How to delete all pairs in connection

RE: How to delete all pairs in connection

inghowe83 — Mon, 11 Feb 2019 01:04:31 GMT

Thanks. What should I do next, I kinda out of idea about this. As the whole driver code is like a black box to me.

Here is the debug crush disassembly.

--- app_button.c -- 152 ------------------------------------
VERIFY_SUCCESS(err_code);
}
// Save configuration.
mp_buttons = p_buttons;
    4B1A        ldr r3, =0x20005E38 <mp_buttons>
    601E        str r6, [r3]
--- app_button.c -- 157 ------------------------------------
m_button_count = button_count;
    4B1A        ldr r3, =0x20005DFC <m_button_count>
    701D        strb r5, [r3]
--- app_button.c -- 158 ------------------------------------
m_detection_delay = detection_delay;
    4B1A        ldr r3, =0x20005E00 <m_detection_delay>
    601C        str r4, [r3]
--- app_button.c -- 159 ------------------------------------
m_pin_state = 0;
    2200        movs r2, #0
    2300        movs r3, #0
    4919        ldr r1, =0x20005E28 <m_pin_state>
    E9C12300    strd r2, r3, [r1, #0]
--- app_button.c -- 161 ------------------------------------
m_pin_transition = 0;
    4918        ldr r1, =0x20005E30 <m_pin_transition>
    E9C12300    strd r2, r3, [r1, #0]
--- app_button.c -- 162 ------------------------------------
while (button_count--)
    1E6C        subs r4, r5, #1
    B2E4        uxtb r4, r4
    B1D5        cbz r5, 0x0002749E
--- app_button.c -- 164 ------------------------------------
{
app_button_cfg_t const * p_btn = &p_buttons[button_count];
    EB0603C4    add.w r3, r6, r4, lsl #3
--- app_button.c -- 166 ------------------------------------
#if defined(BUTTON_HIGH_ACCURACY_ENABLED) && (BUTTON_HIGH_ACCURACY_ENABLED == 1)
nrf_drv_gpiote_in_config_t config = GPIOTE_CONFIG_IN_SENSE_TOGGLE(p_btn->hi_accuracy);
#else
nrf_drv_gpiote_in_config_t config = GPIOTE_CONFIG_IN_SENSE_TOGGLE(false);
    2200        movs r2, #0
    F88D2006    strb.w r2, [sp, #6]
    2203        movs r2, #3
    F88D2004    strb.w r2, [sp, #4]
--- app_button.c -- 171 ------------------------------------
#endif
config.pull = p_btn->pull_cfg;
    789B        ldrb r3, [r3, #2]
    F88D3005    strb.w r3, [sp, #5]
--- app_button.c -- 173 ------------------------------------
err_code = nrf_drv_gpiote_in_init(p_btn->pin_no, &config, gpiote_event_handler);
    4A11        ldr r2, =0x00027391
    A901        add r1, sp, #4
    F8160034    ldrb.w r0, [r6, r4, lsl #3]
    F004FC45    bl 0x0002BD14 <nrfx_gpiote_in_init>
--- app_button.c -- 175 ------------------------------------
VERIFY_SUCCESS(err_code);
    4603        mov r3, r0
    B968        cbnz r0, 0x000274AA
--- app_button.c -- 163 ------------------------------------
while (button_count--)
    4625        mov r5, r4
    E7E7        b 0x00027462
--- app_button.c -- 151 ------------------------------------
err_code = nrf_drv_gpiote_init();
    F004FBF3    bl 0x0002BC7C <nrfx_gpiote_init>
--- app_button.c -- 152 ------------------------------------
VERIFY_SUCCESS(err_code);
    4603        mov r3, r0
    2800        cmp r0, #0
    D0D4        beq 0x00027446
    E005        b 0x000274AA
--- app_button.c -- 175 ------------------------------------
VERIFY_SUCCESS(err_code);
}
// Create polling timer.
return app_timer_create(&m_detection_delay_timer_id,
    4A0A        ldr r2, =0x0002729D
    2100        movs r1, #0
    480A        ldr r0, =0x0003409C <m_detection_delay_timer_id>
    F000F87C    bl 0x000275A0 <app_timer_create>
    4603        mov r3, r0
--- app_button.c -- 180 ------------------------------------
APP_TIMER_MODE_SINGLE_SHOT,
detection_delay_timeout_handler);
}
    4618        mov r0, r3
    B002        add sp, sp, #8
    BD70        pop {r4-r6, pc}
    20005E38    .word 0x20005E38
    20005DFC    .word 0x20005DFC
    20005E00    .word 0x20005E00
    20005E28    .word 0x20005E28
    20005E30    .word 0x20005E30
    00027391    .word 0x00027391
    0002729D    .word 0x0002729D
    0003409C    .word 0x0003409C
--- app_button.c -- 183 ------------------------------------
uint32_t app_button_enable(void)
{
    B510        push {r4, lr}
--- app_button.c -- 186 ------------------------------------
ASSERT(mp_buttons);
uint32_t i;
for (i = 0; i < m_button_count; i++)
    2400        movs r4, #0
    E007        b 0x000274E6
--- app_button.c -- 190 ------------------------------------
{
nrf_drv_gpiote_in_event_enable(mp_buttons[i].pin_no, true);
    4B07        ldr r3, =0x20005E38 <mp_buttons>
    681B        ldr r3, [r3]
    2101        movs r1, #1
    F8130034    ldrb.w r0, [r3, r4, lsl #3]
    F004FC94    bl 0x0002BE0C <nrfx_gpiote_in_event_enable>
--- app_button.c -- 189 ------------------------------------
for (i = 0; i < m_button_count; i++)
    3401        adds r4, #1
--- app_button.c -- 189 ------------------------------------
for (i = 0; i < m_button_count; i++)
    4B04        ldr r3, =0x20005DFC <m_button_count>
    781B        ldrb r3, [r3]
    429C        cmp r4, r3
    D3F3        bcc 0x000274D6
--- app_button.c -- 191 ------------------------------------
nrf_drv_gpiote_in_event_enable(mp_buttons[i].pin_no, true);
}
return NRF_SUCCESS;
}
    2000        movs r0, #0
    BD10        pop {r4, pc}
    BF00        nop
    20005E38    .word 0x20005E38
    20005DFC    .word 0x20005DFC
--- app_error.c -- 61 --------------------------------------
* @param[in] line_num Line number where the handler is called.
* @param[in] p_file_name Pointer to the file name.
*/
void app_error_handler_bare(ret_code_t error_code)
{
    B500        push {lr}
    B085        sub sp, sp, #20
--- app_error.c -- 66 --------------------------------------
error_info_t error_info =
    2100        movs r1, #0
    9101        str r1, [sp, #4]
    9102        str r1, [sp, #8]
