irblast.c File Reference

Go to the source code of this file.

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

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.

Definition at line 119 of file irblast.c.

References NutGetCpuClock().

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.

Definition at line 144 of file irblast.c.

References NutGetCpuClock().


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
}

Definition at line 494 of file irblast.c.


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