Add setDigitalRead command handler type and command handler.

main/CommandHandler.cpp

@@ -994,6 +994,19 @@ int setAnalogWrite(const uint8_t command[], uint8_t response[])
   return 6;
 }
 
+int setDigitalRead(const uint8_t command[], uint8_t response[])
+{
+  uint8_t pin = command[4];
+
+  int8_t value = digitalRead(pin);
+
+  response[2] = 1; // number of parameters
+  response[3] = 1; // parameter 1 length
+  response[4] = value;
+
+  return 6;
+}
+
 int wpa2EntSetIdentity(const uint8_t command[], uint8_t response[]) {
   char identity[32 + 1];
 
@@ -1112,7 +1125,7 @@ const CommandHandlerType commandHandlers[] = {
   setClientCert, setCertKey, NULL, NULL, sendDataTcp, getDataBufTcp, insertDataBuf, NULL, NULL, NULL, wpa2EntSetIdentity, wpa2EntSetUsername, wpa2EntSetPassword, wpa2EntSetCACert, wpa2EntSetCertKey, wpa2EntEnable,
 
   // 0x50 -> 0x5f
-  setPinMode, setDigitalWrite, setAnalogWrite,
+  setPinMode, setDigitalWrite, setAnalogWrite, setDigitalRead,
 };
 
 #define NUM_COMMAND_HANDLERS (sizeof(commandHandlers) / sizeof(commandHandlers[0]))