    9003        str r0, [sp, #12]
--- app_error.c -- 69 --------------------------------------
.p_file_name = NULL,
.err_code = error_code,
};
app_error_fault_handler(NRF_FAULT_ID_SDK_ERROR, 0, (uint32_t)(&error_info));
    AA01        add r2, sp, #4
    F2440001    movw r0, #0x4001
    F000F803    bl 0x00027518 <app_error_fault_handler>
--- app_error.c -- 74 --------------------------------------
UNUSED_VARIABLE(error_info);
}
    B005        add sp, sp, #20
    F85DFB04    pop.w {pc}
--- app_error_weak.c -- 53 ---------------------------------
* Function is implemented as weak so that it can be overwritten by custom application error handler
* when needed.
*/
__WEAK void app_error_fault_handler(uint32_t id, uint32_t pc, uint32_t info)
{
    B510        push {r4, lr}
--- cmsis_gcc.h -- 67 --------------------------------------
Can only be executed in Privileged modes.
*/
__attribute__( ( always_inline ) ) __STATIC_INLINE void __disable_irq(void)
{
__ASM volatile ("cpsid i" : : : "memory");
    B672        cpsid i
--- app_error_weak.c -- 55 ---------------------------------
*/
__WEAK void app_error_fault_handler(uint32_t id, uint32_t pc, uint32_t info)
{
__disable_irq();
NRF_LOG_FINAL_FLUSH();
    F7FFFD92    bl 0x00027044 <nrf_log_panic>
--- app_error_weak.c -- 59 ---------------------------------
NRF_LOG_FINAL_FLUSH();
    F7FFF96E    bl 0x00026800 <nrf_log_frontend_dequeue>
    2800        cmp r0, #0
    D1FB        bne 0x00027520
--- app_error_weak.c -- 60 ---------------------------------
#ifndef DEBUG
NRF_LOG_ERROR("Fatal error");
    4B10        ldr r3, =0x00033E80 <__cli_command_end__>
    4C11        ldr r4, =0x00033EA8 <m_nrf_log_app_logs_data_const>
    1AE4        subs r4, r4, r3
    08E4        lsrs r4, r4, #3
    0424        lsls r4, r4, #16
    4910        ldr r1, =0x000340A0
    F0440001    orr r0, r4, #1
    F7FFFAA4    bl 0x00026A84 <nrf_log_frontend_std_0>
--- app_error_weak.c -- 96 ---------------------------------
break;
}
#endif
NRF_BREAKPOINT_COND;
    4B0E        ldr r3, =0xE000EDF0
    681B        ldr r3, [r3]
    F0130F01    tst r3, #1
    D000        beq 0x00027548
--- app_error_weak.c -- 100 --------------------------------
NRF_BREAKPOINT_COND;
    BE00        bkpt #0
--- app_error_weak.c -- 101 --------------------------------
// On assert, the system can only recover with a reset.
#ifndef DEBUG
NRF_LOG_WARNING("System reset");
    490C        ldr r1, =0x000340AC
    F0440002    orr r0, r4, #2
    F7FFFA99    bl 0x00026A84 <nrf_log_frontend_std_0>
--- cmsis_gcc.h -- 425 -------------------------------------
It completes when all explicit memory accesses before this instruction complete.
*/
__attribute__((always_inline)) __STATIC_INLINE void __DSB(void)
{
__ASM volatile ("dsb 0xF":::"memory");
    F3BF8F4F    dsb sy
--- core_cm4.h -- 1791 -------------------------------------
{
__DSB(); /* Ensure all outstanding memory accesses included
buffered write are completed before reset */
SCB->AIRCR = (uint32_t)((0x5FAUL << SCB_AIRCR_VECTKEY_Pos) |
(SCB->AIRCR & SCB_AIRCR_PRIGROUP_Msk) |
    490A        ldr r1, =0xE000ED00
    68CA        ldr r2, [r1, #12]
    F40262E0    and r2, r2, #0x700
    4B09        ldr r3, =0x05FA0004
    4313        orrs r3, r2
--- core_cm4.h -- 1794 -------------------------------------
SCB->AIRCR = (uint32_t)((0x5FAUL << SCB_AIRCR_VECTKEY_Pos) |
    60CB        str r3, [r1, #12]
--- cmsis_gcc.h -- 425 -------------------------------------
It completes when all explicit memory accesses before this instruction complete.
*/
__attribute__((always_inline)) __STATIC_INLINE void __DSB(void)
{
__ASM volatile ("dsb 0xF":::"memory");
    F3BF8F4F    dsb sy
--- cmsis_gcc.h -- 375 -------------------------------------
__ASM volatile ("nop");
    BF00        nop
    E7FD        b 0x00027568
    00033E80    .word 0x00033E80
    00033EA8    .word 0x00033EA8
    000340A0    .word 0x000340A0
    E000EDF0    .word 0xE000EDF0
    000340AC    .word 0x000340AC
    E000ED00    .word 0xE000ED00
    05FA0004    .word 0x05FA0004
--- app_timer_freertos.c -- 99 -----------------------------
* It gets our parameter from timer data and sends it to user function.
* @param[in] xTimer Timer handler
*/
static void app_timer_callback(TimerHandle_t xTimer)
{
    B508        push {r3, lr}
--- app_timer_freertos.c -- 104 ----------------------------
app_timer_info_t * pinfo = (app_timer_info_t*)(pvTimerGetTimerID(xTimer));
    F004F868    bl 0x0002B65E <pvTimerGetTimerID>
--- app_timer_freertos.c -- 105 ----------------------------
ASSERT(pinfo->osHandle == xTimer);
ASSERT(pinfo->func != NULL);
if (pinfo->active)
    7B03        ldrb r3, [r0, #12]
    B903        cbnz r3, 0x00027594
    BD08        pop {r3, pc}
--- app_timer_freertos.c -- 109 ----------------------------
pinfo->func(pinfo->argument);
    6883        ldr r3, [r0, #8]
    6800        ldr r0, [r0]
    4798        blx r3
--- app_timer_freertos.c -- 110 ----------------------------
}
    E7FA        b 0x00027592
--- app_timer_freertos.c -- 112 ----------------------------
uint32_t app_timer_init(void)
{
return NRF_SUCCESS;
}
    2000        movs r0, #0
    4770        bx lr
--- app_timer_freertos.c -- 118 ----------------------------
uint32_t app_timer_create(app_timer_id_t const * p_timer_id,
app_timer_mode_t mode,
app_timer_timeout_handler_t timeout_handler)
{
    B570        push {r4-r6, lr}
    B082        sub sp, sp, #8
--- app_timer_freertos.c -- 123 ----------------------------
app_timer_info_t * pinfo = (app_timer_info_t*)(*p_timer_id);
    6804        ldr r4, [r0]
--- app_timer_freertos.c -- 124 ----------------------------
uint32_t err_code = NRF_SUCCESS;
unsigned long timer_mode;
if ((timeout_handler == NULL) || (p_timer_id == NULL))
    B30A        cbz r2, 0x000275EC
    4615        mov r5, r2
