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-rw-r--r--source/libmaple/api/nvic.rst43
1 files changed, 33 insertions, 10 deletions
diff --git a/source/libmaple/api/nvic.rst b/source/libmaple/api/nvic.rst
index b22c94b..505e36e 100644
--- a/source/libmaple/api/nvic.rst
+++ b/source/libmaple/api/nvic.rst
@@ -1,25 +1,44 @@
.. highlight:: c
.. _libmaple-nvic:
-``nvic.h``
-==========
+``<libmaple/nvic.h>``
+=====================
Nested Vector Interrupt Controller (NVIC) support.
+The same API is used on all targets, but the available interrupts are
+target-dependent. To manage this, each target series defines an
+:ref:`nvic_irq_num <libmaple-nvic-nvic_irq_num>` enumerator for each
+available interrupt.
+
.. contents:: Contents
:local:
-Types
------
-
-.. doxygenstruct:: nvic_reg_map
-.. doxygenenum:: nvic_irq_num
-
Devices
-------
None at this time.
+.. _libmaple-nvic-nvic_irq_num:
+
+``nvic_irq_num``
+----------------
+
+This target-dependent enum is used to identify an interrupt vector
+number. Interrupts which are common across series have the same token
+(though not necessarily the same value) for their ``nvic_irq_num``\ s.
+The available values on each supported target series are as follows.
+
+STM32F1 Targets
+~~~~~~~~~~~~~~~
+
+.. doxygenenum:: stm32f1::nvic_irq_num
+
+STM32F2 Targets
+~~~~~~~~~~~~~~~
+
+.. doxygenenum:: stm32f2::nvic_irq_num
+
Functions
---------
@@ -33,10 +52,14 @@ Functions
.. doxygenfunction:: nvic_irq_disable_all
.. doxygenfunction:: nvic_sys_reset
-Register Map Base Pointers
---------------------------
+Register Maps
+-------------
+
+Since the NVIC is part of the ARM core, its registers and base pointer
+are common across all targes.
.. doxygendefine:: NVIC_BASE
+.. doxygenstruct:: nvic_reg_map
Register Bit Definitions
------------------------