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-rw-r--r--wirish/ext_interrupts.cpp28
-rw-r--r--wirish/include/wirish/ext_interrupts.h21
2 files changed, 49 insertions, 0 deletions
diff --git a/wirish/ext_interrupts.cpp b/wirish/ext_interrupts.cpp
index a3e61fd..f72efbf 100644
--- a/wirish/ext_interrupts.cpp
+++ b/wirish/ext_interrupts.cpp
@@ -60,6 +60,34 @@ void attachInterrupt(uint8 pin, voidFuncPtr handler, ExtIntTriggerMode mode) {
}
/**
+ * @brief Registers an interrupt handler on a pin.
+ *
+ * @param pin Pin number
+ * @param handler Static class member function to run upon external interrupt
+ * trigger. The handler should take 1 argument and return void
+ * @param arg Argument that the handler will be passed when it's called. One
+ * use of this is to pass the specific instance of the class that
+ * will handle the interrupt.
+ * @param mode Type of transition to trigger on, e.g. falling, rising, etc.
+ *
+ * @sideeffect Registers a handler
+ * @see detachInterrupt()
+ */
+void attachInterrupt(uint8 pin, voidFuncPtr handler, void *arg, ExtIntTriggerMode mode) {
+ if (pin >= BOARD_NR_GPIO_PINS || !handler) {
+ return;
+ }
+
+ exti_trigger_mode outMode = exti_out_mode(mode);
+
+ exti_attach_callback((exti_num)(PIN_MAP[pin].gpio_bit),
+ gpio_exti_port(PIN_MAP[pin].gpio_device),
+ handler,
+ arg,
+ outMode);
+}
+
+/**
* @brief Disable any external interrupt attached to a pin.
* @param pin Pin number to detach any interrupt from.
*/
diff --git a/wirish/include/wirish/ext_interrupts.h b/wirish/include/wirish/ext_interrupts.h
index 933be04..1bd7956 100644
--- a/wirish/include/wirish/ext_interrupts.h
+++ b/wirish/include/wirish/ext_interrupts.h
@@ -69,6 +69,27 @@ typedef enum ExtIntTriggerMode {
void attachInterrupt(uint8 pin, voidFuncPtr handler, ExtIntTriggerMode mode);
/**
+ * @brief Registers an interrupt handler on a pin.
+ *
+ * The interrupt will be triggered on a given transition on the pin,
+ * as specified by the mode parameter. The handler runs in interrupt
+ * context. The new handler will replace whatever handler is
+ * currently registered for the pin, if any.
+ *
+ * @param pin Pin number
+ * @param handler Static class member function to run upon external interrupt
+ * trigger. The handler should take 1 argument and return void
+ * @param arg Argument that the handler will be passed when it's called. One
+ * use of this is to pass the specific instance of the class that
+ * will handle the interrupt.
+ * @param mode Type of transition to trigger on, e.g. falling, rising, etc.
+ *
+ * @sideeffect Registers a handler
+ * @see detachInterrupt()
+ */
+void attachInterrupt(uint8 pin, voidFuncPtr handler, void *arg, ExtIntTriggerMode mode);
+
+/**
* @brief Disable any registered external interrupt.
* @param pin Maple pin number
* @sideeffect unregisters external interrupt handler