/*
* write a buff to I2C
* - i2c_device: i2c device pointer
* - dev_addr: device address
* - data: data buff
* - len: data lenght
*/
uint8 suli_i2c_write(void * i2c_device, uint8 dev_addr, uint8 *data, uint8 len)
{
vAHI_SiMasterWriteSlaveAddr(dev_addr, FALSE);
// bSetSTA, bSetSTO, bSetRD, bSetWR, bSetAckCtrl, bSetIACK);
bAHI_SiMasterSetCmdReg(TRUE, FALSE, FALSE, TRUE, E_AHI_SI_SEND_ACK, E_AHI_SI_NO_IRQ_ACK);
while(bAHI_SiMasterPollTransferInProgress()); //Waitforanindicationofsuccess
int i;
uint8 *old = data;
for(i = 0; i < len; i++)
{
vAHI_SiMasterWriteData8(*data++);
if(i == (len - 1)) //should send stop
{
bAHI_SiMasterSetCmdReg(FALSE, TRUE, FALSE, TRUE, E_AHI_SI_SEND_ACK, E_AHI_SI_NO_IRQ_ACK);
} else
{
bAHI_SiMasterSetCmdReg(FALSE, FALSE, FALSE, TRUE, E_AHI_SI_SEND_ACK, E_AHI_SI_NO_IRQ_ACK);
}
while(bAHI_SiMasterPollTransferInProgress()); //Waitforanindicationofsuccess
if(bAHI_SiMasterCheckRxNack())
{
bAHI_SiMasterSetCmdReg(FALSE, TRUE, FALSE, FALSE, E_AHI_SI_SEND_ACK, E_AHI_SI_NO_IRQ_ACK);
break;
}
}
return data - old;
}
bool_t bSMBusSequentialRead_NACK(uint8 u8Address, uint8 u8Length, uint8* pu8Data)
{
/* Send address with write bit set */
vAHI_SiMasterWriteSlaveAddr(u8Address, !E_AHI_SI_SLAVE_RW_SET);
vAHI_SiMasterSetCmdReg(E_AHI_SI_START_BIT,
E_AHI_SI_NO_STOP_BIT,
E_AHI_SI_NO_SLAVE_READ,
E_AHI_SI_SLAVE_WRITE,
E_AHI_SI_SEND_ACK,
E_AHI_SI_NO_IRQ_ACK);
if(!bSMBusWait()) return(FALSE);
while(u8Length > 0){
u8Length--;
/*
* If its the last byte to be sent, send with
* stop sequence set
*/
if(u8Length == 0){
vAHI_SiMasterSetCmdReg(E_AHI_SI_NO_START_BIT,
E_AHI_SI_STOP_BIT,
E_AHI_SI_SLAVE_READ,
E_AHI_SI_NO_SLAVE_WRITE,
E_AHI_SI_SEND_NACK,
E_AHI_SI_NO_IRQ_ACK);
} else {
vAHI_SiMasterSetCmdReg(E_AHI_SI_NO_START_BIT,
E_AHI_SI_NO_STOP_BIT,
E_AHI_SI_SLAVE_READ,
E_AHI_SI_NO_SLAVE_WRITE,
E_AHI_SI_SEND_NACK,
E_AHI_SI_NO_IRQ_ACK);
}
while(bAHI_SiMasterPollTransferInProgress()); /* busy wait */
*pu8Data++ = u8AHI_SiMasterReadData8();
}
return(TRUE);
}
/*
* read a buff to I2C
* - i2c_device: i2c device pointer
* - dev_addr: device address
* - data: data buff
* - len: data lenght
* return
*/
uint8 suli_i2c_read(void *i2c_device, uint8 dev_addr, uint8 *buff, uint8 len)
{
vAHI_SiMasterWriteSlaveAddr(dev_addr, TRUE);
// bSetSTA, bSetSTO, bSetRD, bSetWR, bSetAckCtrl, bSetIACK);
bAHI_SiMasterSetCmdReg(TRUE, FALSE, FALSE, TRUE, E_AHI_SI_SEND_ACK, E_AHI_SI_NO_IRQ_ACK);
while(bAHI_SiMasterPollTransferInProgress()); //Waitforanindicationofsuccess
int i;
uint8 *old = buff;
for(i = 0; i < len; i++)
{
if(i == (len - 1)) //should send stop, nack
{
bAHI_SiMasterSetCmdReg(FALSE, TRUE, TRUE, FALSE, E_AHI_SI_SEND_NACK, E_AHI_SI_NO_IRQ_ACK);
} else
{
bAHI_SiMasterSetCmdReg(FALSE, FALSE, TRUE, FALSE, E_AHI_SI_SEND_ACK, E_AHI_SI_NO_IRQ_ACK);
}
while(bAHI_SiMasterPollTransferInProgress()); //Waitforanindicationofsuccess
*buff++ = u8AHI_SiMasterReadData8();
}
return buff - old;
}
/** Active wait .
* @return Status of wait (timeout or succeed)
*/
bool_t IdleI2C() {
#ifdef I2CDEV_SERIAL_DEBUG
i2cdev_debug_depth++; int z; for(z=0;z<i2cdev_debug_depth;z++) DBG_vPrintf(TRACE_APP, "\t"); DBG_vPrintf(TRACE_APP, "IdleI2C\r\n");
#endif
volatile uint32 i;
bool_t check_status;
for (i = 0; (check_status = bAHI_SiMasterPollTransferInProgress()) && (i < 1000); i++) {
// NOP
}
#ifdef I2CDEV_SERIAL_DEBUG
i2cdev_debug_depth--;
#endif
return check_status;
}
PRIVATE bool_t bSMBusWait(void)
{
while(bAHI_SiMasterPollTransferInProgress()); /* busy wait */
if (bAHI_SiMasterPollArbitrationLost() | bAHI_SiMasterCheckRxNack()) {
/* release bus & abort */
vAHI_SiMasterSetCmdReg(E_AHI_SI_NO_START_BIT,
E_AHI_SI_STOP_BIT,
E_AHI_SI_NO_SLAVE_READ,
E_AHI_SI_SLAVE_WRITE,
E_AHI_SI_SEND_ACK,
E_AHI_SI_NO_IRQ_ACK);
return(FALSE);
}
return(TRUE);
}
