但是比如事件组，在rt-thread里是一个统一接口无需判断是否在中断，FreeRTOS里是区分普通代码和中断代码调用不同的API。
所以问题是，我怎么判断当前代码是否在中断中执行？
Code: Untitled.c Select all
rt_err_t IRAM_ATTR rt_event_send(rt_event_t event, rt_uint32_t set)
{
if (vPortGetIPSR())
{
BaseType_t xHigherPriorityTaskWoken;
BaseType_t xResult;
xHigherPriorityTaskWoken = pdFALSE;
xResult = xEventGroupSetBitsFromISR(event->xHandler, set, &xHigherPriorityTaskWoken);
if (xResult != pdFAIL)
{
/* If xHigherPriorityTaskWoken is now set to pdTRUE then a context
switch should be requested. The macro used is port specific and will
be either portYIELD_FROM_ISR() or portEND_SWITCHING_ISR() - refer to
the documentation page for the port being used. */
portYIELD_FROM_ISR(xHigherPriorityTaskWoken);
}
}
else
{
xEventGroupSetBits(event->xHandler, set);
}
return RT_EOK;
}