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main.c
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main.c
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#include <stdbool.h>
#include <stdint.h>
#include <string.h>
#include "nrf_dfu_ble_svci_bond_sharing.h"
#include "nrf_svci_async_function.h"
#include "nrf_svci_async_handler.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_conn_params.h"
#include "nrf_sdh.h"
#include "nrf_sdh_soc.h"
#include "nrf_sdh_ble.h"
#include "app_timer.h"
#include "peer_manager.h"
#include "peer_manager_handler.h"
#include "ble_hci.h"
#include "ble_advdata.h"
#include "ble_advertising.h"
#include "ble_conn_state.h"
#include "ble_dfu.h"
#include "nrf_ble_gatt.h"
#include "nrf_ble_qwr.h"
#include "fds.h"
#include "nrf_pwr_mgmt.h"
#include "nrf_drv_clock.h"
#include "nrf_power.h"
#include "nrf_log.h"
#include "nrf_log_ctrl.h"
#include "nrf_log_default_backends.h"
#include "nrf_bootloader_info.h"
#include "ble_bas.h"
#include "ble_dis.h"
#include "./device_information.h"
#include "./display.h"
#include "./app_rtc.h"
#include "./battery_saver.h"
#include "./app_shutdown_type.h"
#include "./battery.h"
#include "./timing_constants.h"
#include "./ble_digit.h"
#include "digit_ui_model.h"
#include "digit_ui.h"
#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 MIN_CONN_INTERVAL MSEC_TO_UNITS(390, UNIT_1_25_MS) /**< Minimum acceptable connection interval (0.1 seconds). */
#define MAX_CONN_INTERVAL MSEC_TO_UNITS(650, UNIT_1_25_MS) /**< Maximum acceptable connection interval (0.2 second). */
#define SLAVE_LATENCY 1 /**< Slave latency. */
#define CONN_SUP_TIMEOUT MSEC_TO_UNITS(4000, UNIT_10_MS) /**< Connection supervisory timeout (4 seconds). */
#define FIRST_CONN_PARAMS_UPDATE_DELAY APP_TIMER_TICKS(5000) /**< Time from initiating event (connect or start of notification) to first time sd_ble_gap_conn_param_update is called (5 seconds). */
#define NEXT_CONN_PARAMS_UPDATE_DELAY APP_TIMER_TICKS(30000) /**< Time between each call to sd_ble_gap_conn_param_update after the first call (30 seconds). */
#define MAX_CONN_PARAMS_UPDATE_COUNT 3 /**< Number of attempts before giving up the connection parameter negotiation. */
#define SEC_PARAM_BOND 1 /**< Perform bonding. */
#define SEC_PARAM_MITM 0 /**< Man In The Middle protection not required. */
#define SEC_PARAM_LESC 0 /**< LE Secure Connections not enabled. */
#define SEC_PARAM_KEYPRESS 0 /**< Keypress notifications not enabled. */
#define SEC_PARAM_IO_CAPABILITIES BLE_GAP_IO_CAPS_NONE /**< No I/O capabilities. */
#define SEC_PARAM_OOB 0 /**< Out Of Band data not available. */
#define SEC_PARAM_MIN_KEY_SIZE 7 /**< Minimum encryption key size. */
#define SEC_PARAM_MAX_KEY_SIZE 16 /**< Maximum encryption key size. */
#define DEAD_BEEF 0xDEADBEEF /**< Value used as error code on stack dump, can be used to identify stack location on stack unwind. */
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. */
BLE_BAS_DEF(m_bas);
BLE_DIGIT_DEF(m_digit);
APP_TIMER_DEF(battery_measurement_timer_id);
APP_TIMER_DEF(ui_timer_id);
APP_TIMER_DEF(time_timer_id);
static uint16_t m_conn_handle = BLE_CONN_HANDLE_INVALID; /**< Handle of the current connection. */
static void advertising_start(); /**< Forward declaration of advertising start function */
static void battery_measurment_timer_handler(void *p_context);
static void ui_timer_handler(void *p_context);
static void time_timer_handler(void *p_context);
static void ui_render();
