usart.h

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#ifndef USART_H_
#define USART_H_

#include "board.h"

#define USART_PORT USB_USART_PORT
#define USART_MODULE USB_USART_MODULE

#define USART_RX_PIN_bp USB_USART_RX_PIN_bp
#define USART_RX_PIN_bm USB_USART_RX_PIN_bm

#define USART_TX_PIN_bp USB_USART_TX_PIN_bp
#define USART_TX_PIN_bm USB_USART_TX_PIN_bm

#define USART_DRE_vect USB_USART_DRE_vect
#define USART_RXC_vect USB_USART_RXC_vect

#define USART_BSEL_gc 11
#define USART_BSCALE_gc -7
#define USART_CONFIG (USART_CHSIZE_8BIT_gc | USART_PMODE_DISABLED_gc)

#ifdef __cplusplus
extern "C"
{
#endif

void usart_init(void);

uint8_t usart_receive_complete(void);

uint8_t usart_receive(void);

uint8_t usart_data_register_empty(void);

void usart_transmit(uint8_t data);

#ifdef __cplusplus
}
#endif

#endif /* USART_H_ */