Merge 8a2e205588 into cb1fb31e13

TFT_eSPI.cpp

@@ -166,6 +166,10 @@ void TFT_eSPI::init(void)
 #endif
 
   SPI.begin(); // This will set MISO to input
+  
+#ifdef D6_NOT_USED_FOR_MISO
+  pinMode(D6, OUTPUT);
+#endif
 
 #ifndef SUPPORT_TRANSACTIONS
   #ifdef SET_SPI_TO_LSB_FIRST

User_Setup.h

@@ -125,10 +125,16 @@
 
 // ##################################################################################
 //
-// Section 4. Not used section
+// Section 4. Define whether D6 is used for MISO
 //
 // ##################################################################################
 
+// Comment out the #define below to free up pin D6 for uses other than MISO
+// Specifically, this way it can be used for DC / CS
+// May be useful for pin-constrained applications
+// WARNING: this only works if the display is used write-only
+//
+// #define D6_NOT_USED_FOR_MISO
 
 // ##################################################################################
 //
@@ -145,8 +151,8 @@
 // #define SPI_FREQUENCY   5000000
 // #define SPI_FREQUENCY  10000000
 // #define SPI_FREQUENCY  20000000
- #define SPI_FREQUENCY  27000000 // Actually sets it to 26.67MHz = 80/3
+// #define SPI_FREQUENCY  27000000 // Actually sets it to 26.67MHz = 80/3
-// #define SPI_FREQUENCY  40000000 // Maximum to use SPIFFS
+#define SPI_FREQUENCY  40000000 // Maximum to use SPIFFS
 // #define SPI_FREQUENCY  80000000