mirror of
https://github.com/portapack-mayhem/mayhem-firmware.git
synced 2024-12-25 16:47:37 +00:00
92 lines
3.3 KiB
Plaintext
92 lines
3.3 KiB
Plaintext
|
/*
|
||
|
|
ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010,
|
||
|
|
2011,2012,2013 Giovanni Di Sirio.
|
||
|
|
|
||
|
|
This file is part of ChibiOS/RT.
|
||
|
|
|
||
|
|
ChibiOS/RT is free software; you can redistribute it and/or modify
|
||
|
|
it under the terms of the GNU General Public License as published by
|
||
|
|
the Free Software Foundation; either version 3 of the License, or
|
||
|
|
(at your option) any later version.
|
||
|
|
|
||
|
|
ChibiOS/RT is distributed in the hope that it will be useful,
|
||
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
|
|
GNU General Public License for more details.
|
||
|
|
|
||
|
|
You should have received a copy of the GNU General Public License
|
||
|
|
along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||
|
|
|
||
|
|
---
|
||
|
|
|
||
|
|
A special exception to the GPL can be applied should you wish to distribute
|
||
|
|
a combined work that includes ChibiOS/RT, without being obliged to provide
|
||
|
|
the source code for any proprietary components. See the file exception.txt
|
||
|
|
for full details of how and when the exception can be applied.
|
||
|
|
*/
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @defgroup EXT EXT Driver
|
||
|
|
* @brief Generic EXT Driver.
|
||
|
|
* @details This module implements a generic EXT (EXTernal) driver.
|
||
|
|
* @pre In order to use the EXT driver the @p HAL_USE_EXT option
|
||
|
|
* must be enabled in @p halconf.h.
|
||
|
|
*
|
||
|
|
* @section ext_1 Driver State Machine
|
||
|
|
* The driver implements a state machine internally, not all the driver
|
||
|
|
* functionalities can be used in any moment, any transition not explicitly
|
||
|
|
* shown in the following diagram has to be considered an error and shall
|
||
|
|
* be captured by an assertion (if enabled).
|
||
|
|
* @if LATEX_PDF
|
||
|
|
* @dot
|
||
|
|
digraph example {
|
||
|
|
size="5, 7";
|
||
|
|
rankdir="LR";
|
||
|
|
|
||
|
|
node [shape=circle, fontname=Sans, fontsize=8, fixedsize="true", width="0.9", height="0.9"];
|
||
|
|
edge [fontname=Sans, fontsize=8];
|
||
|
|
|
||
|
|
uninit [label="EXT_UNINIT", style="bold"];
|
||
|
|
stop [label="EXT_STOP\nLow Power"];
|
||
|
|
active [label="EXT_ACTIVE"];
|
||
|
|
|
||
|
|
uninit -> stop [label="extInit()"];
|
||
|
|
stop -> stop [label="\nextStop()"];
|
||
|
|
stop -> active [label="\nextStart()"];
|
||
|
|
active -> stop [label="\nextStop()"];
|
||
|
|
active -> active [label="\nextStart()"];
|
||
|
|
}
|
||
|
|
* @enddot
|
||
|
|
* @else
|
||
|
|
* @dot
|
||
|
|
digraph example {
|
||
|
|
rankdir="LR";
|
||
|
|
|
||
|
|
node [shape=circle, fontname=Sans, fontsize=8, fixedsize="true", width="0.9", height="0.9"];
|
||
|
|
edge [fontname=Sans, fontsize=8];
|
||
|
|
|
||
|
|
uninit [label="EXT_UNINIT", style="bold"];
|
||
|
|
stop [label="EXT_STOP\nLow Power"];
|
||
|
|
active [label="EXT_ACTIVE"];
|
||
|
|
|
||
|
|
uninit -> stop [label="extInit()"];
|
||
|
|
stop -> stop [label="\nextStop()"];
|
||
|
|
stop -> active [label="\nextStart()"];
|
||
|
|
active -> stop [label="\nextStop()"];
|
||
|
|
active -> active [label="\nextStart()"];
|
||
|
|
}
|
||
|
|
* @enddot
|
||
|
|
* @endif
|
||
|
|
*
|
||
|
|
* @section ext_2 EXT Operations.
|
||
|
|
* This driver abstracts generic external interrupt sources, a callback
|
||
|
|
* is invoked when a programmable transition is detected on one of the
|
||
|
|
* configured channels. Several channel modes are possible.
|
||
|
|
* - <b>EXT_CH_MODE_DISABLED</b>, channel not used.
|
||
|
|
* - <b>EXT_CH_MODE_RISING_EDGE</b>, callback on a rising edge.
|
||
|
|
* - <b>EXT_CH_MODE_FALLING_EDGE</b>, callback on a falling edge.
|
||
|
|
* - <b>EXT_CH_MODE_BOTH_EDGES</b>, callback on a both edges.
|
||
|
|
* .
|
||
|
|
* @ingroup IO
|
||
|
|
*/
|