Posted on February 07, 2018 at 14:57
Hi Tilen,
I know the MCU is still in stop because I turn on a led as soon as it exits from stop mode (but the led remain off).
I managed to exit from stop mode with global interrupt disabled, starting from a blank project
__disable_irq ();
HAL_PWR_EnterSTOPMode (PWR_MAINREGULATOR_ON, PWR_SLEEPENTRY_WFI);
ledPowerOn ();
__enable_irq ();�?�?�?�?�?�?�?�?
ledPowerOn is executed before the interrupt handler that woke up the MCU (this is correct, and this is what I want).
I think the problem is that in my project, I'm using FreeRTOS, and instead of __disable_irq ()
__attribute__( ( always_inline ) ) __STATIC_INLINE void __disable_irq(void)
{
__ASM volatile ('cpsid i' : : : 'memory');
}�?�?�?�?
I'm using the FreeRTOS macro vPortEnterCritical ()
#define configPRIO_BITS 4
#define configLIBRARY_MAX_SYSCALL_INTERRUPT_PRIORITY 5
/* Interrupt priorities used by the kernel port layer itself. These are generic
to all Cortex-M ports, and do not rely on any particular library functions. */
#define configKERNEL_INTERRUPT_PRIORITY \
( configLIBRARY_LOWEST_INTERRUPT_PRIORITY << (8 - configPRIO_BITS) )
/* !!!! configMAX_SYSCALL_INTERRUPT_PRIORITY must not be set to zero !!!!
See https://community.st.com/external-link.jspa?url=http%3A%2F%2Fwww.FreeRTOS.org%2FRTOS-Cortex-M3-M4.html. */
#define configMAX_SYSCALL_INTERRUPT_PRIORITY \
( configLIBRARY_MAX_SYSCALL_INTERRUPT_PRIORITY << (8 - configPRIO_BITS) )
#define portDISABLE_INTERRUPTS() vPortRaiseBASEPRI()
portFORCE_INLINE static void vPortRaiseBASEPRI( void )
{
uint32_t ulNewBASEPRI;
__asm volatile
(
' mov %0, %1
' \
' msr basepri, %0
' \
' isb
' \
' dsb
' \
:'=r' (ulNewBASEPRI) : 'i' ( configMAX_SYSCALL_INTERRUPT_PRIORITY )
);
}
void vPortEnterCritical( void )
{
portDISABLE_INTERRUPTS();
uxCriticalNesting++;
/* This is not the interrupt safe version of the enter critical function so
assert() if it is being called from an interrupt context. Only API
functions that end in 'FromISR' can be used in an interrupt. Only assert if
the critical nesting count is 1 to protect against recursive calls if the
assert function also uses a critical section. */
if( uxCriticalNesting == 1 )
{
configASSERT( ( portNVIC_INT_CTRL_REG & portVECTACTIVE_MASK ) == 0 );
}
}�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?
I think it's something in basepri setting that is preventing interrupt to trigger and to exit from stop mode.
