I am working on project in which i want to read data from sd card and send it to mobile through BLE , I am using ble_nus_send to send data but when i decrease the delay then its giving me error 19 and when i increase delay then it is running smoothly .
Can i achieve something between 1-2 Mbps through ble_nus_Send or have to do with some other approach .
You will require a separate DK or dongle
I don't have extra board to do this i have tried this on my own board but when i try to that on my own 
board its giving me error and my nrf52840 turned off , I am using waveshare board of nrf52840 .
But that's not what i want , I want to send data at good data rate .
You can configure this in the sdk_config.h file with the NRF_SDH_BLE_GAP_EVENT_LENGTH define
I have changed it to 50 , It was 400 before but still data rate is not that good enough and the second and very important thing i have not seen NRF_SDH_BLE_GAP_EVENT_LENGTH in my code maybe that's not required . if required where to place it in my code .
I was able to dig up this Image Transfer Demo that contains a NUS service modified for throughput, or you could take a look at the experimental ATT Thoughtput example from the SDK - it does not use the NUS service, but you could look at it for the connection parameters.
Furthermore, I also found a ticket in which the attached .zip file was provided to another user by a colleague of mine - this is a version of the NUS examples modified for throughput - its compatible with SDK v16.0.0.
nus_throughput_demo.zip
So the thing is i have tried all ways . I am not understanding Image transfer demo and i have changed my code according to throughput code but yet not successful .
I have tried your zip file its max throughput is 19kbps 
sd_ble_gap_scan_start returns the NRF_ERROR_INVALID_PARAM error when invalid parameter(s) are passed to the function.
Please also show the snippet in code in which you changed to 2M PHY.
/**
* Copyright (c) 2014 - 2020, 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
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* 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.
*
*/
/**
* @brief BLE Heart Rate Collector application main file.
*
* This file contains the source code for a sample heart rate collector.
*/
#include <stdbool.h>
#include <stdint.h>
#include <stdio.h>
#include <string.h>
#include "bsp.h"
#include "diskio_blkdev.h"
#include "ff.h"
#include "nrf.h"
#include "nrf_block_dev_sdc.h"
#include "nrf_delay.h"
#include "nrf_drv_gpiote.h"
#include "nrf_drv_timer.h"
#include "app_uart.h"
#include "ble_advdata.h"
#include "ble_advertising.h"
#include "ble_conn_params.h"
#include "ble_nus.h"
#include "nrf_ble_qwr.h"
#include "ble_gatts.h"
#include "app_error.h"
#include "app_timer.h"
#include "app_util.h"
#include "ble.h"
#include "ble_bas_c.h"
#include "ble_conn_state.h"
#include "ble_db_discovery.h"
#include "ble_hci.h"
#include "ble_hrs_c.h"
#include "ble_srv_common.h"
#include "bsp_btn_ble.h"
#include "fds.h"
#include "nordic_common.h"
#include "nrf_ble_gatt.h"
#include "nrf_ble_lesc.h"
#include "nrf_ble_scan.h"
#include "nrf_fstorage.h"
#include "nrf_log.h"
#include "nrf_log_ctrl.h"
#include "nrf_log_default_backends.h"
#include "nrf_pwr_mgmt.h"
#include "nrf_sdh.h"
#include "nrf_sdh_ble.h"
#include "nrf_sdh_soc.h"
#include "nrf_sdm.h"
#include "peer_manager.h"
#include "peer_manager_handler.h"
#if defined(UART_PRESENT)
#include "nrf_uart.h"
#endif
#if defined(UARTE_PRESENT)
#include "nrf_uarte.h"
#endif
#define FILE_NAME "hr.CSV"
#define TEST_STRING "SD card example."
#define NUS_SERVICE_UUID_TYPE BLE_UUID_TYPE_VENDOR_BEGIN
#ifdef BSP_BUTTON_0
#define PIN_IN BSP_BUTTON_0
#endif
#ifndef PIN_IN
#error "Please indicate input pin"
#endif
#ifdef BSP_LED_1
#define PIN_OUT BSP_LED_1
#endif
#ifndef PIN_OUT
#error "Please indicate output pin"
#endif /**< Context for the Queued Write module.*/
BLE_ADVERTISING_DEF(m_advertising);
BLE_NUS_DEF(m_nus, 6);
NRF_BLE_QWRS_DEF(m_qwr, 6);
static ble_uuid_t m_adv_uuids[] = /**< Universally unique service identifier. */
{
{BLE_UUID_NUS_SERVICE, NUS_SERVICE_UUID_TYPE}};
#define APP_ADV_INTERVAL 64 /**< The advertising interval (in units of 0.625 ms. This value corresponds to 40 ms). */
#define APP_ADV_DURATION 18000
volatile uint8_t button_pressed = 0;
volatile int timer_call = 0;
FRESULT ff_result;
static FIL file;
uint16_t heart_rate;
char s_heartrate[4];
volatile uint8_t c;
uint32_t bytes_written;
const nrf_drv_timer_t TIMER_LED = NRF_DRV_TIMER_INSTANCE(1);
#define SDC_SCK_PIN ARDUINO_13_PIN ///< SDC serial clock (SCK) pin.
#define SDC_MOSI_PIN ARDUINO_11_PIN ///< SDC serial data in (DI) pin.
#define SDC_MISO_PIN ARDUINO_12_PIN ///< SDC serial data out (DO) pin.
#define SDC_CS_PIN ARDUINO_10_PIN ///< SDC chip select (CS) pin.
