37 lines
822 B
C
37 lines
822 B
C
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/* Implementation of Delta-Sigma modulator support.
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*
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* Part of esp-open-rtos
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* Copyright (C) 2018 ourairquality (https://github.com/ourairquality)
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* Copyright (C) 2018 Zaltora (https://github.com/Zaltora)
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* BSD Licensed as described in the file LICENSE
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*/
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#ifndef EXTRAS_DSM_H_
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#define EXTRAS_DSM_H_
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include <stdint.h>
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#define MAX_DSM_PINS (8)
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#define DSM_DEBUG (0)
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/*
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* Freq = (80,000,000/prescale) * (target / 256) HZ (0 < target < 128)
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* Freq = (80,000,000/prescale) * ((256 - target) / 256) HZ (128 < target < 256)
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*/
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void dsm_init(uint8_t npins, const uint8_t* pins);
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void dsm_set_prescale(uint8_t prescale);
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void dsm_set_target(uint8_t target);
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void dsm_start();
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void dsm_stop();
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#ifdef __cplusplus
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}
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#endif
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#endif /* EXTRAS_DSM_H_ */
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