more clean up

Author: hathach

README.md

@@ -145,7 +145,9 @@ which in turn is based on the [Arduino SAMD Core](https://github.com/arduino/Ard
 The following libraries are used:
 
 - adafruit-nrfutil is based on Nordic Semiconductor ASA's [pc-nrfutil](https://github.com/NordicSemiconductor/pc-nrfutil)
+- freeRTOS as operating system
 - [tinyusb](https://github.com/hathach/tinyusb) as usb stack
 - [nrfx](https://github.com/NordicSemiconductor/nrfx) for peripherals driver
 - [littlefs](https://github.com/ARMmbed/littlefs) for internal file system
-- [fatfs by elm-chan](http://elm-chan.org/fsw/ff/00index_e.html) for external file system
+- [fatfs by elm-chan](http://elm-chan.org/fsw/ff/00index_e.html) for external file system
+- Segger Sysview for debugging.

changelog.md

@@ -5,12 +5,14 @@
 - Feather nRF52840 support
 - Upgrade bootloader to v6.1.0 ( single bank only )
 - Upgrade freeRTOS from v8 to v10.0.1
+- Upgrade Segger SysView to 2.52d
 - Added nrfx to core
 - Added tinyusb stack to libraries
 - Added LittleFS to replace NFFS
 - Added FileSystem Libraries base on SD File API
   - InternalFS use LittleFS to manage internal flash for bonding and other user data
   - ExternalFS use fatfs to manage external spi flash (nrf52840 only) for usb msc.
+- Replace cpritnf by std printf  
 
 ## 0.8.6
 

cores/nRF5/sysview/library.properties

@@ -353,8 +353,8 @@ bool BLEAdvertising::_start(uint16_t interval, uint16_t timeout)
       //.primary_phy, .secondary_phy, .set_id, .scan_req_notification
   };
 
-  // Configure Data
-  ble_gap_adv_data_t gap_adv =
+  // gap_adv long-live is required by SD v6
+  static ble_gap_adv_data_t gap_adv =
   {
       .adv_data      = { .p_data = _data, .len = _count },
       .scan_rsp_data = { .p_data = Bluefruit.ScanResponse.getData(), .len = Bluefruit.ScanResponse.count() }