Unable to connect (bond) to nrf52810 using nrfConnect

[mredp]

Hi, I have been developing on the nRF52832. I am now in the process of moving to the nRF52810.

I am using the SDK v15. 

I have commented out the DEVELOP_IN_NRF52832 define in the pca10040e Makefile.

It seems to be working OK. I can see the device on the nrf connect app. However, when I click connect, it is unable to connect.

 

If I comment back in DEVELOP_IN_NRF52832 and switch back to the nRF52832, everything works perfectly.

I have made my own custom service. But I don't think that should matter. Any ideas?

[Vidar Berg]

Hi,

When you developed your application on the 52832, did you use the s132 or s112 softdevice? Also, can you provide a list of the defines you have in your Makefile? Reason I ask is that I wonder if the application might be using APIs not available in s112.

  

[mredp]

I used the s132 soft device originally, however, when I flash the nrf52832 with the s112 soft device it works fine aswell. 

Is this the part of the Makefile that your after?

# Libraries common to all targets
LIB_FILES += \

# Optimization flags
OPT = -Os -g3
# Uncomment the line below to enable link time optimization
#OPT += -flto

# C flags common to all targets
CFLAGS += $(OPT)
CFLAGS += -DBOARD_PCA10040
CFLAGS += -DCONFIG_GPIO_AS_PINRESET
# CFLAGS += -DDEVELOP_IN_NRF52832
CFLAGS += -DFLOAT_ABI_SOFT
CFLAGS += -DNRF52810_XXAA
CFLAGS += -DNRF52_PAN_74
CFLAGS += -DNRF_SD_BLE_API_VERSION=6
CFLAGS += -DS112
CFLAGS += -DSOFTDEVICE_PRESENT
CFLAGS += -DSWI_DISABLE0
CFLAGS += -mcpu=cortex-m4
CFLAGS += -mthumb -mabi=aapcs
CFLAGS += -Wall -Werror
CFLAGS += -mfloat-abi=soft
# keep every function in a separate section, this allows linker to discard unused ones
CFLAGS += -ffunction-sections -fdata-sections -fno-strict-aliasing
CFLAGS += -fno-builtin -fshort-enums

# C++ flags common to all targets
CXXFLAGS += $(OPT)

# Assembler flags common to all targets
ASMFLAGS += -g3
ASMFLAGS += -mcpu=cortex-m4
ASMFLAGS += -mthumb -mabi=aapcs
ASMFLAGS += -mfloat-abi=soft
ASMFLAGS += -DBOARD_PCA10040
ASMFLAGS += -DCONFIG_GPIO_AS_PINRESET
# ASMFLAGS += -DDEVELOP_IN_NRF52832
ASMFLAGS += -DFLOAT_ABI_SOFT
ASMFLAGS += -DNRF52810_XXAA
ASMFLAGS += -DNRF52_PAN_74
ASMFLAGS += -DNRF_SD_BLE_API_VERSION=6
ASMFLAGS += -DS112
ASMFLAGS += -DSOFTDEVICE_PRESENT
ASMFLAGS += -DSWI_DISABLE0

# Linker flags
LDFLAGS += $(OPT)
LDFLAGS += -mthumb -mabi=aapcs -L$(SDK_ROOT)/modules/nrfx/mdk -T$(LINKER_SCRIPT)
LDFLAGS += -mcpu=cortex-m4
# let linker dump unused sections
LDFLAGS += -Wl,--gc-sections
# use newlib in nano version
LDFLAGS += --specs=nano.specs

nrf52810_xxaa: CFLAGS += -D__HEAP_SIZE=2048
nrf52810_xxaa: CFLAGS += -D__STACK_SIZE=2048
nrf52810_xxaa: ASMFLAGS += -D__HEAP_SIZE=2048
nrf52810_xxaa: ASMFLAGS += -D__STACK_SIZE=2048

# Add standard libraries at the very end of the linker input, after all objects
# that may need symbols provided by these libraries.
LIB_FILES += -lc -lnosys -lm


.PHONY: default help

# Default target - first one defined
default: nrf52810_xxaa

[Vidar Berg]

Looks like you are using the correct flags at least. Just to confirm, the exact same application .hex (without DEVELOP_IN_NRF52832) and s112 runs fine on the 52832)? Could you search through your project to see if DEVELOP_IN_NRF52832 is being used other places in your code (not just system_nrf52810.c)?

[mredp]

Yes, DEVELOP_IN_NRF52832  is only being used in system_nrf52810.c

If It helps, I am have code that is using the saadc.

To be clear, the nrf52810 can advertise correctly. But It hangs when trying to connect. See the picture below.

I am currently developing from the ble_peripheral/bls_app_hts example.

[Vidar Berg]

I tried the ble_peripheral/bls_app_hts from SDK 15.0.0 on 52810 without DEVELOP_IN_NRF52832, and did not experience the connection problem. Maybe this could be HW related. Are you using an external crystal for the low frequency clock? In that case, could you try to use the internal RC oscillator? Inaccurate frequency may explain why the phone fails to connect.  

Here is the .hex file I used for test (LEDs and Buttons disabled and RSOSC enabled):

nrf52810_hts_w_softdevice.hex