Esempio n. 1
0
/**
 * \brief Initialize USART in SPI master mode.
 *
 * This function initializes the USART module in SPI master mode using the
 * usart_spi_options_t configuration structure and CPU frequency.
 *
 * \param usart The USART module.
 * \param opt The RS232 configuration option.
 */
void usart_init_spi(USART_t *usart, const usart_spi_options_t *opt)
{
	usart->UBRR = 0;

	usart_enable_module_clock(usart);
	usart_set_mode(usart, USART_CMODE_MSPI_gc);

	if (opt->spimode == 1 || opt->spimode == 3) {
		usart->UCSRnC |= USART_UCPHA_bm;
	} else {
		usart->UCSRnC &= ~USART_UCPHA_bm;
	}
	if (opt->spimode == 2 || opt->spimode == 3) {
		usart->UCSRnC |= USART_UCPOL_bm;
	} else {
		usart->UCSRnC &= ~USART_UCPOL_bm;
	}	
	
	if (opt->data_order) {
		usart->UCSRnC |= USART_DORD_bm;
	} else {
		usart->UCSRnC &= ~USART_DORD_bm;
	}
	
	
	usart_spi_set_baudrate(usart, opt->baudrate,
			sysclk_get_source_clock_hz());
	usart_tx_enable(usart);
	usart_rx_enable(usart);
}
Esempio n. 2
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/**
 * \brief Initialize USART in RS232 mode.
 *
 * This function initializes the USART module in RS232 mode using the
 * usart_rs232_options_t configuration structure and CPU frequency.
 *
 * \param usart The USART module.
 * \param opt The RS232 configuration option.
 */
void usart_init_rs232(USART_t *usart, const usart_rs232_options_t *opt)
{
    usart_enable_module_clock(usart);
    usart_set_mode(usart, USART_CMODE_ASYNCHRONOUS_gc);
    usart_format_set(usart, opt->charlength, opt->paritytype,
                     opt->stopbits);
    usart_set_baudrate(usart, opt->baudrate, sysclk_get_per_hz());
    usart_tx_enable(usart);
    usart_rx_enable(usart);
}
Esempio n. 3
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/**
 * \brief Initialize USART in SPI master mode.
 *
 * This function initializes the USART module in SPI master mode using the
 * usart_spi_options_t configuration structure and CPU frequency.
 *
 * \param usart The USART module.
 * \param opt The RS232 configuration option.
 */
void usart_init_spi(USART_t *usart, const usart_spi_options_t *opt)
{
	usart->UBRR = 0;

	usart_enable_module_clock(usart);
	usart_set_mode(usart, USART_CMODE_MSPI_gc);
	port_pin_t sck_pin;

#ifdef USARTA0
	if ((uintptr_t)usart == (uintptr_t)&UCSR0A) {
		sck_pin = IOPORT_CREATE_PIN(PORTE, 2);
		ioport_configure_port_pin(ioport_pin_to_port(sck_pin),
				ioport_pin_to_mask(sck_pin),
				IOPORT_DIR_OUTPUT | IOPORT_INIT_HIGH );
	}
#endif
#ifdef USARTA1
	if ((uintptr_t)usart == (uintptr_t)&UCSR1A) {
		sck_pin = IOPORT_CREATE_PIN(PORTD, 5);
		ioport_configure_port_pin(ioport_pin_to_port(sck_pin),
				ioport_pin_to_mask(sck_pin),
				IOPORT_DIR_OUTPUT | IOPORT_INIT_HIGH );
	}
#endif
	if (opt->spimode == 1 || opt->spimode == 3) {
		usart->UCSRnC |= USART_UCPHA_bm;
	} else {
		usart->UCSRnC &= ~USART_UCPHA_bm;
	}
	if (opt->spimode == 2 || opt->spimode == 3) {
		usart->UCSRnC |= USART_UCPOL_bm;
	} else {
		usart->UCSRnC &= ~USART_UCPOL_bm;
	}	
	
	if (opt->data_order) {
		usart->UCSRnC |= USART_DORD_bm;
	} else {
		usart->UCSRnC &= ~USART_DORD_bm;
	}
	
	
	usart_spi_set_baudrate(usart, opt->baudrate,
			sysclk_get_source_clock_hz());
	usart_tx_enable(usart);
	usart_rx_enable(usart);
}
Esempio n. 4
0
/**
 * \brief Initialize USART in SPI master mode.
 *
 * This function initializes the USART module in SPI master mode using the
 * usart_spi_options_t configuration structure and CPU frequency.
 *
 * \param usart The USART module.
 * \param opt The RS232 configuration option.
 */
void usart_init_spi(USART_t *usart, const usart_spi_options_t *opt)
{
    usart_enable_module_clock(usart);
    usart_set_mode(usart, USART_CMODE_MSPI_gc);
    port_pin_t sck_pin;

    if (opt->spimode == 1 || opt->spimode == 3) {
        //! \todo Fix when UCPHA_bm is added to header file.
        usart->CTRLC |= 0x02;
    } else {
        //! \todo Fix when UCPHA_bm is added to header file.
        usart->CTRLC &= ~0x02;
    }

