tres: lower SOM reset timeout (#1945)

* tres: lower SOM reset timeout

* update test

board/drivers/bootkick.h

@@ -29,7 +29,7 @@ void bootkick_tick(bool ignition, bool recent_heartbeat) {
     * once BOOT_RESET is triggered, it stays until countdown is finished
   */
   if (!bootkick_reset_triggered && (boot_state == BOOT_BOOTKICK) && (boot_state_prev == BOOT_STANDBY)) {
-    waiting_to_boot_countdown = 45U;
+    waiting_to_boot_countdown = 20U;
   }
   if (waiting_to_boot_countdown > 0U) {
     bool serial_activity = uart_ring_som_debug.w_ptr_tx != bootkick_last_serial_ptr;

python/__init__.py

@@ -362,6 +362,7 @@ class Panda:
             this_serial = device.getSerialNumber()
           except Exception:
             logging.exception("failed to get serial number of panda")
+            continue
 
           if serial is None or this_serial == serial:
             logging.debug("opening device %s %s", this_serial, hex(device.getProductID()))

tests/som/test_bootkick.py

@@ -145,7 +145,7 @@ def test_recovery_from_qdl(p, pj):
     pj.set_header_pin(i, 0)
 
   # normally, this GPIO is set immediately since it's first enabled in the ABL
-  for i in range(40):
+  for i in range(17):
     assert not p.read_som_gpio()
     time.sleep(1)