bricks/_common/micropython: Run event loop before raising exception.

This was initially removed in #298, but we are restoring it to be sure that it isn't a breaking change.

Author: laurensvalk

bricks/_common/micropython.c

@@ -40,9 +40,12 @@
 // Implementation for MICROPY_EVENT_POLL_HOOK
 void pb_event_poll_hook(void) {
 
+    while (pbio_os_run_processes_once()) {
+    }
+
     mp_handle_pending(true);
 
-    pbio_os_run_while_idle();
+    pbio_os_run_processes_and_wait_for_event();
 }
 
 // callback for when stop button is pressed in IDE or on hub

bricks/virtualhub/mp_port.c

@@ -89,9 +89,12 @@ void pb_virtualhub_port_deinit(void) {
 // Implementation for MICROPY_EVENT_POLL_HOOK
 void pb_event_poll_hook(void) {
 
+    while (pbio_os_run_processes_once()) {
+    }
+
     mp_handle_pending(true);
 
-    pbio_os_run_while_idle();
+    pbio_os_run_processes_and_wait_for_event();
 }
 
 pbio_os_irq_flags_t pbio_os_hook_disable_irq(void) {

lib/pbio/include/pbio/os.h

@@ -269,7 +269,7 @@ struct _pbio_os_process_t {
 
 bool pbio_os_run_processes_once(void);
 
-void pbio_os_run_while_idle(void);
+void pbio_os_run_processes_and_wait_for_event(void);
 
 void pbio_os_request_poll(void);
 

lib/pbio/src/os.c

@@ -149,7 +149,7 @@ bool pbio_os_run_processes_once(void) {
  * enter a low power mode when possible. It will sleep for at most one
  * millisecond.
  */
-void pbio_os_run_while_idle(void) {
+void pbio_os_run_processes_and_wait_for_event(void) {
 
     // Run the event loop until there is no more pending poll request.
     while (pbio_os_run_processes_once()) {

lib/pbio/sys/main.c

@@ -95,7 +95,7 @@ int main(int argc, char **argv) {
         #endif
 
         // Drives all processes while we wait for user input.
-        pbio_os_run_while_idle();
+        pbio_os_run_processes_and_wait_for_event();
 
         if (!pbsys_main_program_start_requested()) {
             continue;