1 files changed, 28 insertions, 0 deletions
diff --git a/libmaple/nvic.h b/libmaple/nvic.h
index 1630bc1..e3b052d 100644
--- a/libmaple/nvic.h
+++ b/libmaple/nvic.h
@@ -27,6 +27,20 @@
 /**
  * @file nvic.h
  * @brief Nested vector interrupt controller support.
+ *
+ * Basic usage:
+ *
+ * @code
+ *   // Initialise the interrupt controller and point to the vector
+ *   // table at the start of flash.
+ *   nvic_init(0x08000000, 0);
+ *   // Bind in a timer interrupt handler
+ *   timer_attach_interrupt(TIMER_CC1_INTERRUPT, handler);
+ *   // Optionally set the priority
+ *   nvic_irq_set_priority(NVIC_TIMER1_CC, 5);
+ *   // All done, enable all interrupts
+ *   nvic_globalirq_enable();
+ * @endcode
  */
 
 #ifndef _NVIC_H_
@@ -146,8 +160,22 @@ typedef enum nvic_irq_num {
 #endif
 } nvic_irq_num;
 
+/*
+ * Initialises the interrupt controller and sets all interrupts to the
+ * lowest priority.
+ *
+ * For stand-alone products, the base address is normally the start of
+ * flash (0x08000000).
+ *
+ * @param vector_table_address  base address of the vector table
+ */
 void nvic_init(uint32 vector_table_address, uint32 offset);
+
+/**
+ * Sets the base address of the vector table.
+ */
 void nvic_set_vector_table(uint32 address, uint32 offset);
+
 void nvic_irq_set_priority(nvic_irq_num irqn, uint8 priority);
 
 /**