/*
** ===================================================================
** Method : DrvI2c0_CheckBus (component I2C_LDD)
**
** Description :
** This method returns the status of the bus. If the START
** condition has been detected, the method returns LDD_I2C_BUSY.
** If the STOP condition has been detected, the method returns
** LDD_I2C_IDLE.
** Parameters :
** NAME - DESCRIPTION
** * DeviceDataPtr - Device data structure
** pointer returned by <Init> method.
** * BusStatePtr - Pointer to a variable,
** where value of status is stored.
** Returns :
** --- - Error code, possible codes:
** ERR_OK - OK
** ERR_DISABLED - Device is disabled
** ERR_SPEED - This device does not work in
** the active clock configuration
** ===================================================================
*/
LDD_TError DrvI2c0_CheckBus(LDD_TDeviceData *DeviceDataPtr, LDD_I2C_TBusState *BusStatePtr)
{
DrvI2c0_TDeviceData *DeviceDataPrv = (DrvI2c0_TDeviceData *)DeviceDataPtr;
(void)DeviceDataPrv; /* Suppress unused variable warning if needed */
*BusStatePtr = (LDD_I2C_TBusState)((I2C_PDD_GetBusStatus(I2C0_BASE_PTR) == I2C_PDD_BUS_BUSY)?LDD_I2C_BUSY:LDD_I2C_IDLE); /* Return value of Busy bit in status register */
return ERR_OK;
}
uint_8 i2c_master_send_block (i2c_buf_t *buf, uint_8 *ptr, uint_32 length) {
/*
* this function sends a block of data out of the i2c port as master, it also ensures that a
* stop condition is sent at the end
*/
if (!length) {
return(E_OK); // nothing to do
}
if (length > I2C_BUF_MAX) {
return(E_BOUNDS);
}
if ((I2C_PDD_GetBusStatus(I2C0_BASE_PTR) == I2C_PDD_BUS_BUSY) || /* Is the bus busy? */ \
((buf->flags & MASTER_IN_PROGRES) != 0x00U) || (buf->tx_req != 0x00U)) {
return(E_BUSY);
}
//
// begin critical section
//
buf->flags |= MASTER_IN_PROGRES; /* Set flag "busy" */
memcpy(buf->tx_buf, ptr, length);
buf->rx_idx = 0;
buf->tx_idx = 0;
buf->rx_req = 0;
buf->tx_req = length; /* Set the counter of output bufer's content */
buf->sendstop = TRUE; /* Set generating stop condition */
I2C_PDD_SetTransmitMode(I2C0_BASE_PTR, I2C_PDD_TX_DIRECTION); /* Set TX mode */
if (I2C_PDD_GetMasterMode(I2C0_BASE_PTR) == I2C_PDD_MASTER_MODE) { /* Is device in master mode? */
I2C_PDD_RepeatStart(I2C0_BASE_PTR); /* If yes then repeat start cycle generated */
}
else {
I2C_PDD_SetMasterMode(I2C0_BASE_PTR, I2C_PDD_MASTER_MODE); /* If no then start signal generated */
}
if ((buf->flags & ADDR_7) != 0x00) { /* Is 7-bit addressing set ? */
buf->flags |= (ADDR_COMPLETE | REP_ADDR_COMPLETE); /* Only one byte of address will be sent 7-bit address mode*/
I2C_PDD_WriteDataReg(I2C0_BASE_PTR, buf->slave_addr_low); /* Send slave address */
}
else if ((buf->flags & ADDR_10) != 0x00) { /* Is 10-bit addressing set ? */
buf->flags &= ~(ADDR_COMPLETE | REP_ADDR_COMPLETE); /* Second byte of address will be sent later */
I2C_PDD_WriteDataReg(I2C0_BASE_PTR, buf->slave_addr_high); /* Send slave address - high byte*/
}
else if ((buf->flags & GENERAL_CALL) != 0x00) { /* Is general call command required ? */
buf->flags |= ADDR_COMPLETE; /* Only one byte of address will be sent in general call address mode*/
I2C_PDD_WriteDataReg(I2C0_BASE_PTR, 0x00); /* Send general call address */
