Description: Under the agreement, the two-wire bus is idle is high and when to communicate, SDA SCL high, from high to low the start of communication (void iic_start (void)), after the transmission of data, SDA only when SCL is lowwhen will change, data in SCL rising crawl while the stop bit is in high SCL SDA from low to high (void iic_stop (void)).
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VIIC_C51.c
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