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 */
/*
* sending one bit
*/
void SkI2cSndBit(
SK_IOC IoC, /* I/O Context */
SK_U8 Bit) /* Bit to send */
{
I2C_DATA_OUT(IoC);
if (Bit) {
I2C_DATA_HIGH(IoC);
} else {
I2C_DATA_LOW(IoC);
}
SkDgWaitTime(IoC, NS2BCLK(T_DATA_IN_SETUP));
I2C_CLK_HIGH(IoC);
SkDgWaitTime(IoC, NS2BCLK(T_CLK_HIGH));
I2C_CLK_LOW(IoC);
} /* SkI2cSndBit*/
/*
* Signal a start to the I2C Bus.
*
* A start is signaled when data goes to low in a high clock cycle.
*
* Ends with Clock Low.
*
* Status: not tested
*/
void SkI2cStart(
SK_IOC IoC) /* I/O Context */
{
/* Init data and Clock to output lines */
/* Set Data high */
I2C_DATA_OUT(IoC);
I2C_DATA_HIGH(IoC);
/* Set Clock high */
I2C_CLK_HIGH(IoC);
SkDgWaitTime(IoC, NS2BCLK(T_START_SETUP));
/* Set Data Low */
I2C_DATA_LOW(IoC);
SkDgWaitTime(IoC, NS2BCLK(T_START_HOLD));
/* Clock low without Data to Input */
I2C_START_COND(IoC);
SkDgWaitTime(IoC, NS2BCLK(T_CLK_LOW));
} /* SkI2cStart */