}
//
// end critical section
//
return(E_OK);
}
/* ===================================================================*/
LDD_TError IntI2cLdd1_MasterReceiveBlock(LDD_TDeviceData *DeviceDataPtr, LDD_TData *BufferPtr, LDD_I2C_TSize Size, LDD_I2C_TSendStop SendStop)
{
IntI2cLdd1_TDeviceData *DeviceDataPrv = (IntI2cLdd1_TDeviceData *)DeviceDataPtr;
if (Size == 0x00U) { /* Test variable Size on zero */
return ERR_OK; /* If zero then OK */
}
if (SendStop == LDD_I2C_NO_SEND_STOP) { /* Test variable SendStop on supported value */
return ERR_PARAM_MODE; /* If not supported value then error */
}
if ((DeviceDataPrv->SerFlag & GENERAL_CALL) != 0x00U) { /* Is the general call flag set (SelectSlaveDevice - address type is general call) ? */
return ERR_NOTAVAIL; /* It is not possible to receive data - Call SelectSlaveDevice method */
}
if (DeviceDataPrv->SendStop == LDD_I2C_SEND_STOP) {
if ((I2C_PDD_GetBusStatus(I2C0_BASE_PTR) == I2C_PDD_BUS_BUSY) || /* Is the bus busy? */ \
((DeviceDataPrv->SerFlag & MASTER_IN_PROGRES) != 0x00U) || \
(DeviceDataPrv->InpLenM != 0x00U)) {
return ERR_BUSY; /* If yes then error */
}
} else {
if(((DeviceDataPrv->SerFlag & MASTER_IN_PROGRES) != 0x00U) || /* Is the bus busy? */ \
(DeviceDataPrv->InpLenM != 0x00U)) {
return ERR_BUSY; /* If yes then error */
}
}
/* {Default RTOS Adapter} Critical section begin, general PE function is used */
EnterCritical();
DeviceDataPrv->SerFlag |= MASTER_IN_PROGRES; /* Set flag "busy" */
DeviceDataPrv->InpPtrM = (uint8_t *)BufferPtr; /* Save pointer to data for reception */
DeviceDataPrv->InpByteMNum = 0x00U; /* Clear data number */
DeviceDataPrv->InpLenM = Size; /* Set the counter of input bufer's content */
DeviceDataPrv->SendStop = SendStop; /* Set generating stop condition */
I2C_PDD_SetTransmitMode(I2C0_BASE_PTR, I2C_PDD_TX_DIRECTION); /* Set TX mode */
if (I2C_PDD_GetMasterMode(I2C0_BASE_PTR) == I2C_PDD_MASTER_MODE) { /* Is device in master mode? */
I2C_PDD_RepeatStart(I2C0_BASE_PTR); /* If yes then repeat start cycle generated */
} else {
I2C_PDD_SetMasterMode(I2C0_BASE_PTR, I2C_PDD_MASTER_MODE); /* If no then start signal generated */
}
if ((DeviceDataPrv->SerFlag & ADDR_7) != 0x00U) { /* Is 7-bit addressing set ? */
DeviceDataPrv->SerFlag |= (ADDR_COMPLETE|REP_ADDR_COMPLETE); /* Only one byte of address will be sent 7-bit address mode*/
I2C_PDD_WriteDataReg(I2C0_BASE_PTR, (uint8_t)(DeviceDataPrv->SlaveAddr | 0x01U)); /* Send slave address */
} else {
if ((DeviceDataPrv->SerFlag & ADDR_10) != 0x00U) { /* Is 10-bit addressing set ? */
DeviceDataPrv->SerFlag &= (uint8_t)~(ADDR_COMPLETE | REP_ADDR_COMPLETE); /* Second byte of address will be sent later */
I2C_PDD_WriteDataReg(I2C0_BASE_PTR, DeviceDataPrv->SlaveAddrHigh); /* Send slave address - high byte */
}
}
/* {Default RTOS Adapter} Critical section end, general PE function is used */
ExitCritical();
return ERR_OK; /* OK */
}
/* ===================================================================*/
LDD_TError IntI2cLdd1_MasterSendBlock(LDD_TDeviceData *DeviceDataPtr, LDD_TData *BufferPtr, LDD_I2C_TSize Size, LDD_I2C_TSendStop SendStop)
{
