Adapting NRF52832 example to custom board with NRF52810

[cory123]

My custom board with NRF52810 is done and I'm now trying to get some examples working. I am adapting blinky_s132 in SES. To do this I edited the project options including disabling the FPU, defining BOARD_CUSTOM, chaning the device definition to NRF52810_XXAA, and some other changes. I've attached the SES project file. I also opened this project file in a text editor and changed  ...

arm_target_device_name="nRF52810_xxAA"

I also created a custom_board.h which I have attached. The program compiles correctly and programs fine but when debugging it seems to get stuck in a trap. I don't think SES has registered that I'm using 52810 instead of 52832 as can be seem by the flash and ram usage. Can you help me resolve this?

By the way, I can't seem to upload more than one file for some reason.

[cory123]

[cory123]

I think I have resolved this issue. Instead of adapting the PCA10040 project, I'm adapting PCA10040e which is set up for NFR52810 emulation. Can you tell me, is there any options I need to change from the "emulated NRF52810" to the real NRF52810? Much appreciated!

[cory123]

Great. This is exactly what I needed.

[cory123]

You might add in the "Transfering emulated project" section something about changing BOARD_PCA10040 to BOARD_CUSTOM.

[cory123]

I'm still having problems with my NRF52810 board. I can run non-softdevice examples fine. Here are the steps I'm taking to get the ble_app_gatts_c_pca10040e project working in SES.

1. open this project in SES.

2. Change project options for "common" config.. Preproccesor macros set to

APP_TIMER_V2

APP_TIMER_V2_RTC1_ENABLED

BOARD_CUSTOM

CONFIG_GPIO_AS_PINRESET

FLOAT_ABI_SOFT

INITIALIZE_USER_SECTIONS

NO_VTOR_CONFIG

NRF52810_XXAA

NRF52_PAN_74

NRF_SD_BLE_API_VERSION=7

S112

SOFTDEVICE_PRESENT

3. created custom_board.c by copying board_pca10040.c and removing defines that do not apply.

4. Comment out contents of buttons_leds_init() function in main.c because I have no buttons on my board.

5. Open nrfGo Studio, program s112 softdevice followed by the new project hex file. I've tried both the "Debug" and "release" without success. If I attache the debugger, reset and then pause the program, I always end up at the same instruction:

4770        bx lr

I've attached a screen cap of that program location I get trapped in. Can you see any mistake I'm making?

[Amanda Hsieh]

Hi, 

cory123 said:

I can run non-softdevice examples fine.

 Do you use the same setting in Setp.2 & 3? 

Please start a terminal emulator like PuTTY and connect to the used COM port with the following UART settings and provide the log:

• Baud rate: 115.200
• 8 data bits
• 1 stop bit
• No parity
• HW flow control: None

-Amanda H.

[cory123]

I am using the same custom_board.h in both projects. Here is the preprocessor macros from my blinky project:

BOARD_CUSTOM
BSP_DEFINES_ONLY
CONFIG_GPIO_AS_PINRESET
FLOAT_ABI_SOFT
INITIALIZE_USER_SECTIONS
NO_VTOR_CONFIG
NRF52810_XXAA
NRF52_PAN_74

And is the preprocessor macros for the BLE GATTS example:

APP_TIMER_V2

APP_TIMER_V2_RTC1_ENABLED

BOARD_CUSTOM

CONFIG_GPIO_AS_PINRESET

FLOAT_ABI_SOFT

INITIALIZE_USER_SECTIONS

NO_VTOR_CONFIG

NRF52810_XXAA

NRF52_PAN_74

NRF_SD_BLE_API_VERSION=7

S112

SOFTDEVICE_PRESENT

The only differences I see are...

APP_TIMER_V2

APP_TIMER_V2_RTC1_ENABLED

BSP_DEFINES_ONLY

NRF_SD_BLE_API_VERSION=7

S112

SOFTDEVICE_PRESENT

I don't have a serial port on my NRF52810 board. Do you mean an emulated serial port over the debugger or a physical serial port?

[Amanda Hsieh]

Hi, 

Could you enable the RTT log in the sdk_config.h as follwing and provide it?

//==========================================================
// <e> NRF_LOG_BACKEND_RTT_ENABLED - nrf_log_backend_rtt - Log RTT backend
//==========================================================
#ifndef NRF_LOG_BACKEND_RTT_ENABLED
#define NRF_LOG_BACKEND_RTT_ENABLED 1
#endif

It will show in the Segger. 

-Amanda H.

[cory123]

I enabled RTT as suggested and also disabled deferred logging with...

NRF_LOG_DEFERRED=0

I can now see RTT output from this I added in main.c .....

NRF_LOG_WARNING("hello you\n");

I am getting no RTT output from the SoftDevice or any other RTT output at all. When the SVCALL(SD_SOFTDEVICE_ENABLE ...) is called the program runs until it gets trapped (see screencap). Am I programming the SoftDevice incorrectly? I'm can't seem to figure this one out!

[cory123]

I have found that I am not using a low frequency XTAL and so I need to set ...

NRF_SDH_CLOCK_LF_SRC 0

After changing that in sdk_config.h my program drops into app_error_fault_handler(). Am I setting the LF clock correctly when I set NRF_SDH_CLOCK_LF_SRC  to 0? I'm not using any LF hardware clock outside of the NRF52810. You thoughts?

[Amanda Hsieh]

Hi, 

See the Clock source page for information about the SoftDevice clock source. If you don't have LF crystal, you will need to use the RC Oscillator. Please see this post to set the sdk_config.h and let me know it help or not.  

-Amanda H.

[cory123]

I'm seeing 3 section in sdk_config.h which configure the LF clock...

// <h> Clock - SoftDevice clock configuration

// <e> NRF_CLOCK_ENABLED - nrf_drv_clock - CLOCK peripheral driver - legacy layer

// <e> NRFX_CLOCK_ENABLED - nrfx_clock - CLOCK peripheral driver

Do I need to enable the RC LF in all of those sections?