terom@10: #ifndef QMSK_SPI_H
terom@10: #define QMSK_SPI_H
terom@10: 
terom@10: #include "stdlib.h"
terom@10: #include "port.h"
terom@10: 
terom@10: static ioport_t *const SPI_DDR = &DDRB;
terom@10: static ioport_t *const SPI_PORT = &PORTB;
terom@10: 
terom@10: static const byte SPI_SCK   = PORTB5;
terom@10: static const byte SPI_MISO  = PORTB4;
terom@10: static const byte SPI_MOSI  = PORTB3;
terom@10: static const byte SPI_SS    = PORTB2;
terom@10: 
terom@10: enum spi_dord {
terom@10:     SPI_DORD_MSB        = 0b0,
terom@10: 
terom@10:     SPI_DORD            = SPI_DORD_MSB
terom@10: };
terom@10: 
terom@10: enum spi_cpol {
terom@10:     SPI_CPOL_0 = 0b0,
terom@10:     SPI_CPOL_1 = 0b1,
terom@10: 
terom@10:     SPI_CPOL   = SPI_CPOL_1 // mode 3
terom@10: };
terom@10: 
terom@10: enum spi_cpha {
terom@10:     SPI_CPHA_0  = 0b0,
terom@10:     SPI_CPHA_1  = 0b1,
terom@10: 
terom@10:     SPI_CPHA   = SPI_CPHA_1 // mode 3
terom@10: };
terom@10: 
terom@10: enum spi_clock {
terom@10:     SPI_CLOCK_4         = 0b000,
terom@10:     SPI_CLOCK_16        = 0b001,
terom@10:     SPI_CLOCK_64        = 0b010,
terom@10:     SPI_CLOCK_128       = 0b011,
terom@10: 
terom@10:     SPI_CLOCK           = SPI_CLOCK_16
terom@10: };
terom@10: 
terom@10: #define SPI_COUNT 2
terom@10: 
terom@10: /*
terom@10:  * Initialize in SPI master mode.
terom@10:  */
terom@10: void spi_init ();
terom@10: 
terom@10: /*
terom@10:  * Write out value, and return read value.
terom@10:  */
terom@10: byte spi_readwrite (byte value);
terom@10: 
terom@10: /*
terom@10:  * Perform an SPI bus update.
terom@10:  */
terom@10: void spi_update ();
terom@10: 
terom@10: void spi_set (byte index, byte value);
terom@10: 
terom@10: byte spi_get (byte index);
terom@10: 
terom@10: #endif