#define MIN_CONN_INTERVAL (uint16_t)(MSEC_TO_UNITS(50, UNIT_1_25_MS))
#define MAX_CONN_INTERVAL (uint16_t)(MSEC_TO_UNITS(50, UNIT_1_25_MS)) /**< Maximum acceptable connection interval (75 ms), Connection interval uses 1.25 ms units. */
#define SLAVE_LATENCY 0 /**< Slave latency. */
#define CONN_SUP_TIMEOUT MSEC_TO_UNITS(4000, UNIT_10_MS) /**< Connection supervisory timeout (4 seconds), Supervision Timeout uses 10 ms units. */
#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
#define DEVICE_NAME "nRF Relay"
static uint16_t m_ble_nus_max_data_len = BLE_GATT_ATT_MTU_DEFAULT ;
#define APP_BLE_CONN_CFG_TAG 1 /**< A tag identifying the SoftDevice BLE configuration. */
#define APP_BLE_OBSERVER_PRIO 3 /**< Application's BLE observer priority. You shouldn't need to modify this value. */
#define APP_SOC_OBSERVER_PRIO 1 /**< Applications' SoC observer priority. You shouldn't need to modify this value. */
#define LESC_DEBUG_MODE 0 /**< Set to 1 to use LESC debug keys, allows you to use a sniffer to inspect traffic. */
#define SEC_PARAM_BOND 1 /**< Perform bonding. */
#define SEC_PARAM_MITM 0 /**< Man In The Middle protection not required. */
#define SEC_PARAM_LESC 1 /**< LE Secure Connections 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 in octets. */
#define SEC_PARAM_MAX_KEY_SIZE 16 /**< Maximum encryption key size in octets. */
#define SCAN_DURATION_WITELIST 3000 /**< Duration of the scanning in units of 10 milliseconds. */
#define HART_RATE_SERVICE_UUID_IDX 0
#define TARGET_UUID BLE_UUID_HEART_RATE_SERVICE /**< Target device uuid that application is looking for. */
static uint16_t m_conn_handle_hrs_c = BLE_CONN_HANDLE_INVALID; /**< Connection handle for the HRS central application */
static uint16_t m_conn_handle_rscs_c = BLE_CONN_HANDLE_INVALID;
char init[] = "Long,Lat,Alt,Accelx,Accely,Accelz,GYROx,GYROy,GYROz,Magx,Magy,Magz,Heartrate,Bat % ";
char data[] = "2221";
/**@brief Macro to unpack 16bit unsigned UUID from octet stream. */
#define UUID16_EXTRACT(DST, SRC) \
do { \
(*(DST)) = (SRC)[1]; \
(*(DST)) <<= 8; \
(*(DST)) |= (SRC)[0]; \
} while (0)
NRF_BLE_GQ_DEF(m_ble_gatt_queue, /**< BLE GATT Queue instance. */
NRF_SDH_BLE_CENTRAL_LINK_COUNT,
NRF_BLE_GQ_QUEUE_SIZE);
BLE_HRS_C_DEF(m_hrs_c); /**< Structure used to identify the heart rate client module. */
BLE_BAS_C_DEF(m_bas_c); /**< Structure used to identify the Battery Service client module. */
NRF_BLE_GATT_DEF(m_gatt); /**< GATT module instance. */
BLE_DB_DISCOVERY_ARRAY_DEF(m_db_disc, 2); /**< Database discovery module instances. */
NRF_BLE_SCAN_DEF(m_scan); /**< DB discovery module instance. */
/**< Scanning module instance. */
static uint16_t m_conn_handle; /**< Current connection handle. */
static bool m_whitelist_disabled; /**< True if whitelist has been temporarily disabled. */
static bool m_memory_access_in_progress; /**< Flag to keep track of ongoing operations on persistent memory. */
void in_pin_handler(nrf_drv_gpiote_pin_t pin, nrf_gpiote_polarity_t action) {
c = 1;
}
NRF_BLOCK_DEV_SDC_DEFINE(
m_block_dev_sdc,
NRF_BLOCK_DEV_SDC_CONFIG(
SDC_SECTOR_SIZE,
APP_SDCARD_CONFIG(SDC_MOSI_PIN, SDC_MISO_PIN, SDC_SCK_PIN, SDC_CS_PIN)),
NFR_BLOCK_DEV_INFO_CONFIG("Nordic", "SDC", "1.00"));
void timer_led_event_handler(nrf_timer_event_t event_type, void *p_context) {
switch (event_type) {
case NRF_TIMER_EVENT_COMPARE0:
timer_call = 1;
break;
default:
//Do nothing.
break;
}
}
static void fatfs_example() {
static FATFS fs;
static DIR dir;
static FILINFO fno;
DSTATUS disk_state = STA_NOINIT;
// Initialize FATFS disk I/O interface by providing the block device.
static diskio_blkdev_t drives[] =
{
DISKIO_BLOCKDEV_CONFIG(NRF_BLOCKDEV_BASE_ADDR(m_block_dev_sdc, block_dev), NULL)};
diskio_blockdev_register(drives, ARRAY_SIZE(drives));
NRF_LOG_INFO("Initializing disk 0 (SDC)...");
for (uint32_t retries = 3; retries && disk_state; --retries) {
disk_state = disk_initialize(0);
}
if (disk_state) {
NRF_LOG_INFO("Disk initialization failed.");
return;
}
uint32_t blocks_per_mb = (1024uL * 1024uL) / m_block_dev_sdc.block_dev.p_ops->geometry(&m_block_dev_sdc.block_dev)->blk_size;
uint32_t capacity = m_block_dev_sdc.block_dev.p_ops->geometry(&m_block_dev_sdc.block_dev)->blk_count / blocks_per_mb;
NRF_LOG_INFO("Capacity: %d MB", capacity);
NRF_LOG_INFO("Mounting volume...");
ff_result = f_mount(&fs, "", 1);
if (ff_result) {
NRF_LOG_INFO("Mount failed.");
return;
}
NRF_LOG_INFO("\r\n Listing directory: /");
ff_result = f_opendir(&dir, "/");
if (ff_result) {
NRF_LOG_INFO("Directory listing failed!");
return;
}
do {
ff_result = f_readdir(&dir, &fno);
if (ff_result != FR_OK) {
NRF_LOG_INFO("Directory read failed.");
return;
}
if (fno.fname[0]) {
if (fno.fattrib & AM_DIR) {
NRF_LOG_RAW_INFO(" <DIR> %s", (uint32_t)fno.fname);
} else {
NRF_LOG_RAW_INFO("%9lu %s", fno.fsize, (uint32_t)fno.fname);
}
}
} while (fno.fname[0]);
NRF_LOG_RAW_INFO("");
uint8_t string[15];
NRF_LOG_INFO(string);
NRF_LOG_INFO("Writing to file " FILE_NAME "...");
ff_result = f_open(&file, FILE_NAME, FA_READ);
if (ff_result != FR_OK) {
NRF_LOG_INFO("Unable to open or create file: " FILE_NAME ".");
return;
}
uint16_t size;
size = f_size(&file);
char *data = NULL;
data = malloc(size); /* allocate memory to store image data */
NRF_LOG_INFO("File size: %d bytes", size);
int b = 86;
for (int a = 85; a < size; a = a + 85) {
//NRF_LOG_INFO("%d \n",a);
//NRF_LOG_INFO("%d \n",b);
f_lseek(&file, b);
ff_result = f_read(&file, string, 85, (UINT *)&bytes_written);
if (ff_result != FR_OK) {
NRF_LOG_INFO("read failed\r\n.");
} else {
// NRF_LOG_INFO("%d bytes read.", bytes_written);
}
//for(int i=0;i<bytes_written;i++)
//{
// NRF_LOG_INFO("%d -> %c",i,string[i]);
//nrf_delay_ms(20);
//}
b = b + 85;
}
NRF_LOG_INFO("done");
(void)f_close(&file);
//ff_result = f_write(&file, string, sizeof(string), (UINT *) &bytes_written);
//if (ff_result != FR_OK)
//{
// NRF_LOG_INFO("Write failed\r\n.");
//}
//else
//{
// NRF_LOG_INFO("%d bytes written.", bytes_written);
//}
//ff_result = f_write(&file, "\n",1,&bytes_written);
//(void) f_close(&file);
//for(int a=1 ; a<=600 ; a++)
//{
//for (int b=1 ;b<=14;b++)
//{
//ff_result = f_write(&file, data, sizeof(data), (UINT *) &bytes_written);
//if (ff_result != FR_OK)
//{
// NRF_LOG_INFO("Write failed\r\n.");
//}
//else
//{
// NRF_LOG_INFO("%d bytes written.", bytes_written);
//}
//ff_result = f_write(&file, ",",1,&bytes_written);
//}
//ff_result = f_write(&file, "\n",1,&bytes_written);
//nrf_delay_ms(60);
//}
}
/**< Scan parameters requested for scanning and connection. */
static ble_gap_scan_params_t const m_scan_param =
{
.active = 0x01,
#if (NRF_SD_BLE_API_VERSION > 7)
.interval_us = NRF_BLE_SCAN_SCAN_INTERVAL * UNIT_0_625_MS,
.window_us = NRF_BLE_SCAN_SCAN_WINDOW * UNIT_0_625_MS,
#else
.interval = NRF_BLE_SCAN_SCAN_INTERVAL,
.window = NRF_BLE_SCAN_SCAN_WINDOW,
#endif
.filter_policy = BLE_GAP_SCAN_FP_ACCEPT_ALL,
.timeout = SCAN_DURATION_WITELIST,
.scan_phys = BLE_GAP_PHY_1MBPS ,
.extended = true,
};
/**@brief Names which the central applications will scan for, and which will be advertised by the peripherals.
