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  • MSP430™ FRAM Devices Bootloader (BSL)

    • 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

       

  • CONTENTS
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  • MSP430™ FRAM Devices Bootloader (BSL)
  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
  11. IMPORTANT NOTICE
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USER'S GUIDE

MSP430™ FRAM Devices Bootloader (BSL)

1 Abstract

The bootloader (BSL) on MSP430™ microcontrollers (MCUs) lets users communicate with embedded memory in the MSP430 MCU during the prototyping phase, final production, and in service. Both the programmable memory (FRAM memory) and the data memory (RAM) can be modified as required.

Do not confuse the bootloader with programs found in some digital signal processors (DSPs) that automatically load program code (and data) from external memory to the internal memory of the DSP. These programs are often referred to as bootloaders as well.

Trademarks

MSP430™ is a trademark of Texas Instruments.

All trademarks are the property of their respective owners.

1 Introduction

The MSP430 BSL lets users communicate with embedded memory in the MSP430 microcontroller (MCU) during the prototyping phase, final production, and in service. Both the programmable memory (FRAM memory) and the data memory (RAM) can be modified as required. Do not confuse the bootloader with programs found in some digital signal processors (DSPs) that automatically load program code (and data) from external memory to the internal memory of the DSP. These programs are often referred to as bootloaders as well.

To start the bootloader, a specific BSL entry sequence must be applied to dedicated pins. The BSL can also be called by application code that sets the PC pointer to the BSL start address in Z-area. On FR26xx, FR24xx, and FR23xx MCUs, an empty reset vector (for example, as on a unprogrammed device) also invokes the BSL. After the BSL has started, a sequence of commands can be sent to the BSL to execute the desired functions (for example, unlocking the device, programming or reprogramming the memory, or verifying the written data). The bootloader session can be exited by continuing operation at a defined user program address or by the reset condition.

Even if the device is secured by disabling JTAG, it is still possible to use the BSL. To avoid accidental overwriting of the BSL code, the code is stored in a secure ROM memory location. To prevent unwanted memory readout, any BSL command that directly or indirectly allows data reading or writing is password protected. Using this method, access to the device memory through the BSL is protected against misuse by the BSL password. The BSL password is equal to the content of the interrupt vector table on the device. For more information about password-protected commands, see Section 4.2.

1.1 BSL Limitations

Compared to the BSL on MSP flash-based devices, the BSL on MSP FRAM-based devices bootloader is programmed in the read-only memory (ROM). See MSP430FRBoot – Main Memory Bootloader and Over-the-Air Updates for MSP430 FRAM for information on how to customize a bootloader in FR5xx and FR6xx devices. UART and I2C communication protocols are available. For FR4xx, FR21xx, and FR20xx devices, only UART is available at a rate of 9600 baud.

1.2 Other Useful Documentation

Data sheets

The device-specific data sheets include information on the pins used for BSL communication and the supported protocols. To find the data sheet for each device, visit the MSP430 ultra-low-power MCUs products page.

Family user's guides

MSP430FR58xx, MSP430FR59xx, and MSP430FR6xx Family User's Guide

MSP430FR57xx Family User's Guide

MSP430FR4xx and MSP430FR2xx Family User's Guide

Tools

MSP BSL tool folder

Training videos

MSP BSL overview

MSP BSL options

MSP crypto bootloader training series

 
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