Revision history

Updated:

• Bluetooth version support raised from 5.0 to 5.1.

• Replaced IC specific links with a link to the nRF52 Series found on Infocenter in Additional documentation.
• Removed peripherals that will not be blocked or restricted by the SoftDevice from Hardware peripherals. Base addresses and IDs for peripherals are also removed. For this information, see relevant product specification in Additional documentation.
• Removed IC specific flash operation timing numbers from Flash memory API. For this information, see relevant product specification in Additional documentation.

Updated:

• Master boot record and Bootloader to align with MBR version 2.4.

Added:

• Paragraph about extended RC calibration in Clock source.
• Paragraph about throughput calculations in Bluetooth Low Energy data throughput.
• Documentation related to LE Extended Advertising in:
  • Flash memory API.
  • LL features in the Bluetooth Low Energy stack.
  • Radio Notification.
  • Scheduling.
  • Bluetooth Low Energy power profiles.
• Glossary.
• Acronyms and abbreviations.

Updated:

• List of key features and applications in S132 SoftDevice.
• Programmable peripheral interconnect now references the hardware resource API instead of listing the PPI channel and group ranges.
• PA pin timings in Power amplifier and low noise amplifier control configuration.
• MBR, SoftDevice, and bootloader architecture to align with the layout of the bootloader from nRF5 SDK.
• Processor availability and interrupt processing time for all Bluetooth® Low Energy roles in Bluetooth Low Energy processor usage patterns.

Added:

• Application control of MTU size, packet length, and PHY in API features in the Bluetooth Low Energy stack
• Quality of Service and Channel map for Observer role in Proprietary features in the Bluetooth Low Energy stack

Updated:

• List of key features in S132 SoftDevice.
• Profile and service support. Updated the list of profiles and services currently adopted by the Bluetooth Special Interest Group.
• LL features in the Bluetooth Low Energy stack.
• Proprietary features in the Bluetooth Low Energy stack.
• Bluetooth Low Energy role configuration.
• SoftDevice information structure
• SoftDevice memory usage: The flash memory and minimum RAM requirements of the SoftDevice are no longer provided in this document. See the release notes for this information.
• SoftDevice timing-activities and priorities.

Updated:

• Allocation of software interrupt vectors to SoftDevice signals. Two of the SWI priorities were changed in the S132 5.0.0 SoftDevice, but were not updated accordingly in the S132 SDS v5.0. S132 SDS v5.1 has the correct interrupt priorities for both the S132 5.1.0 and 5.0.0 SoftDevices.
• SoftDevice memory usage: Reduced SoftDevice RAM requirements.
• Interrupt latency for open peripheral interrupt in Additional latency due to SoftDevice and MBR forwarding interrupts
• Removed references to the Bandwidth Configuration API. This was removed from the SoftDevice in version 4.0.0.
• Hardware access type definitions, Hardware peripherals with limited availability to the application

Added:

• L2CAP features in the Bluetooth Low Energy stack

Updated:

• LL features in the Bluetooth Low Energy stack
• Suggested intervals and windows
• Data throughput for a single connection with 23 byte ATT MTU
• Data throughput for a single connection with 247 byte ATT MTU
• Bluetooth Low Energy power profiles

Updated:

• Allocation of software interrupt vectors to SoftDevice signals
• List of interrupt levels in Interrupt priority levels
• Exception model
• Typical processing time calculations in sections Bluetooth Low Energy Advertiser (Broadcaster) processor usage, Bluetooth Low Energy peripheral connection processor usage, Bluetooth Low Energy scanner and initiator processor usage, and Bluetooth Low Energy central connection processor usage

Updated:

• List of key features in S132 SoftDevice Specification.
• Allocation of software interrupt vectors to SoftDevice signals, GATT features in the Bluetooth Low Energy stack, LL features in the Bluetooth Low Energy stack, Radio Notification notation and terminology, Bluetooth Low Energy Radio Notification timing ranges, Scheduling priorities, Peripheral role timing ranges, Processor usage when advertising, Processor usage when connected, Processor usage for scanning or initiating, Processor usage latency when connected, Data throughput for a single connection with 23 byte ATT MTU , Data throughput for a single connection with 247 byte ATT MTU , Data throughput for up to 8 connections,
• Section Bluetooth Low Energy role configuration.
• Notation for timing constants in text and figures in Radio Notification and Scheduling.
• Section Role configuration.
• Section SoftDevice timing-activities and priorities.
• Section Connection timing as a Central.
• Section Suggested intervals and windows.

Updated:

• Events - SoftDevice to Application Section in Events - SoftDevice to application.
• Hardware access type definitions, Hardware peripherals with limited availability to the application, and Allocation of software interrupt vectors to SoftDevice signals.
• Section Advertiser timing.
• Figures of SoftDevice interrupt priority levels and processor usage patterns in Interrupt model and processor availability.
• Introductory text in Bluetooth Low Energy data throughput.

Added:

• Section High-frequency clock configuration.

Updated:

• List of key features in S132 SoftDevice Specification.
• Bluetooth Low Energy protocol stack, adding:
  • MTU exchange procedure and Write long characteristic values in GATT features in the Bluetooth Low Energy stack.
  • Numeric comparison in SM features in the Bluetooth Low Energy stack.
  • Configurable ATT_MTU size in ATT features in the Bluetooth Low Energy stack.
  • Data packet length extension, LE Ping, Privacy, and Extended scanner filter policies in LL features in the Bluetooth Low Energy stack.
• Radio Notification signals with an additional section on Radio Notification with Connection Event Length Extension.
• SoftDevice information structure.
• SoftDevice memory usage: updated SoftDevice flash memory and RAM requirements.
• Scheduling with an additional section on connection timing with Connection Event Length Extension, Connection timing with Connection Event Length Extension.
• Bluetooth Low Energy data throughput:
  • Updated figures of SoftDevice data throughput for single link on Data throughput for a single connection with 23 byte ATT MTU ,
  • Added table for maximum achievable single-link throughput: Data throughput for a single connection with 23 byte ATT MTU .

Updated:

• SoftDevice Manager. Added documentation on (previously in Appendix A):
  • Clock source
  • Power management
  • Memory isolation and runtime protection
• Hardware peripherals.
• Programmable peripheral interconnect. Documented PPI channel changes.
• Flash memory API. Documented changes and new numbers.
• Profile and service support. Updated the list of profiles and services currently adopted by the Bluetooth Special Interest Group.
• Radio Notification.
• Master boot record.
• Scheduling (previously Chapter 14: Multilink scheduling).
• Interrupt model and processor availability. Updated section to align with the new SoftDevice priority level structure.
• Bluetooth Low Energy data throughput. Updated documentation with new numbers.

Added:

• Application programming interface (previously in Appendix A). Now also including section Error handling.
• Bluetooth Low Energy role configuration.
• Power amplifier and low noise amplifier control configuration.
• SoftDevice memory usage (Memory resource map and usage and Attribute table size previously in Chapter 13: System on Chip resource requirements; Call Stack and Heap information previously in Appendix A can be found under Memory resource requirements).
• SoftDevice timing-activities and priorities.
• Timeslot API timing.