void SkI2cStop(
SK_IOC IoC) /* I/O Context */
{
/* Init data and Clock to output lines */
/* Set Data low */
I2C_DATA_OUT(IoC);
I2C_DATA_LOW(IoC);
SkDgWaitTime(IoC, NS2BCLK(T_CLK_2_DATA_OUT));
/* Set Clock high */
I2C_CLK_HIGH(IoC);
SkDgWaitTime(IoC, NS2BCLK(T_STOP_SETUP));
/*
* Set Data High: Do it by setting the Data Line to Input.
* Because of a pull up resistor the Data Line
* floods to high.
*/
I2C_DATA_IN(IoC);
/*
* When I2C activity is stopped
* o DATA should be set to input and
* o CLOCK should be set to high!
*/
SkDgWaitTime(IoC, NS2BCLK(T_BUS_IDLE));
} /* SkI2cStop */
/*
* Receive just one bit via the I2C bus.
*
* Note: Clock must be set to LOW before calling this function.
*
* Returns The received bit.
*/
int SkI2cRcvBit(
SK_IOC IoC) /* I/O Context */
{
int Bit;
SK_U8 I2cSwCtrl;
/* Init data as input line */
I2C_DATA_IN(IoC);
SkDgWaitTime(IoC, NS2BCLK(T_CLK_2_DATA_OUT));
I2C_CLK_HIGH(IoC);
SkDgWaitTime(IoC, NS2BCLK(T_CLK_HIGH));
SK_I2C_GET_SW(IoC, &I2cSwCtrl);
if (I2cSwCtrl & I2C_DATA) {
Bit = 1;
} else {
Bit = 0;
}
I2C_CLK_LOW(IoC);
SkDgWaitTime(IoC, NS2BCLK(T_CLK_LOW-T_CLK_2_DATA_OUT));
return(Bit);
} /* SkI2cRcvBit */