slaveputsi2c1.c

来自「基於 c51/8051 的 nand Flash Memory HY27US08」· C语言 代码 · 共 36 行

#if defined(__PIC24F__)
#include <p24Fxxxx.h>
#endif
#include <i2c.h>

/**************************************************************************
*    Function Name:  SlaveputsI2C1
*    Description:    This routine is used to write out a string to the 
*                    I2C bus.If write collision occurs,-3 is sent.If 
*                    string is written and null char reached, 0 is returned.                 
*    Parameters:     unsigned char * : wrptr
*    Return Value:   unsigned int
****************************************************************************/


#ifdef _I2C_V2_1

unsigned int SlaveputsI2C1(unsigned char * wrptr)
{
    I2C1CONbits.STREN = 1;            /* SCL clock stretch enable bit */
    while(*wrptr)                /* transmit data until null char */
    {
        SlaveputcI2C1(*wrptr++);     /* Send a byte */
    while(I2C1STATbits.TBF);         /* wait till the transmit buffer is clear */ 
        while(!IFS1bits.SI2C1IF);    /* Wait till the ACK from master is received */
	    IFS1bits.SI2C1IF = 0;        /* Clear Flag */
    }
    return 0;                        /* null char was reached */
}



#else
#warning "Does not build on this target"
#endif