/*---------------------------------------------------------------------------*
* Routine: LPC1768_Serial_Configure
*---------------------------------------------------------------------------*
* Description:
* Link the serial port to a pair of callback routines and an
* associated callback workspace. The callbacks are called when
* a byte is received and when the transmit buffer becomes empty.
* Inputs:
* void *aWorkspace -- Serial port workspace
* void *aCallbackWorkspace -- Callback's workspace
* HAL_Serial_Callback_Received_Byte aReceivedByteCallback
* -- Callback routine for received bytes
* HAL_Serial_Callback_Transmit_Empty aTransmitEmptyCallback
* -- Callback routine for transmit empty
* Outputs:
* T_uezError -- Error code
*---------------------------------------------------------------------------*/
T_uezError LPC1768_Serial_Configure(
void *aWorkspace,
void *aCallbackWorkspace,
HAL_Serial_Callback_Received_Byte aReceivedByteCallback,
HAL_Serial_Callback_Transmit_Empty aTransmitEmptyCallback)
{
T_Serial_LPC1768_Workspace *p = (T_Serial_LPC1768_Workspace *)aWorkspace;
const T_Serial_LPC1768_SerialInfo *p_info = p->iInfo;
TUInt32 divider ;
InterruptDisable(p->iInfo->iInterruptChannel);
// Ensure power is on to the part
// PCONP |= p->iPowerBit;
// Configure the PCLK divider here to be CCLK/1 on UART0, 1/
// TBD: UART3 and 4 should be CCLK/1!
SC->PCLKSEL0 = (SC->PCLKSEL0 & ~(3<<6)) | (1<<6);
SC->PCLKSEL0 = (SC->PCLKSEL0 & ~(3<<8)) | (1<<8);
SC->PCLKSEL1 = (SC->PCLKSEL1 & ~(3<<16)) | (1<<16);
SC->PCLKSEL1 = (SC->PCLKSEL1 & ~(3<<18)) | (1<<18);
p->iReceivedByteFunc = aReceivedByteCallback;
p->iTransmitEmptyFunc = aTransmitEmptyCallback;
p->iCallbackWorkspace = aCallbackWorkspace;
divider = BAUD_DIVIDER(SERIAL_PORTS_DEFAULT_BAUD);
// Set the FIFO enable bit in the FCR register. This bit must be set for
// proper UART operation.
p_info->iUART->u3.FCR = 7; // FCRFE|RFR|TFR
// Set baudrate
p_info->iUART->LCR |= 0x80;
p_info->iUART->u1.DLL = divider & 0x00ff;
p_info->iUART->u2.DLM = (divider >> 8) & 0x00ff;
p_info->iUART->LCR &= ~0x80;
// Set default mode (8 bits, 1 stop bit, no parity)
p_info->iUART->LCR = 0x03;
//Enable UART0 interrupts
p_info->iUART->u2.IER = 0x03; // Interrupts and TX and RX
InterruptRegister(
p_info->iInterruptChannel,
p_info->iISR,
p_info->iPriority,
p->iHAL->iInterface.iName);
//TBD: For now, leave serial port deactivated
// InterruptEnable(p_info->iInterruptChannel);
return UEZ_ERROR_NONE;
}
/*---------------------------------------------------------------------------*
* Routine: LPC2478_Serial_Configure
*---------------------------------------------------------------------------*
* Description:
* Link the serial port to a pair of callback routines and an
* associated callback workspace. The callbacks are called when
* a byte is received and when the transmit buffer becomes empty.
* Inputs:
* void *aWorkspace -- Serial port workspace
* void *aCallbackWorkspace -- Callback's workspace
* HAL_Serial_Callback_Received_Byte aReceivedByteCallback
* -- Callback routine for received bytes
* HAL_Serial_Callback_Transmit_Empty aTransmitEmptyCallback
* -- Callback routine for transmit empty
* Outputs:
* T_uezError -- Error code
*---------------------------------------------------------------------------*/
T_uezError LPC2478_Serial_Configure(
void *aWorkspace,
void *aCallbackWorkspace,
HAL_Serial_Callback_Received_Byte aReceivedByteCallback,
HAL_Serial_Callback_Transmit_Empty aTransmitEmptyCallback)
{
T_Serial_LPC2478_Workspace *p = (T_Serial_LPC2478_Workspace *)aWorkspace;
const T_Serial_LPC2478_SerialInfo *p_info = p->iInfo;
TUInt32 divider ;
InterruptDisable(p->iInfo->iInterruptChannel);
// Ensure power is on to the part
LPC2478PowerOn(1UL << p->iInfo->iPowerBitIndex);
p->iReceivedByteFunc = aReceivedByteCallback;
p->iTransmitEmptyFunc = aTransmitEmptyCallback;
p->iCallbackWorkspace = aCallbackWorkspace;
divider = PROCESSOR_OSCILLATOR_FREQUENCY;
divider = BAUD_DIVIDER(SERIAL_PORTS_DEFAULT_BAUD);
// Set the FIFO enable bit in the FCR register. This bit must be set for
// proper UART operation.
