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61 lines
1.7 KiB
61 lines
1.7 KiB
3 months ago
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#ifndef _SPI_H_
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#define _SPI_H_
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <stdint.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <pthread.h>
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#include <sys/ioctl.h>
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#include <linux/spi/spidev.h>
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#define SPI_DEVICE "/dev/spidev0.0"
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#define SPI_MODULE SPI_MODE_1
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#define SPI_MAX_SPEED ( 25 * 1000 * 1000)
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#define SPI_NBITS 8
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#define SPI_FIRST 0
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#define SPI_BUFFER_NUM 1024
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class Spi
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{
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public :
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Spi(char *para_dev = SPI_DEVICE , int para_mode = SPI_MODULE , int para_max_speed = SPI_MAX_SPEED , int para_nbits = SPI_NBITS , int para_first = SPI_FIRST) ;
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~Spi() ;
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void spiMutexLock() ;
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void spiMutexUnlock() ;
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void printTxBuffer() ;
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void printRxBuffer() ;
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int getTxLength() ;
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int getRxLength() ;
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uint8_t* getTxBuffer() ;
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uint8_t* getRxBuffer() ;
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void printTxBuffer(uint8_t *para_tx_buffer , int para_tx_len) ;
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void printRxBuffer(uint8_t *para_rx_buffer , int para_rx_len) ;
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int singleWriteSpi(unsigned char *para_tx_buffer , int para_tx_len) ;
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int singleReadSpi(unsigned char *para_rx_buffer , int para_rx_len) ;
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int writeSpi(unsigned char *para_tx_buffer , int para_tx_len) ;
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int readSpi( unsigned char *para_rx_buffer , int para_rx_len) ;
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int readWriteSpi(unsigned char *para_tx_buffer , unsigned char *para_rx_buffer , int para_tx_len , int para_rx_len ) ;
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private :
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int spi_fd ;
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int mode ;
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int max_speed ;
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int nbits ;
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int first ;
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int ret ;
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pthread_mutex_t spi_mutex ;
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uint8_t tx_buffer[SPI_BUFFER_NUM] ;
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uint8_t rx_buffer[SPI_BUFFER_NUM] ;
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} ;
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#endif
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