Initial version

arduino/cores/esp32/WInterrupts.c

@@ -0,0 +1,74 @@
+/*
+  This file is part of the MKR WiFi 1010 firmware.
+  Copyright (C) 2018  Arduino AG (http://www.arduino.cc/)
+
+  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 Street, Fifth Floor, Boston, MA  02110-1301  USA
+*/
+
+#include <driver/gpio.h>
+
+#include "wiring_digital.h"
+
+#include "WInterrupts.h"
+
+static voidFuncPtr callbacksInt[GPIO_NUM_MAX] = { NULL };
+
+void IRAM_ATTR gpioInterruptHandler(void* arg)
+{
+  uint32_t pin = (uint32_t)arg;
+
+  if (callbacksInt[pin]) {
+    callbacksInt[pin]();
+  }
+}
+
+void attachInterrupt(uint32_t pin, voidFuncPtr callback, uint32_t mode)
+{
+  callbacksInt[pin] = callback;
+
+  switch (mode) {
+    case LOW:
+      gpio_set_intr_type((gpio_num_t)pin, GPIO_INTR_LOW_LEVEL);
+      gpio_wakeup_enable((gpio_num_t)pin, GPIO_INTR_LOW_LEVEL);
+      break;
+
+    case HIGH:
+      gpio_set_intr_type((gpio_num_t)pin, GPIO_INTR_HIGH_LEVEL);
+      gpio_wakeup_enable((gpio_num_t)pin, GPIO_INTR_HIGH_LEVEL);
+      break;
+
+    case CHANGE:
+      gpio_set_intr_type((gpio_num_t)pin, GPIO_INTR_ANYEDGE);
+      break;
+
+    case FALLING:
+      gpio_set_intr_type((gpio_num_t)pin, GPIO_INTR_NEGEDGE);
+      break;
+
+    case RISING:
+      gpio_set_intr_type((gpio_num_t)pin, GPIO_INTR_POSEDGE);
+      break;
+
+    default:
+      gpio_set_intr_type((gpio_num_t)pin, GPIO_INTR_DISABLE);
+      break;
+  }
+
+  gpio_install_isr_service(ESP_INTR_FLAG_LEVEL3);
+
+  gpio_isr_handler_add((gpio_num_t)pin, gpioInterruptHandler, (void*)pin);
+
+  gpio_intr_enable((gpio_num_t)pin);
+}