mirror of https://github.com/arendst/Tasmota.git
90 lines
1.6 KiB
C
90 lines
1.6 KiB
C
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/**
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* @file spi.h
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* Class declaration for SPI helper files
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*/
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/**
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* Example of spi.h class declaration for SPI portability
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*
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* @defgroup Porting_SPI Porting: SPI
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*
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*
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* @{
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*/
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#ifndef __XMEGASPI_H__
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#define __XMEGASPI_H__
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#include <avr/io.h>
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#include <stdint.h>
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//#include <string.h>
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//#include <unistd.h>
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//#include <stdio.h>
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//#include <stdlib.h>
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//#include <getopt.h>
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//#include <fcntl.h>
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//#include <sys/ioctl.h>
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//#include <inttypes.h>
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//#include <linux/types.h>
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//#include <linux/spi/spidev.h>
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#define SPI_SS_bm (1<<4) /* SPI SS pin mask 4 */
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#define SPI_MOSI_bm (1<<5) /* SPI MOSI pin mask 5 */
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#define SPI_MISO_bm (1<<6) /* SPI MISO pin mask 6 */
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#define SPI_SCK_bm (1<<7) /* SPI SCK pin mask 7 */
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using namespace std;
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class SPI {
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public:
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/**
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* SPI constructor
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*/
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SPI();
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/**
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* Start SPI
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* @param port is the SPI port (XMEGA_SPI_PORT_C for SPI on PORTC, XMEGA_SPI_PORT_D on PORTD etc).
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*/
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void begin(uint8_t port);
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/**
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* Transfer a single byte
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* @param tx_ Byte to send
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* @return Data returned via spi
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*/
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uint8_t transfer(uint8_t tx_);
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/**
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* Transfer a buffer of data
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* @param tbuf Transmit buffer
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* @param rbuf Receive buffer
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* @param len Length of the data
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*/
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void transfernb(char* tbuf, char* rbuf, uint32_t len);
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/**
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* Transfer a buffer of data without an rx buffer
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* @param buf Pointer to a buffer of data
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* @param len Length of the data
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*/
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void transfern(char* buf, uint32_t len);
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virtual ~SPI();
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private:
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/** Default SPI device */
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SPI_t * device;
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/* Port of the SPI */
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PORT_t * port;
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void init();
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};
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#endif /*__XMEGASPI_H__*/
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/*@}*/
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