Development

README.md

@@ -0,0 +1,70 @@
+# Arduino Core for STM32F4 CPU
+
+This repository contains the source code and configuration files of the Arduino Core
+for ST Microelectronics STM32F4 processor (used on the Arduino STAR OTTO).
+
+## Installation on Arduino IDE
+
+This core is available as a package in the Arduino IDE cores manager.
+Just open the "Boards Manager" and install the package called:
+
+"Arduino STM32F4 Boards (32-bit ARM Cortex-M4)"
+
+## Support
+
+There is a dedicated section of the Arduino Forum for general discussion and project assistance:
+
+http://forum.arduino.org/index.php?board=98.0
+
+## Bugs or Issues
+
+If you find a bug you can submit an issue here on github:
+
+https://github.com/arduino/Arduino-core-stm32f4/issues
+
+Before posting a new issue, please check if the same problem has been already reported by someone else
+to avoid duplicates.
+
+## Contributions
+
+Contributions are always welcome. The preferred way to receive code cotribution is by submitting a
+Pull Request on github.
+
+## Hourly builds
+
+This repository is under a Continuous Integration system that every hour checks if there are updates and
+builds a release for testing (the so called "Hourly builds").
+
+The hourly builds are available through Boards Manager. If you want to install them:
+  1. Open the **Preferences** of the Arduino IDE.
+  2. Add this URL `http://downloads.arduino.cc/Hourly/STM32F4/package_stm32f4-hourly-build_index.json` in the **Additional Boards Manager URLs** field, and click OK.
+  3. Open the **Boards Manager** (menu Tools->Board->Board Manager...)
+  4. Install **Arduino STM32F4 core - Hourly build**
+  5. Select one of the boards under **STM32F4 Hourly build XX** in Tools->Board menu
+  6. Compile/Upload as usual
+
+If you already installed an hourly build and you want to update it with the latest:
+  1. Open the **Boards Manager** (menu Tools->Board->Board Manager...)
+  2. Remove **Arduino SAMD core - Hourly build**
+  3. Install again **Arduino SAMD core - Hourly build**, the Board Manager will download the latest build replacing the old one.
+
+## License and credits
+
+This core has been developed by Arduino.org in collaboration with STM.
+
+```
+  Copyright (c) 2017 Arduino.org  All right reserved.
+
+  This library is free software; you can redistribute it and/or
+  modify it under the terms of the GNU Lesser General Public
+  License as published by the Free Software Foundation; either
+  version 2.1 of the License, or (at your option) any later version.
+
+  This library is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+  See the GNU Lesser General Public License for more details.
+
+  You should have received a copy of the GNU Lesser General Public
+  License along with this library; if not, write to the Free Software
+  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

cores/arduino/io.h

@@ -43,70 +43,16 @@
 #include "adc.h"
 
 #include "wiring_time.h"
-
-/**
- * Specifies a GPIO pin behavior.
- * @see pinMode()
- */
-typedef enum WiringPinMode {
-    OUTPUT, /**< Basic digital output: when the pin is HIGH, the
-               voltage is held at +3.3v (Vcc) and when it is LOW, it
-               is pulled down to ground. */
-
-    OUTPUT_OPENDRAIN, /**< In open drain mode, the pin indicates
-                          "low" by accepting current flow to ground
-                          and "high" by providing increased
-                          impedance. An example use would be to
-                          connect a pin to a bus line (which is pulled
-                          up to a positive voltage by a separate
-                          supply through a large resistor). When the
-                          pin is high, not much current flows through
-                          to ground and the line stays at positive
-                          voltage; when the pin is low, the bus
-                          "drains" to ground with a small amount of
-                          current constantly flowing through the large
-                          resistor from the external supply. In this
-                          mode, no current is ever actually sourced
-                          from the pin. */
-
-    INPUT, /**< Basic digital input. The pin voltage is sampled; when
-              it is closer to 3.3v (Vcc) the pin status is high, and
-              when it is closer to 0v (ground) it is low. If no
-              external circuit is pulling the pin voltage to high or
-              low, it will tend to randomly oscillate and be very
-              sensitive to noise (e.g., a breath of air across the pin
-              might cause the state to flip). */
-
-    INPUT_PULLUP, /**< The state of the pin in this mode is reported
-                     the same way as with INPUT, but the pin voltage
-                     is gently "pulled up" towards +3.3v. This means
-                     the state will be high unless an external device
-                     is specifically pulling the pin down to ground,
-                     in which case the "gentle" pull-up will not
-                     affect the state of the input. */
-
-    INPUT_PULLDOWN, /**< The state of the pin in this mode is reported
-                       the same way as with INPUT, but the pin voltage
-                       is gently "pulled down" towards 0v. This means
-                       the state will be low unless an external device
-                       is specifically pulling the pin up to 3.3v, in
-                       which case the "gentle" pull-down will not
-                       affect the state of the input. */
-
-    INPUT_FLOAT, /**< Synonym for INPUT. */
-
-    OUTPUT_DAC, /**< This is a special mode for when the pin will be used for
-                     PWM output (a special case of digital output). */
-} WiringPinMode;
+#include "wiring_constants.h"
 
 /**
  * Configure behavior of a GPIO pin.
  *
  * @param pin Number of pin to configure.
  * @param mode Mode corresponding to desired pin behavior.
- * @see WiringPinMode
+ * @see PinMode
  */
-void pinMode(uint8 pin, WiringPinMode mode);
+void pinMode(uint8 pin, uint8 mode);
 
 /**
  * Writes a (digital) value to a pin.  The pin must have its

cores/arduino/wiring_constants.h

@@ -41,6 +41,29 @@
 extern "C"{
 #endif
 
+#define INPUT 0x0
+#define OUTPUT 0x1
+#define INPUT_PULLUP 0x2
+#define OUTPUT_OPENDRAIN 0x3
+#define INPUT_PULLUP 0x4
+#define INPUT_PULLDOWN 0x5
+#define INPUT_FLOAT 0x6
+#define OUTPUT_DAC 0x7
+
+#define true 0x1
+#define false 0x0
+
+#define PI 3.1415926535897932384626433832795
+#define HALF_PI 1.5707963267948966192313216916398
+#define TWO_PI 6.283185307179586476925286766559
+#define DEG_TO_RAD 0.017453292519943295769236907684886
+#define RAD_TO_DEG 57.295779513082320876798154814105
+#define EULER 2.718281828459045235360287471352
+
+#define SERIAL  0x0
+#define DISPLAY 0x1
+
+
 typedef unsigned short word;
 
 enum BitOrder {

cores/arduino/wiring_digital.cpp

@@ -38,7 +38,7 @@
 #include "Arduino.h"
 #include "dac.h"
 
-void pinMode(uint8 pin, WiringPinMode mode)
+void pinMode(uint8 pin, uint8 mode)
 {
     gpio_pin_mode outputMode;
     boolean pwm = false;