88 lines
2.8 KiB
C
88 lines
2.8 KiB
C
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/*
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* This file is part of the Micro Python project, http://micropython.org/
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*
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* The MIT License (MIT)
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*
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* Copyright (c) 2016 Scott Shawcroft for Adafruit Industries
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "autoreset.h"
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#include "asf/sam0/drivers/tc/tc_interrupt.h"
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#include "lib/mp-readline/readline.h"
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#include "py/mphal.h"
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struct tc_module autoreset_timer;
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static bool autoreset_initialized = false;
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static bool autoreset_enabled = false;
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extern void inject_character(char);
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void mp_keyboard_interrupt(void);
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void autoreset_callback(struct tc_module *const module_inst) {
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if (autoreset_enabled) {
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mp_keyboard_interrupt();
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inject_character(CHAR_CTRL_D);
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}
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tc_stop_counter(&autoreset_timer);
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}
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void autoreset_init() {
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#ifdef AUTORESET_TIMER
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struct tc_config config_tc;
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tc_get_config_defaults(&config_tc);
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config_tc.counter_size = TC_COUNTER_SIZE_16BIT;
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config_tc.clock_prescaler = TC_CLOCK_PRESCALER_DIV256;
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config_tc.counter_16_bit.compare_capture_channel[0] = 0xFFFF;
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tc_init(&autoreset_timer, AUTORESET_TIMER, &config_tc);
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tc_enable(&autoreset_timer);
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tc_register_callback(&autoreset_timer, autoreset_callback, TC_CALLBACK_CC_CHANNEL0);
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tc_enable_callback(&autoreset_timer, TC_CALLBACK_CC_CHANNEL0);
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tc_stop_counter(&autoreset_timer);
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autoreset_initialized = true;
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#endif
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}
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void autoreset_enable() {
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autoreset_enabled = true;
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}
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void autoreset_disable() {
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autoreset_enabled = false;
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}
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void autoreset_start() {
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if (!autoreset_initialized) return;
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tc_stop_counter(&autoreset_timer);
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tc_start_counter(&autoreset_timer);
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}
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void autoreset_stop() {
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if (!autoreset_initialized) return;
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tc_stop_counter(&autoreset_timer);
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}
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