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app-switch.h
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app-switch.h
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/*
* MPG-Nano - Firmware and UCCNC plugin for Arduino Nano based serial-over-USB
* interface for modified 4-axis Chinese MPG pendant.
*
* https://github.com/mattbucknall/mpg-nano
*
* Copyright (c) 2021 Matthew T. Bucknall
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISIN
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
/**
* Selector switch polling and MPG LED control
*/
#ifndef _APP_SWITCH_H_
#define _APP_SWITCH_H_
#include <stdbool.h>
/**
* Enumeration of axis select switch positions.
*/
typedef enum {
APP_SWITCH_AXIS_OFF,
APP_SWITCH_AXIS_X,
APP_SWITCH_AXIS_Y,
APP_SWITCH_AXIS_Z,
APP_SWITCH_AXIS_4
} app_switch_axis_t;
/**
* Enumeration of step select switch positions.
*
* Uses:
* TIMER1
*/
typedef enum {
APP_SWITCH_STEP_X1,
APP_SWITCH_STEP_X10,
APP_SWITCH_STEP_X100,
APP_SWITCH_STEP_X1000 // <-- selected if MPG's side button is held down
} app_switch_step_t;
/**
* Must be called once with interrupts globally disabled, before main loop begins.
*/
void app_switch_init(void);
/**
* @return True if e-stop switch is pressed.
*/
bool app_switch_e_stop(void);
/**
* @return Axis select switch position.
*/
app_switch_axis_t app_switch_axis(void);
/**
* @return Step select switch position.
*/
app_switch_step_t app_switch_step(void);
#endif // _APP_SWITCH_H_