Improve CDC Logging support

cores/esp32/HardwareSerial.cpp

@@ -132,7 +132,7 @@ void HardwareSerial::setDebugOutput(bool en)
         uartSetDebug(_uart);
     } else {
         if(uartGetDebug() == _uart_nr) {
-            uartSetDebug(0);
+            uartSetDebug(NULL);
         }
     }
 }

cores/esp32/USBCDC.cpp

@@ -315,6 +315,7 @@ uint32_t  USBCDC::baudRate()
 void USBCDC::setDebugOutput(bool en)
 {
     if(en) {
+        uartSetDebug(NULL);
         ets_install_putc1((void (*)(char)) &cdc0_write_char);
     } else {
         ets_install_putc1(NULL);

cores/esp32/esp32-hal-log.h

@@ -75,7 +75,7 @@ const char * pathToFileName(const char * path);
 int log_printf(const char *fmt, ...);
 
 #define ARDUHAL_SHORT_LOG_FORMAT(letter, format)  ARDUHAL_LOG_COLOR_ ## letter format ARDUHAL_LOG_RESET_COLOR "\r\n"
-#define ARDUHAL_LOG_FORMAT(letter, format)  ARDUHAL_LOG_COLOR_ ## letter "[" #letter "][%s:%u] %s(): " format ARDUHAL_LOG_RESET_COLOR "\r\n", pathToFileName(__FILE__), __LINE__, __FUNCTION__
+#define ARDUHAL_LOG_FORMAT(letter, format)  ARDUHAL_LOG_COLOR_ ## letter "[%6u][" #letter "][%s:%u] %s(): " format ARDUHAL_LOG_RESET_COLOR "\r\n", (unsigned long) (esp_timer_get_time() / 1000ULL), pathToFileName(__FILE__), __LINE__, __FUNCTION__
 
 #if ARDUHAL_LOG_LEVEL >= ARDUHAL_LOG_LEVEL_VERBOSE
 #define log_v(format, ...) log_printf(ARDUHAL_LOG_FORMAT(V, format), ##__VA_ARGS__)