34 lines
1021 B
C
34 lines
1021 B
C
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#ifndef _BY_SERIAL_H__
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#define _BY_SERIAL_H__
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#define BY_SERIAL_DEV_STATUS_STDBY 0x00
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#define BY_SERIAL_DEV_STATUS_ERROR 0xFF
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#define BY_SERIAL_DEV_STATUS_OPEND 0x01
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typedef struct by_serial_t {
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int fd;
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char dev_name_str[40];
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int dev_name_len;
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int dev_status;
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} by_serial_t;
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/* Open serial device. */
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extern int by_serial_init(by_serial_t *serial_port, const char *dev_name);
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/* Set baudrate. */
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extern int by_serial_set_baudrate(by_serial_t *serial_port, int baudrate);
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/* Set databits, stopbits, parity. */
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extern int by_serial_set_parity(by_serial_t *serial_port, int databits, int stopbits, char parity);
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/* Write buff of specified length, return wrote length. */
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extern int by_serial_write(by_serial_t *serial_port, const char *buff, const int len);
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/* Read buff of specified length, return read length. */
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extern int by_serial_read(by_serial_t *serial_port, char *buff, const int len);
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/* Return used serial buffer len. */
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extern int by_serial_get_used_buffer_len(by_serial_t *serial_port);
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#endif
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