fix(boards): BDN9 rev2 tweaks.

* Reduce RAM usage, no need for heap any more in ZMK. * Don't attempt to enable FPU that's not present.
petejohanson · Aug 10, 2024 · 548e244 · 548e244
1 parent 4f0a078
commit 548e244
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Showing 2 changed files with 5 additions and 6 deletions.
diff --git a/app/boards/arm/bdn9/bdn9_rev2.dts b/app/boards/arm/bdn9/bdn9_rev2.dts
@@ -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 {

diff --git a/app/boards/arm/bdn9/bdn9_rev2_defconfig b/app/boards/arm/bdn9/bdn9_rev2_defconfig
@@ -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
 
@@ -17,10 +14,9 @@ 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
+CONFIG_ISR_STACK_SIZE=1024
 
 # clock configuration
 CONFIG_CLOCK_CONTROL=y
 
-CONFIG_ZMK_USB=y
+CONFIG_ZMK_USB=y