diff options
Diffstat (limited to 'shared/runtime/mpirq.c')
| -rw-r--r-- | shared/runtime/mpirq.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/shared/runtime/mpirq.c b/shared/runtime/mpirq.c index 0b3489c51..4d848ae7e 100644 --- a/shared/runtime/mpirq.c +++ b/shared/runtime/mpirq.c @@ -69,6 +69,15 @@ int mp_irq_dispatch(mp_obj_t handler, mp_obj_t parent, bool ishard) { int result = 0; if (handler != mp_const_none) { if (ishard) { + #if MICROPY_STACK_CHECK && MICROPY_STACK_SIZE_HARD_IRQ > 0 + // This callback executes in an ISR context so the stack-limit + // check must be changed to use the ISR stack for the duration + // of this function. + char *orig_stack_top = MP_STATE_THREAD(stack_top); + size_t orig_stack_limit = MP_STATE_THREAD(stack_limit); + mp_cstack_init_with_sp_here(MICROPY_STACK_SIZE_HARD_IRQ); + #endif + // When executing code within a handler we must lock the scheduler to // prevent any scheduled callbacks from running, and lock the GC to // prevent any memory allocations. @@ -85,6 +94,12 @@ int mp_irq_dispatch(mp_obj_t handler, mp_obj_t parent, bool ishard) { } gc_unlock(); mp_sched_unlock(); + + #if MICROPY_STACK_CHECK && MICROPY_STACK_SIZE_HARD_IRQ > 0 + // Restore original stack-limit checking values. + MP_STATE_THREAD(stack_top) = orig_stack_top; + MP_STATE_THREAD(stack_limit) = orig_stack_limit; + #endif } else { // Schedule call to user function mp_sched_schedule(handler, parent); |