samples: Bluetooth: Reduce heap for hci_ipc

Thalley · henrikbrixandersen · commit 322b177549b6 · 2024-11-25T21:52:15.000+01:00
Reducing the heap requirement for the hci_ipc sample from
8KiB to 4KiB. It has been tested in various configurations to
work with 2300, but 4KiB was used to provide some leeway for
future updates.

The heap requirement is not documented, and it is unclear why
values lower than 2300 (not exact number) won't boot, and should
be investigated further.

Memory has become a very scarce resource for especially the ISO
builds for the nRF5340, which is why this is getting reduced.

Signed-off-by: Emil Gydesen &lt;emil.gydesen@nordicsemi.no&gt;
diff --git a/samples/bluetooth/hci_ipc/nrf5340_cpunet_bis-bt_ll_sw_split.conf b/samples/bluetooth/hci_ipc/nrf5340_cpunet_bis-bt_ll_sw_split.conf
@@ -5,7 +5,7 @@ CONFIG_ISR_STACK_SIZE=1024
 CONFIG_IDLE_STACK_SIZE=256
 CONFIG_MAIN_STACK_SIZE=512
 CONFIG_SYSTEM_WORKQUEUE_STACK_SIZE=512
-CONFIG_HEAP_MEM_POOL_SIZE=6144
+CONFIG_HEAP_MEM_POOL_SIZE=4096
 
 CONFIG_BT=y
 CONFIG_BT_HCI_RAW=y
diff --git a/samples/bluetooth/hci_ipc/nrf5340_cpunet_bt_mesh-bt_ll_sw_split.conf b/samples/bluetooth/hci_ipc/nrf5340_cpunet_bt_mesh-bt_ll_sw_split.conf
@@ -1,7 +1,7 @@
 CONFIG_IPC_SERVICE=y
 CONFIG_MBOX=y
 
-CONFIG_HEAP_MEM_POOL_SIZE=6144
+CONFIG_HEAP_MEM_POOL_SIZE=4096
 
 CONFIG_MAIN_STACK_SIZE=512
 CONFIG_SYSTEM_WORKQUEUE_STACK_SIZE=512
diff --git a/samples/bluetooth/hci_ipc/nrf5340_cpunet_cis-bt_ll_sw_split.conf b/samples/bluetooth/hci_ipc/nrf5340_cpunet_cis-bt_ll_sw_split.conf
@@ -5,7 +5,7 @@ CONFIG_ISR_STACK_SIZE=1024
 CONFIG_IDLE_STACK_SIZE=256
 CONFIG_MAIN_STACK_SIZE=512
 CONFIG_SYSTEM_WORKQUEUE_STACK_SIZE=512
-CONFIG_HEAP_MEM_POOL_SIZE=6144
+CONFIG_HEAP_MEM_POOL_SIZE=4096
 
 CONFIG_BT=y
 CONFIG_BT_HCI_RAW=y
diff --git a/samples/bluetooth/hci_ipc/nrf5340_cpunet_df-bt_ll_sw_split.conf b/samples/bluetooth/hci_ipc/nrf5340_cpunet_df-bt_ll_sw_split.conf
@@ -5,7 +5,7 @@ CONFIG_ISR_STACK_SIZE=1024
 CONFIG_IDLE_STACK_SIZE=256
 CONFIG_MAIN_STACK_SIZE=512
 CONFIG_SYSTEM_WORKQUEUE_STACK_SIZE=512
-CONFIG_HEAP_MEM_POOL_SIZE=6144
+CONFIG_HEAP_MEM_POOL_SIZE=4096
 
 CONFIG_BT=y
 CONFIG_BT_HCI_RAW=y
diff --git a/samples/bluetooth/hci_ipc/nrf5340_cpunet_iso-bt_ll_sw_split.conf b/samples/bluetooth/hci_ipc/nrf5340_cpunet_iso-bt_ll_sw_split.conf
@@ -5,7 +5,7 @@ CONFIG_ISR_STACK_SIZE=1024
 CONFIG_IDLE_STACK_SIZE=256
 CONFIG_MAIN_STACK_SIZE=512
 CONFIG_SYSTEM_WORKQUEUE_STACK_SIZE=512
-CONFIG_HEAP_MEM_POOL_SIZE=6144
+CONFIG_HEAP_MEM_POOL_SIZE=4096
 CONFIG_CBPRINTF_REDUCED_INTEGRAL=y
 
 CONFIG_ISR_TABLES_LOCAL_DECLARATION=y
diff --git a/samples/bluetooth/hci_ipc/nrf5340_cpunet_iso_broadcast-bt_ll_sw_split.conf b/samples/bluetooth/hci_ipc/nrf5340_cpunet_iso_broadcast-bt_ll_sw_split.conf
@@ -5,7 +5,7 @@ CONFIG_ISR_STACK_SIZE=1024
 CONFIG_IDLE_STACK_SIZE=256
 CONFIG_MAIN_STACK_SIZE=512
 CONFIG_SYSTEM_WORKQUEUE_STACK_SIZE=512
-CONFIG_HEAP_MEM_POOL_SIZE=6144
+CONFIG_HEAP_MEM_POOL_SIZE=4096
 
