--- a/src/main.cpp	Tue Oct 11 21:44:04 2016 +0200
+++ b/src/main.cpp	Tue Oct 11 21:44:56 2016 +0200
@@ -21,11 +21,8 @@
 #define DSP_CS   PB_0 //D3
 #define DSP_RST  PB_5 //D11
 #define DSP_DC   PB_4 //D12
-// UART for RX (CPU->DP)
+// UART for RX (CPU->DP) and TX (DP->CPU) combined
 #define HP_RX PA_10 // serial1 RX
-// UART for TX (DP->CPU)
-#define HP_TX PA_3 // serial2 RX
-
 // misc
 #define DBGPIN PA_12