SysTick ISR not firing Topic is solved

[yusuf.husainy]

Hello All,

Following is my setup:
ChibiOS 18.2.0: os-less
Board: Nucleo144-STM32L496ZG
SYSCLOCK: 80MHz, HSE is enabled, 16MHz Crystal.

Osal tick frequency:
#define OSAL_ST_FREQUENCY 1000

On creating an os-less project, I am unable to get SysTick interrupts. I checked the core peripheral registers value after bootup and halInit() they seem to be correct for 1msec tick.

Attached is the dmp file

Kind request if someone can help to look in the correct direction to reolve why SysTick ISR is not getting fired. The breakpoint never hits. virtual timers created do not get updated.

Thanks

[Giovanni]

Hi,

Make sure to enable interrupts after halInit().

Giovanni

[yusuf.husainy]

Thank you, that worked for me.

chSysInit() is the case when RT is built, calls chSysEnable() which will then enable interrupts globally.

For os-less, since chSysInit() is out of the picture, osalSysEnable() was needed to be called after halInit() which enables the global interrupts.