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Example Summary

GPIO port interrupt with an internal pull-up resistor. Uses an input pin or UART/I2C command to invoke Flash BSL.

More information please refer to MSPM0 Bootloader (BSL) Implementation or MSPM0 Bootloader user’s guide

Note: Example requires Rev E3 or later of the MSPM0C1104 LaunchPad.

Peripherals & Pin Assignments

Peripheral Pin Function
GPIOA PA16 Standard Input with internal pull-up
SYSCTL
UART0 PA26 RX Pin
UART0 PA27 TX Pin
EVENT
DEBUGSS PA20 Debug Clock
DEBUGSS PA19 Debug Data In Out

BoosterPacks, Board Resources & Jumper Settings

Visit LP_MSPM0C1104 for LaunchPad information, including user guide and hardware files.

Pin Peripheral Function LaunchPad Pin LaunchPad Settings
PA16 GPIOA PA16 J2_19
  • PA16 is connected to S2 button to GND with no external pull resistor
    • Press S2 button to connect pin to GND
    • Don’t use S2 button if not needed by application
PA26 UART0 RX N/A
  • PA26 can be used as UART RX connected to boosterpack connector and this pin also connect with XDS110. Need to remove the jumper in J101 when not use XDS110 UART backchannel.
PA27 UART0 TX N/A
  • PA27 can be used as UART TX connected to boosterpack connector
PA20 DEBUGSS SWCLK J2_11
  • PA20 is used by SWD during debugging
    • J101 13:14 ON Connect to XDS-110 SWCLK while debugging
    • J101 13:14 OFF Disconnect from XDS-110 SWCLK if using pin in application
PA19 DEBUGSS SWDIO J2_17
  • PA19 is used by SWD during debugging
    • J101 11:12 ON Connect to XDS-110 SWDIO while debugging
    • J101 11:12 OFF Disconnect from XDS-110 SWDIO if using pin in application

Device Migration Recommendations

This project was developed for a superset device included in the LP_MSPM0C1104 LaunchPad. Please visit the CCS User’s Guide for information about migrating to other MSPM0 devices.

Low-Power Recommendations

TI recommends to terminate unused pins by setting the corresponding functions to GPIO and configure the pins to output low or input with internal pullup/pulldown resistor.

SysConfig allows developers to easily configure unused pins by selecting Board→Configure Unused Pins.

For more information about jumper configuration to achieve low-power using the MSPM0 LaunchPad, please visit the LP-MSPM0C1104 User’s Guide.

Example Usage

Compile, load and run the example on device with Flash BSL(refer example: flash_bsl). Generate .txt format image file and use BSL_GUI_EXE tool convert it to .h file and copy it into BSL host project.