icp.h File Reference

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Detailed Description

Atmel Corporation

• File : icp.h
• Compiler : IAR EWAAVR 3.20

• Support mail : avr@atmel.com

• Supported devices : All devices with an Input Capture Unit can be used. The example is written for ATmega64

• AppNote : AVR135 - Pulse-Width Demodulation

• Description : Header file for Pulse-Width Demodulation

Originally authored by Bruce McKenny

Revision

1.5

Date

Wednesday, November 02, 2005 13:20:02 UTC

Definition in file icp.h.

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Go to the source code of this file.

Defines
#define	_AVR135_ICP_H_   1
#define	ICP_ANALOG   1
#define	ICP_BUFSIZE   1
#define	ICP_RX_QSIZE   ICP_BUFSIZE
#define	ICP_SCALE   256U
Typedefs
typedef unsigned char	icp_sample_t
typedef unsigned int	icp_total_t
Functions
void	icp_init (void)
icp_sample_t	icp_rx (void)

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Define Documentation

#define _AVR135_ICP_H_   1

Definition at line 24 of file icp.h.

#define ICP_ANALOG   1

Definition at line 26 of file icp.h.

#define ICP_BUFSIZE   1

Definition at line 28 of file icp.h.

#define ICP_RX_QSIZE   ICP_BUFSIZE

Definition at line 30 of file icp.h. Referenced by icp_rx().

#define ICP_SCALE   256U

Definition at line 35 of file icp.h. Referenced by TIMER1_COMPA().

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Typedef Documentation

typedef unsigned char icp_sample_t

Definition at line 37 of file icp.h.

typedef unsigned int icp_total_t

Definition at line 38 of file icp.h.

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Function Documentation

void icp_init (  void   )

icp_init() Set up the ICP timer. Definition at line 328 of file icp.c. References ICP_CTL, ICP_CTL_A, ICP_IE, ICP_OC_IE, ICP_OCR, ICP_PRESCALE, and ICP_START_SENSE. Referenced by main().

icp_sample_t icp_rx (  void   )

icp_rx() Fetch a sample from the queue. For analog mode, this is a moving average of the last QSIZE readings. For digital, it is the oldest reading. Definition at line 298 of file icp.c. References ICP_RX_QSIZE, icp_rx_tail, and icp_total. Referenced by main().

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