static app_shutdown_type_t app_shutdown_type = APP_SHUTDOWNTYPE_NONE;
static digit_ui_state_t ui_state = DIGIT_UI_STATE_DEFAULT;
static ble_uuid_t m_adv_uuids[] = {
{BLE_UUID_DEVICE_INFORMATION_SERVICE, BLE_UUID_TYPE_BLE},
{BLE_UUID_BATTERY_SERVICE, BLE_UUID_TYPE_BLE}};
static bool app_shutdown_handler(nrf_pwr_mgmt_evt_t event)
{
switch (event)
{
case NRF_PWR_MGMT_EVT_PREPARE_DFU:
app_shutdown_type = APP_SHUTDOWNTYPE_DFU;
NRF_LOG_INFO("Power management wants to reset to DFU mode.");
break;
default:
return true;
}
NRF_LOG_INFO("Power management allowed to reset to DFU mode.");
return true;
}
NRF_PWR_MGMT_HANDLER_REGISTER(app_shutdown_handler, 0);
static void app_sdh_state_observer_cb(nrf_sdh_state_evt_t state, void *p_context)
{
if (state == NRF_SDH_EVT_STATE_DISABLED)
{
if (app_shutdown_type == APP_SHUTDOWNTYPE_DFU)
{
nrf_power_gpregret2_set(BOOTLOADER_DFU_SKIP_CRC);
nrf_pwr_mgmt_shutdown(NRF_PWR_MGMT_SHUTDOWN_GOTO_SYSOFF);
}
else if (app_shutdown_type == APP_SHUTDOWNTYPE_POWER)
{
enter_battery_saver();
}
}
}
NRF_SDH_STATE_OBSERVER(app_sdh_state_observer, 0) =
{
.handler = app_sdh_state_observer_cb,
};
static void advertising_config_get(ble_adv_modes_config_t *p_config)
{
memset(p_config, 0, sizeof(ble_adv_modes_config_t));
p_config->ble_adv_directed_enabled = true;
p_config->ble_adv_directed_interval = 32; // 20 ms
p_config->ble_adv_directed_timeout = 3000; // 30 sec
p_config->ble_adv_fast_enabled = true;
p_config->ble_adv_fast_interval = 510; // 318.75 ms
p_config->ble_adv_fast_timeout = 12000; // 120 sec
p_config->ble_adv_slow_enabled = true;
p_config->ble_adv_slow_interval = 2056; // 1285 ms
p_config->ble_adv_slow_timeout = 0;
}
static void disconnect(uint16_t conn_handle, void *p_context)
{
UNUSED_PARAMETER(p_context);
ret_code_t err_code = sd_ble_gap_disconnect(conn_handle, BLE_HCI_REMOTE_USER_TERMINATED_CONNECTION);
if (err_code != NRF_SUCCESS)
{
NRF_LOG_WARNING("Failed to disconnect connection. Connection handle: %d Error: %d", conn_handle, err_code);
}
else
{
NRF_LOG_DEBUG("Disconnected connection handle %d", conn_handle);
}
}
static void ble_dfu_evt_handler(ble_dfu_buttonless_evt_type_t event)
{
switch (event)
{
case BLE_DFU_EVT_BOOTLOADER_ENTER_PREPARE:
{
NRF_LOG_INFO("Device is preparing to enter bootloader mode.");
// Prevent device from advertising on disconnect.
ble_adv_modes_config_t config;
advertising_config_get(&config);
config.ble_adv_on_disconnect_disabled = true;
ble_advertising_modes_config_set(&m_advertising, &config);
// Disconnect all other bonded devices that currently are connected.
// This is required to receive a service changed indication
// on bootup after a successful (or aborted) Device Firmware Update.
uint32_t conn_count = ble_conn_state_for_each_connected(disconnect, NULL);
NRF_LOG_INFO("Disconnected %d links.", conn_count);
break;
}
case BLE_DFU_EVT_BOOTLOADER_ENTER:
// YOUR_JOB: Write app-specific unwritten data to FLASH, control finalization of this
// by delaying reset by reporting false in app_shutdown_handler
NRF_LOG_INFO("Device will enter bootloader mode.");
break;
case BLE_DFU_EVT_BOOTLOADER_ENTER_FAILED:
NRF_LOG_ERROR("Request to enter bootloader mode failed asynchroneously.");
// YOUR_JOB: Take corrective measures to resolve the issue
// like calling APP_ERROR_CHECK to reset the device.
break;
case BLE_DFU_EVT_RESPONSE_SEND_ERROR:
NRF_LOG_ERROR("Request to send a response to client failed.");
// YOUR_JOB: Take corrective measures to resolve the issue
// like calling APP_ERROR_CHECK to reset the device.
