8502ee3c5c
For now only the proportional (Kp) and derivative (Kd) components are used, the integral term is 0.
40 lines
753 B
C
40 lines
753 B
C
/* Copyright (c) 2025 Rodrigo Arias Mallo <rodarima@gmail.com>
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* SPDX-License-Identifier: GPL-3.0-or-later */
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#ifndef BARISTA_HEATER_H
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#define BARISTA_HEATER_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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enum heater_state {
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HEATER_OFF = 0,
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HEATER_ON,
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};
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enum heater_cycle {
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CYCLE_ON = 0,
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CYCLE_OFF,
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};
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struct heater {
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enum heater_state st;
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enum heater_cycle cycle;
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unsigned long t0_on; /* current cycle time on */
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unsigned long t0_off; /* current cycle time off */
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/* Next cycle */
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unsigned long next_on_dt; /* in ms */
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};
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void heater_on(struct heater *h, unsigned long t_ms, float duty);
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void heater_off(struct heater *h);
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int heater_state(struct heater *h, unsigned long t_ms);
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#ifdef __cplusplus
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}
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#endif
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#endif /* BARISTA_HEATER_H */
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