* if these are set to empty strings, the UUIDs defined below will be used
*/
static char const m_target_periph_name[] = ""; /**< If you want to connect to a peripheral using a given advertising name, type its name here. */
static bool is_connect_per_addr = true; /**< If you want to connect to a peripheral with a given address, set this to true and put the correct address in the variable below. */
static ble_gap_addr_t const m_target_periph_addr =
{
/* Possible values for addr_type:
BLE_GAP_ADDR_TYPE_PUBLIC,
BLE_GAP_ADDR_TYPE_RANDOM_STATIC,
BLE_GAP_ADDR_TYPE_RANDOM_PRIVATE_RESOLVABLE,
BLE_GAP_ADDR_TYPE_RANDOM_PRIVATE_NON_RESOLVABLE. */
.addr_type = BLE_GAP_ADDR_TYPE_RANDOM_STATIC,
.addr = {0x8D, 0xFE, 0x23, 0x86, 0x77, 0xD9}};
static void scan_start(void);
/**@brief 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] p_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(0xDEADBEEF, line_num, p_file_name);
}
/**@brief Function for handling the Heart Rate Service Client and Battery Service Client errors.
*
* @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 database discovery events.
*
* @details This function is callback function to handle events from the database discovery module.
* Depending on the UUIDs that are discovered, this function should forward the events
* to their respective services.
*
* @param[in] p_event Pointer to the database discovery event.
*/
static void db_disc_handler(ble_db_discovery_evt_t *p_evt) {
ble_hrs_on_db_disc_evt(&m_hrs_c, p_evt);
ble_bas_on_db_disc_evt(&m_bas_c, p_evt);
}
/**@brief Function for handling Peer Manager events.
*
* @param[in] p_evt Peer Manager event.
*/
static void adv_scan_start(void) {
ret_code_t err_code;
//check if there are no flash operations in progress
if (!nrf_fstorage_is_busy(NULL)) {
// Start scanning for peripherals and initiate connection to devices which
// advertise Heart Rate or Running speed and cadence UUIDs.
scan_start();
// Turn on the LED to signal scanning.
bsp_board_led_on(BSP_BOARD_LED_0);
// Start advertising.
err_code = ble_advertising_start(&m_advertising, BLE_ADV_MODE_FAST);
APP_ERROR_CHECK(err_code);
}
}
static void pm_evt_handler(pm_evt_t const *p_evt) {
pm_handler_on_pm_evt(p_evt);
pm_handler_disconnect_on_sec_failure(p_evt);
pm_handler_flash_clean(p_evt);
switch (p_evt->evt_id) {
case PM_EVT_PEERS_DELETE_SUCCEEDED:
// Bonds are deleted. Start scanning.
adv_scan_start();
break;
default:
break;
}
}
/**
* @brief Function for shutdown events.
*
* @param[in] event Shutdown type.
*/
static bool shutdown_handler(nrf_pwr_mgmt_evt_t event) {
ret_code_t err_code;
err_code = bsp_indication_set(BSP_INDICATE_IDLE);
APP_ERROR_CHECK(err_code);
switch (event) {
case NRF_PWR_MGMT_EVT_PREPARE_WAKEUP:
// Prepare wakeup buttons.
err_code = bsp_btn_ble_sleep_mode_prepare();
APP_ERROR_CHECK(err_code);
break;
default:
break;
}
return true;
}
NRF_PWR_MGMT_HANDLER_REGISTER(shutdown_handler, APP_SHUTDOWN_HANDLER_PRIORITY);
/**@brief Function for handling BLE events.
*
* @param[in] p_ble_evt Bluetooth stack event.
* @param[in] p_context Unused.
*/
static void multi_qwr_conn_handle_assign(uint16_t conn_handle) {
for (uint32_t i = 0; i < NRF_SDH_BLE_TOTAL_LINK_COUNT; i++) {
if (m_qwr[i].conn_handle == BLE_CONN_HANDLE_INVALID) {
ret_code_t err_code = nrf_ble_qwr_conn_handle_assign(&m_qwr[i], conn_handle);
APP_ERROR_CHECK(err_code);
break;
}
}
}
volatile uint8_t peristat=0;
static void on_ble_peripheral_evt(ble_evt_t const *p_ble_evt) {
uint32_t err_code;
switch (p_ble_evt->header.evt_id) {
case BLE_GAP_EVT_CONNECTED:
NRF_LOG_INFO("peripheral Connected");
peristat=1;
err_code = bsp_indication_set(BSP_INDICATE_CONNECTED);
APP_ERROR_CHECK(err_code);
ble_gap_phys_t const phys =
{
.rx_phys = BLE_GAP_PHY_2MBPS | BLE_GAP_PHY_1MBPS | BLE_GAP_PHY_CODED,
.tx_phys = BLE_GAP_PHY_2MBPS | BLE_GAP_PHY_1MBPS | BLE_GAP_PHY_CODED,
};
err_code = sd_ble_gap_phy_update(p_ble_evt->evt.gap_evt.conn_handle, &phys);
APP_ERROR_CHECK(err_code);
m_conn_handle = p_ble_evt->evt.gap_evt.conn_handle;
multi_qwr_conn_handle_assign(p_ble_evt->evt.gap_evt.conn_handle);
APP_ERROR_CHECK(err_code);
break;
case BLE_GAP_EVT_DISCONNECTED:
NRF_LOG_INFO("Disconnected");
peristat=0;
// LED indication will be changed when advertising starts.
