pwm_rx.c File Reference

#include <stdbool.h>
#include <stdint.h>
#include <stdlib.h>
#include <platform.h>
#include "build_config.h"
#include "debug.h"
#include "common/utils.h"
#include "config/config.h"
#include "system.h"
#include "nvic.h"
#include "gpio.h"
#include "timer.h"
#include "pwm_mapping.h"
#include "pwm_rx.h"

Include dependency graph for pwm_rx.c:

Data Structures
struct	pwmInputPort_t
struct	ppmDevice_s
struct	ppmISREvent_s

Macros
#define	DEBUG_PPM_ISR
#define	PPM_CAPTURE_COUNT   12
#define	PWM_INPUT_PORT_COUNT   8
#define	PWM_PORTS_OR_PPM_CAPTURE_COUNT   PPM_CAPTURE_COUNT
#define	INPUT_FILTER_TO_HELP_WITH_NOISE_FROM_OPENLRS_TELEMETRY_RX   0x03
#define	PPM_TIMER_PERIOD   0x10000
#define	PWM_TIMER_PERIOD   0x10000
#define	PPM_IN_MIN_SYNC_PULSE_US   2700
#define	PPM_IN_MIN_CHANNEL_PULSE_US   750
#define	PPM_IN_MAX_CHANNEL_PULSE_US   2250
#define	PPM_STABLE_FRAMES_REQUIRED_COUNT   25
#define	PPM_IN_MIN_NUM_CHANNELS   4
#define	PPM_IN_MAX_NUM_CHANNELS   PWM_PORTS_OR_PPM_CAPTURE_COUNT
#define	MIN_CHANNELS_BEFORE_PPM_FRAME_CONSIDERED_VALID   4
#define	MAX_MISSED_PWM_EVENTS   10
#define	UNUSED_PPM_TIMER_REFERENCE   0
#define	FIRST_PWM_PORT   0

Typedefs
typedef struct ppmDevice_s	ppmDevice_t
typedef struct ppmISREvent_s	ppmISREvent_t

Enumerations
enum	pwmInputMode_t { INPUT_MODE_PPM, INPUT_MODE_PWM }
enum	eventSource_e { SOURCE_OVERFLOW = 0, SOURCE_EDGE = 1 }

Functions
void	pwmICConfig (TIM_TypeDef *tim, uint8_t channel, uint16_t polarity)
void	ppmAvoidPWMTimerClash (const timerHardware_t *timerHardwarePtr, TIM_TypeDef *sharedPwmTimer)
bool	isPPMDataBeingReceived (void)
void	resetPPMDataReceivedState (void)
void	pwmRxInit (void)
bool	isPWMDataBeingReceived (void)
void	pwmInConfig (const timerHardware_t *timerHardwarePtr, uint8_t channel)
void	ppmInConfig (const timerHardware_t *timerHardwarePtr)
uint16_t	ppmRead (uint8_t channel)
uint16_t	pwmRead (uint8_t channel)

Variables
ppmDevice_t	ppmDev

Macro Definition Documentation

#define DEBUG_PPM_ISR

#define FIRST_PWM_PORT   0

#define INPUT_FILTER_TO_HELP_WITH_NOISE_FROM_OPENLRS_TELEMETRY_RX   0x03

#define MAX_MISSED_PWM_EVENTS   10

#define MIN_CHANNELS_BEFORE_PPM_FRAME_CONSIDERED_VALID   4

#define PPM_CAPTURE_COUNT   12

#define PPM_IN_MAX_CHANNEL_PULSE_US   2250

#define PPM_IN_MAX_NUM_CHANNELS   PWM_PORTS_OR_PPM_CAPTURE_COUNT

#define PPM_IN_MIN_CHANNEL_PULSE_US   750

#define PPM_IN_MIN_NUM_CHANNELS   4

#define PPM_IN_MIN_SYNC_PULSE_US   2700

#define PPM_STABLE_FRAMES_REQUIRED_COUNT   25

#define PPM_TIMER_PERIOD   0x10000

#define PWM_INPUT_PORT_COUNT   8

#define PWM_PORTS_OR_PPM_CAPTURE_COUNT   PPM_CAPTURE_COUNT

#define PWM_TIMER_PERIOD   0x10000

#define UNUSED_PPM_TIMER_REFERENCE   0

Typedef Documentation

typedef struct ppmDevice_s ppmDevice_t

typedef struct ppmISREvent_s ppmISREvent_t

Enumeration Type Documentation

enum eventSource_e

Enumerator
SOURCE_OVERFLOW
SOURCE_EDGE

enum pwmInputMode_t

Enumerator
INPUT_MODE_PPM
INPUT_MODE_PWM

Function Documentation

bool isPPMDataBeingReceived

(

void

)

bool isPWMDataBeingReceived

(

void

)

void ppmAvoidPWMTimerClash	(	const timerHardware_t *	timerHardwarePtr,
		TIM_TypeDef *	sharedPwmTimer
	)

void ppmInConfig

(

const timerHardware_t *

timerHardwarePtr

)

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uint16_t ppmRead

(

uint8_t

channel

)

void pwmICConfig	(	TIM_TypeDef *	tim,
		uint8_t	channel,
		uint16_t	polarity
	)

void pwmInConfig	(	const timerHardware_t *	timerHardwarePtr,
		uint8_t	channel
	)

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uint16_t pwmRead

(

uint8_t

channel

)

void pwmRxInit

(

void

)

void resetPPMDataReceivedState

(

void

)

Variable Documentation

ppmDevice_t ppmDev