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fix(boards): BDN9 rev2 tweaks.
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* Reduce RAM usage, no need for heap any more in ZMK.
* Don't attempt to enable FPU that's not present.
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petejohanson committed Jul 15, 2024
1 parent 9efc40f commit 505fc48
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Showing 2 changed files with 4 additions and 7 deletions.
3 changes: 3 additions & 0 deletions app/boards/arm/bdn9/bdn9_rev2.dts
Original file line number Diff line number Diff line change
Expand Up @@ -109,6 +109,9 @@ zephyr_udc0: &usb {
status = "okay";
pinctrl-0 = <&usb_dm_pa11 &usb_dp_pa12>;
pinctrl-names = "default";

// Overridden to lower RAM usage.
num-bidir-endpoints = <4>;
};

&rtc {
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8 changes: 1 addition & 7 deletions app/boards/arm/bdn9/bdn9_rev2_defconfig
Original file line number Diff line number Diff line change
Expand Up @@ -5,9 +5,6 @@ CONFIG_SOC_STM32F072XB=y
# 72MHz system clock
CONFIG_SYS_CLOCK_HW_CYCLES_PER_SEC=72000000

# Floating Point Options
CONFIG_FPU=y

# enable GPIO
CONFIG_GPIO=y

Expand All @@ -17,10 +14,7 @@ CONFIG_PINCTRL=y
# Poll to avoid interrupt overlap issues
CONFIG_ZMK_KSCAN_DIRECT_POLLING=y

# Needed to reduce this to size that will fit on F072
CONFIG_HEAP_MEM_POOL_SIZE=1024

# clock configuration
CONFIG_CLOCK_CONTROL=y

CONFIG_ZMK_USB=y
CONFIG_ZMK_USB=y

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