diff -r c5e5bdc5ef49 -r 162fe523c37d src/main.cpp
--- a/src/main.cpp	Tue Oct 11 21:49:43 2016 +0200
+++ b/src/main.cpp	Wed Oct 26 22:41:16 2016 +0200
@@ -12,8 +12,7 @@
 #include "SSD1322.h"
 #include "hp34comm.h"
 
-
-#if (defined STM32F303x8) || (defined STM32L432xx)
+#if (defined STM32L432xx)
 // display
 #define DSP_MOSI PA_7 //A6
 #define DSP_MISO PA_6 //A5 
@@ -26,6 +25,19 @@
 // misc
 #define DBGPIN PA_12
 
+#elif (defined STM32F303x8)
+// display
+#define DSP_MOSI PA_7 //A6
+#define DSP_MISO PA_6 //A5 
+#define DSP_SCLK PA_5 //A4
+#define DSP_CS   PA_4
+#define DSP_RST  PB_5 //D11
+#define DSP_DC   PB_4 //D12
+// UART for RX (CPU->DP) and TX (DP->CPU) combined
+#define HP_RX PA_10 // serial1 RX
+// misc
+#define DBGPIN PA_12
+
 #elif defined STM32F446xx
 // display
 #define DSP_MOSI PB_15
@@ -497,7 +509,6 @@
   for (uint8_t i=0; i<8; i++)
     err[i] = 0;
   while(1) {
-    if (hp != NULL) {
       if (hp->cmd_available())
 	{
 	  led = 1;
@@ -541,12 +552,8 @@
 	    }
 	  led = 0;
 	}
-    }
-    else {
-      show(0x00, "hello", 6);
-    }
-      
-  Thread::wait(10);
+      else
+	Thread::wait(1);
   }
 }