K53 BSP Check that the source of the FLL

[ing_albertopc]

Hello

i was using a TWR-K53N512 to develop an application, now i made a custon PCB with the MK53DN512CMD10 and i try to loading a simple code and i found that it got stuck on the next line at the bsp_cm.c

while((MCG_S & MCG_S_IREFST_MASK) != 0x00U) { /* Check that the source of the FLL reference clock is the external reference clock. */

  }

what should i do?

[ing_albertopc]

Thank you for your answer Soledad was really helpfull.

Regards

Alberto Peña

[soledad · Accepted solution]

Hello Alberto,

This issue is caused if the custom board has a different clock configuration. The TWR-K53N512 features a 50 MHz on-board clock oscillator as seen in sheet 3 of the schematics.

If you have a different configuration, you need to change the BSP. Attached, you can find a document that explains how to change the default clock configurations.

Have a great day,
Sol

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