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

4.1.5.4 CRC Check

Structure BSL Core Command

BSL CommandProtectedCMDALAMAHDataBSL Core Response
CRC CheckYes0x16(AL)(AM)(AH)Length (low byte), Length (high byte)Yes

Description

The MSP430 performs a 16-bit CRC check using the CCITT standard. The address given is the first byte of the CRC check. Two bytes are used for the length. See the CRC chapter of each Family User's Guide (see Section 1.2) for more details on the CRC hardware calculation that is used.

Protection

This command is password protected and fails if the password has not been sent.

Command

0x16

Command Address

Address to begin the CRC check.

Command Data

The 16-bit length of the CRC check. D1 is the low byte of the length, and D2 is the high byte of the length.

Command Returns

BSL acknowledgment and a BSL core response with the CRC value. See Section 4.1.4 for more information on BSL core responses.

Example for UART PI

Perform a CRC check from address 0x4400 to 0x4800 (size of 1024):

HeaderLengthLengthCMDALAMAHD1D2CKLCKH
0x800x060x000x160x000x440x000x000x040x9C0x7D

BSL response where 0x55 is the low byte of the calculated checksum and 0xAA is the high byte of the calculated checksum:

ACKHeaderLengthLengthCMDD1D2CKLCKH
0x000x800x030x000x3A0x550xAA0x120x2B

Example for I2C PI

Perform a CRC check from address 0x4400 to 0x4800 (size of 1024):

I2CHeaderLengthLengthCMDALAMAHD1D2CKLCKH
S/A/W0x800x060x000x160x000x440x000x000x040x9C0x7D

BSL response where 0x55 is the low byte of the calculated checksum and 0xAA is the high byte of the calculated checksum:

I2CACKHeaderLengthLengthCMDD1D2CKLCKHI2C
S/A/R0x000x800x030x000x3A0x550xAA0x120x2BSTOP