--- app_timer_freertos.c -- 127 ----------------------------
if ((timeout_handler == NULL) || (p_timer_id == NULL))
    B308        cbz r0, 0x000275F0
--- app_timer_freertos.c -- 128 ----------------------------
{
return NRF_ERROR_INVALID_PARAM;
}
if (pinfo->active)
    7B23        ldrb r3, [r4, #12]
    B113        cbz r3, 0x000275B6
--- app_timer_freertos.c -- 132 ----------------------------
{
return NRF_ERROR_INVALID_STATE;
    2008        movs r0, #8
--- app_timer_freertos.c -- 155 ----------------------------
return NRF_ERROR_INVALID_STATE;
}
return err_code;
}
    B002        add sp, sp, #8
    BD70        pop {r4-r6, pc}
--- app_timer_freertos.c -- 136 ----------------------------
if (pinfo->osHandle == NULL)
    6863        ldr r3, [r4, #4]
    B10B        cbz r3, 0x000275BE
--- app_timer_freertos.c -- 151 ----------------------------
}
else
{
/* Timer cannot be reinitialized using FreeRTOS API */
return NRF_ERROR_INVALID_STATE;
    2008        movs r0, #8
    E7F9        b 0x000275B2
    460E        mov r6, r1
--- app_timer_freertos.c -- 139 ----------------------------
memset(pinfo, 0, sizeof(app_timer_info_t));
    2210        movs r2, #16
    2100        movs r1, #0
    4620        mov r0, r4
    F00CFBA5    bl 0x00033D14 <memset>
--- app_timer_freertos.c -- 140 ----------------------------
if (mode == APP_TIMER_MODE_SINGLE_SHOT)
    B96E        cbnz r6, 0x000275E8
--- app_timer_freertos.c -- 142 ----------------------------
timer_mode = pdFALSE;
    2200        movs r2, #0
--- app_timer_freertos.c -- 143 ----------------------------
else
timer_mode = pdTRUE;
pinfo->func = timeout_handler;
    60A5        str r5, [r4, #8]
--- app_timer_freertos.c -- 147 ----------------------------
pinfo->osHandle = xTimerCreate(" ", 1000, timer_mode, pinfo, app_timer_callback);
    4B09        ldr r3, =0x00027589
    9300        str r3, [sp]
    4623        mov r3, r4
    F44F717A    mov.w r1, #0x3E8
    4808        ldr r0, =0x00034034
    F003FED4    bl 0x0002B388 <xTimerCreate>
    6060        str r0, [r4, #4]
--- app_timer_freertos.c -- 148 ----------------------------
if (pinfo->osHandle == NULL)
    B138        cbz r0, 0x000275F4
--- app_timer_freertos.c -- 124 ----------------------------
uint32_t err_code = NRF_SUCCESS;
    2000        movs r0, #0
    E7E4        b 0x000275B2
--- app_timer_freertos.c -- 140 ----------------------------
if (mode == APP_TIMER_MODE_SINGLE_SHOT)
timer_mode = pdFALSE;
else
timer_mode = pdTRUE;
    2201        movs r2, #1
    E7F0        b 0x000275CE
--- app_timer_freertos.c -- 129 ----------------------------
return NRF_ERROR_INVALID_PARAM;
    2007        movs r0, #7
    E7E0        b 0x000275B2
    2007        movs r0, #7
    E7DE        b 0x000275B2
--- app_timer_freertos.c -- 146 ----------------------------
pinfo->func = timeout_handler;
pinfo->osHandle = xTimerCreate(" ", 1000, timer_mode, pinfo, app_timer_callback);
if (pinfo->osHandle == NULL)
err_code = NRF_ERROR_NULL;
    200E        movs r0, #14
    E7DC        b 0x000275B2
    00027589    .word 0x00027589
    00034034    .word 0x00034034
--- app_timer_freertos.c -- 159 ----------------------------
}
uint32_t app_timer_start(app_timer_id_t timer_id, uint32_t timeout_ticks, void * p_context)
{
    B5F0        push {r4-r7, lr}
    B085        sub sp, sp, #20
--- app_timer_freertos.c -- 164 ----------------------------
app_timer_info_t * pinfo = (app_timer_info_t*)(timer_id);
TimerHandle_t hTimer = pinfo->osHandle;
    6847        ldr r7, [r0, #4]
--- app_timer_freertos.c -- 166 ----------------------------
if (hTimer == NULL)
    2F00        cmp r7, #0
    D053        beq 0x000276B2
    4614        mov r4, r2
    460E        mov r6, r1
    4605        mov r5, r0
--- app_timer_freertos.c -- 168 ----------------------------
{
return NRF_ERROR_INVALID_STATE;
}
if (pinfo->active && (xTimerIsTimerActive(hTimer) != pdFALSE))
    7B03        ldrb r3, [r0, #12]
    B993        cbnz r3, 0x0002763A
--- app_timer_freertos.c -- 173 ----------------------------
// Timer already running - exit silently
return NRF_SUCCESS;
}
pinfo->argument = p_context;
    602C        str r4, [r5]
--- cmsis_gcc.h -- 105 -------------------------------------
__attribute__( ( always_inline ) ) __STATIC_INLINE uint32_t __get_IPSR(void)
{
uint32_t result;
__ASM volatile ("MRS %0, ipsr" : "=r" (result) );
    F3EF8305    mrs r3, ipsr
--- app_timer_freertos.c -- 175 ----------------------------
}
pinfo->argument = p_context;
if (__get_IPSR() != 0)
    B383        cbz r3, 0x0002767E
--- app_timer_freertos.c -- 180 ----------------------------
{
BaseType_t yieldReq = pdFALSE;
    2200        movs r2, #0
    AB04        add r3, sp, #16
    F8432D04    str r2, [r3, #-4]!
--- app_timer_freertos.c -- 182 ----------------------------
if (xTimerChangePeriodFromISR(hTimer, timeout_ticks, &yieldReq) != pdPASS)
    9200        str r2, [sp]
    4632        mov r2, r6
    2109        movs r1, #9
    4638        mov r0, r7
    F003FEC6    bl 0x0002B3BC <xTimerGenericCommand>
    2801        cmp r0, #1
    D009        beq 0x00027648
--- app_timer_freertos.c -- 183 ----------------------------
{
return NRF_ERROR_NO_MEM;
    2004        movs r0, #4
--- app_timer_freertos.c -- 205 ----------------------------
}
pinfo->active = true;
return NRF_SUCCESS;
}
    B005        add sp, sp, #20
    BDF0        pop {r4-r7, pc}
--- app_timer_freertos.c -- 171 ----------------------------
if (pinfo->active && (xTimerIsTimerActive(hTimer) != pdFALSE))
    4638        mov r0, r7
    F004F803    bl 0x0002B646 <xTimerIsTimerActive>
    2800        cmp r0, #0
    D0E7        beq 0x00027614
--- app_timer_freertos.c -- 172 ----------------------------
{
// Timer already running - exit silently
return NRF_SUCCESS;
    2000        movs r0, #0

