Cortex M3/M4 with bootloader ROM

David Brown · 2013-10-04T16:03:40+00:00

Does anyone have recommendations for Cortex M3/M4 microcontrollers with a bootloader in ROM? We use a number of Freescale Kinetis devices, but there is no ROM bootloader - programming is through either JTAG or the EZ-Port (basically treating the chip like an SPI flash device). We have an application where a UART-based bootloader would be very useful, and having it in ROM would save a lot of effort and production time (like the TI msp430 microcontrollers). There are vast numbers of M3/M4 devices available - I am looking for recommendations for ones with a simple and clear bootloader protocol. Thanks, David

Oct 04, 2013 83 Replies

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Ulf Samuelsson 12 years ago

I think you find that the Atmel Cortex part can be programmed using the USB device port using SAM-BA.

BR Ulf Samuelsson

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Anssi Saari 12 years ago

I guess I have to agree with that. Android development stuff from Google and Steam from Valve is just installable the same way as anything else.

Maybe you would like Sabayon instead in the binary-distribution land? Gentoo based but software is prebuilt. Can still use emerge for stuff that isn't.

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Christopher Head 12 years ago

STM32F4 series also bootloads over CAN, as well as USB and serial. And yes, you can both jump into the bootloader yourself from application code as well as setting a level on a pin while powering up to get into the bootloader unconditionally.

Christopher Head

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Christopher Head 12 years ago

If you run Linux (or it may be buildable in Windows as well; I haven?t ever tried), recent versions of dfu-util support the STM32F4 series? USB bootloader.

Christopher Head

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