Revert "Linear decrease of advert rate to conserve battery"

This reverts commit c32ba84.

Author: evergreen22

src/components/ble/NimbleController.cpp

@@ -122,8 +122,6 @@ void NimbleController::StartAdvertising() {
 
   adv_params.conn_mode = BLE_GAP_CONN_MODE_UND;
   adv_params.disc_mode = BLE_GAP_DISC_MODE_GEN;
-  adv_params.itvl_min = advInterval;
-  adv_params.itvl_max = advInterval + 100;
 
   fields.flags = BLE_HS_ADV_F_DISC_GEN | BLE_HS_ADV_F_BREDR_UNSUP;
   fields.uuids128 = &dfuServiceUuid;
@@ -150,8 +148,6 @@ int NimbleController::OnGAPEvent(ble_gap_event* event) {
     case BLE_GAP_EVENT_ADV_COMPLETE:
       NRF_LOG_INFO("Advertising event : BLE_GAP_EVENT_ADV_COMPLETE");
       NRF_LOG_INFO("reason=%d; status=%d", event->adv_complete.reason, event->connect.status);
-      if (advInterval < 7100)
-        advInterval += 500;
       StartAdvertising();
       break;
 
@@ -185,7 +181,6 @@ int NimbleController::OnGAPEvent(ble_gap_event* event) {
       alertNotificationClient.Reset();
       connectionHandle = BLE_HS_CONN_HANDLE_NONE;
       bleController.Disconnect();
-      advInterval = 100;
       StartAdvertising();
       break;
 

src/components/ble/NimbleController.h

@@ -94,7 +94,6 @@ namespace Pinetime {
 
       uint8_t addrType; // 1 = Random, 0 = PUBLIC
       uint16_t connectionHandle = BLE_HS_CONN_HANDLE_NONE;
-      uint16_t advInterval = 100; // multiplied by 0.625ms, must be in 32..16384
 
       ble_uuid128_t dfuServiceUuid {
         .u {.type = BLE_UUID_TYPE_128},