Added support for ESP8266

Fixes #262

Author: Lauszus

.travis.yml

@@ -74,4 +74,4 @@ install:
     - platformio lib install 62 416 417
 
 script:
-    - platformio ci --board=uno --board=teensy31 --board=due --lib="."
+    - platformio ci --board=uno --board=teensy31 --board=due --board=esp12e --board=nodemcu --lib="."

avrpins.h

@@ -1242,6 +1242,52 @@ MAKE_PIN(P13, 13); //
 
 #undef MAKE_PIN
 
+#elif defined(ESP8266)
+
+#define pgm_read_pointer(p) pgm_read_ptr(p)
+
+#define MAKE_PIN(className, pin) \
+class className { \
+public: \
+  static void Set() { \
+    digitalWrite(pin, HIGH);\
+  } \
+  static void Clear() { \
+    digitalWrite(pin, LOW); \
+  } \
+  static void SetDirRead() { \
+    pinMode(pin, INPUT); \
+  } \
+  static void SetDirWrite() { \
+    pinMode(pin, OUTPUT); \
+  } \
+  static uint8_t IsSet() { \
+    return digitalRead(pin); \
+  } \
+};
+
+// Pinout for ESP-12 module
+// 0 .. 16 - Digital pins
+MAKE_PIN(P0, 0);
+MAKE_PIN(P1, 1); // TX0
+MAKE_PIN(P2, 2); // TX1
+MAKE_PIN(P3, 3); // RX0
+MAKE_PIN(P4, 4); // SDA
+MAKE_PIN(P5, 5); // SCL
+MAKE_PIN(P6, 6);
+MAKE_PIN(P7, 7);
+MAKE_PIN(P8, 8);
+MAKE_PIN(P9, 9);
+MAKE_PIN(P10, 10);
+MAKE_PIN(P11, 11);
+MAKE_PIN(P12, 12); // MISO
+MAKE_PIN(P13, 13); // MOSI
+MAKE_PIN(P14, 14); // SCK
+MAKE_PIN(P15, 15); // SS
+MAKE_PIN(P16, 16);
+
+#undef MAKE_PIN
+
 #else
 #error "Please define board in avrpins.h"
 

library.json

@@ -47,6 +47,7 @@
     "teensy",
     "atmelsam",
     "nordicnrf51",
-    "ststm32"
+    "ststm32",
+    "espressif8266"
   ]
 }

usbhost.h

@@ -97,6 +97,8 @@ typedef SPi< P13, P11, P12, P10 > spi;
 typedef SPi< P76, P75, P74, P10 > spi;
 #elif defined(RBL_NRF51822)
 typedef SPi< P16, P18, P17, P10 > spi;
+#elif defined(ESP8266)
+typedef SPi< SCK, MOSI, MISO, SS > spi; // Use pins defined in pins_arduino.h
 #else
 #error "No SPI entry in usbhost.h"
 #endif