add FiPy environment

src/hal/fipy.h

@@ -0,0 +1,19 @@
+// Hardware related definitions for Pycom LoPy Board (not: LoPy4)
+
+#define CFG_sx1272_radio 1
+#define HAS_LED NOT_A_PIN // LoPy4 has no on board LED, so we use RGB LED on LoPy4
+#define HAS_RGB_LED   0  // WS2812B RGB LED on GPIO0
+
+// Hardware pin definitions for Pycom LoPy4 board
+#define PIN_SPI_SS    18
+#define PIN_SPI_MOSI  27
+#define PIN_SPI_MISO  19
+#define PIN_SPI_SCK   5
+#define RST   LMIC_UNUSED_PIN
+#define DIO0  23 // LoRa IRQ
+#define DIO1  23 // workaround
+#define DIO2  LMIC_UNUSED_PIN
+
+// select WIFI antenna (internal = onboard / external = u.fl socket)
+#define HAS_ANTENNA_SWITCH  21      // pin for switching wifi antenna
+#define WIFI_ANTENNA 0              // 0 = internal, 1 = external