/*
** ISR to handler i2c interrupts
*/
void I2CCodecIsr(void)
{
unsigned int intCode = 0;
unsigned int sysIntNum = 0;
/* Get interrupt vector code */
intCode = I2CInterruptVectorGet(savedBase);
if(SOC_I2C_0_REGS == savedBase)
{
#ifdef _TMS320C6X
sysIntNum = SYS_INT_I2C0_INT;
#else
sysIntNum = SYS_INT_I2CINT0;
#endif
}
else
{
intCode = 0;
}
while(intCode!=0)
{
/* Clear status of interrupt */
#ifdef _TMS320C6X
IntEventClear(sysIntNum);
#else
IntSystemStatusClear(sysIntNum);
#endif
if (intCode == I2C_INTCODE_TX_READY)
{
I2CMasterDataPut(savedBase, slaveData[dataIdx]);
dataIdx++;
}
if(intCode == I2C_INTCODE_RX_READY)
{
slaveData[dataIdx] = I2CMasterDataGet(savedBase);
dataIdx++;
}
if (intCode == I2C_INTCODE_STOP)
{
/* Disable transmit data ready and receive data read interupt */
I2CMasterIntDisableEx(savedBase, I2C_INT_TRANSMIT_READY
| I2C_INT_DATA_READY);
txCompFlag = 0;
}
intCode = I2CInterruptVectorGet(savedBase);
}
}
/*
** This function will read/write data from/to PMIC through I2C bus.
*/
void I2CPMICInteract(void)
{
volatile unsigned int intCode = 0;
/* Get interrupt vector code */
intCode = I2CInterruptVectorGet(SOC_I2C_0_REGS);
while(intCode!=0)
{
/* Clear status of interrupt */
IntSystemStatusClear(SYS_INT_I2CINT0);
if (intCode == I2C_INTCODE_TX_READY)
{
/* Put data to data transmit register of i2c */
I2CMasterDataPut(SOC_I2C_0_REGS, dataToPmic[count++]);
}
if(intCode == I2C_INTCODE_RX_READY)
{
/* Receive data from data receive register */
dataFromSlave[rCount] = I2CMasterDataGet(SOC_I2C_0_REGS);
}
if (intCode == I2C_INTCODE_STOP)
{
/* Disable transmit data ready and receive data read interupt */
I2CMasterIntDisableEx(SOC_I2C_0_REGS,I2C_INT_TRANSMIT_READY|
I2C_INT_DATA_READY);
flag = 0;
}
if (intCode == I2C_INTCODE_NACK)
{
I2CMasterIntDisableEx(SOC_I2C_0_REGS, I2C_INT_TRANSMIT_READY |
I2C_INT_DATA_READY |
I2C_INT_NO_ACK |
I2C_INT_STOP_CONDITION);
/* Generate a STOP */
I2CMasterStop(SOC_I2C_0_REGS);
I2CStatusClear(SOC_I2C_0_REGS, I2C_CLEAR_STOP_CONDITION);
/* Clear interrupt at AINTC, if we missed any, in case of error */
flag = 0;
}
intCode = I2CInterruptVectorGet(SOC_I2C_0_REGS);
}
}
/*
** ISR to handler i2c interrupts
*/
static void I2C0Isr(void)
{
volatile unsigned int intCode = 0;
/* Get interrupt vector code */
intCode = I2CInterruptVectorGet(SOC_I2C_0_REGS);
while(intCode!=0)
{
/* Clear status of interrupt */
#ifdef _TMS320C6X
IntEventClear(SYS_INT_I2C0_INT);
#else
IntSystemStatusClear(15);
#endif
if (intCode == I2C_INTCODE_TX_READY)
{
I2CMasterDataPut(SOC_I2C_0_REGS, slaveData[dataIdx]);
dataIdx++;
}
if(intCode == I2C_INTCODE_RX_READY)
{
slaveData[dataIdx] = I2CMasterDataGet(SOC_I2C_0_REGS);
dataIdx++;
}
if (intCode == I2C_INTCODE_STOP)
{
I2CMasterIntDisableEx(SOC_I2C_0_REGS, I2C_INT_TRANSMIT_READY |
I2C_INT_DATA_READY |
I2C_INT_NO_ACK |
I2C_INT_STOP_CONDITION);
txCompFlag = 0;
}
if (intCode == I2C_INTCODE_NACK)
{
I2CMasterIntDisableEx(SOC_I2C_0_REGS, I2C_INT_TRANSMIT_READY |
I2C_INT_DATA_READY |
I2C_INT_NO_ACK |
I2C_INT_STOP_CONDITION);
/* Generate a STOP */
I2CMasterStop(SOC_I2C_0_REGS);
I2CStatusClear(SOC_I2C_0_REGS, I2C_CLEAR_STOP_CONDITION);
/* Clear interrupt at AINTC, if we missed any, in case of error */
#ifdef _TMS320C6X
IntEventClear(SYS_INT_I2C0_INT);
#else
IntSystemStatusClear(15);
#endif
txCompFlag = 0;
}
if (I2CMasterIntStatus(SOC_I2C_0_REGS) & I2C_ICSTR_NACKSNT)
{
I2CMasterIntDisableEx(SOC_I2C_0_REGS, I2C_INT_TRANSMIT_READY |
I2C_INT_DATA_READY |
I2C_INT_NO_ACK |
I2C_INT_STOP_CONDITION);
/* Generate a STOP */
I2CMasterStop(SOC_I2C_0_REGS);
I2CStatusClear(SOC_I2C_0_REGS, (I2C_CLEAR_NO_ACK_SENT |
I2C_CLEAR_STOP_CONDITION));
/* Clear interrupt at AINTC, if we missed any, in case of error */
#ifdef _TMS320C6X
IntEventClear(SYS_INT_I2C0_INT);
#else
IntSystemStatusClear(15);
#endif
txCompFlag = 0;
}
intCode = I2CInterruptVectorGet(SOC_I2C_0_REGS);
}
}
