SNR is now a float, fix the screen display

docs/software/nrf52-TODO.md

@@ -62,6 +62,7 @@ Needed to be fully functional at least at the same level of the ESP32 boards. At
 
 Nice ideas worth considering someday...
 
+- make/find a multithread safe debug logging class (include remote logging and timestamps and levels). make each log event atomic.
 - turn on freertos stack size checking
 - Currently we use Nordic's vendor ID, which is apparently okay: https://devzone.nordicsemi.com/f/nordic-q-a/44014/using-nordic-vid-and-pid-for-nrf52840 and I just picked a PID of 0x4403
 - Use NRF logger module (includes flash logging etc...) instead of DEBUG_MSG

src/mesh/RadioInterface.cpp

@@ -7,6 +7,7 @@
 #include <pb_decode.h>
 #include <pb_encode.h>
 
+// 1kb was too small
 #define RADIO_STACK_SIZE 4096
 
 RadioInterface::RadioInterface() : txQueue(MAX_TX_QUEUE)

src/screen.cpp

@@ -315,7 +315,7 @@ static void drawNodeInfo(OLEDDisplay *display, OLEDDisplayUiState *state, int16_
     const char *username = node->has_user ? node->user.long_name : "Unknown Name";
 
     static char signalStr[20];
-    snprintf(signalStr, sizeof(signalStr), "Signal: %ld", node->snr);
+    snprintf(signalStr, sizeof(signalStr), "Signal: %.0f", node->snr);
 
     uint32_t agoSecs = sinceLastSeen(node);
     static char lastStr[20];