worked on SPI, fixed some bugs

adjusted LCD code
added code for INA3221
worked on UI

ext/rf/SX1276.h

@@ -380,9 +380,11 @@ private:
 
 	/** check the chip's version */
 	void check() {
+		idle();
 		uint8_t version = readRegister(REG_VERSION);
 		debugMod1(NAME, "version %d", version);
 		if (version != 0x12) {debugMod(NAME, "!! unsupported chip version detected");}
+		sleep();
 	}
 	
 	/** what exactly is this? */