APP_ERROR_CHECK(false);
break;
default:
NRF_LOG_ERROR("Unknown event from ble_dfu_buttonless.");
break;
}
}
void assert_nrf_callback(uint16_t line_num, const uint8_t *p_file_name)
{
app_error_handler(DEAD_BEEF, line_num, p_file_name);
}
static void pm_evt_handler(pm_evt_t const *p_evt)
{
pm_handler_on_pm_evt(p_evt);
pm_handler_flash_clean(p_evt);
switch (p_evt->evt_id)
{
case PM_EVT_CONN_SEC_FAILED:
if (PM_PEER_ID_INVALID != p_evt->peer_id)
{
NRF_LOG_ERROR("Deleted peer %d", p_evt->peer_id);
pm_peer_delete(p_evt->peer_id);
}
break;
default:
break;
}
}
static void timers_init(void)
{
uint32_t err_code = app_timer_init();
err_code = app_timer_create(&battery_measurement_timer_id,
APP_TIMER_MODE_SINGLE_SHOT,
battery_measurment_timer_handler);
APP_ERROR_CHECK(err_code);
err_code = app_timer_create(&ui_timer_id,
APP_TIMER_MODE_REPEATED,
ui_timer_handler);
APP_ERROR_CHECK(err_code);
err_code = app_timer_create(&time_timer_id,
APP_TIMER_MODE_REPEATED,
time_timer_handler);
APP_ERROR_CHECK(err_code);
}
static void gap_params_init(void)
{
uint32_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_GENERIC_WATCH);
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 nrf_qwr_error_handler(uint32_t nrf_error)
{
APP_ERROR_HANDLER(nrf_error);
}
static void services_init(void)
{
uint32_t err_code;
nrf_ble_qwr_init_t qwr_init = {0};
ble_dfu_buttonless_init_t dfus_init = {0};
ble_bas_init_t bas_init;
ble_dis_init_t dis_init;
ble_digit_init_t digit_init;
// 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);
dfus_init.evt_handler = ble_dfu_evt_handler;
err_code = ble_dfu_buttonless_init(&dfus_init);
APP_ERROR_CHECK(err_code);
memset(&bas_init, 0, sizeof(bas_init));
bas_init.evt_handler = NULL;
bas_init.support_notification = false;
bas_init.p_report_ref = NULL;
bas_init.initial_batt_level = 0;
bas_init.bl_rd_sec = SEC_OPEN;
bas_init.bl_cccd_wr_sec = SEC_OPEN;
bas_init.bl_report_rd_sec = SEC_OPEN;
err_code = ble_bas_init(&m_bas, &bas_init);
APP_ERROR_CHECK(err_code);
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_JUST_WORKS;
err_code = ble_dis_init(&dis_init);
APP_ERROR_CHECK(err_code);
memset(&digit_init, 0, sizeof(digit_init));
digit_init.state = &ui_state;
digit_init.ui_state_changed = ui_render;
err_code = ble_digit_init(&m_digit, &digit_init);
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);
}
static void application_timers_start(void)
{
APP_ERROR_CHECK(app_timer_start(ui_timer_id, APP_TIMER_TICKS(UI_RENDER_MS), NULL));
APP_ERROR_CHECK(app_timer_start(time_timer_id, APP_TIMER_TICKS(TIME_TIMER_MS), NULL));
}
static void on_adv_evt(ble_adv_evt_t ble_adv_evt)
{
switch (ble_adv_evt)
{
case BLE_ADV_EVT_FAST:
NRF_LOG_INFO("Fast advertising.");
break;
case BLE_ADV_EVT_IDLE:
NRF_LOG_INFO("Advertising idle.");
break;
default:
break;
}
}
static void ble_evt_handler(ble_evt_t const *p_ble_evt, void *p_context)
{
uint32_t err_code = NRF_SUCCESS;
switch (p_ble_evt->header.evt_id)
{
case BLE_GAP_EVT_DISCONNECTED:
NRF_LOG_INFO("Disconnected, reason %d.", p_ble_evt->evt.gap_evt.params.disconnected.reason);
m_conn_handle = BLE_CONN_HANDLE_INVALID;
