GEX port to STM32F072. This is currently the main port.
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gex-f072/GexUnits/fcap/_fcap_internal.h

118 lines
3.4 KiB

//
// Created by MightyPork on 2018/02/03.
//
#ifndef GEX_F072_FCAP_INTERNAL_H
#define GEX_F072_FCAP_INTERNAL_H
#ifndef FCAP_INTERNAL
#error bad include!
#endif
#include "unit_base.h"
enum fcap_opmode {
OPMODE_IDLE = 0,
OPMODE_BUSY = 1, // used after capture is done, before it's reported
OPMODE_INDIRECT_CONT = 2,
OPMODE_INDIRECT_BURST = 3, // averaging
OPMODE_DIRECT_CONT = 4,
OPMODE_DIRECT_BURST = 5,
OPMODE_FREE_COUNTER = 6,
OPMODE_SINGLE_PULSE = 7,
};
/** Private data structure */
struct priv {
// settings
struct {
char signal_pname; // the input pin - one of TIM2 channels
uint8_t signal_pnum;
bool active_level;
uint8_t direct_presc;
uint8_t dfilter;
uint16_t direct_msec;
enum fcap_opmode startmode;
} conf;
// internal state
TIM_TypeDef *TIMx;
TIM_TypeDef *TIMy; // used as a timebase source for TIMx in direct mode
uint32_t ll_ch_b;
uint32_t ll_ch_a;
bool a_direct;
enum fcap_opmode opmode;
TF_ID request_id;
uint8_t n_skip; //!< Periods to skip before starting the real capture
bool active_level; // in PWM mode, the first part that is measured. (if 1, HHHLLL, else LLLHHH). In direct mode, clock polarity
uint8_t direct_presc;
uint16_t direct_msec;
uint8_t dfilter;
union {
struct {
uint32_t ontime; // length of the captured positive pulse in the current interval
uint32_t last_period; //!< length of the captured interval between two rising edges
uint32_t last_ontime; //!< length of the last captured ontime
} ind_cont;
struct {
uint32_t ontime; // length of the captured positive pulse in the current interval
uint64_t period_acu; //!< length of the captured interval between two rising edges, sum
uint64_t ontime_acu; //!< length of the last captured ontime, sum
uint16_t n_count; //!< Periods captured
uint16_t n_target; //!< Periods captured - requested count
} ind_burst;
struct {
uint32_t last_count; //!< Pulse count in the last capture window
} dir_cont;
struct {
uint16_t msec; // capture window length (used in the report callback) - different from the cont time, which is a semi-persistent config
} dir_burst;
};
};
/** Allocate data structure and set defaults */
error_t UFCAP_preInit(Unit *unit);
/** Load from a binary buffer stored in Flash */
void UFCAP_loadBinary(Unit *unit, PayloadParser *pp);
/** Write to a binary buffer for storing in Flash */
void UFCAP_writeBinary(Unit *unit, PayloadBuilder *pb);
// ------------------------------------------------------------------------
/** Parse a key-value pair from the INI file */
error_t UFCAP_loadIni(Unit *unit, const char *key, const char *value);
/** Generate INI file section for the unit */
void UFCAP_writeIni(Unit *unit, IniWriter *iw);
// ------------------------------------------------------------------------
/** Finalize unit set-up */
error_t UFCAP_init(Unit *unit);
/** Tear down the unit */
void UFCAP_deInit(Unit *unit);
// ------------------------------------------------------------------------
void UFCAP_SwitchMode(Unit *unit, enum fcap_opmode opmode);
void UFCAP_TIMxHandler(void *arg);
void UFCAP_TIMyHandler(void *arg);
uint32_t UFCAP_GetFreeCounterValue(Unit *unit);
uint32_t UFCAP_FreeCounterClear(Unit *unit);
#endif //GEX_F072_FCAP_INTERNAL_H