RE: How to delete all pairs in connection

haakonsh — Tue, 05 Feb 2019 13:02:34 GMT

evt_send calls the event handler of the first event handler registered through pm_register (first loop), this might be the function pointer in m_evt_handlers[0].

That event handler is the next clue of our mystery. I'm guessing that it contains the APP_ERROR_CHECK that processed a non-NRF_SUCCSESS return code, thereby calling the error handler.

RE: How to delete all pairs in connection

inghowe83 — Wed, 30 Jan 2019 00:57:00 GMT

Hi,

I checked, it didn't even completed progress through the whole pm_peers_delete function. The NRF_BREAKPOINT_COND happens when evt_send(&pm_delete_all_evt) is called.

My device already pair with the phone via nrf connect mobile app. Not sure why it shown no peer id

RE: How to delete all pairs in connection

haakonsh — Tue, 29 Jan 2019 12:17:23 GMT

What's the return code from pm_peers_delete?

RE: How to delete all pairs in connection

inghowe83 — Tue, 29 Jan 2019 03:15:03 GMT

Hi,

My ble_app_hrs_freertos also encounter NRF_BREAKPOINT_COND in debug after run pm_peers_delete. Please advice.

HW: PCA10056

SW:nRF5_SDK_15.2.0_9412b96

example: ble_app_hrs_freertos

/**
 * Copyright (c) 2014 - 2018, Nordic Semiconductor ASA
 *
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without modification,
 * are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice, this
 *    list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form, except as embedded into a Nordic
 *    Semiconductor ASA integrated circuit in a product or a software update for
 *    such product, must reproduce the above copyright notice, this list of
 *    conditions and the following disclaimer in the documentation and/or other
 *    materials provided with the distribution.
 *
 * 3. Neither the name of Nordic Semiconductor ASA nor the names of its
 *    contributors may be used to endorse or promote products derived from this
 *    software without specific prior written permission.
 *
 * 4. This software, with or without modification, must only be used with a
 *    Nordic Semiconductor ASA integrated circuit.
 *
 * 5. Any software provided in binary form under this license must not be reverse
 *    engineered, decompiled, modified and/or disassembled.
 *
 * THIS SOFTWARE IS PROVIDED BY NORDIC SEMICONDUCTOR ASA "AS IS" AND ANY EXPRESS
 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY, NONINFRINGEMENT, AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL NORDIC SEMICONDUCTOR ASA OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
 * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 */
// Board/nrf6310/ble/ble_app_hrs_rtx/main.c
/**
 *
 * @brief Heart Rate Service Sample Application with RTX main file.
 *
 * This file contains the source code for a sample application using RTX and the
 * Heart Rate service (and also Battery and Device Information services).
 * This application uses the @ref srvlib_conn_params module.
 */

