MSP432E401Y: Boot from SPI flash

first_name last_name

Part Number: MSP432E401Y

I have an application that I can choose to boot from one of the two images. Because the image is larger than than 512K-bit, both image cannot be stored in the memory flash of the MSP432E401Y,

I plan to store them in a serial flash 2-Mbit, and design a bootloader to upload the image from the serial flash to the internal flash. The bootloader in this case must configure the SPI bus in master mode. It read a block of data from the serial flash and somehow write that block to the internal flash. I wondered if this is possible, and have this been done?

Thanks

over 1 year ago

0 Jim Whitehouse over 1 year ago

Expert 1431 points

Hi,

The supplied examples in C:\ti\simplelink_msp432e4_sdk_4_20_00_12\examples\nortos\MSP_EXP432E401Y\boot_loader\ do some of what you want. There are examples to load an image via I2C and SSI. These examples expect a PC program to be be supplying the image, but it looks like they could get you well on the way to what you need.

The example bootloaders live at address 0x0, and load an application that lives at address 0x4000.

The bootloader loads itself into RAM to run, which can make debugging a bit tricky - see

e2e.ti.com/.../msp432e401y-unable-to-debug-traverse-through-the-bootloader-code.

0 first_name last_name over 1 year ago in reply to Jim Whitehouse

Prodigy 30 points

Hi Jim,

Thank you very much for the suggestions.

Long

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MSP432E401Y: Boot from SPI flash