p_info->iUART->reg08.FCR = 7; // FCRFE|RFR|TFR
// Set baudrate
p_info->iUART->LCR |= 0x80;
p_info->iUART->reg00.DLL = divider & 0x00ff;
p_info->iUART->reg04.DLM = (divider >> 8) & 0x00ff;
p_info->iUART->LCR &= ~0x80;
// Set default mode (8 bits, 1 stop bit, no parity)
p_info->iUART->LCR = 0x03;
//Enable UART0 interrupts
p_info->iUART->reg04.IER = 0x03; // Interrupts and TX and RX
InterruptRegister(
p_info->iInterruptChannel,
p_info->iISR,
p_info->iPriority,
p->iHAL->iInterface.iName);
//TBD: For now, leave serial port deactivated
// InterruptEnable(p_info->iInterruptChannel);
return UEZ_ERROR_NONE;
}
/*---------------------------------------------------------------------------*
* Routine: LPC1768_Serial_SetSerialSettings
*---------------------------------------------------------------------------*
* Description:
* Configure the serial port settings
* Inputs:
* void *aWorkspace -- Serial port workspace
* T_Serial_Settings *aSettings -- Settings to use for serial port
* Outputs:
* T_uezError -- Error code
*---------------------------------------------------------------------------*/
T_uezError LPC1768_Serial_SetSerialSettings(
void *aWorkspace,
T_Serial_Settings *aSettings)
{
T_Serial_LPC1768_Workspace *p = (T_Serial_LPC1768_Workspace *)aWorkspace;
const T_Serial_LPC1768_SerialInfo *p_info = p->iInfo;
TUInt32 divider ;
// Record these settings
p->iSettings = *aSettings;
//TBD: Do the other settings!
// Change the baud rate
divider = BAUD_DIVIDER(aSettings->iBaud);
p_info->iUART->LCR |= 0x80;
p_info->iUART->u1.DLL = divider & 0x00ff;
p_info->iUART->u2.DLM = (divider >> 8) & 0x00ff;
p_info->iUART->LCR &= ~0x80;
return UEZ_ERROR_NONE;
}
/*---------------------------------------------------------------------------*
* Routine: LPC17xx_40xx_Serial_SetSerialSettings
*---------------------------------------------------------------------------*
* Description:
* Configure the serial port settings
* Inputs:
* void *aWorkspace -- Serial port workspace
* T_Serial_Settings *aSettings -- Settings to use for serial port
* Outputs:
* T_uezError -- Error code
*---------------------------------------------------------------------------*/
T_uezError LPC17xx_40xx_Serial_SetSerialSettings(
void *aWorkspace,
T_Serial_Settings *aSettings)
{
T_Serial_LPC17xx_40xx_Workspace *p = (T_Serial_LPC17xx_40xx_Workspace *)aWorkspace;
const T_Serial_LPC17xx_40xx_SerialInfo *p_info = p->iInfo;
TUInt32 divider;
// Record these settings
p->iSettings = *aSettings;
//TBD: Do the other settings!
// Change the baud rate
divider = BAUD_DIVIDER(aSettings->iBaud);
p_info->iUART->LCR |= 0x80;
p_info->iUART->reg00.DLL = divider & 0x00ff;
p_info->iUART->reg04.DLM = (divider >> 8) & 0x00ff;
p_info->iUART->LCR &= 0x00;
switch (aSettings->iParity) {
case SERIAL_PARITY_ODD:
p_info->iUART->LCR |= ((1 << 3) | (0 << 4));
break;
case SERIAL_PARITY_EVEN:
p_info->iUART->LCR |= ((1 << 3) | (1 << 4));
break;
case SERIAL_PARITY_MARK:
p_info->iUART->LCR |= ((1 << 3) | (2 << 4));
break;
case SERIAL_PARITY_SPACE:
p_info->iUART->LCR |= ((1 << 3) | (3 << 4));
break;
case SERIAL_PARITY_NONE:
p_info->iUART->LCR |= ((0 << 3) | (0 << 4));
break;
default:
return UEZ_ERROR_INVALID_PARAMETER;
}
switch (aSettings->iStopBit) {
case SERIAL_STOP_BITS_1:
p_info->iUART->LCR |= (0 << 2);
break;
case SERIAL_STOP_BITS_2:
p_info->iUART->LCR |= (1 << 2);
break;
case SERIAL_STOP_BITS_1_POINT_5:
return UEZ_ERROR_NOT_SUPPORTED;
default:
return UEZ_ERROR_INVALID_PARAMETER;
}
switch (aSettings->iWordLength) {
case 5:
p_info->iUART->LCR |= (0 << 0);
break;
case 6:
p_info->iUART->LCR |= (1 << 0);
break;
case 7:
p_info->iUART->LCR |= (2 << 0);
break;
case 8:
p_info->iUART->LCR |= (3 << 0);
break;
default:
return UEZ_ERROR_NOT_SUPPORTED;
}
return UEZ_ERROR_NONE;
}
