Posted on December 04, 2014 at 14:54
Hello,
I've modified FatFs_uSD_RTOS example to write in a loop (32k files), which works fine on its own (Task SDCardStream()).
When I add another task Process() which only has a calculation loop:
static
void
ThreadProcessing(
void
const
*argument)
{
portTickType NextProcess, tmp;
for
( ;; )
{
tmp = xTaskGetTickCount();
if
((tmp % 100 == 0) && (tmp != NextProcess))
{
NextProcess = tmp;
for
(
int
i = 0; i < 13186; i++)
{
res +=
sqrt
((i*i) / 37);
}
}
vTaskDelay(1);
}
}
SDCardStream() will fail with the errorFR_DISK_ERR.
The only way to resolve that error is by wrapping all of FatFs functions with a critical question, e.g.:
taskENTER_CRITICAL();
f_mkdir(&filename[0]);
taskEXIT_CRITICAL();
Did anyone experience that?
Do you have any idea what can cause this?
Any lead would be appreciated :)
#freertos #fatfs #stm3240g
