Texas Instruments TMS320C6000 Benutzerhandbuch

2-17

void AD535_writeHwi(
  AD535_Handle  hAD535,
  int  val 
);

hAD535

Handle to codec channel, see 

AD535_open()

val

Value to be written to DAC.

none

Writes value to the input of the DAC. Unlike the 

AD535_write

 API, it

does not use polling to establish that the McBSP is ready to write another
sample. Rather, it requires the McBSP to already be ready. In other words,
the AD535_writeHwi is for use within an Interrupt Service Routine. The
face that you arrived at an McBSP transmit ISR signifies that the McBSP
is ready with another sample.

/* The function is included in the ISR associated to
McBSP receive event  XEVT */

void AD535_writeIsr(){
Uint val = 0x0066; 
AD535_writeHwi(hAD535,val);
}

void AD535_writeReg(
  AD535_Handle  hAD535,
  AD535_Reg     ad535Register, 
  Uint32        val 
);

hAD535

Handle to codec channel, see AD535_open()

ad535Register

Control register enumeration:

-

AD535_REG_CTRL0

-

AD535_REG_CTRL1

-

AD535_REG_CTRL2

-

AD535_REG_CTRL3

-

AD535_REG_CTRL4

-

AD535_REG_CTRL5

val

Value to be written to specified register

none