spi.h File Reference

Containing defines and functions for basic SPI initialization and handling. More...

#include "../Pins/Pins.h"
#include <SPI.h>

Go to the source code of this file.

Macros
#define	SPI_DEFAULT_SETTINGS   SPISettings(8000000, MSBFIRST, SPI_MODE0)
	Default settings for the SPI.

Typedefs
typedef enum SpiDevices	SpiDevices_t
	Enumeration with all SPI devices.

Enumerations
enum	SpiDevices {   SPI_DEV_NONE , SPI_DEV_TOUCH , SPI_DEV_TFT , SPI_DEV_PS ,   SPI_DEV_DDS , SPI_DEV_IO_EXP }
	Enumeration with all SPI devices. More...

Functions
void	SPI_SelectDevice (SpiDevices_t spiDevice)
	Deselect all SPI devices (pull the CS lines high) and select the given one (pull the CS line low).
void	SPI_DeselectAll ()
	Deselect all SPI devices (pull the CS lines high).
void	SPI_Init ()
	Initialize the SPI subsystem as master.
uint8_t	SPI_SendByte (uint8_t data)
	Transfer a byte of data to the slave.
uint8_t	SPI_ReadByte ()
	Read a byte of data from the slave by sending a dummy byte (0xFF).

Detailed Description

Containing defines and functions for basic SPI initialization and handling.

Date

14.08.2020 19:24:17

Enumeration Type Documentation

SpiDevices

enum SpiDevices

Enumeration with all SPI devices.

Enumerator
SPI_DEV_NONE	No SPI device.
SPI_DEV_TOUCH	Touch controller XPT2046.
SPI_DEV_TFT	TFT controller ILI9341.
SPI_DEV_PS	Power supply channel DAC MCP4921.
SPI_DEV_DDS	DDS channel DAC MCP4922.
SPI_DEV_IO_EXP	IO expander MCP23S08.

Function Documentation

SPI_ReadByte()

uint8_t SPI_ReadByte ( )

inline

Read a byte of data from the slave by sending a dummy byte (0xFF).

Returns

Byte received form the slave.

SPI_SelectDevice()

void SPI_SelectDevice

(

SpiDevices_t

spiDevice

)

Deselect all SPI devices (pull the CS lines high) and select the given one (pull the CS line low).

Parameters

spiDevice

Requested SPI device which CS line is pulled low.

SPI_SendByte()

uint8_t SPI_SendByte ( uint8_t data )

inline

Transfer a byte of data to the slave.

Parameters

data	Data byte to transfer via SPI.

Returns

Byte received from the slave.