SWRA466D February   2015  – August 2021 CC1310 , CC1310 , CC1352R , CC1352R , CC2538 , CC2538 , CC2620 , CC2620 , CC2630 , CC2630 , CC2640 , CC2640 , CC2640R2F , CC2640R2F , CC2640R2F-Q1 , CC2640R2F-Q1 , CC2642R , CC2642R , CC2642R-Q1 , CC2642R-Q1 , CC2650 , CC2650 , CC2650MODA , CC2650MODA , CC2652R , CC2652R , CC2652R7 , CC2652R7 , CC2652RB , CC2652RB , CC2652RSIP , CC2652RSIP

 

  1.   Trademarks
  2. 1Introduction
  3. 2ROM Bootloader
    1. 2.1 Configuring the Bootloader
      1. 2.1.1 CC2538
      2. 2.1.2 CC26x0
    2. 2.2 CC26x2
    3. 2.3 Communication Protocol
      1. 2.3.1 ACK/NACK
    4. 2.4 Interface Configuration
      1. 2.4.1 Hardware Pins
      2. 2.4.2 UART Configuration
      3. 2.4.3 Establishing Communication
      4. 2.4.4 Status Command
  4. 3Serial Bootloader Library (SBL)
    1. 3.1 SBL Return Values
    2. 3.2 SBL API
      1. 3.2.1 Device-Specific Functions
  5. 4Example Project
    1. 4.1 Hardware Setup
      1. 4.1.1 SmartRF06EB Virtual COM Port
        1. 4.1.1.1 External Serial Interface
      2. 4.1.2 LaunchPad Virtual COM Port
      3. 4.1.3 Bootloader Backdoor
    2. 4.2 Software Setup
      1. 4.2.1 Device Type
      2. 4.2.2 Baud Rate
    3. 4.3 Program Flow
      1. 4.3.1 Enumerate COM Ports
      2. 4.3.2 Create Device
      3. 4.3.3 Connect
      4. 4.3.4 Erase Flash Range
      5. 4.3.5 Write Flash Range
      6. 4.3.6 Calculate CRC32
      7. 4.3.7 Reset
  6. 5References
  7. 6Revision History

3 Serial Bootloader Library (SBL)

The SBL is a PC library for Microsoft Windows that implements a host API for communicating with the CC2538, CC26x0, and CC26x2 serial bootloaders. The SBL library project is created in Visual Studio C++ Professional 2015. The serial bootloader library uses Windows API to communicate with the serial COM port and therefore is not cross-platform compatible.

All functions in SBL are synchronous; meaning that the function will not return until ACK or NACK have been received or an error has occurred. Figure 3-1 demonstrates a sequence chart of the SBL ping() function.

GUID-B8D1A9C0-C493-4F70-92D6-FA3869C8ADDB-low.gifFigure 3-1 Sequence Chart for Ping Function Call

All bootloader commands can be accessed through functions within SBL; which makes it easy to execute operations like erasing and writing to the flash memory directly through SBL.

For a more detailed description of the ROM bootloader and how to use all the serial commands, see the device-specific ROM user’s guide [1], [2], and [3].