Added support for LilyGo T-Echo

variants/techo/variant.cpp

@@ -0,0 +1,22 @@
+#include "variant.h"
+#include "wiring_constants.h"
+#include "wiring_digital.h"
+
+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,
+  27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39,
+  40, 41, 42, 43, 44, 45, 46, 47
+};
+
+void initVariant()
+{
+  pinMode(LED_RED, OUTPUT);
+  ledOff(LED_RED);
+
+  pinMode(LED_GREEN, OUTPUT);
+  ledOff(LED_GREEN);
+
+  pinMode(LED_BLUE, OUTPUT);
+  ledOff(LED_BLUE);
+}