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90 lines
2.5 KiB
90 lines
2.5 KiB
//
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// Created by MightyPork on 2018/02/03.
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//
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#ifndef GEX_F072_FCAP_INTERNAL_H
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#define GEX_F072_FCAP_INTERNAL_H
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#ifndef FCAP_INTERNAL
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#error bad include!
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#endif
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#include "unit_base.h"
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enum fcap_opmode {
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OPMODE_IDLE = 0,
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OPMODE_BUSY = 1, // used after capture is done, before it's reported
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OPMODE_PWM_CONT = 2,
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OPMODE_PWM_BURST = 3, // averaging
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};
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/** Private data structure */
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struct priv {
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// settings
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char signal_pname; // the input pin - one of TIM2 channels
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uint8_t signal_pnum;
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// internal state
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TIM_TypeDef *TIMx;
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uint32_t ll_ch_b;
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uint32_t ll_ch_a;
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bool a_direct;
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enum fcap_opmode opmode;
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TF_ID request_id;
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uint8_t n_skip; //!< Periods to skip before starting the real capture
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union {
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struct {
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uint32_t ontime; // length of the captured positive pulse in the current interval
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uint32_t last_period; //!< length of the captured interval between two rising edges
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uint32_t last_ontime; //!< length of the last captured ontime
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} pwm_cont;
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struct {
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uint32_t ontime; // length of the captured positive pulse in the current interval
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uint64_t period_acu; //!< length of the captured interval between two rising edges, sum
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uint64_t ontime_acu; //!< length of the last captured ontime, sum
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uint16_t n_count; //!< Periods captured
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uint16_t n_target; //!< Periods captured - requested count
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} pwm_burst;
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};
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};
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/** Allocate data structure and set defaults */
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error_t UFCAP_preInit(Unit *unit);
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/** Load from a binary buffer stored in Flash */
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void UFCAP_loadBinary(Unit *unit, PayloadParser *pp);
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/** Write to a binary buffer for storing in Flash */
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void UFCAP_writeBinary(Unit *unit, PayloadBuilder *pb);
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// ------------------------------------------------------------------------
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/** Parse a key-value pair from the INI file */
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error_t UFCAP_loadIni(Unit *unit, const char *key, const char *value);
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/** Generate INI file section for the unit */
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void UFCAP_writeIni(Unit *unit, IniWriter *iw);
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// ------------------------------------------------------------------------
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/** Finalize unit set-up */
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error_t UFCAP_init(Unit *unit);
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/** Tear down the unit */
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void UFCAP_deInit(Unit *unit);
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// ------------------------------------------------------------------------
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void UFCAP_TimerHandler(void *arg);
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void UFCAP_StopMeasurement(Unit *unit);
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void UFCAP_ConfigureForPWMCapture(Unit *unit);
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void UFCAP_SwitchMode(Unit *unit, enum fcap_opmode opmode);
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#endif //GEX_F072_FCAP_INTERNAL_H
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