ppm_arch.h File Reference

#include "LPC21xx.h"
#include <BOARD_CONFIG>
#include "mcu_periph/sys_time.h"

Include dependency graph for ppm_arch.h:

Go to the source code of this file.

Macros
#define	RC_PPM_TICKS_OF_USEC(_v)   cpu_ticks_of_usec(_v)
	On tiny (and booz) the ppm counter is running at the same speed as the systic counter. More...
#define	RC_PPM_SIGNED_TICKS_OF_USEC(_v)   signed_cpu_ticks_of_usec(_v)
#define	USEC_OF_RC_PPM_TICKS(_v)   usec_of_cpu_ticks(_v)
#define	PPM_IT   PPM_CRI
#define	PPM_ISR()

Detailed Description

LPC21xx ppm decoder.

Definition in file ppm_arch.h.

Macro Definition Documentation

PPM_ISR

#define PPM_ISR

(

)

Value:

    {       \
    uint32_t now = PPM_CR;  \
    ppm_decode_frame(now);  \
  }

Definition at line 49 of file ppm_arch.h.

PPM_IT

#define PPM_IT   PPM_CRI

Definition at line 47 of file ppm_arch.h.

RC_PPM_SIGNED_TICKS_OF_USEC

#define RC_PPM_SIGNED_TICKS_OF_USEC

(

_v

)

signed_cpu_ticks_of_usec(_v)

Definition at line 44 of file ppm_arch.h.

RC_PPM_TICKS_OF_USEC

#define RC_PPM_TICKS_OF_USEC

(

_v

)

cpu_ticks_of_usec(_v)

On tiny (and booz) the ppm counter is running at the same speed as the systic counter.

There is no reason for this to be true. Let's add a pair of macros to make it possible for them to be different.

Definition at line 43 of file ppm_arch.h.

USEC_OF_RC_PPM_TICKS

#define USEC_OF_RC_PPM_TICKS

(

_v

)

usec_of_cpu_ticks(_v)

Definition at line 45 of file ppm_arch.h.