ppm_arch.c File Reference

PPM interface between ChibiOS and Paparazzi. More...

#include "modules/radio_control/radio_control.h"
#include "modules/radio_control/ppm.h"

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Functions
static void	icuperiodcb (ICUDriver *icup)
	PPM Pulse period callback. More...
static void	icuoverflowcb (ICUDriver *icup)
	PPM Overflow callback. More...
void	ppm_arch_init (void)
	Architecture dependant code. More...

Variables
uint8_t	ppm_cur_pulse
uint32_t	ppm_last_pulse_time
bool	ppm_data_valid
static uint32_t	timer_rollover_cnt
static ICUConfig	ppm_icucfg
	ICU timer configuration. More...

Detailed Description

PPM interface between ChibiOS and Paparazzi.

Input capture configuration has to be defined in board.h

Definition in file ppm_arch.c.

Function Documentation

icuoverflowcb()

static void icuoverflowcb ( ICUDriver *  icup )

static

PPM Overflow callback.

Definition at line 60 of file ppm_arch.c.

icuperiodcb()

static void icuperiodcb ( ICUDriver *  icup )

static

PPM Pulse period callback.

Definition at line 52 of file ppm_arch.c.

References ppm_decode_frame_width().

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ppm_arch_init()

void ppm_arch_init

(

void

)

Architecture dependant code.

Definition at line 90 of file ppm_arch.c.

References ppm_cur_pulse, ppm_icucfg, ppm_last_pulse_time, PPM_TIMER, RADIO_CONTROL_NB_CHANNEL, and timer_rollover_cnt.

Referenced by ppm_init().

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Variable Documentation

ppm_cur_pulse

uint8_t ppm_cur_pulse

Definition at line 35 of file ppm_arch.c.

Referenced by ppm_arch_init().

ppm_data_valid

bool ppm_data_valid

Definition at line 37 of file ppm_arch.c.

ppm_icucfg

ICUConfig ppm_icucfg

static

Initial value:

= {
 
 
 
 
 
 
 
  PPM_TIMER_FREQUENCY,
  NULL,
  icuperiodcb,
  icuoverflowcb,
  PPM_CHANNEL,
  0,
  0xFFFFFFFFU
}

ICU timer configuration.

There appears to be no difference between ICU_INPUT_ACTIVE_HIGH and ICU_INPUT_ACTIVE_LOW, it works in both cases. Further investigation needed.

Definition at line 73 of file ppm_arch.c.

Referenced by ppm_arch_init().

ppm_last_pulse_time

uint32_t ppm_last_pulse_time

Definition at line 36 of file ppm_arch.c.

Referenced by ppm_arch_init().

timer_rollover_cnt

uint32_t timer_rollover_cnt

static

Definition at line 38 of file ppm_arch.c.

Referenced by ppm_arch_init().