regarding the board with and without the flash chipset for nrf52840 board

[liuluan1984]

Hi Nordic, 

I am using your official board nrf52840 to develop my application based on the ble_app_uart_peripheral example. BLE communication and the spi interfaced sensor parts works fine with the official development board PCA10056 downloading with segger studio. but when I move the application to another board without the external flash chipset, it fail for running with the interruption from the sensor side. Any ideas for it? 

reference code 

[Jared]

Hi,

I can't see that you're actually using the external flash anywhere in your code. Could you point me towards where? 

How exactly is the application failing? 

Have you mapped the pins correctly? Could you share the custom board file that you're using for your custom board?

regards

Jared 

[liuluan1984]

Here is board I am using, the pin connection should be the same, it is the MDBT50Q-1MV2 module board.

Here is the reference   https://www.raytac.com/download/index.php?index_id=43 

[Jared]

Hi,

Could you elaborate a bit more on how it fails? Have you tried debugging the application and checked exactly where it fails? T̶h̶e̶ ̶l̶i̶n̶k̶ ̶t̶h̶a̶t̶ ̶y̶o̶u̶ ̶s̶h̶a̶r̶e̶d̶ ̶i̶s̶ ̶j̶u̶s̶t̶ ̶f̶o̶r̶ ̶t̶h̶e̶ ̶m̶o̶d̶u̶l̶e̶,̶ ̶I̶ ̶c̶o̶u̶l̶d̶ ̶n̶e̶e̶d̶ ̶m̶o̶r̶e̶ ̶i̶n̶f̶o̶r̶m̶a̶t̶i̶o̶n̶ ̶r̶e̶g̶a̶r̶d̶i̶n̶g̶ ̶t̶h̶e̶ ̶P̶C̶B̶ ̶d̶e̶s̶i̶g̶n̶,̶ ̶s̶c̶h̶e̶m̶a̶t̶i̶c̶ ̶w̶o̶u̶l̶d̶ ̶b̶e̶ ̶e̶n̶o̶u̶g̶h̶.̶ The module doesn't have an internal low frequency crystal. Which means that you have to either provide it externally or change the Low frequency clock source. Have you done either?

And the code you shared doesn't specify which pins that you use for the SPI as the definitions isn't included in the attached code. 

regards

Jared