MSPM0C1104: How to use flash_bsl demo as secondary bootloader

Gryphon Shi

Part Number: MSPM0C1104

Hi,

I am currently using flash_bsl as my secondary bootloader and skyfire as my application.

My Skyfire application configures the MCU as an I2C slave to communicate with a master(host). The host system runs Buildroot.

Now I can use the flash_bsl to flash skyfire.bin to mcu,but my application seems to work wrong.The host can use i2cdetect to detect the MCU's address, but the MCU's I2C peripheral hangs as soon as the host attempts actual communication.

1 month ago

0 Gryphon Shi 1 month ago

Prodigy 81 points

Hi,

I add the following section in main.c of my application.Now my application can run normally,but I am not sure if there are any potential risk.

0 Gryphon Shi 1 month ago in reply to Gryphon Shi

Prodigy 81 points

Or Is there an elegant solution?The ide i use is CCS20.50.

0 Pengfei Xie 1 month ago in reply to Gryphon Shi

TI__Genius 12845 points

Hi Gryphon,

The VTOR is the offset address of interrupt vector table. If the application program is not start with 0x0000 address, you need to set VTOR register as the start address of your application program interrupt vector table, otherwise the interrupt handler function entry could not be found by application.

0 Gryphon Shi 1 month ago in reply to Pengfei Xie

Prodigy 81 points

Hi Pengfei,

Yes， I have recognized it and I am looking for an elegant way to save the VTOR.Do you have any advice?

+1 Pengfei Xie 1 month ago in reply to Gryphon Shi

TI__Genius 12845 points

Hi Gryphon,

Generally we will set VTOR just before the program jumping occurs, or at the first sentence in Reset_Hander(). But it is also fine that you place it in the first sentence of main() program. The key point is to make sure VTOR is set before the first interrupt triggered in application.

0 Gryphon Shi 1 month ago in reply to Pengfei Xie

Prodigy 81 points

Hi Pengfei,

Thanks for your suggestiton,I will take it.

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MSPM0C1104: How to use flash_bsl demo as secondary bootloader