QUERY · ISSUE

STM32: Not able to build mboot without USB and user switch

openby marc-baopened 2020-01-18updated 2020-01-20

port-stm32

I'm trying to do a board without a USB or switch, using the STM32F411. I want to use MBOOT to update the FW only when it is called from within an application so have no need for a USB or switch. It will use an external SPI flash chip. I've got this working on the basic pyboard.

I've declared the below - yet MBOOT gives multiple errors when calling sudo make BOARD=NAME__ USE_MBOOT=1 clean all

#define MICROPY_HW_HAS_SWITCH (0)
#define MICROPY_HW_ENABLE_USB (0)
#define MICROPY_HW_USB_FS (0)

Is there a way to use MBOOT without a USB or switch?

CANDIDATE · PULL REQUEST

ports/stm32/mboot - Set USE_MBOOT=1 by default

closedby dhylandsopened 2019-03-15updated 2019-03-18

This allows boards that need USE_MBOOT to be built
properly whether USE_MBOOT=1 is specified when building mboot.

Assessment

S Sonnet · high

Both items touch ports/stm32/mboot/Makefile, but they address different problems. Issue #5548 is about build failures when MICROPY_HW_HAS_SWITCH=0 and MICROPY_HW_ENABLE_USB=0 are set — the mboot source doesn't guard against these configurations. PR #4608 fixes a separate problem: ensuring USE_MBOOT=1 is set by default so TEXT0_ADDR is configured correctly for boards that optionally use mboot. The PR does not add any conditional compilation guards for USB or switch, so it does not resolve the query's build failures.

Suggested action

Leave issue #5548 open. PR #4608 provides useful context (shared Makefile area) but does not fix the missing #ifdef guards for MICROPY_HW_HAS_SWITCH and MICROPY_HW_ENABLE_USB in mboot. The real fix requires updating mboot/main.c (and related sources) to conditionally compile switch and USB code.

STM32: Not able to build mboot without USB and user switch

ports/stm32/mboot - Set USE_MBOOT=1 by default

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