m_conn_handle = BLE_CONN_HANDLE_INVALID;
break;
case BLE_GAP_EVT_PHY_UPDATE_REQUEST: {
NRF_LOG_DEBUG("PHY update request.");
ble_gap_phys_t const phys =
{
.rx_phys = BLE_GAP_PHY_2MBPS | BLE_GAP_PHY_1MBPS | BLE_GAP_PHY_CODED,
.tx_phys = BLE_GAP_PHY_2MBPS | BLE_GAP_PHY_1MBPS | BLE_GAP_PHY_CODED,
};
err_code = sd_ble_gap_phy_update(p_ble_evt->evt.gap_evt.conn_handle, &phys);
APP_ERROR_CHECK(err_code);
} break;
case BLE_GAP_EVT_SEC_PARAMS_REQUEST:
// Pairing not supported
err_code = sd_ble_gap_sec_params_reply(m_conn_handle, BLE_GAP_SEC_STATUS_PAIRING_NOT_SUPP, NULL, NULL);
APP_ERROR_CHECK(err_code);
break;
case BLE_GATTS_EVT_SYS_ATTR_MISSING:
// No system attributes have been stored.
err_code = sd_ble_gatts_sys_attr_set(m_conn_handle, NULL, 0, 0);
APP_ERROR_CHECK(err_code);
break;
case BLE_GATTC_EVT_TIMEOUT:
// Disconnect on GATT Client timeout event.
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.
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;
}
}
static void on_ble_central_evt(ble_evt_t const *p_ble_evt) {
ret_code_t err_code;
ble_gap_evt_t const *p_gap_evt = &p_ble_evt->evt.gap_evt;
switch (p_ble_evt->header.evt_id) {
// Upon connection, check which peripheral is connected (HR or RSC), initiate DB
// discovery, update LEDs status, and resume scanning, if necessary.
case BLE_GAP_EVT_CONNECTED: {
NRF_LOG_INFO("Central connected");
// If no Heart Rate sensor or RSC sensor is currently connected, try to find them on this peripheral.
if ((m_conn_handle_hrs_c == BLE_CONN_HANDLE_INVALID) || (m_conn_handle_rscs_c == BLE_CONN_HANDLE_INVALID)) {
NRF_LOG_INFO("Attempt to find HRS or RSC on conn_handle 0x%x", p_gap_evt->conn_handle);
err_code = ble_db_discovery_start(&m_db_disc[0], p_gap_evt->conn_handle);
if (err_code == NRF_ERROR_BUSY) {
err_code = ble_db_discovery_start(&m_db_disc[1], p_gap_evt->conn_handle);
APP_ERROR_CHECK(err_code);
} else {
APP_ERROR_CHECK(err_code);
}
}
// Assign connection handle to the QWR module.
multi_qwr_conn_handle_assign(p_gap_evt->conn_handle);
// Update LEDs status, and check whether to look for more peripherals to connect to.
bsp_board_led_on(BSP_BOARD_LED_1);
if (ble_conn_state_central_conn_count() == NRF_SDH_BLE_CENTRAL_LINK_COUNT) {
bsp_board_led_off(BSP_BOARD_LED_0);
} else {
// Resume scanning.
bsp_board_led_on(BSP_BOARD_LED_0);
scan_start();
}
} break; // BLE_GAP_EVT_CONNECTED
// Upon disconnection, reset the connection handle of the peer that disconnected,
// update the LEDs status and start scanning again.
case BLE_GAP_EVT_DISCONNECTED: {
if (p_gap_evt->conn_handle == m_conn_handle_hrs_c) {
NRF_LOG_INFO("HRS central disconnected (reason: %d)",
p_gap_evt->params.disconnected.reason);
m_conn_handle_hrs_c = BLE_CONN_HANDLE_INVALID;
err_code = nrf_ble_scan_filter_set(&m_scan,
SCAN_UUID_FILTER,
&m_adv_uuids[HART_RATE_SERVICE_UUID_IDX]);
APP_ERROR_CHECK(err_code);
}
if ((m_conn_handle_rscs_c == BLE_CONN_HANDLE_INVALID) || (m_conn_handle_hrs_c == BLE_CONN_HANDLE_INVALID)) {
// Start scanning.
scan_start();
// Update LEDs status.
bsp_board_led_on(BSP_BOARD_LED_0);
}
if (ble_conn_state_central_conn_count() == 0) {
bsp_board_led_off(BSP_BOARD_LED_1);
}
} break; // BLE_GAP_EVT_DISCONNECTED
case BLE_GAP_EVT_TIMEOUT: {
// No timeout for scanning is specified, so only connection attemps can timeout.
if (p_gap_evt->params.timeout.src == BLE_GAP_TIMEOUT_SRC_CONN) {
NRF_LOG_INFO("Connection Request timed out.");
}
} break;
case BLE_GAP_EVT_CONN_PARAM_UPDATE_REQUEST: {
// Accept parameters requested by peer.
err_code = sd_ble_gap_conn_param_update(p_gap_evt->conn_handle,
&p_gap_evt->params.conn_param_update_request.conn_params);
APP_ERROR_CHECK(err_code);
} break;
case BLE_GAP_EVT_PHY_UPDATE_REQUEST: {
NRF_LOG_DEBUG("PHY update request.");
ble_gap_phys_t const phys =
{
.rx_phys = BLE_GAP_PHY_2MBPS | BLE_GAP_PHY_1MBPS | BLE_GAP_PHY_CODED,
.tx_phys = BLE_GAP_PHY_2MBPS | BLE_GAP_PHY_1MBPS | BLE_GAP_PHY_CODED,
};
err_code = sd_ble_gap_phy_update(p_ble_evt->evt.gap_evt.conn_handle, &phys);
APP_ERROR_CHECK(err_code);
} 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 handling BLE events from peripheral applications.
* @details Updates the status LEDs used to report the activity of the peripheral applications.
*
* @param[in] p_ble_evt Bluetooth stack event.
*/
static bool ble_evt_is_advertising_timeout(ble_evt_t const *p_ble_evt) {
return (p_ble_evt->header.evt_id == BLE_GAP_EVT_ADV_SET_TERMINATED);
}
static void ble_evt_handler(ble_evt_t const *p_ble_evt, void *p_context) {
uint16_t conn_handle = p_ble_evt->evt.gap_evt.conn_handle;
uint16_t role = ble_conn_state_role(conn_handle);
// Based on the role this device plays in the connection, dispatch to the right handler.
if (role == BLE_GAP_ROLE_PERIPH || ble_evt_is_advertising_timeout(p_ble_evt)) {
//ble_hrs_on_ble_evt(p_ble_evt, &m_hrs);
ble_nus_on_ble_evt(p_ble_evt, &m_nus);
on_ble_peripheral_evt(p_ble_evt);
} else if ((role == BLE_GAP_ROLE_CENTRAL) || (p_ble_evt->header.evt_id == BLE_GAP_EVT_ADV_REPORT)) {
ble_hrs_c_on_ble_evt(p_ble_evt, &m_hrs_c);
//ble_nus_on_ble_evt(p_ble_evt,&m_nus);
on_ble_central_evt(p_ble_evt);
}
}
/**@brief SoftDevice SoC event handler.
*
* @param[in] evt_id SoC event.
* @param[in] p_context Context.
