I can not use osSemaphoreRelease(rtcMinuteInterruptSemID) in the RTC alarm IRQ

[KiraVerSace]

When I use the stm32duino RTC and open the alarm IRQ, I want to release a semaphore in the IRQ, it always failed, then I debug my code, I find thar it was in the assert as blew.

STM32FreeRTOS/portable/MemMang/heap_useNewlib_ST.c

Line 217 in 382c100

configASSERT( !insideAnISR ); // Make damn sure no more mallocs inside ISRs!!

I check my code that the semaphore create sucessfully!

could you help me?

[ABOSTM]

@KiraVerSace,
According to the comment:
// Make damn sure no more mallocs inside ISRs!!
It seems you are using a FreeRTOS API in your IRQ handler which end up in __malloc_lock()

It is strictly forbidden to use such FreeRTOS API in an IRQ handler
So you need to identify which API you used (Semaphore creation ?) and remove it from IRQ handler.

[KiraVerSace]

I determined that the only api I used in the IRQ handle is osSemaphoreRelease(), and the semaphore was created successfully, I use the CMSIS RTOS api here instead of the FreeRTOS api

[ABOSTM]

osSemaphoreRelease() is not the faulty API, as it manages ISR case.
If you can, print your callstack, that would help to identify which API is called in the IRQ handler.

[KiraVerSace]

Here is my program in the header.h file

#include <STM32RTC.h>
extern STM32RTC &rtc;
extern osSemaphoreId rtcMinuteInterruptSemID;
osSemaphoreDef(rtcMinuteInterruptSem);

Here is the code in the cpp file

/*----------------- RTC ----------------*/
STM32RTC& rtc = STM32RTC::getInstance();
osSemaphoreId rtcMinuteInterruptSemID;

void init(void)
{
	rtcMinuteInterruptSemID = osSemaphoreCreate(osSemaphore(rtcMinuteInterruptSem), 2);
	if (rtcMinuteInterruptSemID == NULL)
	{
		Serial.println("The RTC Semaphore create failed!");
	}
	else
	{
		Serial.printf("The RTC Semaphore create [%d]!\r\n", rtcMinuteInterruptSemID);
	}
}

And here is my IRQ Handle

void rtcMinuteIRQ(void *parameter)
{
	UNUSED(parameter);

	logInfo("RTC Interrput happend!-----------");

	// osSemaphoreRelease(rtcMinuteInterruptSemID);

	static uint8_t lastDay = rtc.getDay();

	uint8_t minutes = rtc.getMinutes();
	minutes = 1 + minutes;
	if(minutes == 60)
	{
		minutes = 0;
	}

	rtc.setAlarmMinutes(minutes);
	rtc.setAlarmSeconds(0);
	rtc.enableAlarm(rtc.MATCH_MMSS);

	if(rtc.getDay() != lastDay)
	{
		lastDay = rtc.getDay();
	}

	logInfo("RTC Alarm at[%04d-%02d-%02d %02d:%02d], next Interrupt Minutes at [%02d]",
				(rtc.getYear()+2000), rtc.getMonth(), rtc.getDay(),
				rtc.getHours(), rtc.getMinutes(), minutes);
}

if I commment this line osSemaphoreRelease(rtcMinuteInterruptSemID); the system runs well ,

if I uncomment this line, the system will print I(51935483) rtcMinuteIRQ: RTC Interrput happend!-----------
and enter into the assert in heap_useNewlib_ST.c

[KiraVerSace]

OK, I debug my code step by step

First run to osSemaphoreRelease(rtcMinuteInterruptSemID);

then I step in, and run to in queue.c portASSERT_IF_INTERRUPT_PRIORITY_INVALID();

and run to port.c configASSERT( ucCurrentPriority >= ucMaxSysCallPriority );

and into a loop that is STM32FreeRTOS/portable/MemMang/heap_useNewlib_ST.c

[KiraVerSace]

I have slove the problem, cause of the #define RTC_IRQ_PRIO is set to 2, it is not in the freeRTOS control priority, so I set it to 7, between 5 and 15