break;
case BLE_GAP_EVT_CONNECTED:
NRF_LOG_INFO("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_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;
}
}
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);
NRF_SDH_BLE_OBSERVER(m_ble_observer, APP_BLE_OBSERVER_PRIO, ble_evt_handler, NULL);
}
static void peer_manager_init()
{
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);
}
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 = 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;
advertising_config_get(&init.config);
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 log_init(void)
{
uint32_t err_code = NRF_LOG_INIT(NULL);
APP_ERROR_CHECK(err_code);
NRF_LOG_DEFAULT_BACKENDS_INIT();
}
static void gatt_init(void)
{
ret_code_t err_code = nrf_ble_gatt_init(&m_gatt, NULL);
APP_ERROR_CHECK(err_code);
}
static void advertising_start()
{
uint32_t err_code = ble_advertising_start(&m_advertising, BLE_ADV_MODE_FAST);
APP_ERROR_CHECK(err_code);
NRF_LOG_DEBUG("advertising is started");
}
static void power_management_init(void)
{
uint32_t err_code = nrf_pwr_mgmt_init();
APP_ERROR_CHECK(err_code);
}
static void idle_state_handle(void)
{
if (NRF_LOG_PROCESS() == false)
{
nrf_pwr_mgmt_run();
}
}
static void battery_measurment_timer_handler(void *p_context)
{
UNUSED_PARAMETER(p_context);
battery_management_trigger();
}
static void ui_timer_handler(void *p_context)
{
UNUSED_PARAMETER(p_context);
ui_render();
}
static void time_timer_handler(void *p_context)
{
UNUSED_PARAMETER(p_context);
ui_state.current_time += TIME_TIMER_S;
}
static void ui_render()
{
digit_ui_render(&ui_state);
transfer_buffer_to_display();
switch_display_mode();
}
static void battery_management_callback(battery_state_t *state)
{
switch (state->battery_level)
{
case BATTERY_LEVEL_OK:
APP_ERROR_CHECK(app_timer_start(battery_measurement_timer_id, APP_TIMER_TICKS(DEVICE_ON_BATTERY_MEASUREMENT_INTERVAL_MS), NULL));
break;
case BATTERY_LEVEL_APPROACHING_LOW:
APP_ERROR_CHECK(app_timer_start(battery_measurement_timer_id, APP_TIMER_TICKS(DEVICE_APPROACHING_LOW_BATTERY_MEASUREMENT_INTERVAL_MS), NULL));
case BATTERY_LEVEL_LOW:
case BATTERY_LEVEL_CRITICAL:
NRF_LOG_INFO("Digit battery save shutdown.");
app_timer_stop_all();
display_uninit();
app_shutdown_type = APP_SHUTDOWNTYPE_POWER;
nrf_sdh_disable_request();
break;
default:
break;
}
ble_bas_battery_level_update(&m_bas, battery_level_percentage(state), BLE_CONN_HANDLE_ALL);
}
int main(void)
{
log_init();
timers_init();
power_management_init();
if (!start_battery_saver())
{
ret_code_t err_code;
err_code = ble_dfu_buttonless_async_svci_init();
APP_ERROR_CHECK(err_code);
ble_stack_init();
peer_manager_init();
gap_params_init();
gatt_init();
advertising_init();
services_init();
conn_params_init();
NRF_LOG_INFO("Digit started.");
battery_management_init(&battery_management_callback);
application_timers_start();
advertising_start();
display_init();
sd_power_dcdc_mode_set(NRF_POWER_DCDC_ENABLE);
// removing this won't ever start the measurement timer
battery_management_trigger();
}
for (;;)
{
idle_state_handle();
}
}