*/
static void soc_evt_handler(uint32_t evt_id, void *p_context) {
switch (evt_id) {
case NRF_EVT_FLASH_OPERATION_SUCCESS:
/* fall through */
case NRF_EVT_FLASH_OPERATION_ERROR:
if (m_memory_access_in_progress) {
m_memory_access_in_progress = false;
scan_start();
}
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);
NRF_LOG_INFO("%d", err_code);
APP_ERROR_CHECK(err_code);
// Register handlers for BLE and SoC events.
NRF_SDH_BLE_OBSERVER(m_ble_observer, APP_BLE_OBSERVER_PRIO, ble_evt_handler, NULL);
NRF_SDH_SOC_OBSERVER(m_soc_observer, APP_SOC_OBSERVER_PRIO, soc_evt_handler, NULL);
}
/**@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 Clear bonding 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 disabling the use of whitelist for scanning.
*/
static void whitelist_disable(void) {
if (!m_whitelist_disabled) {
NRF_LOG_INFO("Whitelist temporarily disabled.");
m_whitelist_disabled = true;
nrf_ble_scan_stop();
scan_start();
}
}
/**@brief Function for handling events from the BSP module.
*
* @param[in] event Event generated by button press.
*/
void bsp_event_handler(bsp_event_t event) {
ret_code_t err_code;
switch (event) {
case BSP_EVENT_SLEEP:
nrf_pwr_mgmt_shutdown(NRF_PWR_MGMT_SHUTDOWN_GOTO_SYSOFF);
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:
whitelist_disable();
break;
default:
break;
}
}
/**@brief Heart Rate Collector Handler.
*/
static void hrs_c_evt_handler(ble_hrs_c_t *p_hrs_c, ble_hrs_c_evt_t *p_hrs_c_evt) {
NRF_LOG_INFO("hrs_c_evt_handler");
ret_code_t err_code;
switch (p_hrs_c_evt->evt_type) {
case BLE_HRS_C_EVT_DISCOVERY_COMPLETE: {
NRF_LOG_DEBUG("Heart rate service discovered.");
err_code = ble_hrs_c_handles_assign(p_hrs_c,
p_hrs_c_evt->conn_handle,
&p_hrs_c_evt->params.peer_db);
APP_ERROR_CHECK(err_code);
// Initiate bonding.
err_code = pm_conn_secure(p_hrs_c_evt->conn_handle, false);
if (err_code != NRF_ERROR_BUSY) {
APP_ERROR_CHECK(err_code);
}
// Heart rate service discovered. Enable notification of Heart Rate Measurement.
err_code = ble_hrs_c_hrm_notif_enable(p_hrs_c);
APP_ERROR_CHECK(err_code);
} break;
case BLE_HRS_C_EVT_HRM_NOTIFICATION: {
NRF_LOG_INFO("Heart Rate = %d.", p_hrs_c_evt->params.hrm.hr_value);
heart_rate = p_hrs_c_evt->params.hrm.hr_value;
if (p_hrs_c_evt->params.hrm.rr_intervals_cnt != 0) {
uint32_t rr_avg = 0;
for (uint32_t i = 0; i < p_hrs_c_evt->params.hrm.rr_intervals_cnt; i++) {
rr_avg += p_hrs_c_evt->params.hrm.rr_intervals[i];
}
rr_avg = rr_avg / p_hrs_c_evt->params.hrm.rr_intervals_cnt;
NRF_LOG_DEBUG("rr_interval (avg) = %d.", rr_avg);
}
} break;
default:
break;
}
}
/**@brief Battery level Collector Handler.
*/
static void bas_c_evt_handler(ble_bas_c_t *p_bas_c, ble_bas_c_evt_t *p_bas_c_evt) {
NRF_LOG_INFO("bas_c_evt_handler");
ret_code_t err_code;
switch (p_bas_c_evt->evt_type) {
case BLE_BAS_C_EVT_DISCOVERY_COMPLETE: {
err_code = ble_bas_c_handles_assign(p_bas_c,
p_bas_c_evt->conn_handle,
&p_bas_c_evt->params.bas_db);
APP_ERROR_CHECK(err_code);
// Battery service discovered. Enable notification of Battery Level.
NRF_LOG_DEBUG("Battery Service discovered. Reading battery level.");
err_code = ble_bas_c_bl_read(p_bas_c);
APP_ERROR_CHECK(err_code);
NRF_LOG_DEBUG("Enabling Battery Level Notification.");
err_code = ble_bas_c_bl_notif_enable(p_bas_c);
APP_ERROR_CHECK(err_code);
} break;
case BLE_BAS_C_EVT_BATT_NOTIFICATION:
NRF_LOG_INFO("Battery Level received %d %%.", p_bas_c_evt->params.battery_level);
break;
case BLE_BAS_C_EVT_BATT_READ_RESP:
NRF_LOG_INFO("Battery Level Read as %d %%.", p_bas_c_evt->params.battery_level);
break;
default:
break;
}
}
/**
* @brief Heart rate collector initialization.
*/
static void hrs_c_init(void) {
NRF_LOG_INFO("HRS_C_INIT");
ble_hrs_c_init_t hrs_c_init_obj;
hrs_c_init_obj.evt_handler = hrs_c_evt_handler;
hrs_c_init_obj.error_handler = service_error_handler;
hrs_c_init_obj.p_gatt_queue = &m_ble_gatt_queue;
ret_code_t err_code = ble_hrs_c_init(&m_hrs_c, &hrs_c_init_obj);
APP_ERROR_CHECK(err_code);
}
/**
* @brief Battery level collector initialization.
*/
static void bas_c_init(void) {
NRF_LOG_INFO("BAS_C_INIT");
ble_bas_c_init_t bas_c_init_obj;
bas_c_init_obj.evt_handler = bas_c_evt_handler;
bas_c_init_obj.error_handler = service_error_handler;
bas_c_init_obj.p_gatt_queue = &m_ble_gatt_queue;
ret_code_t err_code = ble_bas_c_init(&m_bas_c, &bas_c_init_obj);
APP_ERROR_CHECK(err_code);
}
/**
* @brief Database discovery collector initialization.
*/
static void db_discovery_init(void) {
ble_db_discovery_init_t db_init;
memset(&db_init, 0, sizeof(db_init));
db_init.evt_handler = db_disc_handler;
db_init.p_gatt_queue = &m_ble_gatt_queue;
ret_code_t err_code = ble_db_discovery_init(&db_init);
APP_ERROR_CHECK(err_code);
}
/**@brief Retrieve a 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 Function to start scanning.
*/
static void scan_start(void) {
ret_code_t err_code;
if (nrf_fstorage_is_busy(NULL)) {
m_memory_access_in_progress = true;
return;
}
NRF_LOG_INFO("Starting scan.");
err_code = nrf_ble_scan_start(&m_scan);
APP_ERROR_CHECK(err_code);
err_code = bsp_indication_set(BSP_INDICATE_SCANNING);
NRF_LOG_INFO("%d", err_code);
APP_ERROR_CHECK(err_code);
}
/**@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 the power management module. */
static void power_management_init(void) {
ret_code_t err_code;
err_code = nrf_pwr_mgmt_init();
APP_ERROR_CHECK(err_code);
}
/**@brief GATT module event handler.
