Added support for ESP8266

.travis.yml

@@ -25,7 +25,7 @@ env:
     - PLATFORMIO_CI_SRC=examples/Bluetooth/SPPMulti
     - PLATFORMIO_CI_SRC=examples/Bluetooth/Wii
     - PLATFORMIO_CI_SRC=examples/Bluetooth/WiiBalanceBoard
-    - PLATFORMIO_CI_SRC=examples/Bluetooth/WiiIRCamera
+    - PLATFORMIO_CI_SRC=examples/Bluetooth/WiiIRCamera PLATFORMIO_BUILD_FLAGS="-DWIICAMERA"
     - PLATFORMIO_CI_SRC=examples/Bluetooth/WiiMulti
     - PLATFORMIO_CI_SRC=examples/Bluetooth/WiiUProController
     - PLATFORMIO_CI_SRC=examples/board_qc
@@ -63,7 +63,7 @@ env:
 
 install:
     - pip install -U platformio
-    - export PLATFORMIO_BUILD_FLAGS="-DDEBUG_USB_HOST -DWIICAMERA -Wall -Werror"
+    - export PLATFORMIO_BUILD_FLAGS="$PLATFORMIO_BUILD_FLAGS -DDEBUG_USB_HOST -Wall -Werror"
 
     #
     # Libraries from PlatformIO Library Registry:
@@ -74,4 +74,5 @@ install:
     - platformio lib install 62 416 417
 
 script:
-    - platformio ci --board=uno --board=due --board=genuino101 --board=teensy30 --board=teensy31 --board=teensy35 --board=teensy36 --board=teensylc --lib="."
+    - platformio ci --lib="." --board=uno --board=due --board=genuino101 --board=teensy30 --board=teensy31 --board=teensy35 --board=teensy36 --board=teensylc
+    - platformio ci --lib="." --board=esp12e --board=nodemcu --project-option="build_flags=-Wno-unused-function" # Workaround https://github.com/esp8266/Arduino/pull/2881

README.md

@@ -123,6 +123,11 @@ Currently the following boards are supported by the library:
     * Please see: <http://www.circuitsathome.com/mcu/usb/running-usb-host-code-on-digilent-chipkit-board>.
 * STM32F4
     * Currently the [NUCLEO-F446RE](http://www.st.com/web/catalog/tools/FM116/SC959/SS1532/LN1847/PF262063) is supported featuring the STM32F446. Take a look at the following example code: <https://github.com/Lauszus/Nucleo_F446RE_USBHost>.
+* ESP8266 is supported using the [ESP8266 Arduino core](https://github.com/esp8266/Arduino)
+    * Note it uses pin 15 and 5 for SS and INT respectively
+    * Also please be aware that:
+      * GPIO16 is **NOT** usable, as it will be used for some other purposes. For example, reset the SoC itself from sleep mode.
+      * GPIO6 to 11 is also **NOT** usable, as they are used to connect SPI flash chip and it is used for storing the executable binary content.
 
 The following boards need to be activated manually in [settings.h](settings.h):
 
@@ -317,11 +322,11 @@ HID devices are also supported by the library. However these require you to writ
 
 ### [MIDI Library](usbh_midi.cpp)
 
-The library support MIDI devices.  
+The library support MIDI devices.
 You can convert USB MIDI keyboard to legacy serial MIDI.
 
-* [USB_MIDI_converter.ino](examples/USBH_MIDI/USB_MIDI_converter/USB_MIDI_converter.ino) 
-* [USB_MIDI_converter_multi.ino](examples/USBH_MIDI/USB_MIDI_converter_multi/USB_MIDI_converter_multi.ino) 
+* [USB_MIDI_converter.ino](examples/USBH_MIDI/USB_MIDI_converter/USB_MIDI_converter.ino)
+* [USB_MIDI_converter_multi.ino](examples/USBH_MIDI/USB_MIDI_converter_multi/USB_MIDI_converter_multi.ino)
 
 For information see the following page: <http://yuuichiakagawa.github.io/USBH_MIDI/>.
 

