On 01/06/2014 10:54 PM, Gilles Chanteperdrix wrote: > On 01/06/2014 10:52 PM, Nima Nourozi wrote: >> On Mon, Jan 6, 2014 at 1:45 PM, Gilles Chanteperdrix < >> gilles.chanteperd...@xenomai.org> wrote: >> >>> On 01/06/2014 08:10 PM, Nima Nourozi wrote: >>>> Here is the task initialization code: >>>> >>>> *rtdm_printk("kicking of tasklet...\n");* >>>> * retval = rtdm_task_init(&heartbeat_task, "spi_transfer", >>>> xx_start_transfer, NULL, 99, 100000000 /* 100 ms */);* >>>> * __ipipe_serial_debug("*******return value = %d\n", retval);* >>>> * if(retval)* >>>> * {* >>>> * __ipipe_serial_debug("error initializing task: %i\n", retval);* >>>> * }* >>>> >>>> Here is the task function: >>>> >>>> void xx_start_transfer(void *arg) >>>> { >>>> >>>> int ret; >>>> >>>> while (1) { >>>> ret = rtdm_task_wait_period(); >>>> __ipipe_serial_debug("*******return value = %d\n", ret); >>>> gpio_set_value(LED, 1); >>>> rtdm_task_sleep(0); >>>> } >>>> } >>> >>> I can not reproduce your problem, it works fine here. Could you post the >>> full code of a simplified driver which triggers the problem ? >>> >>> >>> -- >>> Gilles. >>> >> >> Sure, please find it attached. It's just the standard atmel_spi.c with >> task_init command added in atmel_spi_probe() function. >> > Whatever happened to "simplified"? Please try to reduce your code to the > minimum code which triggers the bug. By doing so, you may even find the > problem yourself. > For instance, following your bug report, I wrote the following module:
#include <rtdm/rtdm_driver.h> static rtdm_task_t t; void xx_start_transfer(void *arg) { rtdm_task_wait_period(); rtdm_printk("!!!!!!!!!!!tick!\n"); } int init(void) { rtdm_task_init(&t, "spi_transfer", xx_start_transfer, NULL, 99, 100000000); return 0; } module_init(init); MODULE_LICENSE("GPL"); Which works here. As I said, you can confirm whether rtdm_task_init works for your configuration by launching latency -t 1 -p 100000 -- Gilles. _______________________________________________ Xenomai mailing list Xenomai@xenomai.org http://www.xenomai.org/mailman/listinfo/xenomai