Port, board and/or hardware

nRF52840 Dongle

MicroPython version

micropython 1.27.0 or master: build is zephyr on Ubuntu 24.04.

Reproduction

I am trying to bring up the zephyr port on the nRF52840 dongle (which is supported by Zephyr: the similar nRF52840DK is supported by both zephyr and micropython's zephyr port). If I build micropython with default kernel config as per the instructions (west build -p always -b nrf52840dongle micropython/ports/zephyr, with no ports/zephyr/boards/nrf52840dongle.conf present) then the build is fine and completes, and works when flashed to the device. However, when I turn bluetooth on (by creating ports/zephyr/boards/nrf52840dongle.conf with CONFIG_BT=y in it) and build again with the same command, the build fails, with a bunch of compilation errors to do with missing symbols and the like, as listed below

Expected behaviour

No response

Observed behaviour

end section of the build log (project name shortened to <myproject> just to keep the line lengths down!)

[466/476] Building C object CMakeFiles/micropython.dir/modbluetooth_zephyr.c.obj
FAILED: CMakeFiles/micropython.dir/modbluetooth_zephyr.c.obj 
ccache <myproject>/zephyrproject/zephyr/zephyr-sdk-latest/arm-zephyr-eabi/bin/arm-zephyr-eabi-gcc -DFFCONF_H=\"<myproject>/micropython/ports/zephyr/../../lib/oofatfs/ffconf.h\" -DKERNEL -DK_HEAP_MEM_POOL_SIZE=0 -DMICROPY_BOARD_BUILD_NAME=\"ZEPHYR_NRF52840DONGLE\" -DMICROPY_HEAP_SIZE=49152 -DMICROPY_VFS_FAT=1 -DMICROPY_VFS_LFS1=0 -DMICROPY_VFS_LFS2=1 -DMP_CONFIGFILE="<mpconfigport.h>" -DNDEBUG -DNRF52840_XXAA -DNRF54L_CONFIGURATION_56_ENABLE=0 -DPICOLIBC_DOUBLE_PRINTF_SCANF -D_POSIX_THREAD_SAFE_FUNCTIONS=200809L -D__LINUX_ERRNO_EXTENSIONS__ -D__PROGRAM_START -D__ZEPHYR__=1 -I<myproject>/micropython/ports/zephyr/../.. -I<myproject>/micropython/ports/zephyr -I<myproject>/zephyrproject/zephyr/build -I<myproject>/zephyrproject/zephyr/include -I<myproject>/zephyrproject/zephyr/build/zephyr/include/generated -I<myproject>/zephyrproject/zephyr/soc/nordic -I<myproject>/zephyrproject/zephyr/lib/libc/picolibc/include -I<myproject>/zephyrproject/zephyr/lib/posix/c_lib_ext/getopt -I<myproject>/zephyrproject/zephyr/soc/nordic/nrf52/. -I<myproject>/zephyrproject/zephyr/soc/nordic/common/. -I<myproject>/zephyrproject/zephyr/subsys/bluetooth/controller/ll_sw/nordic/hal/nrf5/nrfx_glue -I<myproject>/zephyrproject/zephyr/subsys/bluetooth -I<myproject>/zephyrproject/zephyr/drivers/usb/common/nrf_usbd_common/. -I<myproject>/zephyrproject/modules/hal/cmsis_6/CMSIS/Core/Include -I<myproject>/zephyrproject/zephyr/modules/cmsis_6/. -I<myproject>/zephyrproject/modules/hal/nordic/nrfx -I<myproject>/zephyrproject/modules/hal/nordic/nrfx/drivers/include -I<myproject>/zephyrproject/modules/hal/nordic/nrfx/bsp/stable -I<myproject>/zephyrproject/modules/hal/nordic/nrfx/bsp/stable/templates -I<myproject>/zephyrproject/zephyr/modules/hal_nordic/nrfx/. -isystem <myproject>/zephyrproject/zephyr/lib/libc/common/include -fno-strict-aliasing -Os -imacros <myproject>/zephyrproject/zephyr/build/zephyr/include/generated/zephyr/autoconf.h -fno-common -g -gdwarf-4 -fdiagnostics-color=always -mcpu=cortex-m4 -mthumb -mabi=aapcs -mfpu=fpv4-sp-d16 -mfloat-abi=hard -mfp16-format=ieee -mtp=soft --sysroot=<myproject>/zephyrproject/zephyr/zephyr-sdk-latest/arm-zephyr-eabi/arm-zephyr-eabi -imacros <myproject>/zephyrproject/zephyr/include/zephyr/toolchain/zephyr_stdint.h -Wall -Wformat -Wformat-security -Wno-format-zero-length -Wdouble-promotion -Wno-pointer-sign -Wpointer-arith -Wexpansion-to-defined -Wno-unused-but-set-variable -Werror=implicit-int -fno-pic -fno-pie -fno-asynchronous-unwind-tables -ftls-model=local-exec -fno-reorder-functions --param=min-pagesize=0 -fno-defer-pop -fmacro-prefix-map=<myproject>/micropython/ports/zephyr=CMAKE_SOURCE_DIR -fmacro-prefix-map=<myproject>/zephyrproject/zephyr=ZEPHYR_BASE -fmacro-prefix-map=<myproject>/zephyrproject=WEST_TOPDIR -ffunction-sections -fdata-sections -specs=picolibc.specs -std=c17 -std=gnu99 -fomit-frame-pointer -MD -MT CMakeFiles/micropython.dir/modbluetooth_zephyr.c.obj -MF CMakeFiles/micropython.dir/modbluetooth_zephyr.c.obj.d -o CMakeFiles/micropython.dir/modbluetooth_zephyr.c.obj -c <myproject>/micropython/ports/zephyr/modbluetooth_zephyr.c
