Add support for Arduino 101 (full) & Zero (partial, interrupts not working)

Author: PaulStoffregen

utility/direct_pin_read.h

@@ -22,18 +22,53 @@
 #define PIN_TO_BITMASK(pin)             (digitalPinToBitMask(pin))
 #define DIRECT_PIN_READ(base, mask)	(((*(base+4)) & (mask)) ? 1 : 0)
 
-/* ESP8266 v2.0.0 Arduino workaround for bug https://github.com/esp8266/Arduino/issues/1110
-   Once ESP8266 Arduino v2.1.0 is released, this #elif should be removed and line 11 of this
-   file should read:
-   #elif defined(__SAM3X8E__) || defined(ESP8266)
-*/
+/* ESP8266 v2.0.0 Arduino workaround for bug https://github.com/esp8266/Arduino/issues/1110 */
 #elif defined(ESP8266)
 
 #define IO_REG_TYPE			uint32_t
-#define PIN_TO_BASEREG(pin)             ((volatile uint32_t *)(0x60000000+(0x318))) //Bypassing erroneous preprocessor macros
+#define PIN_TO_BASEREG(pin)             ((volatile uint32_t *)(0x60000000+(0x318)))
 #define PIN_TO_BITMASK(pin)             (digitalPinToBitMask(pin))
 #define DIRECT_PIN_READ(base, mask)     (((*(base)) & (mask)) ? 1 : 0)
-/* End of workaround */
+
+#elif defined(__SAMD21G18A__)
+
+#define IO_REG_TYPE                     uint32_t
+#define PIN_TO_BASEREG(pin)             portModeRegister(digitalPinToPort(pin))
+#define PIN_TO_BITMASK(pin)             (digitalPinToBitMask(pin))
+#define DIRECT_PIN_READ(base, mask)     (((*((base)+8)) & (mask)) ? 1 : 0)
+
+#elif defined(RBL_NRF51822)
+
+#define IO_REG_TYPE                     uint32_t
+#define PIN_TO_BASEREG(pin)             (0)
+#define PIN_TO_BITMASK(pin)             (pin)
+#define DIRECT_PIN_READ(base, pin)      nrf_gpio_pin_read(pin)
+
+#elif defined(__arc__) /* Arduino101/Genuino101 specifics */
+
+#include "scss_registers.h"
+#include "portable.h"
+#include "avr/pgmspace.h"
+#define GPIO_ID(pin)                    (g_APinDescription[pin].ulGPIOId)
+#define GPIO_TYPE(pin)                  (g_APinDescription[pin].ulGPIOType)
+#define GPIO_BASE(pin)                  (g_APinDescription[pin].ulGPIOBase)
+#define EXT_PORT_OFFSET_SS              0x0A
+#define EXT_PORT_OFFSET_SOC             0x50
+#define PIN_TO_BASEREG(pin)             ((volatile uint32_t *)g_APinDescription[pin].ulGPIOBase)
+#define PIN_TO_BITMASK(pin)             pin
+#define IO_REG_TYPE                     uint32_t
+static inline __attribute__((always_inline))
+IO_REG_TYPE directRead(volatile IO_REG_TYPE *base, IO_REG_TYPE pin)
+{
+    IO_REG_TYPE ret;
+    if (SS_GPIO == GPIO_TYPE(pin)) {
+        ret = READ_ARC_REG(((IO_REG_TYPE)base + EXT_PORT_OFFSET_SS));
+    } else {
+        ret = MMIO_REG_VAL_FROM_BASE((IO_REG_TYPE)base, EXT_PORT_OFFSET_SOC);
+    }
+    return ((ret >> GPIO_ID(pin)) & 0x01);
+}
+#define DIRECT_PIN_READ(base, pin)      directRead(base, pin)
 
 #endif
 

utility/interrupt_pins.h

@@ -85,7 +85,7 @@
   #define CORE_NUM_INTERRUPT    1
   #define CORE_INT0_PIN		2
 
-// Arduino Due (untested)
+// Arduino Due
 #elif defined(__SAM3X8E__) 
   #define CORE_NUM_INTERRUPT	54
   #define CORE_INT0_PIN		0
@@ -159,6 +159,42 @@
   #define CORE_INT14_PIN	14
   #define CORE_INT15_PIN	15
 
+// Arduino Zero - TODO: interrupts do not seem to work
+//                      please help, contribute a fix!
+#elif defined(__SAMD21G18A__)
+  #define CORE_NUM_INTERRUPT	20
+  #define CORE_INT0_PIN		0
+  #define CORE_INT1_PIN		1
+  #define CORE_INT2_PIN		2
+  #define CORE_INT3_PIN		3
+  #define CORE_INT5_PIN		5
+  #define CORE_INT6_PIN		6
+  #define CORE_INT7_PIN		7
+  #define CORE_INT8_PIN		8
+  #define CORE_INT9_PIN		9
+  #define CORE_INT10_PIN	10
+  #define CORE_INT11_PIN	11
+  #define CORE_INT12_PIN	12
+  #define CORE_INT13_PIN	13
+  #define CORE_INT14_PIN	14
+  #define CORE_INT15_PIN	15
+  #define CORE_INT16_PIN	16
+  #define CORE_INT17_PIN	17
+  #define CORE_INT18_PIN	18
+  #define CORE_INT19_PIN	19
+
+// Arduino 101
+#elif defined(__arc__)
+  #define CORE_NUM_INTERRUPT	14
+  #define CORE_INT2_PIN		2
+  #define CORE_INT5_PIN		5
+  #define CORE_INT7_PIN		7
+  #define CORE_INT8_PIN		8
+  #define CORE_INT10_PIN	10
+  #define CORE_INT11_PIN	11
+  #define CORE_INT12_PIN	12
+  #define CORE_INT13_PIN	13
+
 #endif
 #endif