/*******************************************************************************
* Function Name: I2C_Enable
********************************************************************************
*
* Summary:
* Enables I2C operations.
*
* Parameters:
* None.
*
* Return:
* None.
*
* Global variables:
* None.
*
*******************************************************************************/
void I2C_Enable(void)
{
#if (I2C_FF_IMPLEMENTED)
uint8 intState;
/* Enable power to block */
intState = CyEnterCriticalSection();
I2C_ACT_PWRMGR_REG |= I2C_ACT_PWR_EN;
I2C_STBY_PWRMGR_REG |= I2C_STBY_PWR_EN;
CyExitCriticalSection(intState);
#else
#if (I2C_MODE_SLAVE_ENABLED)
/* Enable bit counter */
uint8 intState = CyEnterCriticalSection();
I2C_COUNTER_AUX_CTL_REG |= I2C_CNT7_ENABLE;
CyExitCriticalSection(intState);
#endif /* (I2C_MODE_SLAVE_ENABLED) */
/* Enable slave or master bits */
I2C_CFG_REG |= I2C_ENABLE_MS;
#endif /* (I2C_FF_IMPLEMENTED) */
#if (I2C_TIMEOUT_ENABLED)
I2C_TimeoutEnable();
#endif /* (I2C_TIMEOUT_ENABLED) */
}
/*******************************************************************************
* Function Name: I2C_Enable
********************************************************************************
*
* Summary:
* Enables I2C operations.
*
* Parameters:
* None
*
* Return:
* None
*
* Global variables:
* None
*
*******************************************************************************/
void I2C_Enable(void)
{
#if(I2C_FF_IMPLEMENTED)
uint8 enableInterrupts;
/* Enable power to I2C FF block */
enableInterrupts = CyEnterCriticalSection();
I2C_ACT_PWRMGR_REG |= I2C_ACT_PWR_EN;
I2C_STBY_PWRMGR_REG |= I2C_STBY_PWR_EN;
CyExitCriticalSection(enableInterrupts);
#else
#if(I2C_MODE_SLAVE_ENABLED)
uint8 enableInterrupts;
#endif /* (I2C_MODE_SLAVE_ENABLED) */
#if(I2C_MODE_SLAVE_ENABLED)
/* Enable slave bit counter */
enableInterrupts = CyEnterCriticalSection();
I2C_COUNTER_AUX_CTL_REG |= I2C_CNT7_ENABLE; /* aux_ctl */
CyExitCriticalSection(enableInterrupts);
#endif /* (I2C_MODE_SLAVE_ENABLED) */
I2C_CFG_REG |= I2C_ENABLE_MS;
#endif /* (I2C_FF_IMPLEMENTED) */
#if(I2C_TIMEOUT_ENABLED)
I2C_TimeoutEnable();
#endif /* (I2C_TIMEOUT_ENABLED) */
}
/*******************************************************************************
* Function Name: I2C_Wakeup
********************************************************************************
*
* Summary:
* Wakeup on address match enabled: enables I2C Master (if was enabled before go
* to sleep) and disables I2C backup regulator.
* Wakeup on address match disabled: Restores I2C configuration and
* non-retention register values. Restores Active mode power template bits or
* clock gating as appropriate.
* The I2C interrupt remains disabled after function call.
*
* Parameters:
* None
*
* Return:
* None
*
* Reentrant:
* No
*
*******************************************************************************/
void I2C_Wakeup(void)
{
I2C_RestoreConfig(); /* Restore I2C register settings */
/* Restore component enable state */
if(0u != I2C_backup.enableState)
{
I2C_Enable();
I2C_EnableInt();
}
else
{
#if(I2C_TIMEOUT_ENABLED)
I2C_TimeoutEnable();
#endif /* (I2C_TIMEOUT_ENABLED) */
}
}
