irblast.c File Reference

#include <compiler.h>
#include <string.h>
#include <dev/irqreg.h>
#include <sys/atom.h>
#include <sys/event.h>
#include <sys/thread.h>
#include <sys/device.h>
#include <arch/timer.h>
#include <dev/irblast.h>

Include dependency graph for irblast.c:

Data Structures
struct	_IRBLASTDCB
Typedefs
typedef struct _IRBLASTDCB	IRBLASTDCB
Functions
uint8_t	IrblastFreq2Ocr (uint8_t freqKHz)
	Converts carrier frequency in form of kHz to the timer OCR form.
int	IrblastPeriod2Ocr (uint8_t freqKHz, int entries, uint16_t *pCode)
	Converts ircode from carrier frequency periods form to the timer OCR form.
Variables
NUTDEVICE	devIrblast0

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Typedef Documentation

typedef struct _IRBLASTDCB IRBLASTDCB

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Function Documentation

uint8_t IrblastFreq2Ocr

(

uint8_t

freqKHz

)

Converts carrier frequency in form of kHz to the timer OCR form.

Parameters:

freqKHz

frequency in kHz, range 30-50.

Returns:

OCR form of the frequency used by the driver or 0.

References NutGetCpuClock().

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int IrblastPeriod2Ocr	(	uint8_t	freqKHz,
		int	entries,
		uint16_t *	pCode
	)

Converts ircode from carrier frequency periods form to the timer OCR form.

Given array of ir code in form of carrier frequency periods will be converted (in place) to the form of OCR periods used by the driver.

Parameters:

freqKHz	frequency in kHz, range 30-50, for 0 pulse time =10us will be used
entries	ir code length.
pCode	pointer to the array with ir code, each entry in range 1-999.

Returns:

number of entries properly converted or -1 on error.

References NutGetCpuClock().

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Variable Documentation

NUTDEVICE devIrblast0

Initial value:

 {
    0,                          
    {'i', 'r', 'b', 'l', 'a', 's', 't', '0', 0}
    ,                           
    IFTYP_STREAM,               
    0,                          
    0,                          
    0,                          
    &dcb_pwm0,                  
    IrblastInit,
    IrblastIOCtl,
    0,
    IrblastWrite,
    IrblastWrite_P,
    IrblastOpen,
    IrblastClose,
    0
}