SPIINIT - Revision history

Admin: Created page with "= Action = Initiate the SPI pins. =
2013-02-12T17:25:50Z

Created page with "= <span class="f_Header">Action</span> = Initiate the SPI pins. <span style="font-family: Arial;"> </span> <span style="font-family: Arial;"> </span> = <span cla..."

New page
= <span class="f_Header">Action</span> =

Initiate the SPI pins.

<span style="font-family: Arial;"> </span>

<span style="font-family: Arial;"> </span>

= <span class="f_Header">Syntax</span> =

<span class="f_Syntax">SPIINIT</span>

<span style="font-family: Arial;"> </span>

<span style="font-family: Arial;"> </span>

= <span class="f_Header">Remarks</span> =

After the configuration of the SPI pins, you must initialize the SPI pins to set them for the right data direction. When the pins are not used by other hardware/software, you only need to use SPIINIT once.

When the SPI bus is used in master mode, the MOSI, CLOCK and SS pins will be set to output.

When the SPI bus is used in slave mode, the MISO is set to output mode.

 

If you need to change the logic levels of the SPI pins, you need to disable the SPI. You can do this by setting the SPE bit to 0 in SPCR.

<span style="font-family: Arial;"> </span>

When other routines change the state of the SPI pins, use SPIINIT again before using SPIIN and SPIOUT.

<span style="font-family: Arial;"> </span>

<span style="font-family: Arial;"> </span>

= <span class="f_Header">See also</span> =

[[SPIIN]] , [[SPIOUT]], [[CONFIG SPI|config spi]]

<span style="font-family: Arial;"> </span>

<span style="font-family: Arial;"> </span>

= <span class="f_Header">ASM</span> =

Calls _init_spi

<span style="font-family: Arial;"> </span>

<span style="font-family: Arial;"> </span>

= <span class="f_Header">Example</span> =

See [[SPIIN]]

<br/>{{Languages}}

[[Category:BASCOM Language Reference]]