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112 | ------------------------------------------------------------------------------
-- --
-- Copyright (C) 2016-2020, AdaCore --
-- --
-- Redistribution and use in source and binary forms, with or without --
-- modification, are permitted provided that the following conditions are --
-- met: --
-- 1. Redistributions of source code must retain the above copyright --
-- notice, this list of conditions and the following disclaimer. --
-- 2. Redistributions in binary form must reproduce the above copyright --
-- notice, this list of conditions and the following disclaimer in --
-- the documentation and/or other materials provided with the --
-- distribution. --
-- 3. Neither the name of the copyright holder nor the names of its --
-- contributors may be used to endorse or promote products derived --
-- from this software without specific prior written permission. --
-- --
-- THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS --
-- "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT --
-- LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR --
-- A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT --
-- HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, --
-- SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT --
-- LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, --
-- DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY --
-- THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT --
-- (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE --
-- OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. --
-- --
------------------------------------------------------------------------------
with HAL; use HAL;
with System.Machine_Code; use System.Machine_Code;
package body nRF.Interrupts is
Handlers : array (nRF.Interrupts.Interrupt_Name) of Handler
:= (others => null);
procedure GNAT_IRQ_Handler;
pragma Export (Asm, GNAT_IRQ_Handler, "__adl_irq_handler");
------------------
-- Set_Priority --
------------------
procedure Set_Priority (Int : Interrupt_Name; Prio : Interrupt_Priority) is
begin
Cortex_M.NVIC.Set_Priority (Int'Enum_Rep, Prio);
end Set_Priority;
------------
-- Enable --
------------
procedure Enable (Int : Interrupt_Name) is
begin
Cortex_M.NVIC.Enable_Interrupt (Int'Enum_Rep);
end Enable;
-------------
-- Disable --
-------------
procedure Disable (Int : Interrupt_Name) is
begin
Cortex_M.NVIC.Disable_Interrupt (Int'Enum_Rep);
end Disable;
-------------
-- Pending --
-------------
function Pending (Int : Interrupt_Name) return Boolean is
begin
return Cortex_M.NVIC.Pending (Int'Enum_Rep);
end Pending;
--------------
-- Register --
--------------
procedure Register (Id : nRF.Interrupts.Interrupt_Name;
Hdl : Handler)
is
begin
Handlers (Id) := Hdl;
end Register;
----------------------
-- GNAT_IRQ_Handler --
----------------------
procedure GNAT_IRQ_Handler is
Id : nRF.Interrupts.Interrupt_Name;
IPSR : UInt32;
begin
Asm ("mrs %0, ipsr",
UInt32'Asm_Output ("=r", IPSR),
Volatile => True);
IPSR := IPSR and 16#FF#;
Id := nRF.Interrupts.Interrupt_Name'Val (IPSR - 16);
if Handlers (Id) /= null then
Handlers (Id).all;
end if;
end GNAT_IRQ_Handler;
end nRF.Interrupts;
|