*/
static void gatt_evt_handler(nrf_ble_gatt_t *p_gatt, nrf_ble_gatt_evt_t const *p_evt) {
if ((m_conn_handle == p_evt->conn_handle) && (p_evt->evt_id == NRF_BLE_GATT_EVT_ATT_MTU_UPDATED)) {
m_ble_nus_max_data_len = p_evt->params.att_mtu_effective - OPCODE_LENGTH - HANDLE_LENGTH;
NRF_LOG_INFO("Data len is set to 0x%X(%d)", m_ble_nus_max_data_len, m_ble_nus_max_data_len);
}
NRF_LOG_DEBUG("ATT MTU exchange completed. central 0x%x peripheral 0x%x",
p_gatt->att_mtu_desired_central,
p_gatt->att_mtu_desired_periph);
switch (p_evt->evt_id) {
case NRF_BLE_GATT_EVT_ATT_MTU_UPDATED: {
NRF_LOG_INFO("GATT ATT MTU on connection 0x%x changed to %d.",
p_evt->conn_handle,
p_evt->params.att_mtu_effective);
} break;
case NRF_BLE_GATT_EVT_DATA_LENGTH_UPDATED: {
NRF_LOG_INFO("Data length for connection 0x%x updated to %d.",
p_evt->conn_handle,
p_evt->params.data_length);
} break;
default:
break;
}
}
static void whitelist_load()
{
ret_code_t ret;
pm_peer_id_t peers[8];
uint32_t peer_cnt;
memset(peers, PM_PEER_ID_INVALID, sizeof(peers));
peer_cnt = (sizeof(peers) / sizeof(pm_peer_id_t));
// Load all peers from flash and whitelist them.
peer_list_get(peers, &peer_cnt);
ret = pm_whitelist_set(peers, peer_cnt);
APP_ERROR_CHECK(ret);
// Setup the device identies list.
// Some SoftDevices do not support this feature.
ret = pm_device_identities_list_set(peers, peer_cnt);
if (ret != NRF_ERROR_NOT_SUPPORTED)
{
APP_ERROR_CHECK(ret);
}
}
static void on_whitelist_req(void)
{
ret_code_t err_code;
// Whitelist buffers.
ble_gap_addr_t whitelist_addrs[8];
ble_gap_irk_t whitelist_irks[8];
memset(whitelist_addrs, 0x00, sizeof(whitelist_addrs));
memset(whitelist_irks, 0x00, sizeof(whitelist_irks));
uint32_t addr_cnt = (sizeof(whitelist_addrs) / sizeof(ble_gap_addr_t));
uint32_t irk_cnt = (sizeof(whitelist_irks) / sizeof(ble_gap_irk_t));
// Reload the whitelist and whitelist all peers.
whitelist_load();
// Get the whitelist previously set using pm_whitelist_set().
err_code = pm_whitelist_get(whitelist_addrs, &addr_cnt,
whitelist_irks, &irk_cnt);
if (((addr_cnt == 0) && (irk_cnt == 0)) ||
(m_whitelist_disabled))
{
// Don't use whitelist.
err_code = nrf_ble_scan_params_set(&m_scan, NULL);
APP_ERROR_CHECK(err_code);
}
}
static void scan_evt_handler(scan_evt_t const *p_scan_evt) {
ret_code_t err_code;
switch(p_scan_evt->scan_evt_id)
{
case NRF_BLE_SCAN_EVT_WHITELIST_REQUEST:
{
on_whitelist_req();
m_whitelist_disabled = false;
} break;
case NRF_BLE_SCAN_EVT_CONNECTING_ERROR:
{
err_code = p_scan_evt->params.connecting_err.err_code;
APP_ERROR_CHECK(err_code);
} break;
case NRF_BLE_SCAN_EVT_SCAN_TIMEOUT:
{
NRF_LOG_INFO("Scan timed out.");
scan_start();
} break;
case NRF_BLE_SCAN_EVT_FILTER_MATCH:
break;
case NRF_BLE_SCAN_EVT_WHITELIST_ADV_REPORT:
break;
default:
break;
}
}
/**@brief Function for initializing the timer.
*/
static void timer_init(void) {
ret_code_t err_code = app_timer_init();
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, gatt_evt_handler);
APP_ERROR_CHECK(err_code);
err_code = nrf_ble_gatt_att_mtu_periph_set(&m_gatt, NRF_SDH_BLE_GATT_MAX_MTU_SIZE);
APP_ERROR_CHECK(err_code);
err_code = nrf_ble_gatt_data_length_set(&m_gatt, BLE_CONN_HANDLE_INVALID , NRF_SDH_BLE_GAP_DATA_LENGTH);
APP_ERROR_CHECK(err_code);
}
/**@brief Function for initialization scanning and setting filters.
*/
static void scan_init(void) {
ret_code_t err_code;
nrf_ble_scan_init_t init_scan;
memset(&init_scan, 0, sizeof(init_scan));
init_scan.p_scan_param = &m_scan_param;
init_scan.connect_if_match = true;
init_scan.conn_cfg_tag = APP_BLE_CONN_CFG_TAG;
err_code = nrf_ble_scan_init(&m_scan, &init_scan, scan_evt_handler);
APP_ERROR_CHECK(err_code);
ble_uuid_t uuid =
{
.uuid = TARGET_UUID,
.type = BLE_UUID_TYPE_BLE,
};
err_code = nrf_ble_scan_filter_set(&m_scan,
SCAN_UUID_FILTER,
&uuid);
APP_ERROR_CHECK(err_code);
if (strlen(m_target_periph_name) != 0) {
err_code = nrf_ble_scan_filter_set(&m_scan,
SCAN_NAME_FILTER,
m_target_periph_name);
APP_ERROR_CHECK(err_code);
}
if (is_connect_per_addr) {
err_code = nrf_ble_scan_filter_set(&m_scan,
SCAN_ADDR_FILTER,
m_target_periph_addr.addr);
APP_ERROR_CHECK(err_code);
}
err_code = nrf_ble_scan_filters_enable(&m_scan,
NRF_BLE_SCAN_ALL_FILTER,
false);
APP_ERROR_CHECK(err_code);
}
/**@brief Function for handling the idle state (main loop).
*
* @details Handle any pending log operation(s), then sleep until the next event occurs.
*/
static void idle_state_handle(void) {
ret_code_t err_code;
err_code = nrf_ble_lesc_request_handler();
APP_ERROR_CHECK(err_code);
NRF_LOG_FLUSH();
nrf_pwr_mgmt_run();
}
/**@brief Function for starting a scan, or instead trigger it from peer manager (after
* deleting bonds).
*
* @param[in] p_erase_bonds Pointer to a bool to determine if bonds will be deleted before scanning.