IntI2cLdd1_TDeviceData *DeviceDataPrv = (IntI2cLdd1_TDeviceData *)DeviceDataPtr;
if (Size == 0x00U) { /* Test variable Size on zero */
return ERR_OK; /* If zero then OK */
}
if (DeviceDataPrv->SendStop == LDD_I2C_SEND_STOP) {
if ((I2C_PDD_GetBusStatus(I2C0_BASE_PTR) == I2C_PDD_BUS_BUSY) || /* Is the bus busy? */ \
((DeviceDataPrv->SerFlag & MASTER_IN_PROGRES) != 0x00U) || \
(DeviceDataPrv->OutLenM != 0x00U)) {
return ERR_BUSY; /* If yes then error */
}
} else {
if (((DeviceDataPrv->SerFlag & MASTER_IN_PROGRES) != 0x00U) || /* Is the bus busy? */ \
(DeviceDataPrv->OutLenM != 0x00U)) {
return ERR_BUSY; /* If yes then error */
}
}
/* {Default RTOS Adapter} Critical section begin, general PE function is used */
EnterCritical();
DeviceDataPrv->SerFlag |= MASTER_IN_PROGRES; /* Set flag "busy" */
DeviceDataPrv->OutPtrM = (uint8_t *)BufferPtr; /* Save pointer to data for transmitting */
DeviceDataPrv->OutByteMNum = 0x00U; /* Set data counter */
DeviceDataPrv->OutLenM = Size; /* Set the counter of output bufer's content */
DeviceDataPrv->SendStop = SendStop; /* Set generating stop condition */
I2C_PDD_SetTransmitMode(I2C0_BASE_PTR, I2C_PDD_TX_DIRECTION); /* Set TX mode */
if (I2C_PDD_GetMasterMode(I2C0_BASE_PTR) == I2C_PDD_MASTER_MODE) { /* Is device in master mode? */
I2C_PDD_RepeatStart(I2C0_BASE_PTR); /* If yes then repeat start cycle generated */
} else {
I2C_PDD_SetMasterMode(I2C0_BASE_PTR, I2C_PDD_MASTER_MODE); /* If no then start signal generated */
}
if ((DeviceDataPrv->SerFlag & ADDR_7) != 0x00U) { /* Is 7-bit addressing set ? */
DeviceDataPrv->SerFlag |= (ADDR_COMPLETE | REP_ADDR_COMPLETE); /* Only one byte of address will be sent 7-bit address mode*/
I2C_PDD_WriteDataReg(I2C0_BASE_PTR, DeviceDataPrv->SlaveAddr); /* Send slave address */
} else {
if ((DeviceDataPrv->SerFlag & ADDR_10) != 0x00U) { /* Is 10-bit addressing set ? */
DeviceDataPrv->SerFlag &= (uint8_t)~(ADDR_COMPLETE | REP_ADDR_COMPLETE); /* Second byte of address will be sent later */
I2C_PDD_WriteDataReg(I2C0_BASE_PTR, DeviceDataPrv->SlaveAddrHigh); /* Send slave address - high byte */
} else {
if ((DeviceDataPrv->SerFlag & GENERAL_CALL) != 0x00U) { /* Is general call command required ? */
DeviceDataPrv->SerFlag |= ADDR_COMPLETE; /* Only one byte of address will be sent in general call address mode*/
I2C_PDD_WriteDataReg(I2C0_BASE_PTR, 0x00U); /* Send general call address */
}
}
}
/* {Default RTOS Adapter} Critical section end, general PE function is used */
ExitCritical();
return ERR_OK; /* OK */
}
/* ===================================================================*/
LDD_TError I2C2_MasterReceiveBlock(LDD_TDeviceData *DeviceDataPtr, LDD_TData *BufferPtr, LDD_I2C_TSize Size, LDD_I2C_TSendStop SendStop)
{
I2C2_TDeviceData *DeviceDataPrv = (I2C2_TDeviceData *)DeviceDataPtr;
if (Size == 0x00U) { /* Test variable Size on zero */
return ERR_OK; /* If zero then OK */
}
if (SendStop == LDD_I2C_NO_SEND_STOP) { /* Test variable SendStop on supported value */
return ERR_PARAM_MODE; /* If not supported value then error */
}
if (DeviceDataPrv->SendStop == LDD_I2C_SEND_STOP) {
if ((I2C_PDD_GetBusStatus(I2C0_BASE_PTR) == I2C_PDD_BUS_BUSY) || /* Is the bus busy? */ \
