zephyr: Allow pins to support both hard and soft interrupts.

Signed-off-by: Daniel Campora <[email protected]>

Author: Daniel Campora

ports/zephyr/machine_pin.c

@@ -63,22 +63,26 @@ void machine_pin_deinit(void) {
 static void gpio_callback_handler(const struct device *port, struct gpio_callback *cb, gpio_port_pins_t pins) {
     machine_pin_irq_obj_t *irq = CONTAINER_OF(cb, machine_pin_irq_obj_t, callback);
 
-    #if MICROPY_STACK_CHECK
-    // 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 (so that hard IRQ callbacks work).
-    char *orig_stack_top = MP_STATE_THREAD(stack_top);
-    size_t orig_stack_limit = MP_STATE_THREAD(stack_limit);
-    MP_STATE_THREAD(stack_top) = (void *)&irq;
-    MP_STATE_THREAD(stack_limit) = CONFIG_ISR_STACK_SIZE - 512;
-    #endif
-
-    mp_irq_handler(&irq->base);
-
-    #if MICROPY_STACK_CHECK
-    // Restore original stack-limit checking values.
-    MP_STATE_THREAD(stack_top) = orig_stack_top;
-    MP_STATE_THREAD(stack_limit) = orig_stack_limit;
-    #endif
+    if (irq->base.ishard) {
+        #if MICROPY_STACK_CHECK
+        // 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 (so that hard IRQ callbacks work).
+        char *orig_stack_top = MP_STATE_THREAD(stack_top);
+        size_t orig_stack_limit = MP_STATE_THREAD(stack_limit);
+        MP_STATE_THREAD(stack_top) = (void *)&irq;
+        MP_STATE_THREAD(stack_limit) = CONFIG_ISR_STACK_SIZE - 512;
+        #endif
+
+        mp_irq_handler(&irq->base);
+
+        #if MICROPY_STACK_CHECK
+        // Restore original stack-limit checking values.
+        MP_STATE_THREAD(stack_top) = orig_stack_top;
+        MP_STATE_THREAD(stack_limit) = orig_stack_limit;
+        #endif
+    } else {
+        mp_sched_schedule(irq->base.handler, irq->base.parent);
+    }
 }
 
 static void machine_pin_print(const mp_print_t *print, mp_obj_t self_in, mp_print_kind_t kind) {