*/
void scanning_start(bool *p_erase_bonds) {
// Start scanning for peripherals and initiate connection
// with devices that advertise GATT Service UUID.
if (*p_erase_bonds == true) {
// Scan is started by the PM_EVT_PEERS_DELETE_SUCCEEDED event.
delete_bonds();
} else {
scan_start();
}
}
static void gpio_init(void) {
ret_code_t err_code;
NRF_LOG_INFO("INIT gpio");
nrf_drv_gpiote_out_config_t out_config = GPIOTE_CONFIG_OUT_SIMPLE(false);
err_code = nrf_drv_gpiote_out_init(PIN_OUT, &out_config);
APP_ERROR_CHECK(err_code);
nrf_drv_gpiote_in_event_enable(PIN_IN, true);
}
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);
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);
}
static void on_conn_params_evt(ble_conn_params_evt_t *p_evt) {
uint32_t err_code;
if (p_evt->evt_type == BLE_CONN_PARAMS_EVT_FAILED) {
err_code = sd_ble_gap_disconnect(m_conn_handle, BLE_HCI_CONN_INTERVAL_UNACCEPTABLE);
APP_ERROR_CHECK(err_code);
}
}
static void conn_params_error_handler(uint32_t nrf_error) {
APP_ERROR_HANDLER(nrf_error);
}
static void conn_params_init(void) {
uint32_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 = on_conn_params_evt;
cp_init.error_handler = conn_params_error_handler;
err_code = ble_conn_params_init(&cp_init);
APP_ERROR_CHECK(err_code);
}
void uart_event_handle(app_uart_evt_t *p_event) {
static uint8_t data_array[BLE_NUS_MAX_DATA_LEN];
static uint8_t index = 0;
uint32_t err_code;
switch (p_event->evt_type) {
case APP_UART_DATA_READY:
NRF_LOG_INFO("uart event handle");
UNUSED_VARIABLE(app_uart_get(&data_array[index]));
index++;
if ((data_array[index - 1] == '\n') ||
(data_array[index - 1] == '\r') ||
(index >= m_ble_nus_max_data_len)) {
if (index > 1) {
NRF_LOG_INFO("uart send handle");
NRF_LOG_DEBUG("Ready to send data over BLE NUS");
NRF_LOG_HEXDUMP_DEBUG(data_array, index);
do {
uint16_t length = (uint16_t)index;
err_code = ble_nus_data_send(&m_nus, data_array, &length, m_conn_handle);
NRF_LOG_INFO("%d", err_code);
if ((err_code != NRF_ERROR_INVALID_STATE) &&
(err_code != NRF_ERROR_RESOURCES) &&
(err_code != NRF_ERROR_NOT_FOUND)) {
APP_ERROR_CHECK(err_code);
}
} while (err_code == NRF_ERROR_RESOURCES);
}
index = 0;
}
break;
case APP_UART_COMMUNICATION_ERROR:
APP_ERROR_HANDLER(p_event->data.error_communication);
break;
case APP_UART_FIFO_ERROR:
APP_ERROR_HANDLER(p_event->data.error_code);
break;
default:
break;
}
}
/**@snippet [Handling the data received over UART] */
#define UART_TX_BUF_SIZE 256 /**< UART TX buffer size. */
#define UART_RX_BUF_SIZE 256
/**@brief Function for initializing the UART module.
*/
/**@snippet [UART Initialization] */
static void uart_init(void) {
uint32_t err_code;
app_uart_comm_params_t const comm_params =
{
.rx_pin_no = RX_PIN_NUMBER,
.tx_pin_no = TX_PIN_NUMBER,
.rts_pin_no = RTS_PIN_NUMBER,
.cts_pin_no = CTS_PIN_NUMBER,
.flow_control = APP_UART_FLOW_CONTROL_DISABLED,
.use_parity = false,
#if defined(UART_PRESENT)
.baud_rate = NRF_UART_BAUDRATE_115200
#else
.baud_rate = NRF_UARTE_BAUDRATE_115200
#endif
};
APP_UART_FIFO_INIT(&comm_params,
UART_RX_BUF_SIZE,
UART_TX_BUF_SIZE,
uart_event_handle,
APP_IRQ_PRIORITY_LOWEST,
err_code);
APP_ERROR_CHECK(err_code);
}
static void nrf_qwr_error_handler(uint32_t nrf_error) {
APP_ERROR_HANDLER(nrf_error);
}
static void nus_data_handler(ble_nus_evt_t *p_evt) {
if (p_evt->type == BLE_NUS_EVT_RX_DATA) {
uint32_t err_code;
nrf_delay_ms(10);
NRF_LOG_DEBUG("Received data from BLE NUS. Writing data on UART.");
NRF_LOG_INFO("rom BLE NUS. ");
NRF_LOG_HEXDUMP_DEBUG(p_evt->params.rx_data.p_data, p_evt->params.rx_data.length);
for (uint32_t i = 0; i < p_evt->params.rx_data.length; i++) {
NRF_LOG_INFO("1 ");
do {
err_code = app_uart_put(p_evt->params.rx_data.p_data[i]);
if ((err_code != NRF_SUCCESS) && (err_code != NRF_ERROR_BUSY)) {
NRF_LOG_ERROR("Failed receiving NUS message. Error 0x%x. ", err_code);
APP_ERROR_CHECK(err_code);
}
} while (err_code == NRF_ERROR_BUSY);
}
if (p_evt->params.rx_data.p_data[p_evt->params.rx_data.length - 1] == '\r') {
while (app_uart_put('\n') == NRF_ERROR_BUSY)
;
}
}
}
static void sleep_mode_enter(void) {
uint32_t 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);
}
static void services_init(void) {
uint32_t err_code;
ble_nus_init_t nus_init;
nrf_ble_qwr_init_t qwr_init = {0};
// Initialize Queued Write Module.
qwr_init.error_handler = nrf_qwr_error_handler;
for (uint32_t i = 0; i < NRF_SDH_BLE_TOTAL_LINK_COUNT; i++) {
err_code = nrf_ble_qwr_init(&m_qwr[i], &qwr_init);
APP_ERROR_CHECK(err_code);
}
// Initialize NUS.
memset(&nus_init, 0, sizeof(nus_init));
nus_init.data_handler = nus_data_handler;
err_code = ble_nus_init(&m_nus, &nus_init);
APP_ERROR_CHECK(err_code);
}
static void on_adv_evt(ble_adv_evt_t ble_adv_evt) {
uint32_t err_code;
switch (ble_adv_evt) {
case BLE_ADV_EVT_FAST:
err_code = bsp_indication_set(BSP_INDICATE_ADVERTISING);
APP_ERROR_CHECK(err_code);
break;
case BLE_ADV_EVT_IDLE:
sleep_mode_enter();
break;
default:
break;
}
}
static void advertising_init(void) {
uint32_t err_code;
ble_advertising_init_t init;
memset(&init, 0, sizeof(init));
init.advdata.name_type = BLE_ADVDATA_FULL_NAME;
init.advdata.include_appearance = false;
init.advdata.flags = BLE_GAP_ADV_FLAGS_LE_ONLY_LIMITED_DISC_MODE;
init.srdata.uuids_complete.uuid_cnt = sizeof(m_adv_uuids) / sizeof(m_adv_uuids[0]);
init.srdata.uuids_complete.p_uuids = m_adv_uuids;
init.config.ble_adv_fast_enabled = true;
init.config.ble_adv_fast_interval = APP_ADV_INTERVAL;
init.config.ble_adv_fast_timeout = APP_ADV_DURATION;
init.evt_handler = on_adv_evt;
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);
}
static void advertising_start(void) {
uint32_t err_code = ble_advertising_start(&m_advertising, BLE_ADV_MODE_FAST);
APP_ERROR_CHECK(err_code);
}
int main(void) {
bool erase_bonds;
uint32_t time_ms = 1; //Time(in miliseconds) between consecutive compare events.