#include <stdint.h>
#include <string.h>
#include "nordic_common.h"
#include "nrf.h"
#include "app_error.h"
#include "ble.h"
#include "ble_hci.h"
#include "ble_srv_common.h"
#include "ble_advdata.h"
#include "ble_advertising.h"
#include "ble_bas.h"
#include "ble_hrs.h"
#include "ble_dis.h"
#include "ble_conn_params.h"
#include "sensorsim.h"
#include "nrf_sdh.h"
#include "nrf_sdh_soc.h"
#include "nrf_sdh_ble.h"
#include "nrf_sdh_freertos.h"
#include "app_timer.h"
#include "peer_manager.h"
#include "peer_manager_handler.h"
#include "bsp_btn_ble.h"
#include "FreeRTOS.h"
#include "task.h"
#include "timers.h"
#include "semphr.h"
#include "fds.h"
#include "ble_conn_state.h"
#include "nrf_drv_clock.h"
#include "nrf_ble_gatt.h"
#include "nrf_ble_qwr.h"

#include "nrf_log.h"
#include "nrf_log_ctrl.h"
#include "nrf_log_default_backends.h"


#define DEVICE_NAME                         "Nordic_HRM"                            /**< 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 APP_ADV_INTERVAL                    300                                     /**< The advertising interval (in units of 0.625 ms. This value corresponds to 187.5 ms). */
#define APP_ADV_DURATION                    18000                                       /**< The advertising duration (180 seconds) in units of 10 milliseconds. */

#define BATTERY_LEVEL_MEAS_INTERVAL         2000                                    /**< Battery level measurement interval (ms). */
#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 HEART_RATE_MEAS_INTERVAL            1000                                    /**< Heart rate measurement interval (ms). */
#define MIN_HEART_RATE                      140                                     /**< Minimum heart rate as returned by the simulated measurement function. */
#define MAX_HEART_RATE                      300                                     /**< Maximum heart rate as returned by the simulated measurement function. */
#define HEART_RATE_INCREMENT                10                                      /**< Value by which the heart rate is incremented/decremented for each call to the simulated measurement function. */

#define RR_INTERVAL_INTERVAL                300                                     /**< RR interval interval (ms). */
#define MIN_RR_INTERVAL                     100                                     /**< Minimum RR interval as returned by the simulated measurement function. */
#define MAX_RR_INTERVAL                     500                                     /**< Maximum RR interval as returned by the simulated measurement function. */
#define RR_INTERVAL_INCREMENT               1                                       /**< Value by which the RR interval is incremented/decremented for each call to the simulated measurement function. */

#define SENSOR_CONTACT_DETECTED_INTERVAL    5000                                    /**< Sensor Contact Detected toggle interval (ms). */

#define MIN_CONN_INTERVAL                   MSEC_TO_UNITS(400, UNIT_1_25_MS)        /**< Minimum acceptable connection interval (0.4 seconds). */
#define MAX_CONN_INTERVAL                   MSEC_TO_UNITS(650, UNIT_1_25_MS)        /**< Maximum acceptable connection interval (0.65 second). */
#define SLAVE_LATENCY                       0                                       /**< Slave latency. */
#define CONN_SUP_TIMEOUT                    MSEC_TO_UNITS(4000, UNIT_10_MS)         /**< Connection supervisory time-out (4 seconds). */

#define FIRST_CONN_PARAMS_UPDATE_DELAY      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       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 DEAD_BEEF                           0xDEADBEEF                              /**< Value used as error code on stack dump, can be used to identify stack location on stack unwind. */

#define OSTIMER_WAIT_FOR_QUEUE              2                                       /**< Number of ticks to wait for the timer queue to be ready */


BLE_BAS_DEF(m_bas);                                                 /**< Battery service instance. */
BLE_HRS_DEF(m_hrs);                                                 /**< Heart rate service instance. */
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 uint16_t m_conn_handle         = BLE_CONN_HANDLE_INVALID;    /**< Handle of the current connection. */
static bool     m_rr_interval_enabled = true;                       /**< Flag for enabling and disabling the registration of new RR interval measurements (the purpose of disabling this is just to test sending HRM without RR interval data. */

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 sensorsim_cfg_t   m_heart_rate_sim_cfg;                      /**< Heart Rate sensor simulator configuration. */
static sensorsim_state_t m_heart_rate_sim_state;                    /**< Heart Rate sensor simulator state. */
static sensorsim_cfg_t   m_rr_interval_sim_cfg;                     /**< RR Interval sensor simulator configuration. */
static sensorsim_state_t m_rr_interval_sim_state;                   /**< RR Interval sensor simulator state. */

static ble_uuid_t m_adv_uuids[] =                                   /**< Universally unique service identifiers. */
{
    {BLE_UUID_HEART_RATE_SERVICE, BLE_UUID_TYPE_BLE},
    {BLE_UUID_BATTERY_SERVICE, BLE_UUID_TYPE_BLE},
    {BLE_UUID_DEVICE_INFORMATION_SERVICE, BLE_UUID_TYPE_BLE}
};

static TimerHandle_t m_battery_timer;                               /**< Definition of battery timer. */
static TimerHandle_t m_heart_rate_timer;                            /**< Definition of heart rate timer. */
static TimerHandle_t m_rr_interval_timer;                           /**< Definition of RR interval timer. */
static TimerHandle_t m_sensor_contact_timer;                        /**< Definition of sensor contact detected timer. */

