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diplomarbeit/Tester/SW/lib/Drivers/bus.c
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Matthias 373a8c32b2 Added Software projects 
git-svn-id: file:///srv/dev-disk-by-uuid-17e88007-4d0c-45e0-8757-cacfcc458630/repositories/svn/Diplomarbeit@55 9fe90eed-be63-e94b-8204-d34ff4c2ff93
2008-12-23 10:34:08 +00:00

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9.3 KiB
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/* ---------------------------------------------------------------------------
* bus.c - v0.1 (c) 2007 Micro-key bv
* ---------------------------------------------------------------------------
* Micro-key bv
* Industrieweg 28, 9804 TG Noordhorn
* Postbus 92, 9800 AB Zuidhorn
* The Netherlands
* Tel: +31 594 503020
* Fax: +31 594 505825
* Email: support@microkey.nl
* Web: www.microkey.nl
* ---------------------------------------------------------------------------
* Description: RS-485 bus driver
* ---------------------------------------------------------------------------
* Version(s): 0.1, 28-11-2007, fvds.
* Creation.
* ---------------------------------------------------------------------------
*/
/* ---------------------------------------------------------------------------
* System include files
* ---------------------------------------------------------------------------
*/
#include <stdio.h>
#include <stdlib.h>
/* ---------------------------------------------------------------------------
* Application include files
* ---------------------------------------------------------------------------
*/
#include "LPC23xx.h"
#include "types.h"
#include "bus.h"
#include "armVIC.h"
#include "uart2.h"
#include "uart3.h"
/* ---------------------------------------------------------------------------
* Local constant and macro definitions
* ---------------------------------------------------------------------------
*/
#define NR_OF_BUSPORTS 2
// \MARK NEW PINSETTINGS FOR TESTER (2)
// \TODO WATCH OUT PATCHES FOR UART2
#if (PINSET_TESTER == 2)
#define UB2_DE_PINSEL_REG PINSEL2
#define UB2_DE_PINSEL (0UL<<4) /* PINSEL8 Value for GPIO (P2.2) */
#define UB2_DE_PINMASK (3UL<<4) /* PINSEL8 Mask for GPIO (P2.2) */
#define UB2_RE_PINSEL_REG PINSEL2
#define UB2_RE_PINSEL (0UL<<6) /* PINSEL8 Value for GPIO (P2.3) */
#define UB2_RE_PINMASK (3UL<<6) /* PINSEL8 Mask for GPIO (P2.3) */
#define UB3_DE_PINSEL_REG PINSEL2
#define UB3_DE_PINSEL (0UL<<10) /* PINSEL8 Value for GPIO (P2.5) */
#define UB3_DE_PINMASK (3UL<<10) /* PINSEL8 Mask for GPIO (P2.5) */
#define UB3_RE_PINSEL_REG PINSEL2
#define UB3_RE_PINSEL (0UL<<12) /* PINSEL8 Value for GPIO (P2.6) */
#define UB3_RE_PINMASK (3UL<<12) /* PINSEL8 Mask for GPIO (P2.6) */
#else
#define UB2_DE_PINSEL_REG PINSEL3
#define UB2_DE_PINSEL (0UL<<0) /* PINSEL3 Value for GPIO */
#define UB2_DE_PINMASK (3UL<<0) /* PINSEL3 Mask for GPIO */
#define UB2_RE_PINSEL_REG PINSEL3
#define UB2_RE_PINSEL (0UL<<2) /* PINSEL3 Value for GPIO */
#define UB2_RE_PINMASK (3UL<<2) /* PINSEL3 Mask for GPIO */
#define UB3_DE_PINSEL_REG PINSEL3
#define UB3_DE_PINSEL (0UL<<4) /* PINSEL3 Value for GPIO */
#define UB3_DE_PINMASK (3UL<<4) /* PINSEL3 Mask for GPIO */
#define UB3_RE_PINSEL_REG PINSEL3
#define UB3_RE_PINSEL (0UL<<6) /* PINSEL3 Value for GPIO */
#define UB3_RE_PINMASK (3UL<<6) /* PINSEL3 Mask for GPIO */
#endif
// \MARK NEW PINSETTINGS FOR TESTER (2)
#if (PINSET_TESTER == 2)
#define UB2_REN_DE_DIR_REG FIO2DIR
#define UB2_REN_DE_SET_REG FIO2SET
#define UB2_REN_DE_CLR_REG FIO2CLR
#else
#define UB2_REN_DE_DIR_REG FIO1DIR
#define UB2_REN_DE_SET_REG FIO1SET
#define UB2_REN_DE_CLR_REG FIO1CLR
#endif
// \MARK NEW PINSETTINGS FOR TESTER (2)
#if (PINSET_TESTER == 2)
#define UB2_REN_BIT BIT(3)
#define UB2_DE_BIT BIT(2)
#else
#define UB2_REN_BIT BIT(17)
#define UB2_DE_BIT BIT(16)