uint32_t time_ticks;
uint8_t gyrox=0;
uint8_t gyroy=1;
uint8_t gyroz=2;
uint8_t accelx=3,accely=4,accelz=5;
uint8_t magx=2,magy=2,magz=2;
uint16_t counter=0;
uint8_t lat=6,lon=7,alt=8;
static uint8_t data_array2[150];
uint32_t err_code = NRF_SUCCESS;
uart_init();
log_init();
timer_init();
power_management_init();
buttons_leds_init(&erase_bonds);
ble_stack_init();
gatt_init();
peer_manager_init();
db_discovery_init();
hrs_c_init();
bas_c_init();
scan_init();
gap_params_init();
services_init();
advertising_init();
conn_params_init();
//nrf_drv_timer_config_t timer_cfg = NRF_DRV_TIMER_DEFAULT_CONFIG;
//err_code = nrf_drv_timer_init(&TIMER_LED, &timer_cfg, timer_led_event_handler);
//APP_ERROR_CHECK(err_code);
//time_ticks = nrf_drv_timer_ms_to_ticks(&TIMER_LED, time_ms);
//nrf_drv_timer_extended_compare(&TIMER_LED, NRF_TIMER_CC_CHANNEL0, time_ticks, NRF_TIMER_SHORT_COMPARE0_CLEAR_MASK, true);
//nrf_drv_timer_enable(&TIMER_LED);
//gpio_init();
NRF_LOG_INFO("Heart Rate collector example started.");
// fatfs_example();
int first_row = 1;
if (erase_bonds == true) {
// Scanning and advertising is done upon PM_EVT_PEERS_DELETE_SUCCEEDED event.
delete_bonds();
} else {
adv_scan_start();
}
nrf_delay_ms(10000);
// Enter main loop.
for (;;) {
idle_state_handle();
if(peristat==1)
{
if(counter<5000)
{
if(BLE_GATTS_EVT_SYS_ATTR_MISSING)
{
err_code = sd_ble_gatts_sys_attr_set(m_conn_handle, NULL, 0,0);
APP_ERROR_CHECK(err_code);
}
NRF_LOG_INFO("%d",counter);
sprintf(data_array2,"{\"g_x\":%d,\"g_y\":%d,\"g_z\":%d,\"a_x\":%d,\"a_y\":%d,\"a_z\":%d,\"m_x\":%d,\"m_y\":%d,\"m_z\":%d,\"lat\":%d,\"lon\":%d,\"alt\":%d,\"hb\":%d}",gyrox,gyroy,gyroz,accelx,accely,accelz,magx,magy,magz,lat,lon,alt,heart_rate);
//NRF_LOG_INFO("%d",strlen(data_array2));
NRF_LOG_DEBUG("Ready to send data over BLE NUS");
NRF_LOG_HEXDUMP_DEBUG(data_array2, 0);
do
{
uint16_t length = (uint16_t)150;
err_code = ble_nus_data_send(&m_nus, data_array2, &length, m_conn_handle);
if ((err_code != NRF_ERROR_INVALID_STATE) &&
(err_code != NRF_ERROR_RESOURCES) &&
(err_code != NRF_ERROR_NOT_FOUND))
{
APP_ERROR_CHECK(err_code);
}
} while (err_code == NRF_ERROR_RESOURCES);
gyrox++;
gyroy++;
gyroz++;
accelx++;
accely++;
accelz++;
magx++;
magy++;
magz++;
counter++;
lon++;
lat++;
alt++;
}timer_call=0;
}
}
}
//while(1)
//{
//if(button_pressed)
//{
//if(timer_call==1)
//{
////write code
//ff_result = f_open(&file, FILE_NAME, FA_READ | FA_WRITE | FA_OPEN_APPEND);
//if (ff_result != FR_OK)
//{
// NRF_LOG_INFO("Unable to open or create file: " FILE_NAME ".");
//}
//if(first_row==1)
//{
//ff_result = f_write(&file, init , sizeof(init), (UINT *) &bytes_written);
//if (ff_result != FR_OK)
//{
// NRF_LOG_INFO("read failed\r\n.");
//}
//ff_result = f_write(&file, "\n",1,&bytes_written);
//first_row=0;
//}
// for (int b=1 ;b<=14;b++)
//{
//if(b==13)
//{
//itoa(heart_rate,s_heartrate,10);
//ff_result = f_write(&file, s_heartrate, sizeof(s_heartrate), (UINT *) &bytes_written);
//}
//else
//{
//ff_result = f_write(&file, data, sizeof(data), (UINT *) &bytes_written);
//if (ff_result != FR_OK)
//{
// NRF_LOG_INFO("Write failed\r\n.");
//}
//else
//{
// // NRF_LOG_INFO("%d bytes written.", bytes_written);
//}
//}
//ff_result = f_write(&file, ",",1,&bytes_written);
//}
//ff_result = f_write(&file, "\n",1,&bytes_written);
//timer_call=0;
//(void) f_close(&file);
////nrf_delay_ms(100);
//}
// //idle_state_handle();
// //bsp_board_led_invert(3);v
//}
//}// if(button_pressed)
// uint32_t time_ms = 100; //Time(in miliseconds) between consecutive compare events.
//uint32_t time_ticks ;
// uint32_t err_code = NRF_SUCCESS;
//bsp_board_init(BSP_INIT_LEDS);
// uint32_t time_ms2 ;
// nrf_drv_timer_config_t timer_cfg = NRF_DRV_TIMER_DEFAULT_CONFIG;
// NRF_LOG_INFO("FATFS example started.");
// fatfs_example();
// err_code = nrf_drv_timer_init(&TIMER_LED, &timer_cfg, timer_led_event_handler);
// APP_ERROR_CHECK(err_code);
This is my code right now i have achieved 35KBps but i want to achieve 100kBps plus . Right now i am using galaxy s8 . Please have a look and get me out of this as i am stuck here for a while .
So here is situation when i try to connect through nrf toolbox and want to see data on logs some of notification missed but when i use nrf connect and nrf toolbox on same time , Whole data received . When i disconnect all and connect with nrf connect it gives good data rate but not whole data just starting data