 CONFIG_BT=y
 CONFIG_BT_HCI_RAW=y
diff --git a/samples/bluetooth/hci_ipc/nrf5340_cpunet_iso_central-bt_ll_sw_split.conf b/samples/bluetooth/hci_ipc/nrf5340_cpunet_iso_central-bt_ll_sw_split.conf
@@ -5,7 +5,7 @@ CONFIG_ISR_STACK_SIZE=1024
 CONFIG_IDLE_STACK_SIZE=256
 CONFIG_MAIN_STACK_SIZE=512
 CONFIG_SYSTEM_WORKQUEUE_STACK_SIZE=512
-CONFIG_HEAP_MEM_POOL_SIZE=6144
+CONFIG_HEAP_MEM_POOL_SIZE=4096
 
 CONFIG_BT=y
 CONFIG_BT_HCI_RAW=y
diff --git a/samples/bluetooth/hci_ipc/nrf5340_cpunet_iso_peripheral-bt_ll_sw_split.conf b/samples/bluetooth/hci_ipc/nrf5340_cpunet_iso_peripheral-bt_ll_sw_split.conf
@@ -5,7 +5,7 @@ CONFIG_ISR_STACK_SIZE=1024
 CONFIG_IDLE_STACK_SIZE=256
 CONFIG_MAIN_STACK_SIZE=512
 CONFIG_SYSTEM_WORKQUEUE_STACK_SIZE=512
-CONFIG_HEAP_MEM_POOL_SIZE=6144
+CONFIG_HEAP_MEM_POOL_SIZE=4096
 
 CONFIG_BT=y
 CONFIG_BT_HCI_RAW=y
diff --git a/samples/bluetooth/hci_ipc/nrf5340_cpunet_iso_receive-bt_ll_sw_split.conf b/samples/bluetooth/hci_ipc/nrf5340_cpunet_iso_receive-bt_ll_sw_split.conf
@@ -5,7 +5,7 @@ CONFIG_ISR_STACK_SIZE=1024
 CONFIG_IDLE_STACK_SIZE=256
 CONFIG_MAIN_STACK_SIZE=512
 CONFIG_SYSTEM_WORKQUEUE_STACK_SIZE=512
-CONFIG_HEAP_MEM_POOL_SIZE=6144
+CONFIG_HEAP_MEM_POOL_SIZE=4096
 
 CONFIG_BT=y
 CONFIG_BT_HCI_RAW=y
diff --git a/samples/bluetooth/hci_ipc/prj.conf b/samples/bluetooth/hci_ipc/prj.conf
@@ -1,7 +1,7 @@
 CONFIG_IPC_SERVICE=y
 CONFIG_MBOX=y
 
-CONFIG_HEAP_MEM_POOL_SIZE=8192
+CONFIG_HEAP_MEM_POOL_SIZE=4096
 
 CONFIG_MAIN_STACK_SIZE=512
 CONFIG_SYSTEM_WORKQUEUE_STACK_SIZE=512
diff --git a/tests/bluetooth/tester/nrf5340_hci_ipc_cpunet.conf b/tests/bluetooth/tester/nrf5340_hci_ipc_cpunet.conf
@@ -1,8 +1,5 @@
 # Apply this overlay at hci_ipc controller build
 
-# Changes towards reduced RAM usage, in order to fit the tweaks
-CONFIG_HEAP_MEM_POOL_SIZE=7168
-
 # PTS required counts
 CONFIG_BT_MAX_CONN=3
 
diff --git a/tests/bsim/bluetooth/ll/cis/sysbuild/hci_ipc/nrf5340_cpunet_iso_acl_group-bt_ll_sw_split.conf b/tests/bsim/bluetooth/ll/cis/sysbuild/hci_ipc/nrf5340_cpunet_iso_acl_group-bt_ll_sw_split.conf
@@ -6,7 +6,7 @@ CONFIG_IDLE_STACK_SIZE=256
 CONFIG_MAIN_STACK_SIZE=512
 CONFIG_SYSTEM_WORKQUEUE_STACK_SIZE=512
 CONFIG_IPC_SERVICE_BACKEND_RPMSG_WQ_STACK_SIZE=512
-CONFIG_HEAP_MEM_POOL_SIZE=8192
+CONFIG_HEAP_MEM_POOL_SIZE=4096
 CONFIG_CBPRINTF_REDUCED_INTEGRAL=y
 
 CONFIG_BT=y