#if NRF_LOG_ENABLED
static TaskHandle_t m_logger_thread;                                /**< Definition of Logger thread. */
#endif

static void advertising_start(void * p_erase_bonds);


/**@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 Function for handling Peer Manager events.
 *
 * @param[in] p_evt  Peer Manager event.
 */
static void pm_evt_handler(pm_evt_t const * p_evt)
{
    bool delete_bonds = false;

    pm_handler_on_pm_evt(p_evt);
    pm_handler_flash_clean(p_evt);

    switch (p_evt->evt_id)
    {
        case PM_EVT_PEERS_DELETE_SUCCEEDED:
            advertising_start(&delete_bonds);
            break;
        case PM_EVT_BONDED_PEER_CONNECTED:  
            NRF_LOG_INFO("PM_EVT_BONDED_PEER_CONNECTED");
            break;
        default:
            break;
    }
}


/**@brief Function for performing battery measurement and updating the Battery Level characteristic
 *        in 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);
    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 Battery measurement timer time-out.
 *
 * @details This function will be called each time the battery level measurement timer expires.
 *
 * @param[in] xTimer Handler to the timer that called this function.
 *                   You may get identifier given to the function xTimerCreate using pvTimerGetTimerID.
 */
static void battery_level_meas_timeout_handler(TimerHandle_t xTimer)
{
    UNUSED_PARAMETER(xTimer);
    battery_level_update();
}


/**@brief Function for handling the Heart rate measurement timer time-out.
 *
 * @details This function will be called each time the heart rate measurement timer expires.
 *          It will exclude RR Interval data from every third measurement.
 *
 * @param[in] xTimer Handler to the timer that called this function.
 *                   You may get identifier given to the function xTimerCreate using pvTimerGetTimerID.
 */
static void heart_rate_meas_timeout_handler(TimerHandle_t xTimer)
{
    static uint32_t cnt = 0;
    ret_code_t      err_code;
    uint16_t        heart_rate;

    UNUSED_PARAMETER(xTimer);

    heart_rate = (uint16_t)sensorsim_measure(&m_heart_rate_sim_state, &m_heart_rate_sim_cfg);

    cnt++;
    err_code = ble_hrs_heart_rate_measurement_send(&m_hrs, heart_rate);
    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);
    }

    // Disable RR Interval recording every third heart rate measurement.
    // NOTE: An application will normally not do this. It is done here just for testing generation
    // of messages without RR Interval measurements.
    m_rr_interval_enabled = ((cnt % 3) != 0);
}


/**@brief Function for handling the RR interval timer time-out.
 *
 * @details This function will be called each time the RR interval timer expires.
 *
 * @param[in] xTimer Handler to the timer that called this function.
 *                   You may get identifier given to the function xTimerCreate using pvTimerGetTimerID.
 */
static void rr_interval_timeout_handler(TimerHandle_t xTimer)
{
    UNUSED_PARAMETER(xTimer);

    if (m_rr_interval_enabled)
    {
        uint16_t rr_interval;

        rr_interval = (uint16_t)sensorsim_measure(&m_rr_interval_sim_state,
                                                  &m_rr_interval_sim_cfg);
        ble_hrs_rr_interval_add(&m_hrs, rr_interval);
    }
}


/**@brief Function for handling the Sensor Contact Detected timer time-out.
 *
 * @details This function will be called each time the Sensor Contact Detected timer expires.
 *
 * @param[in] xTimer Handler to the timer that called this function.
 *                   You may get identifier given to the function xTimerCreate using pvTimerGetTimerID.
 */
static void sensor_contact_detected_timeout_handler(TimerHandle_t xTimer)
{
    static bool sensor_contact_detected = false;

    UNUSED_PARAMETER(xTimer);

    sensor_contact_detected = !sensor_contact_detected;
    ble_hrs_sensor_contact_detected_update(&m_hrs, sensor_contact_detected);
}


/**@brief Function for the Timer initialization.
 *
 * @details Initializes the timer module. This creates and starts application timers.
 */
static void timers_init(void)
{
    // Initialize timer module.
    ret_code_t err_code = app_timer_init();
    APP_ERROR_CHECK(err_code);

    // Create timers.
    m_battery_timer = xTimerCreate("BATT",
                                   BATTERY_LEVEL_MEAS_INTERVAL,
                                   pdTRUE,
                                   NULL,
                                   battery_level_meas_timeout_handler);
    m_heart_rate_timer = xTimerCreate("HRT",
                                      HEART_RATE_MEAS_INTERVAL,
                                      pdTRUE,
                                      NULL,
                                      heart_rate_meas_timeout_handler);
    m_rr_interval_timer = xTimerCreate("RRT",
                                       RR_INTERVAL_INTERVAL,
                                       pdTRUE,
                                       NULL,
                                       rr_interval_timeout_handler);
    m_sensor_contact_timer = xTimerCreate("SCT",
                                          SENSOR_CONTACT_DETECTED_INTERVAL,
                                          pdTRUE,
                                          NULL,
                                          sensor_contact_detected_timeout_handler);

    /* Error checking */
    if ( (NULL == m_battery_timer)
         || (NULL == m_heart_rate_timer)
         || (NULL == m_rr_interval_timer)
         || (NULL == m_sensor_contact_timer) )
    {
        APP_ERROR_HANDLER(NRF_ERROR_NO_MEM);
    }
}


