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PCD
spi_speed
Syntax:
Parameters:
Returns:
Function:
Availability:
Requires:
Examples:
Example
Files:
Also See:
spi_speed( baud );
spi_speed( stream , baud );
spi_speed (stream , baud , clock );
stream – is the SPI stream to use as defined in the STREAM=name option in
#USE SPI.
band - the band rate to set the SPI module to
clock - the current clock rate to calculate the band rate with.
If not specified it uses the value specified in #use delay ().
Nothing.
Sets the SPI module's baud rate to the specified value.
This function is only available on devices with SPI hardware.
#USE SPI
spi_speed(250000);
spi_speed(SPI1_MODE0, 250000);
spi_speed(SPI1_MODE0, 125000, 8000000);
None
#USE SPI, spi_xfer(), spi_xfer_in(), spi_prewrite(), spi_init()
spi_write( ) spi_write2( )
Syntax:
spi_write([ wait ], value );
spi_write2( [wait ], value );
Parameters: value is an 8 bit int
wait - an optional parameter specifying whether the function will wait for the SPI
transfer to complete before exiting. Default is TRUE if not specified.
Returns:
Function:
Availability:
290
Nothing
Sends a byte out the SPI interface. This will cause 8 clocks to be generated. This
function will write the value out to the SPI. At the same time data is clocked out
data is clocked in and stored in a receive buffer. spi_read() may be used to read
the buffer.
This function is only available on devices with SPI hardware.
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