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NRF82840DK External Flash Hangs #15

@kegilbert

Description

@kegilbert

Ran with pins:

   "NRF52840_DK": {
      "SPI_MOSI": "p20",
      "SPI_MISO": "p21",
      "SPI_CLK":  "p19",
      "SPI_CS":   "p17"
  }

Source: http://infocenter.nordicsemi.com/index.jsp?topic=%2Fcom.nordic.infocenter.nrf52%2Fdita%2Fnrf52%2Fdevelopment%2Fnrf52840_pdk%2Fexternal_memory.html

Additionally tried with SPI0 from the pinnames.h file:

 SPI_PSELMOSI0 = P1_13, 
 SPI_PSELMISO0 = P1_14, 
 SPI_PSELSS0   = P1_12, 
 SPI_PSELSCK0  = P1_15, 

___________________________________________________________________________-
With the first set of defined pins from the product documentation I get the the following output followed by the hang:

--- Mbed OS filesystem example ---
Mounting the filesystem... Fail :(
No filesystem found, formatting...

@geky
@SenRamakri

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