Added reset upon setup, made reset more robust

firmware/noise_sampling/noise_sampling.ino

@@ -40,10 +40,9 @@
 
 
 void reset_comm(){
+  uint8_t buf[8] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF};
   SPI.beginTransaction(SPISettings(SPIRATE, MSBFIRST, SPI_MODE3));
-  for(unsigned i = 0; i < 8; ++i){
-    SPI.transfer(0xFF);
-  }
+  SPI.transfer(buf, 8);
   SPI.endTransaction();
 }
 
@@ -134,6 +133,8 @@ void setup() {
   delay(1000);
 
   digitalWrite(nCS, LOW);
+  reset_comm();
+  delay(500);
   setup_adc();
   digitalWrite(nCS, HIGH);
 }