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boards/common/stm32f7: add correct flash bank configuration

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openocd configuration file for `stm32f7` relies on probing to find out
FLASH_ADDR. On nucleo-f767zi board probing (`flash probe 0`) fails when
`srst` is asserted, but `srst` needs to be asserted to be able to flash
the `BOARD` when sleeping or after a hardfault.

To circumvent this in boards/common/stm32/dist/stm32f7.cfg we define a new
flash bank with the appropriate fash start address and specify that this is
the flash bank to be used as default configuration instead of the
default by setting FLASH_BANK=4
This commit is contained in:
Francisco Molina 2020-01-21 17:40:50 +01:00 committed by fjmolinas
parent 53f60db66f
commit 1dec5ba61b
2 changed files with 16 additions and 0 deletions
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6
boards/common/stm32/dist/stm32f7.cfg vendored
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@ -1,3 +1,9 @@
source [find target/stm32f7x.cfg]
# specify flash start address: since target/stm32f7x.cfg doesn't, this
# can be used as backup in case probing fails. When correct address is
# given, the flash size is obtained from hardware so no need to specify.
flash bank $_FLASHNAME.riot stm32f2x 0x08000000 0 0 0 $_TARGETNAME
reset_config srst_only
$_TARGETNAME configure -rtos auto

10
boards/nucleo-f767zi/Makefile.include
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@ -1,2 +1,12 @@
# load the common Makefile.include for Nucleo boards
include $(RIOTBOARD)/common/nucleo144/Makefile.include
# openocd configuration file for `stm32f7` relies on probing to find out
# FLASH_ADDR. On this board probing (`flash probe 0`) fails when `srst` is
# asserted, but `srst` needs to be asserted to be able to flash the `BOARD`
# when sleeping or after a hardfault.
# To circumvent this in boards/common/stm32/dist/stm32f7.cfg we define a new
# flash bank with the appropriate flash start address and specify that this is
# the flash bank to be used as default configuration instead of the default (1)
FLASH_BANK ?= 4
$(call target-export-variables,flash flash-only,FLASH_BANK)