techo-display: first bits

variants/techo/platformio.ini

@@ -56,17 +56,23 @@ build_flags =
 extends = LilyGo_Techo
 build_flags =
   ${LilyGo_Techo.build_flags}
+  -I src/helpers/ui
   -D MAX_CONTACTS=100
   -D MAX_GROUP_CHANNELS=8
   -D BLE_PIN_CODE=123456
   -D BLE_DEBUG_LOGGING=1
+  -D DISPLAY_CLASS=GxEPDDisplay
+  -D HAS_GxEPD
 ;  -D ENABLE_PRIVATE_KEY_IMPORT=1
 ;  -D ENABLE_PRIVATE_KEY_EXPORT=1
 ;  -D MESH_PACKET_LOGGING=1
 ;  -D MESH_DEBUG=1
 build_src_filter = ${LilyGo_Techo.build_src_filter}
-  +<helpers/nrf52/*.cpp>
-  +<../examples/companion_radio/main.cpp>
+  +<helpers/nrf52/TechoBoard.cpp>
+  +<helpers/nrf52/SerialBLEInterface.cpp>
+  +<helpers/ui/GxEPDDisplay.cpp>
+  +<../examples/companion_radio>
 lib_deps =
   ${LilyGo_Techo.lib_deps}
   densaugeo/base64 @ ~1.4.0
+  zinggjm/GxEPD2 @ 1.6.2

variants/techo/variant.cpp

@@ -2,6 +2,10 @@
 #include "wiring_constants.h"
 #include "wiring_digital.h"
 
+const int MISO = PIN_SPI1_MISO;
+const int MOSI = PIN_SPI1_MOSI;
+const int SCK = PIN_SPI1_SCK;
+
 const uint32_t g_ADigitalPinMap[] = {
   0xff, 0xff, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13,
   14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26,

variants/techo/variant.h

@@ -96,10 +96,18 @@
 #define SX126X_DIO2_AS_RF_SWITCH
 #define SX126X_DIO3_TCXO_VOLTAGE 1.8
 
-#define PIN_SPI1_MISO           (39)
+////////////////////////////////////////////////////////////////////////////////
+// SPI1
+
+#define PIN_SPI1_MISO           (38)
 #define PIN_SPI1_MOSI           (29)
 #define PIN_SPI1_SCK            (31)
 
+// GxEPD2 needs that for a panel that is not even used !
+extern const int MISO;
+extern const int MOSI;
+extern const int SCK;
+
 ////////////////////////////////////////////////////////////////////////////////
 // Display