UsbCore.h

@@ -39,6 +39,8 @@ typedef MAX3421e<P53, P54> MAX3421E; // Arduino Mega ADK
 typedef MAX3421e<P20, P19> MAX3421E; // Balanduino
 #elif defined(__ARDUINO_X86__) && PLATFORM_ID == 0x06
 typedef MAX3421e<P3, P2> MAX3421E; // The Intel Galileo supports much faster read and write speed at pin 2 and 3
+#elif defined(ESP8266)
+typedef MAX3421e<P15, P5> MAX3421E; // ESP8266 boards
 #else
 typedef MAX3421e<P10, P9> MAX3421E; // Official Arduinos (UNO, Duemilanove, Mega, 2560, Leonardo, Due etc.), Intel Edison, Intel Galileo 2 or Teensy 2.0 and 3.x
 #endif

avrpins.h

@@ -1326,6 +1326,47 @@ 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
+// GPIO 6 to 11 and 16 are not usable in this library.
+
+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(P12, 12); // MISO
+MAKE_PIN(P13, 13); // MOSI
+MAKE_PIN(P14, 14); // SCK
+MAKE_PIN(P15, 15); // SS
+
+#undef MAKE_PIN
+
 #else
 #error "Please define board in avrpins.h"
 

examples/USBH_MIDI/USBH_MIDI_dump/USBH_MIDI_dump.ino

@@ -67,7 +67,8 @@ void MIDI_poll()
     pid = Midi.pid;
   }
   if (Midi.RecvData( &rcvd,  bufMidi) == 0 ) {
-    sprintf(buf, "%08lX: ", (uint32_t)millis());
+    uint32_t time = (uint32_t)millis();
+    sprintf(buf, "%04X%04X: ", (uint16_t)(time >> 16), (uint16_t)(time & 0xFFFF)); // Split variable to prevent warnings on the ESP8266 platform
     Serial.print(buf);
     Serial.print(rcvd);
     Serial.print(':');

examples/USB_desc/USB_desc.ino

@@ -104,7 +104,11 @@ void loop()
     Usb.ForEachUsbDevice(&PrintAllDescriptors);
     Usb.ForEachUsbDevice(&PrintAllAddresses);
 
-    while ( 1 );                          //stop
+    while ( 1 ) { // stop
+#ifdef ESP8266
+        yield(); // needed in order to reset the watchdog timer on the ESP8266
+#endif
+    }
   }
 }
 

examples/board_qc/board_qc.ino

@@ -60,6 +60,9 @@ void setup() {
                 uint8_t sample_rd = 0;
                 uint8_t gpinpol_copy = Usb.regRd(rGPINPOL);
                 for(uint8_t i = 0; i < 16; i++) {
+#ifdef ESP8266
+                        yield(); // needed in order to reset the watchdog timer on the ESP8266
+#endif
                         for(uint16_t j = 0; j < 65535; j++) {
                                 Usb.regWr(rGPINPOL, sample_wr);
                                 sample_rd = Usb.regRd(rGPINPOL);
@@ -85,6 +88,9 @@ void setup() {
                 uint8_t tmpbyte;
                 E_Notify(PSTR("\r\nGPIO test. Connect GPIN0 to GPOUT7, GPIN1 to GPOUT6, and so on"), 0x80);
                 for(uint8_t sample_gpio = 0; sample_gpio < 255; sample_gpio++) {
+#ifdef ESP8266
+                        yield(); // needed in order to reset the watchdog timer on the ESP8266
+#endif
                         Usb.gpioWr(sample_gpio);
                         tmpbyte = Usb.gpioRd();
                         /* bit reversing code copied vetbatim from http://graphics.stanford.edu/~seander/bithacks.html#BitReverseObvious */
@@ -112,6 +118,9 @@ void setup() {
                 /* Restart oscillator */
                 E_Notify(PSTR("\r\nResetting oscillator\r\n"), 0x80);
                 for(uint16_t i = 0; i < 100; i++) {
+#ifdef ESP8266
+                        yield(); // needed in order to reset the watchdog timer on the ESP8266
+#endif
                         E_Notify(PSTR("\rReset number "), 0x80);
                         Serial.print(i, DEC);
                         Usb.regWr(rUSBCTL, bmCHIPRES); //reset
@@ -206,7 +215,11 @@ void loop() {
                                         print_hex(buf.bNumConfigurations, 8);
                                         /**/
                                         E_Notify(PSTR("\r\n\nAll tests passed. Press RESET to restart test"), 0x80);
-                                        while(1);
+                                        while(1) {
+#ifdef ESP8266
+                                                yield(); // needed in order to reset the watchdog timer on the ESP8266
+#endif
+                                        }
                                 }
                                 break;
                         case( USB_STATE_ERROR):
@@ -228,6 +241,9 @@ void halt55() {
 
         while(1) {
                 Usb.regWr(0x55, 0x55);
+#ifdef ESP8266
+                yield(); // needed in order to reset the watchdog timer on the ESP8266
+#endif
         }
 }
 
