72 lines
1.7 KiB
C
72 lines
1.7 KiB
C
/*
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Copyright 2017 fishpepper <AT> gmail.com
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http:// www.gnu.org/licenses/>.
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author: fishpepper <AT> gmail.com
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*/
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#include "hal_ppm.h"
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#include "hal_io.h"
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#include "hal_timeout.h"
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#include "ppm.h"
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#include "wdt.h"
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#include "led.h"
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#if SBUS_ENABLED == 1
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void hal_ppm_init(void) {
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}
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void hal_ppm_tick() {
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}
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#else
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static int state = 1;
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static int failsafe = 0;
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void hal_ppm_init(void) {
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hal_io_set_ppm(state);
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}
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void hal_ppm_failsafe_enter(void) {
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failsafe = 1;
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}
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void hal_ppm_failsafe_exit(void) {
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failsafe = 0;
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}
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void hal_ppm_update_cvalue(int us) {
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// Keep singal up, until the last 200ms of the count.
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hal_timeout_add_ppm(us - HAL_PPM_US_TO_TICKCOUNT(200));
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}
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void hal_ppm_tick() {
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if (state == 1) {
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state = 0;
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if (!failsafe)
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hal_io_set_ppm(state);
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// Then lower the signal for another 200ms..
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hal_timeout_add_ppm(HAL_PPM_US_TO_TICKCOUNT(200));
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} else {
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state = 1;
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if (!failsafe)
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hal_io_set_ppm(state);
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// Call the code, that will call hal_ppm_update_cvalue back to us.
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hal_ppm_irq_callback();
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}
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}
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#endif // SBUS_ENABLED
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