Nested OC_LOCK_OD causing permanently disabled interrupts.

[somlioy]

Hi

After the update in CanopenNode where OD is always locked on a SDO call (Always call OD lock macros on SDO operations), my code broke down; the interrupts isnt enabled again.

This change caused nested OC_LOCK_OD to happen and since there is only one variable for storing the primask in the CO_CANmodule_t struct, the interrupts will never be enabled again.

The result was that the code stopped working on a HAL_Delay (infinite while loop) in anothert part of the application since OC_LOCK/__disable_irq apparantly also disable systicks.

I noticed this during a eeprom save (0x1010) because I had OC_LOCK_OD/UNLOCK on the OD-entry to be saved in the "storeEeprom"-function.

Is there any better way to implement this? Ie. not disabling global interrupts, only the timer in charge of the interrupts and some other way of storing primask?