<myproject>/micropython/ports/zephyr/modbluetooth_zephyr.c: In function 'mp_bluetooth_gap_set_device_name':
<myproject>/micropython/ports/zephyr/modbluetooth_zephyr.c:367:18: error: 'CONFIG_BT_DEVICE_NAME_MAX' undeclared (first use in this function); did you mean 'CONFIG_BT_DEVICE_NAME'?
  367 |     char tmp_buf[CONFIG_BT_DEVICE_NAME_MAX + 1];
      |                  ^~~~~~~~~~~~~~~~~~~~~~~~~
      |                  CONFIG_BT_DEVICE_NAME
<myproject>/micropython/ports/zephyr/modbluetooth_zephyr.c:367:18: note: each undeclared identifier is reported only once for each function it appears in
<myproject>/micropython/ports/zephyr/modbluetooth_zephyr.c:367:10: warning: unused variable 'tmp_buf' [-Wunused-variable]
  367 |     char tmp_buf[CONFIG_BT_DEVICE_NAME_MAX + 1];
      |          ^~~~~~~
<myproject>/micropython/ports/zephyr/modbluetooth_zephyr.c: In function 'mp_bluetooth_gap_advertise_start':
<myproject>/micropython/ports/zephyr/modbluetooth_zephyr.c:412:35: error: 'BT_LE_ADV_OPT_CONNECTABLE' undeclared (first use in this function); did you mean 'BT_LE_ADV_OPT_SCANNABLE'?
  412 |         .options = (connectable ? BT_LE_ADV_OPT_CONNECTABLE : 0)
      |                                   ^~~~~~~~~~~~~~~~~~~~~~~~~
      |                                   BT_LE_ADV_OPT_SCANNABLE
<myproject>/micropython/ports/zephyr/modbluetooth_zephyr.c:413:15: error: 'BT_LE_ADV_OPT_ONE_TIME' undeclared (first use in this function); did you mean 'BT_LE_ADV_OPT_NO_2M'?
  413 |             | BT_LE_ADV_OPT_ONE_TIME
      |               ^~~~~~~~~~~~~~~~~~~~~~
      |               BT_LE_ADV_OPT_NO_2M
<myproject>/micropython/ports/zephyr/modbluetooth_zephyr.c: In function 'mp_bluetooth_gap_set_device_name':
<myproject>/micropython/ports/zephyr/modbluetooth_zephyr.c:374:1: warning: control reaches end of non-void function [-Wreturn-type]
  374 | }
      | ^
<myproject>/micropython/ports/zephyr/modbluetooth_zephyr.c: At top level:
<myproject>/micropython/ports/zephyr/modbluetooth_zephyr.c:979:13: warning: 'add_descriptor' defined but not used [-Wunused-function]
  979 | static void add_descriptor(struct bt_gatt_attr *chrc, struct add_descriptor *d, struct bt_gatt_attr *attr_desc) {
      |             ^~~~~~~~~~~~~~
<myproject>/micropython/ports/zephyr/modbluetooth_zephyr.c:921:13: warning: 'add_characteristic' defined but not used [-Wunused-function]
  921 | static void add_characteristic(struct add_characteristic *ch, struct bt_gatt_attr *attr_chrc, struct bt_gatt_attr *attr_value) {
      |             ^~~~~~~~~~~~~~~~~~
<myproject>/micropython/ports/zephyr/modbluetooth_zephyr.c:907:13: warning: 'add_service' defined but not used [-Wunused-function]
  907 | static void add_service(const struct bt_uuid *u, struct bt_gatt_attr *attr) {
      |             ^~~~~~~~~~~
<myproject>/micropython/ports/zephyr/modbluetooth_zephyr.c:869:24: warning: 'create_zephyr_uuid' defined but not used [-Wunused-function]
  869 | static struct bt_uuid *create_zephyr_uuid(const mp_obj_bluetooth_uuid_t *uuid) {
      |                        ^~~~~~~~~~~~~~~~~~
[468/476] Building C object CMakeFiles/micropy...ini_zephyr/micropython/lib/littlefs/lfs2.c.obj
<myproject>/micropython/lib/littlefs/lfs2.c:508:13: warning: 'lfs2_mlist_isopen' defined but not used [-Wunused-function]
  508 | static bool lfs2_mlist_isopen(struct lfs2_mlist *head,
      |             ^~~~~~~~~~~~~~~~~
ninja: build stopped: subcommand failed.
FATAL ERROR: command exited with status 1: /usr/bin/cmake --build <myproject>/zephyrproject/zephyr/build

Additional Information

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Code of Conduct

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