/**@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_HEART_RATE_SENSOR_HEART_RATE_BELT);
    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 services that will be used by the application.
 *
 * @details Initialize the Heart Rate, Battery and Device Information services.
 */
static void services_init(void)
{
    ret_code_t         err_code;
    ble_hrs_init_t     hrs_init;
    ble_bas_init_t     bas_init;
    ble_dis_init_t     dis_init;
    nrf_ble_qwr_init_t qwr_init = {0};
    uint8_t            body_sensor_location;

    // Initialize Queued Write Module.
    qwr_init.error_handler = nrf_qwr_error_handler;

    err_code = nrf_ble_qwr_init(&m_qwr, &qwr_init);
    APP_ERROR_CHECK(err_code);

    // Initialize Heart Rate Service.
    body_sensor_location = BLE_HRS_BODY_SENSOR_LOCATION_FINGER;

    memset(&hrs_init, 0, sizeof(hrs_init));

    hrs_init.evt_handler                 = NULL;
    hrs_init.is_sensor_contact_supported = true;
    hrs_init.p_body_sensor_location      = &body_sensor_location;

    // Here the sec level for the Heart Rate Service can be changed/increased.
    hrs_init.hrm_cccd_wr_sec = SEC_OPEN;
    hrs_init.bsl_rd_sec      = SEC_OPEN;

    err_code = ble_hrs_init(&m_hrs, &hrs_init);
    APP_ERROR_CHECK(err_code);

    // Initialize Battery Service.
    memset(&bas_init, 0, sizeof(bas_init));

    // Here the sec level for the Battery Service can be changed/increased.
    bas_init.bl_rd_sec        = SEC_OPEN;
    bas_init.bl_cccd_wr_sec   = SEC_OPEN;
    bas_init.bl_report_rd_sec = SEC_OPEN;

    bas_init.evt_handler          = NULL;
    bas_init.support_notification = true;
    bas_init.p_report_ref         = NULL;
    bas_init.initial_batt_level   = 100;

    err_code = ble_bas_init(&m_bas, &bas_init);
    APP_ERROR_CHECK(err_code);

    // Initialize Device Information Service.
    memset(&dis_init, 0, sizeof(dis_init));

    ble_srv_ascii_to_utf8(&dis_init.manufact_name_str, (char *)MANUFACTURER_NAME);

    dis_init.dis_char_rd_sec = SEC_OPEN;

    err_code = ble_dis_init(&dis_init);
    APP_ERROR_CHECK(err_code);
}


/**@brief Function for initializing the sensor simulators. */
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);

    m_heart_rate_sim_cfg.min          = MIN_HEART_RATE;
    m_heart_rate_sim_cfg.max          = MAX_HEART_RATE;
    m_heart_rate_sim_cfg.incr         = HEART_RATE_INCREMENT;
    m_heart_rate_sim_cfg.start_at_max = false;

    sensorsim_init(&m_heart_rate_sim_state, &m_heart_rate_sim_cfg);

    m_rr_interval_sim_cfg.min          = MIN_RR_INTERVAL;
    m_rr_interval_sim_cfg.max          = MAX_RR_INTERVAL;
    m_rr_interval_sim_cfg.incr         = RR_INTERVAL_INCREMENT;
    m_rr_interval_sim_cfg.start_at_max = false;

    sensorsim_init(&m_rr_interval_sim_state, &m_rr_interval_sim_cfg);
}


/**@brief   Function for starting application timers.
 * @details Timers are run after the scheduler has started.
 */
static void application_timers_start(void)
{
    // Start application timers.
    if (pdPASS != xTimerStart(m_battery_timer, OSTIMER_WAIT_FOR_QUEUE))
    {
        APP_ERROR_HANDLER(NRF_ERROR_NO_MEM);
    }
    if (pdPASS != xTimerStart(m_heart_rate_timer, OSTIMER_WAIT_FOR_QUEUE))
    {
        APP_ERROR_HANDLER(NRF_ERROR_NO_MEM);
    }
    if (pdPASS != xTimerStart(m_rr_interval_timer, OSTIMER_WAIT_FOR_QUEUE))
    {
        APP_ERROR_HANDLER(NRF_ERROR_NO_MEM);
    }
    if (pdPASS != xTimerStart(m_sensor_contact_timer, OSTIMER_WAIT_FOR_QUEUE))
    {
        APP_ERROR_HANDLER(NRF_ERROR_NO_MEM);
    }
}


/**@brief Function for handling the Connection Parameters Module.
 *
 * @details This function will be called for all events in the Connection Parameters Module which
 *          are passed to the application.
 *          @note All this function does is to disconnect. This could have been done by simply
 *                setting the disconnect_on_fail config parameter, but instead we use the event
 *                handler mechanism to demonstrate its use.
 *
 * @param[in]   p_evt   Event received from the Connection Parameters Module.
 */
static void on_conn_params_evt(ble_conn_params_evt_t * p_evt)
{
    ret_code_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);
    }
}


/**@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    = m_hrs.hrm_handles.cccd_handle;
    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);
}


/**@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 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)
{
    uint32_t err_code;

    switch (ble_adv_evt)
    {
        case BLE_ADV_EVT_FAST:
            NRF_LOG_INFO("Fast advertising.");
            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;
    }
}

/**@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 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)
{
    uint32_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");
            m_conn_handle = BLE_CONN_HANDLE_INVALID;
            delete_bonds();
            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_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_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 handling events from the BSP module.
 *
 * @param[in]   event   Event generated by button press.
 */
static void bsp_event_handler(bsp_event_t event)
{
    ret_code_t err_code;

    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;

        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)
{
    ret_code_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      = true;
    init.advdata.flags                   = BLE_GAP_ADV_FLAGS_LE_ONLY_GENERAL_DISC_MODE;
    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_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);
}


