fixed masterchip bug that broke usb-readout

firmware/masterchip/main.c

@@ -17,7 +17,7 @@
 #include "main.h"
 
 uint8_t newThermoData = 1;
-uint16_t thermoData[];
+uint16_t thermoData[4];
 
 
 void hardinit() {
@@ -79,6 +79,7 @@ int __attribute__((noreturn)) main(void) {
 		uint16_t recv;
 		for(int i=0; i<4; i++) {
 			thermoData[i] = spi_master_transceive(7, i, 0);
+            usbPoll();
 		}
 		newThermoData = 1;
     }