Mikroelektronika MIKROE-724 データシート

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mikoBasic PRO for dsPIC30/33 and PIC24

MikroElektronika

Soft_SPI_Write

sub procedure Soft_SPI_Write(dim data_ as byte)

Description This routine sends one byte via the Software SPI bus.
Parameters - 

sdata

: data to be sent. 

Nothing.

Soft SPI must be initialized before using this function. See Soft_SPI_Init.

Soft_SPI_Write($AA)

None

Library Example

This code demonstrates using library routines for Soft_SPI communication. Also, this example demonstrates working 

with Microchip’s MCP4921 12-bit D/A converter.

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program Soft_SPI

dim Chip_Select as sbit at LATF0_bit

    SoftSpi_CLK as sbit at LATF6_bit

    SoftSpi_SDI as sbit at RF2_bit

    SoftSpi_SDO as sbit at LATF3_bit

dim Chip_Select_Direction as sbit at TRISF0_bit

    SoftSpi_CLK_Direction as sbit at TRISF6_bit

    SoftSpi_SDI_Direction as sbit at TRISF2_bit

    SoftSpi_SDO_Direction as sbit at TRISF3_bit

dim value as word

sub procedure InitMain()

  TRISB0_bit = 1                         ‘ Set RB0 pin as input

  TRISB1_bit = 1                         ‘ Set RB1 pin as input

  Chip_Select = 1                        ‘ Deselect DAC

  Chip_Select_Direction = 0              ‘ Set CS# pin as Output

  Soft_Spi_Init()                        ‘ Initialize Soft_SPI

sub procedure DAC_Output(dim valueDAC as word)

dim temp as byte volatile

  Chip_Select = 0                        ‘ Select DAC chip