/*******************************************************************************
* Function Name: I2C_Init
********************************************************************************
*
* Summary:
* Initializes I2C registers with initial values provided from customizer.
*
* Parameters:
* None
*
* Return:
* None
*
* Global variables:
* None
*
* Reentrant:
* No
*
*******************************************************************************/
void I2C_Init(void)
{
#if(I2C_FF_IMPLEMENTED)
I2C_CFG_REG = I2C_DEFAULT_CFG;
I2C_XCFG_REG = I2C_DEFAULT_XCFG;
#if(CY_PSOC5A)
I2C_CLKDIV_REG = LO8(I2C_DEFAULT_DIVIDE_FACTOR);
#else
I2C_CLKDIV1_REG = LO8(I2C_DEFAULT_DIVIDE_FACTOR);
I2C_CLKDIV2_REG = HI8(I2C_DEFAULT_DIVIDE_FACTOR);
#endif /* (CY_PSOC5A) */
#else
uint8 enableInterrupts;
I2C_CFG_REG = I2C_DEFAULT_CFG; /* control */
I2C_INT_MASK_REG = I2C_DEFAULT_INT_MASK; /* int_mask */
/* Enable interrupts from block */
enableInterrupts = CyEnterCriticalSection();
I2C_INT_ENABLE_REG |= I2C_INTR_ENABLE; /* aux_ctl */
CyExitCriticalSection(enableInterrupts);
#if(I2C_MODE_MASTER_ENABLED)
I2C_MCLK_PRD_REG = I2C_DEFAULT_MCLK_PRD;
I2C_MCLK_CMP_REG = I2C_DEFAULT_MCLK_CMP;
#endif /* (I2C_MODE_MASTER_ENABLED) */
#if(I2C_MODE_SLAVE_ENABLED)
I2C_PERIOD_REG = I2C_DEFAULT_PERIOD;
#endif /* (I2C_MODE_SLAVE_ENABLED) */
#endif /* (I2C_FF_IMPLEMENTED) */
#if(I2C_TIMEOUT_ENABLED)
I2C_TimeoutInit();
#endif /* (I2C_TIMEOUT_ENABLED) */
/* Disable Interrupt and set vector and priority */
CyIntDisable (I2C_ISR_NUMBER);
CyIntSetPriority(I2C_ISR_NUMBER, I2C_ISR_PRIORITY);
#if(I2C_INTERN_I2C_INTR_HANDLER)
(void) CyIntSetVector(I2C_ISR_NUMBER, &I2C_ISR);
#endif /* (I2C_INTERN_I2C_INTR_HANDLER) */
/* Put state machine in idle state */
I2C_state = I2C_SM_IDLE;
#if(I2C_MODE_SLAVE_ENABLED)
/* Reset status and buffers index */
I2C_SlaveClearReadBuf();
I2C_SlaveClearWriteBuf();
I2C_slStatus = 0u; /* Reset slave status */
/* Set default address */
I2C_SlaveSetAddress(I2C_DEFAULT_ADDR);
#endif /* (I2C_MODE_SLAVE_ENABLED) */
#if(I2C_MODE_MASTER_ENABLED)
/* Reset status and buffers index */
I2C_MasterClearReadBuf();
I2C_MasterClearWriteBuf();
(void) I2C_MasterClearStatus();
#endif /* (I2C_MODE_MASTER_ENABLED) */
}
/*******************************************************************************
* Function Name: I2C_Init
********************************************************************************
*
* Summary:
* Initializes I2C registers with initial values provided from customizer.
*
* Parameters:
* None.
*
* Return:
* None.
*
* Global variables:
* None.
*
* Reentrant:
* No.
*
*******************************************************************************/
void I2C_Init(void)
{
#if (I2C_FF_IMPLEMENTED)
/* Configure fixed function block */
I2C_CFG_REG = I2C_DEFAULT_CFG;
I2C_XCFG_REG = I2C_DEFAULT_XCFG;
I2C_ADDR_REG = I2C_DEFAULT_ADDR;
I2C_CLKDIV1_REG = LO8(I2C_DEFAULT_DIVIDE_FACTOR);
I2C_CLKDIV2_REG = HI8(I2C_DEFAULT_DIVIDE_FACTOR);
#else
uint8 intState;
/* Configure control and interrupt sources */
I2C_CFG_REG = I2C_DEFAULT_CFG;
I2C_INT_MASK_REG = I2C_DEFAULT_INT_MASK;
/* Enable interrupt generation in status */
intState = CyEnterCriticalSection();
I2C_INT_ENABLE_REG |= I2C_INTR_ENABLE;
CyExitCriticalSection(intState);
/* Configure bit counter */
#if (I2C_MODE_SLAVE_ENABLED)
I2C_PERIOD_REG = I2C_DEFAULT_PERIOD;
#endif /* (I2C_MODE_SLAVE_ENABLED) */
/* Configure clock generator */
#if (I2C_MODE_MASTER_ENABLED)
I2C_MCLK_PRD_REG = I2C_DEFAULT_MCLK_PRD;
I2C_MCLK_CMP_REG = I2C_DEFAULT_MCLK_CMP;
#endif /* (I2C_MODE_MASTER_ENABLED) */
#endif /* (I2C_FF_IMPLEMENTED) */
#if (I2C_TIMEOUT_ENABLED)
I2C_TimeoutInit();
#endif /* (I2C_TIMEOUT_ENABLED) */
/* Configure internal interrupt */
CyIntDisable (I2C_ISR_NUMBER);
CyIntSetPriority(I2C_ISR_NUMBER, I2C_ISR_PRIORITY);
#if (I2C_INTERN_I2C_INTR_HANDLER)
(void) CyIntSetVector(I2C_ISR_NUMBER, &I2C_ISR);
#endif /* (I2C_INTERN_I2C_INTR_HANDLER) */
/* Set FSM to default state */
I2C_state = I2C_SM_IDLE;
#if (I2C_MODE_SLAVE_ENABLED)
/* Clear status and buffers index */
I2C_slStatus = 0u;
I2C_slRdBufIndex = 0u;
I2C_slWrBufIndex = 0u;
/* Configure matched address */
I2C_SlaveSetAddress(I2C_DEFAULT_ADDR);
#endif /* (I2C_MODE_SLAVE_ENABLED) */
#if (I2C_MODE_MASTER_ENABLED)
/* Clear status and buffers index */
I2C_mstrStatus = 0u;
I2C_mstrRdBufIndex = 0u;
I2C_mstrWrBufIndex = 0u;
#endif /* (I2C_MODE_MASTER_ENABLED) */
}
