On 01/04/2014 07:18 PM, Gilles Chanteperdrix wrote:
On 01/04/2014 10:06 AM, Philippe Gerum wrote:
On 01/04/2014 01:48 AM, Nima Nourozi wrote:
I'm writing an SPI device driver using rtdm skin. If I call rtdm_task_init
from anywhere in the code the system freezes indefinitely with no errors
thrown.
Here is how I call the function in __init function of my module:
retval = rtdm_task_init(&heartbeat_task, "spi_transfer", xx_start_transfer,
NULL, 99, 100000000);
I'm using xenomai 2.6.1 patched with
adeos-ipipe-2.6.38.8-arm-1.18-09.patch<http://download.gna.org/adeos/patches/v2.6/arm/adeos-ipipe-2.6.38.8-arm-1.18-09.patch>
Linux 2.6.38.8 and my compiler is Sourcery G++ Lite 2010q1-202
The rtdm_timer_start function works perfectly so the problem is only with
the task function.
I've been trying different kernel versions but I get the same result.
I'm attaching the .config file in case there is a setting that's causing
this issue.
Check your own code in xx_start_transfer. It is likely running away,
locking up the system. Enabling CONFIG_XENO_OPT_WATCHDOG may help.
If it is periodic, chances are the period is too short.
The period is set to 100 ms, should be ok. Provided rtdm_wait_period()
is properly called from that task, that is.
--
Philippe.
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