/**@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 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 starting advertising. */
static void advertising_start(void * p_erase_bonds)
{
    bool erase_bonds = *(bool*)p_erase_bonds;

    if (erase_bonds)
    {
        delete_bonds();
        // Advertising is started by PM_EVT_PEERS_DELETE_SUCCEEDED event.
    }
    else
    {
        ret_code_t err_code = ble_advertising_start(&m_advertising, BLE_ADV_MODE_FAST);
        APP_ERROR_CHECK(err_code);
    }
}


#if NRF_LOG_ENABLED
/**@brief Thread for handling the logger.
 *
 * @details This thread is responsible for processing log entries if logs are deferred.
 *          Thread flushes all log entries and suspends. It is resumed by idle task hook.
 *
 * @param[in]   arg   Pointer used for passing some arbitrary information (context) from the
 *                    osThreadCreate() call to the thread.
 */
static void logger_thread(void * arg)
{
    UNUSED_PARAMETER(arg);

    while (1)
    {
        NRF_LOG_FLUSH();

        vTaskSuspend(NULL); // Suspend myself
    }
}
#endif //NRF_LOG_ENABLED

/**@brief A function which is hooked to idle task.
 * @note Idle hook must be enabled in FreeRTOS configuration (configUSE_IDLE_HOOK).
 */
void vApplicationIdleHook( void )
{
#if NRF_LOG_ENABLED
     vTaskResume(m_logger_thread);
#endif
}


/**@brief Function for initializing the clock.
 */
static void clock_init(void)
{
    ret_code_t err_code = nrf_drv_clock_init();
    APP_ERROR_CHECK(err_code);
}


/**@brief Function for application main entry.
 */
int main(void)
{
    bool erase_bonds;

    // Initialize modules.
    log_init();
    clock_init();

    // Do not start any interrupt that uses system functions before system initialisation.
    // The best solution is to start the OS before any other initalisation.

#if NRF_LOG_ENABLED
    // Start execution.
    if (pdPASS != xTaskCreate(logger_thread, "LOGGER", 256, NULL, 1, &m_logger_thread))
    {
        APP_ERROR_HANDLER(NRF_ERROR_NO_MEM);
    }
#endif

    // Activate deep sleep mode.
    SCB->SCR |= SCB_SCR_SLEEPDEEP_Msk;

    // Configure and initialize the BLE stack.
    ble_stack_init();

    // Initialize modules.
    timers_init();
    buttons_leds_init(&erase_bonds);
    gap_params_init();
    gatt_init();
    advertising_init();
    services_init();
    sensor_simulator_init();
    conn_params_init();
    peer_manager_init();
    application_timers_start();
    // Create a FreeRTOS task for the BLE stack.
    // The task will run advertising_start() before entering its loop.
    nrf_sdh_freertos_init(advertising_start, &erase_bonds);

    NRF_LOG_INFO("HRS FreeRTOS example started.");
    // Start FreeRTOS scheduler.
    vTaskStartScheduler();

    for (;;)
    {
        APP_ERROR_HANDLER(NRF_ERROR_FORBIDDEN);
    }
}

RE: How to delete all pairs in connection

haakonsh — Tue, 15 Jan 2019 11:46:10 GMT

Error 0x3204 (12804dec) is defined in ble_gap.h:

BLE_ERROR_GAP_DEVICE_IDENTITIES_IN_USE /**< Attempt to modify the device identity list while already in use by another operation. */

From the pm_device_identities_list_set API docs:

BLE_ERROR_GAP_DEVICE_IDENTITIES_IN_USE

If the device identities list is in use and cannot be set.

From ble_advertising_init API docs:

Return values

NRF_SUCCESS	If initialization was successful.
NRF_ERROR_INVALID_PARAM	If the advertising configuration in `p_init` is invalid.

Returns: If functions from other modules return errors to this function, the SoftDevice Global Error Codes are propagated.

Since the only two valid return codes are NRF_SUCCESS and NRF_ERROR_INVALID_PARAM a return code of 18dec must be a propogated return code from one of the functions inside ble_advertising_init. You will need to find the source of the error inside ble_advertising_init.

RE: How to delete all pairs in connection

shenwrt — Sun, 13 Jan 2019 08:35:09 GMT

ble_advertising_start return:ERROR 18 And pm_device_identities_list_set return ERROR 12804

RE: How to delete all pairs in connection

haakonsh — Fri, 11 Jan 2019 13:35:38 GMT

What function originally returns the error?

RE: How to delete all pairs in connection

shenwrt — Fri, 11 Jan 2019 12:41:54 GMT

Keyboard example

RE: How to delete all pairs in connection

shenwrt — Fri, 11 Jan 2019 12:40:50 GMT

My approach is to call ble_gap_disconnect first, then pm_peers_delete, but fatal errors still occur. What is the correct way? thank you.

RE: How to delete all pairs in connection

haakonsh — Thu, 10 Jan 2019 10:25:34 GMT

There's a chance that you end up in an undefined state if you're doing connectable advertisements.

You can broadcast as much as you like.

RE: How to delete all pairs in connection

shenwrt — Wed, 09 Jan 2019 15:09:50 GMT

If I call "ble_gap_disconnect" before it, it can only delete peers if it is not broadcast?

RE: How to delete all pairs in connection

haakonsh — Wed, 09 Jan 2019 13:45:52 GMT

Did you heed the warning?
"
Warning: Use this function only when not connected or connectable. If a peer is or becomes connected or a PM_PEER_DATA_FUNCTIONS function is used during this procedure (until the success or failure event happens), the behavior is undefined.

RE: How to delete all pairs in connection

shenwrt — Wed, 09 Jan 2019 13:15:58 GMT

thanks,But every time I get an error:Fatal error

RE: How to delete all pairs in connection

haakonsh — Wed, 09 Jan 2019 12:09:30 GMT

See pm_peers_delete