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#include "../spi.h"
#include "mcu/mcu_def.h"
inline void ioe_spi_join(void) {
// TODO
}
inline int ioe_spi_bussy(void) {
}
#ifdef IOE_SPI_MASTER
inline void ioe_spi_init(void) {
// Set MOSI and SCK output
DDR_SPI |= _BV(DD_MOSI) | _BV(DD_SCLK);
// Set MISO pull up resistor
PORT_SPI |= _BV(PORT_MISO);
// Enable SPI interrupt
SPCR |= _BV(SPIE);
// Enable SPI master and set clock rate fck/16
SPCR = _BV(SPE) | _BV(MSTR) | _BV(SPR0);
}
inline void ioe_spi_transfer(int8_t data) {
SPDR = data;
}
#else /* IOE_SPI_MASTER */
inline void ioe_spi_init(void) {
// Set MISO as output
DDR_SPI = _BV(DD_MISO);
// Set SCLK and MOSI pull up resistor
PORT_SPI |= _BV(PORT_SCLK) | _BV(PORT_MOSI);
// Enable SPI interrupt
SPCR |= _BV(SPIE);
// Enable SPI
SPCR = _BV(SPE);
}
inline void ioe_spi_expose(int8_t data) {
SPDR = data;
}
#endif /* IOE_SPI_MASTER */
SIGNAL(SPI_STC_vect) {
ioe_spi_retrieve(SPDR);
}
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