    // configure Clock polarity using INVEN bit of the correct SCK I/O port
    if (opt->spimode == 2 || opt->spimode == 3) {
#ifdef USARTC0
        if ((uint16_t)usart == (uint16_t)&USARTC0) {
            sck_pin = IOPORT_CREATE_PIN(PORTC, 1);
            ioport_configure_port_pin(ioport_pin_to_port(sck_pin),
                                      ioport_pin_to_mask(sck_pin),
                                      IOPORT_DIR_OUTPUT | IOPORT_INIT_HIGH | IOPORT_INV_ENABLED);
        }
#endif
#ifdef USARTC1
        if ((uint16_t)usart == (uint16_t)&USARTC1) {
            sck_pin = IOPORT_CREATE_PIN(PORTC, 5);
            ioport_configure_port_pin(ioport_pin_to_port(sck_pin),
                                      ioport_pin_to_mask(sck_pin),
                                      IOPORT_DIR_OUTPUT | IOPORT_INIT_HIGH | IOPORT_INV_ENABLED);
        }
#endif
#ifdef USARTD0
        if ((uint16_t)usart == (uint16_t)&USARTD0) {
            sck_pin = IOPORT_CREATE_PIN(PORTD, 1);
            ioport_configure_port_pin(ioport_pin_to_port(sck_pin),
                                      ioport_pin_to_mask(sck_pin),
                                      IOPORT_DIR_OUTPUT | IOPORT_INIT_HIGH | IOPORT_INV_ENABLED);
        }
#endif
#ifdef USARTD1
        if ((uint16_t)usart == (uint16_t)&USARTD1) {
            sck_pin = IOPORT_CREATE_PIN(PORTD, 5);
            ioport_configure_port_pin(ioport_pin_to_port(sck_pin),
                                      ioport_pin_to_mask(sck_pin),
                                      IOPORT_DIR_OUTPUT | IOPORT_INIT_HIGH | IOPORT_INV_ENABLED);
        }
#endif
#ifdef USARTE0
        if ((uint16_t)usart == (uint16_t)&USARTE0) {
            sck_pin = IOPORT_CREATE_PIN(PORTE, 1);
            ioport_configure_port_pin(ioport_pin_to_port(sck_pin),
                                      ioport_pin_to_mask(sck_pin),
                                      IOPORT_DIR_OUTPUT | IOPORT_INIT_HIGH | IOPORT_INV_ENABLED);
        }
#endif
#ifdef USARTE1
        if ((uint16_t)usart == (uint16_t)&USARTE1) {
            sck_pin = IOPORT_CREATE_PIN(PORTE, 5);
            ioport_configure_port_pin(ioport_pin_to_port(sck_pin),
                                      ioport_pin_to_mask(sck_pin),
                                      IOPORT_DIR_OUTPUT | IOPORT_INIT_HIGH | IOPORT_INV_ENABLED);
        }
#endif
#ifdef USARTF0
        if ((uint16_t)usart == (uint16_t)&USARTF0) {
            sck_pin = IOPORT_CREATE_PIN(PORTF, 1);
            ioport_configure_port_pin(ioport_pin_to_port(sck_pin),
                                      ioport_pin_to_mask(sck_pin),
                                      IOPORT_DIR_OUTPUT | IOPORT_INIT_HIGH | IOPORT_INV_ENABLED);
        }
#endif
#ifdef USARTF1
        if ((uint16_t)usart == (uint16_t)&USARTF1) {
            sck_pin = IOPORT_CREATE_PIN(PORTF, 5);
            ioport_configure_port_pin(ioport_pin_to_port(sck_pin),
                                      ioport_pin_to_mask(sck_pin),
                                      IOPORT_DIR_OUTPUT | IOPORT_INIT_HIGH | IOPORT_INV_ENABLED);
        }
#endif
    }

    usart_spi_set_baudrate(usart, opt->baudrate, sysclk_get_per_hz());
    usart_tx_enable(usart);
    usart_rx_enable(usart);
}