((DeviceDataPrv->SerFlag & MASTER_IN_PROGRES) != 0x00U) || \
(DeviceDataPrv->InpLenM != 0x00U)) {
return ERR_BUSY; /* If yes then error */
}
} else {
if(((DeviceDataPrv->SerFlag & MASTER_IN_PROGRES) != 0x00U) || /* Is the bus busy? */ \
(DeviceDataPrv->InpLenM != 0x00U)) {
return ERR_BUSY; /* If yes then error */
}
}
/* {Default RTOS Adapter} Critical section begin, general PE function is used */
EnterCritical();
DeviceDataPrv->SerFlag |= MASTER_IN_PROGRES; /* Set flag "busy" */
DeviceDataPrv->InpPtrM = (uint8_t *)BufferPtr; /* Save pointer to data for reception */
DeviceDataPrv->InpLenM = Size; /* Set the counter of input bufer's content */
DeviceDataPrv->SendStop = SendStop; /* Set generating stop condition */
I2C_PDD_SetTransmitMode(I2C0_BASE_PTR, I2C_PDD_TX_DIRECTION); /* Set TX mode */
if (I2C_PDD_GetMasterMode(I2C0_BASE_PTR) == I2C_PDD_MASTER_MODE) { /* Is device in master mode? */
I2C_PDD_RepeatStart(I2C0_BASE_PTR); /* If yes then repeat start cycle generated */
} else {
I2C_PDD_SetMasterMode(I2C0_BASE_PTR, I2C_PDD_MASTER_MODE); /* If no then start signal generated */
}
I2C_PDD_WriteDataReg(I2C0_BASE_PTR, 0x3BU); /* Send slave address */
/* {Default RTOS Adapter} Critical section end, general PE function is used */
ExitCritical();
return ERR_OK; /* OK */
}
/* ===================================================================*/
LDD_TError CI2C1_MasterSendBlock(LDD_TDeviceData *DeviceDataPtr, LDD_TData *BufferPtr, LDD_I2C_TSize Size, LDD_I2C_TSendStop SendStop)
{
CI2C1_TDeviceData *DeviceDataPrv = (CI2C1_TDeviceData *)DeviceDataPtr;
if (Size == 0x00U) { /* Test variable Size on zero */
return ERR_OK; /* If zero then OK */
}
if (DeviceDataPrv->SendStop == LDD_I2C_SEND_STOP) {
if ((I2C_PDD_GetBusStatus(I2C0_BASE_PTR) == I2C_PDD_BUS_BUSY) || /* Is the bus busy? */ \
((DeviceDataPrv->SerFlag & MASTER_IN_PROGRES) != 0x00U) || \
(DeviceDataPrv->OutLenM != 0x00U)) {
return ERR_BUSY; /* If yes then error */
}
} else {
if (((DeviceDataPrv->SerFlag & MASTER_IN_PROGRES) != 0x00U) || /* Is the bus busy? */ \
(DeviceDataPrv->OutLenM != 0x00U)) {
return ERR_BUSY; /* If yes then error */
}
}
/* {MQXLite RTOS Adapter} Critical section begin (RTOS function call is defined by MQXLite RTOS Adapter property) */
_int_disable();
DeviceDataPrv->SerFlag |= MASTER_IN_PROGRES; /* Set flag "busy" */
DeviceDataPrv->OutPtrM = (uint8_t *)BufferPtr; /* Save pointer to data for transmitting */
DeviceDataPrv->OutLenM = Size; /* Set the counter of output bufer's content */
DeviceDataPrv->SendStop = SendStop; /* Set generating stop condition */
I2C_PDD_SetTransmitMode(I2C0_BASE_PTR, I2C_PDD_TX_DIRECTION); /* Set TX mode */
if (I2C_PDD_GetMasterMode(I2C0_BASE_PTR) == I2C_PDD_MASTER_MODE) { /* Is device in master mode? */
I2C_PDD_RepeatStart(I2C0_BASE_PTR); /* If yes then repeat start cycle generated */
} else {
I2C_PDD_SetMasterMode(I2C0_BASE_PTR, I2C_PDD_MASTER_MODE); /* If no then start signal generated */
}
I2C_PDD_WriteDataReg(I2C0_BASE_PTR, 0x00U); /* Send slave address */
/* {MQXLite RTOS Adapter} Critical section ends (RTOS function call is defined by MQXLite RTOS Adapter property) */
_int_enable();
return ERR_OK; /* OK */
}
