esp8266: Add hard IRQ callbacks for pin change on GPIO0-15.

1 files changed, 37 insertions, 0 deletions

diff --git a/esp8266/intr.c b/esp8266/intr.c
new file mode 100644
index 0000000000..62da4a721a
--- /dev/null
+++ b/esp8266/intr.c
@@ -0,0 +1,37 @@
+/*
+ * This file is part of the MicroPython project, http://micropython.org/
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2016 Damien P. George
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#include "etshal.h"
+#include "ets_alt_task.h"
+
+#include "modpyb.h"
+
+// this is in a separate file so it can go in iRAM
+void pin_intr_handler_iram(void *arg) {
+    uint32_t status = GPIO_REG_READ(GPIO_STATUS_ADDRESS);
+    GPIO_REG_WRITE(GPIO_STATUS_W1TC_ADDRESS, status);
+    pin_intr_handler(status);
+}