boardd: more logging (#28051)

selfdrive/boardd/panda.cc

@@ -13,9 +13,11 @@ Panda::Panda(std::string serial, uint32_t bus_offset) : bus_offset(bus_offset) {
   // try USB first, then SPI
   try {
     handle = std::make_unique<PandaUsbHandle>(serial);
+    LOGW("conntected to %s over USB", serial.c_str());
   } catch (std::exception &e) {
 #ifndef __APPLE__
     handle = std::make_unique<PandaSpiHandle>(serial);
+    LOGW("conntected to %s over SPI", serial.c_str());
 #endif
   }
 

selfdrive/boardd/pandad.py

@@ -76,10 +76,13 @@ def panda_sort_cmp(a: Panda, b: Panda):
 
 
 def main() -> NoReturn:
+  count = 0
   first_run = True
   params = Params()
 
   while True:
+    count += 1
+    cloudlog.event("pandad.flash_and_connect", count=count)
     try:
       params.remove("PandaSignatures")