.config.ble_adv_directed_interval = 0;
init.config.ble_adv_directed_timeout = 0;
init.config.ble_adv_fast_enabled = true;
init.config.ble_adv_fast_interval = APP_ADV_FAST_INTERVAL;
init.config.ble_adv_fast_timeout = APP_ADV_FAST_DURATION;
init.config.ble_adv_slow_enabled = true;
init.config.ble_adv_slow_interval = APP_ADV_SLOW_INTERVAL;
init.config.ble_adv_slow_timeout = APP_ADV_SLOW_DURATION;
init.evt_handler = on_adv_evt;
init.error_handler = ble_advertising_error_handler;
err_code = ble_advertising_init(&m_advertising, &init);
APP_ERROR_CHECK(err_code);
ble_advertising_conn_cfg_tag_set(&m_advertising, APP_BLE_CONN_CFG_TAG);
}
/**@brief Function for initializing buttons and leds.
* @param[out] p_erase_bonds Will be true if the clear bonding button was pressed to wake the application up. */
static void buttons_leds_init(bool * p_erase_bonds)
{
ret_code_t err_code;
bsp_event_t startup_event;
err_code = bsp_init(BSP_INIT_LEDS | BSP_INIT_BUTTONS, bsp_event_handler);
APP_ERROR_CHECK(err_code);
err_code = bsp_btn_ble_init(NULL, &startup_event);
APP_ERROR_CHECK(err_code);
*p_erase_bonds = (startup_event == BSP_EVENT_CLEAR_BONDING_DATA);
}
/**@brief Function for initializing the nrf log module. */
static void log_init(void)
{
ret_code_t err_code = NRF_LOG_INIT(NULL);
APP_ERROR_CHECK(err_code);
NRF_LOG_DEFAULT_BACKENDS_INIT();
}
/**@brief Function for initializing power management. */
static void power_management_init(void)
{
ret_code_t err_code;
err_code = nrf_pwr_mgmt_init();
APP_ERROR_CHECK(err_code);
}
/**@brief Function for handling the idle state (main loop).
* @details If there is no pending log operation, then sleep until next the next event occurs. */
static void idle_state_handle(void)
{
app_sched_execute();
if (NRF_LOG_PROCESS() == false)
{
nrf_pwr_mgmt_run();
}
}
/**@brief Function for application main entry. */
int main(void)
{
bool erase_bonds;
log_init();
timers_init();
buttons_leds_init(&erase_bonds);
power_management_init();
ble_stack_init();
scheduler_init();
gap_params_init();
gatt_init();
advertising_init();
services_init();
sensor_simulator_init();
conn_params_init();
buffer_init();
peer_manager_init();
// Start execution.
NRF_LOG_INFO("HID Keyboard example started.");
timers_start();
advertising_start(erase_bonds);
for (;;)
{
idle_state_handle();
}
}
