pbio/sys/main: Set shutdown status in the right place.

Shutdown begins when the drivers are being deinitialized.

This also ensures that the shutdown animation completes when the system (including the HMI) is done.

Author: laurensvalk

lib/pbio/sys/main.c

@@ -139,15 +139,12 @@ int main(int argc, char **argv) {
     // Stop system processes and selected drivers in reverse order. This will
     // also save user data to flash,
     pbsys_deinit();
+    pbsys_status_set(PBIO_PYBRICKS_STATUS_SHUTDOWN);
 
     // Now lower-level processes may shutdown and/or power off.
     pbio_deinit();
     pbdrv_deinit();
 
-    // REVISIT: We should use the deinit hooks above to gracefully request exit
-    // instead of having the drivers rely on system statuses.
-    pbsys_status_set(PBIO_PYBRICKS_STATUS_SHUTDOWN);
-
     // The power could be held on due to someone pressing the center button
     // so we have this loop to keep handling events to drive processes that
     // turn off some of the peripherals.