SAMD21 External clock stuck in initialization

Log in or register to post comments
Go To Last Post
3 posts / 0 new
Author
Message
bayrem.dev
bayrem.dev's picture
Level: New Member
Joined: Wed. Feb 19, 2020
Posts: 4 View posts
#1
Posted by bayrem.dev: Wed. Feb 19, 2020 - 10:50 AM
  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 0

I'm using a custom board based on samd21j18a mcu, the board embeds an external oscillator and it is working fine when using asf3, whereas it fails to initialize clock when using asf4.

It gets stuck in this while loop in hpl_sysctrl.c file.

 

#if CONF_XOSC_CONFIG == 1
#if CONF_XOSC_ENABLE == 1
    while (!hri_sysctrl_get_PCLKSR_XOSCRDY_bit(hw))
        ;
#endif

 

Here is my clock config in START:

ATMEL START CLOCK CONFIG SCREENSHOT

 

I searched everywhere onilne for the problem but can't seem to find a solution.

Cheers.

This topic has a solution.

wubalubadubdub

Tags:

Tools, Atmel Software Framework (ASF) and Atmel Start (ASFv4) (ARM-related), solved
Last Edited: Thu. Feb 20, 2020 - 01:38 PM
Top
Lajon
Lajon's picture
Level: Raving Lunatic
Joined: Fri. Mar 12, 2004
Posts: 2606 View posts
Location: Linköping, Sweden
Posted by Lajon: Wed. Feb 19, 2020 - 03:55 PM
  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 0

Not enough of the config is shown above, maybe you have this problem:

https://community.atmel.com/forum/xplained-pro-samd21-external-crystal

/Lars

 

Top
bayrem.dev
bayrem.dev's picture
Level: New Member
Joined: Wed. Feb 19, 2020
Posts: 4 View posts
This reply has been marked as the solution. 
Posted by bayrem.dev: Thu. Feb 20, 2020 - 10:25 AM (Reply to #2)
  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 0

Thanks for replying.

I solved the problem by setting the following configs:

in hpl_sysctrl_config.h:

#define CONF_XOSC32K_ONDEMAND 0
#define CONF_XOSC32K_XTALEN 1
#define CONF_XOSC_ONDEMAND 0
#define CONF_XOSC_XTALEN 1

and this only works if I set nvm wait state to 1 (by default 0) in hpl_pm_config.h:

#define CONF_NVM_WAIT_STATE 1

I attached my config folder below if it can help someone in the future.

Attachment(s): 

File config.rar

wubalubadubdub

Last Edited: Thu. Feb 20, 2020 - 10:28 AM
Top