| 1 | #ifndef __SPI_MASTER_H
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| 2 | #define __SPI_MASTER_H
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| 3 | //-----------------------------------------------------------------------------
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| 4 |
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| 5 | #include "typedefs.h"
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| 6 | #include "application.h"
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| 7 | #include "usart.h"
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| 8 | //-----------------------------------------------------------------------------
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| 9 |
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| 10 | // Port Definitions
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| 11 | #define SPI_PRT PORTB
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| 12 | #define SPI_DDR DDRB
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| 13 |
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| 14 | // Bit Definitions
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| 15 | #define SPI_SCLK PB7
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| 16 | #define SPI_MOSI PB5
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| 17 | #define SPI_MISO PB6
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| 18 | // #define SPI_SS PB4 // not in this application!!! danger
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| 19 | #define SPI_E_CS PB4 //device 0
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| 20 | #define SPI_AD_CS PD3 //device 1
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| 21 | #define SPI_M_CS PD4 //device 2
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| 22 | #define SPI_A_CS PD5 //device 3
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| 23 |
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| 24 | #define SPI_READ_BUFFER_SIZE 16
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| 25 | #define SPI_WRITE_BUFFER_SIZE 16
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| 26 |
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| 27 | #define SPI_MAX_SLAVE_INDEX 2
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| 28 | #define SPI_MAX_CLOCK_INDEX 6
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| 29 |
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| 30 | //-----------------------------------------------------------------------------
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| 31 |
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| 32 | extern volatile U08 spi_clock_index;
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| 33 | extern volatile U08 spi_cpol;
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| 34 | extern volatile U08 spi_cpha;
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| 35 | extern volatile U08 spi_dord;
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| 36 | extern volatile U08 SPI_DEVICE_SS[4];
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| 37 | extern volatile BOOL SPI_DEVICE_ACTIVE_HIGH[4];
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| 38 |
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| 39 | extern volatile U08 spi_read_buffer[SPI_READ_BUFFER_SIZE];
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| 40 | extern volatile U08 spi_write_buffer[SPI_WRITE_BUFFER_SIZE];
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| 41 | //-----------------------------------------------------------------------------
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| 42 |
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| 43 | void spi_init(void);
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| 44 | void spi_transfer(U08 bytes, U08 device);
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| 45 | U08 spi_transfer_byte(U08 data);
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| 46 | void spi_set_clock_index(U08 clock_index);
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| 47 | void spi_set_dord(U08 dord);
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| 48 | void spi_set_cpol(U08 cpol);
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| 49 | void spi_set_cpha(U08 cpha);
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| 50 | void spi_setup(void);
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| 51 | void spi_transfer_string(U08 length, U08* addr, U08 device);
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| 52 | //-----------------------------------------------------------------------------
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| 53 |
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| 54 | #endif
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