SLAU550AB January   2014  – September 2022 MSP430FR2032 , MSP430FR2033 , MSP430FR2110 , MSP430FR2111 , MSP430FR2153 , MSP430FR2155 , MSP430FR2310 , MSP430FR2311 , MSP430FR2353 , MSP430FR2355 , MSP430FR2433 , MSP430FR2532 , MSP430FR2533 , MSP430FR2632 , MSP430FR2633 , MSP430FR4131 , MSP430FR4132 , MSP430FR4133 , MSP430FR5041 , MSP430FR5043 , MSP430FR50431 , MSP430FR5847 , MSP430FR58471 , MSP430FR5848 , MSP430FR5849 , MSP430FR5857 , MSP430FR5858 , MSP430FR5859 , MSP430FR5867 , MSP430FR58671 , MSP430FR5868 , MSP430FR5869 , MSP430FR5887 , MSP430FR5888 , MSP430FR5889 , MSP430FR58891 , MSP430FR5947 , MSP430FR59471 , MSP430FR5948 , MSP430FR5949 , MSP430FR5957 , MSP430FR5958 , MSP430FR5959 , MSP430FR5967 , MSP430FR5968 , MSP430FR5969 , MSP430FR5969-SP , MSP430FR59691 , MSP430FR5986 , MSP430FR5987 , MSP430FR5988 , MSP430FR5989 , MSP430FR5989-EP , MSP430FR59891 , MSP430FR6041 , MSP430FR6043 , MSP430FR60431 , MSP430FR6877 , MSP430FR6879 , MSP430FR68791 , MSP430FR6887 , MSP430FR6888 , MSP430FR6889 , MSP430FR68891 , MSP430FR6927 , MSP430FR69271 , MSP430FR6928 , MSP430FR6972 , MSP430FR6977 , MSP430FR6979 , MSP430FR69791 , MSP430FR6987 , MSP430FR6988 , MSP430FR6989 , MSP430FR69891

 

  1.   Abstract
  2.   Trademarks
  3. 1Introduction
    1. 1.1 BSL Limitations
    2. 1.2 Other Useful Documentation
  4. 2Overview of BSL Features
  5. 3BSL Architecture
    1. 3.1 Communication Interface
      1. 3.1.1 UART BSL
      2. 3.1.2 I2C BSL
    2. 3.2 BSL Memory
      1. 3.2.1 BSL Memory Layout
      2. 3.2.2 BSL Z-Area
      3. 3.2.3 BSL Memory Consideration
    3. 3.3 BSL Invocation
      1. 3.3.1 Software BSL Invocation
        1. 3.3.1.1 Starting the BSL From an External Software Application
        2. 3.3.1.2 BSL Action
          1. 3.3.1.2.1 BSL Action Function 2
      2. 3.3.2 Hardware BSL Invocation
        1. 3.3.2.1 Factors That Prevent Hardware BSL Invocation
      3. 3.3.3 Blank Device Detection
    4. 3.4 BSL Time-out Feature
    5. 3.5 BSL Version Number
    6. 3.6 BSL (User) Configuration
      1. 3.6.1 Configuring the BSL
        1. 3.6.1.1 Example of BSL User Configuration
        2. 3.6.1.2 Implement BSL Configuration in Application Code
  6. 4BSL Protocol
    1. 4.1 BSL Data Packet
      1. 4.1.1 UART Peripheral Interface Wrapper
      2. 4.1.2 I2C Peripheral Interface Wrapper
      3. 4.1.3 BSL Acknowledgment
      4. 4.1.4 BSL Core Response and BSL Core Message
      5. 4.1.5 BSL Core Commands
        1. 4.1.5.1 RX Data Block
        2. 4.1.5.2 RX Password
        3. 4.1.5.3 Mass Erase
        4. 4.1.5.4 CRC Check
        5. 4.1.5.5 Load PC
        6. 4.1.5.6 TX Data Block
        7. 4.1.5.7 TX BSL Version
        8. 4.1.5.8 RX Data Block Fast
        9. 4.1.5.9 Change Baud Rate
    2. 4.2 BSL Security
      1. 4.2.1 Protected Commands
      2. 4.2.2 RAM Erase
      3. 4.2.3 BSL Entry
  7. 5Common BSL Use Cases
    1. 5.1 Overview and Flow Chart
    2. 5.2 Establish a Connection
    3. 5.3 Erase the Device
    4. 5.4 Download the Application
    5. 5.5 Verify the Application
    6. 5.6 Run the Application
  8. 6Customize the BSL
  9. 7Bootloader Versions
    1. 7.1 FR2xx BSL Versions
    2. 7.2 FR4xx BSL Versions
    3. 7.3 FR57xx BSL Versions
    4. 7.4 FR58xx and FR59xx BSL Versions
    5. 7.5 FR6xx BSL Versions
  10. 8Revision History

4.1.2 I2C Peripheral Interface Wrapper

The I2C BSL protocol interface is implemented in multiple packets. The first packet is sent as a write request to the BSL slave address and contains the BSL Core Command and its wrapper. Table 4-4 shows this format.

Table 4-4 I2C BSL Command
I2CHeaderLengthLengthBSL Core CommandCKLCKH
S/A/W0x80NLNHSee Section 4.1.5CKLCKH

The second packet is sent as a read request to the BSL slave address and contains the BSL acknowledgment and the BSL Core Response. Table 4-5 shows the format of this BSL response.

Table 4-5 I2C BSL Response
I2CACKHeaderLengthLengthBSL Core Response(1)CKLCKHI2C
S/A/RACK from BSL0x80NLNHSee Section 4.1.4CKLCKHSTOP
(1) BSL Core Response is not always included.