@@ -253,7 +269,11 @@ void print_hex(int v, int num_places) {
 /* prints "Press any key" and returns when key is pressed */
 void press_any_key() {
         E_Notify(PSTR("\r\nPress any key to continue..."), 0x80);
-        while(Serial.available() <= 0); //wait for input
+        while(Serial.available() <= 0) { // wait for input
+#ifdef ESP8266
+                yield(); // needed in order to reset the watchdog timer on the ESP8266
+#endif
+        }
         Serial.read(); //empty input buffer
         return;
 }

examples/pl2303/pl2303_tinygps/pl2303_tinygps.ino

@@ -150,12 +150,12 @@ void printFloat(double number, int16_t digits)
 
 void gpsdump(TinyGPS &gps)
 {
-  int32_t lat, lon;
+  long lat, lon;
   float flat, flon;
-  uint32_t age, date, time, chars;
-  int16_t year;
+  unsigned long age, date, time, chars;
+  int year;
   uint8_t month, day, hour, minute, second, hundredths;
-  uint16_t sentences, failed;
+  unsigned short sentences, failed;
 
   gps.get_position(&lat, &lon, &age);
   Serial.print("Lat/Long(10^-5 deg): "); Serial.print(lat); Serial.print(", "); Serial.print(lon);
@@ -175,7 +175,7 @@ void gpsdump(TinyGPS &gps)
 
   feedgps();
 
-  gps.crack_datetime((int*)&year, &month, &day, &hour, &minute, &second, &hundredths, &age);
+  gps.crack_datetime(&year, &month, &day, &hour, &minute, &second, &hundredths, &age);
   Serial.print("Date: "); Serial.print(static_cast<int>(month)); Serial.print("/"); Serial.print(static_cast<int>(day)); Serial.print("/"); Serial.print(year);
   Serial.print("  Time: "); Serial.print(static_cast<int>(hour)); Serial.print(":"); Serial.print(static_cast<int>(minute)); Serial.print(":"); Serial.print(static_cast<int>(second)); Serial.print("."); Serial.print(static_cast<int>(hundredths));
   Serial.print("  Fix age: ");  Serial.print(age); Serial.println("ms.");
@@ -189,7 +189,7 @@ void gpsdump(TinyGPS &gps)
 
   feedgps();
 
-  gps.stats(&chars, (unsigned short*)&sentences, (unsigned short*)&failed);
+  gps.stats(&chars, &sentences, &failed);
   Serial.print("Stats: characters: "); Serial.print(chars); Serial.print(" sentences: "); Serial.print(sentences); Serial.print(" failed checksum: "); Serial.println(failed);
 }
 

library.json

@@ -50,6 +50,7 @@
     "teensy",
     "atmelsam",
     "nordicnrf51",
-    "ststm32"
+    "ststm32",
+    "espressif8266"
   ]
 }

settings.h

@@ -177,4 +177,20 @@ extern SPI_HandleTypeDef SPI_Handle; // Needed to be declared in your main.cpp
 #define MFK_CASTUINT8T
 #endif
 
+// Workaround issue: https://github.com/esp8266/Arduino/issues/2078
+#ifdef ESP8266
+#undef PROGMEM
+#define PROGMEM
+#undef PSTR
+#define PSTR(s) (s)
+#undef pgm_read_byte
+#define pgm_read_byte(addr) (*reinterpret_cast<const uint8_t*>(addr))
+#undef pgm_read_word
+#define pgm_read_word(addr) (*reinterpret_cast<const uint16_t*>(addr))
+#endif
+
+#ifdef ARDUINO_ESP8266_WIFIO
+#error "This board is currently not supported"
+#endif
+
 #endif /* SETTINGS_H */