MPU9255 + nrf52 (PCA10040)

RE: MPU9255 + nrf52 (PCA10040)

Joakim Jakobsen — Mon, 29 Jan 2018 12:04:35 GMT

Hi Andres.
I tried importing the project to SES by following the tutorial, but I don't get any errors, and the example is working as expected.
Are you sure you did all the steps explained in the tutorial?
Best regards.

RE: MPU9255 + nrf52 (PCA10040)

Joakim Jakobsen — Wed, 24 Jan 2018 08:47:55 GMT

Hi again.
Hard to say what might be the issue with limited information. I'll try to import the project to SES myself, to see if I get the same errors that you do. I'll get back to you.
Best regards.

RE: MPU9255 + nrf52 (PCA10040)

Andres Zubillaga — Fri, 19 Jan 2018 16:37:59 GMT

Hi Joakim,

I changed the settings to your suggestion and there has been an improvement. Now the program compiles to the point where a print statement in the main function gets triggered.

However,in the disasembly window the app error handler is outputted 4 times for the following functions:

ble_advertising_start(), mpu_setup() and uart_config()

However, when I try to look at the call stack for the app_error_handler I cannot see the errors even though I toggled a breakpoint in error_info_t error_info in void app_error_handler in the app_error.c file. I tried to follow the debugging video by Nordic in Youtube but I do net get an error output in the call stack.

RE: MPU9255 + nrf52 (PCA10040)

Joakim Jakobsen — Fri, 19 Jan 2018 07:50:53 GMT

Try changing the settings to:

FLASH_START = 0x1C000  
SRAM_START = 0x20002080

Let me know if that doesn't help, and we will find another solution.
Best regards.

RE: MPU9255 + nrf52 (PCA10040)

Andres Zubillaga — Thu, 18 Jan 2018 15:39:48 GMT

Hi Joakim,

My current settings are: FLASH_START=0x1F000 SRAM_START=0x20002000

Those were the settings the tutorial suggested. I am taking a look at the video-tutorials. I'll post an update if i have any success with them.

RE: MPU9255 + nrf52 (PCA10040)

Joakim Jakobsen — Thu, 18 Jan 2018 14:06:12 GMT

Hi Andres.
This might be caused by wrong memory settings. Which values are you using for FLASH_START and RAM_START?
We also have a youtube-tutorial about how to debug in SEGGER Embedded Studio, you can take a look at that here.
Best regards.