#endif
#define UB2_REN_DE_BITS (UB2_REN_BIT | UB2_DE_BIT)
#define UB2_TX_MODE (UB2_REN_DE_SET_REG = UB2_REN_DE_BITS)
#define UB2_RX_MODE (UB2_REN_DE_CLR_REG = UB2_REN_DE_BITS)
#define UB2_LOOPBACK_MODE
// \MARK NEW PINSETTINGS FOR TESTER (2)
#if (PINSET_TESTER == 2)
#define UB3_REN_DE_DIR_REG FIO2DIR
#define UB3_REN_DE_SET_REG FIO2SET
#define UB3_REN_DE_CLR_REG FIO2CLR
#else
#define UB3_REN_DE_DIR_REG FIO1DIR
#define UB3_REN_DE_SET_REG FIO1SET
#define UB3_REN_DE_CLR_REG FIO1CLR
#endif
// \MARK NEW PINSETTINGS FOR TESTER (2)
#if (PINSET_TESTER == 2)
#define UB3_REN_BIT BIT(6)
#define UB3_DE_BIT BIT(5)
#else
#define UB3_REN_BIT BIT(19)
#define UB3_DE_BIT BIT(18)
#endif
#define UB3_REN_DE_BITS (UB3_REN_BIT | UB3_DE_BIT)
#define UB3_TX_MODE (UB3_REN_DE_SET_REG = UB3_REN_DE_BITS)
#define UB3_RX_MODE (UB3_REN_DE_CLR_REG = UB3_REN_DE_BITS)
#define UB3_LOOPBACK_MODE
/* ---------------------------------------------------------------------------
* Global variable definitions
* ---------------------------------------------------------------------------
*/
/* ---------------------------------------------------------------------------
* Local variable definitions
* ---------------------------------------------------------------------------
*/
/* ---------------------------------------------------------------------------
* Local function definitions
* ---------------------------------------------------------------------------
*/
void onUart2TxFinished();
void onUart3TxFinished();
/** \brief Initialize of serial interface.*/
void busInit (
t_bus_devices device
)
{
SCS |= (1UL<<0); // set GPIOM in SCS for fast IO
switch( device )
{
case(BUS1):
// set EN/DE pins for BUS0
UB2_DE_PINSEL_REG = ( UB2_DE_PINSEL_REG & ~UB2_DE_PINMASK ) | UB2_DE_PINSEL;
UB2_RE_PINSEL_REG = ( UB2_RE_PINSEL_REG & ~UB2_RE_PINMASK ) | UB2_RE_PINSEL;
// set EN/DE pin as output and in Receive mode
UB2_REN_DE_DIR_REG |= UB2_REN_DE_BITS;
UB2_RX_MODE;
uart2Init( B38400, UART_8N1, UART_FIFO_8 ); // \TODO BAUDRATE
uart2SubscribeTxFinished( onUart2TxFinished );
break;
case(BUS2):
// set EN/DE pins for BUS1
UB3_DE_PINSEL_REG = ( UB3_DE_PINSEL_REG & ~UB3_DE_PINMASK ) | UB3_DE_PINSEL;
UB3_RE_PINSEL_REG = ( UB3_RE_PINSEL_REG & ~UB3_RE_PINMASK ) | UB3_RE_PINSEL;
// set EN/DE pin as output and in Receive mode
UB3_REN_DE_DIR_REG |= UB3_REN_DE_BITS;
UB3_RX_MODE;
uart3Init( B38400, UART_8N1, UART_FIFO_8 ); // \TODO BAUDRATE
uart3SubscribeTxFinished( onUart3TxFinished );
break;
}
}
/** \brief Write data of a certain length to a serial port.*/
void busWrite (
t_bus_devices device,
UINT16 length, /**< Lengh of data in bytes */
UINT8 *data /**< Pointer to data */
)
{
switch( device )
{
case(BUS1):
UB2_TX_MODE;
uart2Write( (char *)data, length);
break;
case(BUS2):
UB3_TX_MODE;
uart3Write( (char *)data, length);
break;
}
}
/** \brief Reads data from serial port.
\retval Length of received data in bytes*/
UINT16 busRead (
t_bus_devices device,
UINT8 * data /**< Pointer to data */
)
{
UINT16 bytesReceived = 0;
BOOLEAN receivedSomething;
do
{
receivedSomething = busGet( device, &(data[bytesReceived]));
if (receivedSomething)
bytesReceived++;
} while(receivedSomething);
return bytesReceived;
}
/** \brief Get byte from serial port.
\retval bool Returns true if there was data */
BOOLEAN busGet(
t_bus_devices device,
UINT8 * byte /**< Pointer to byte to return data*/
)
{
int receivedChar = -1;
switch( device )
{
case(BUS1):
receivedChar = uart2Getch();
break;
case(BUS2):
receivedChar = uart3Getch();
break;
}
if (receivedChar >= 0)
{
*byte = (UINT8)receivedChar;
return TRUE;
}
else
{
return FALSE;
}
}
/** \brief Send byte to serial port. */
void busPut(
t_bus_devices device,
UINT8 value /**< Byte to send*/
)
{
switch( device )
{
case(BUS1):
UB2_TX_MODE;
uart2Putch( value );
break;
case(BUS2):
UB3_TX_MODE;
uart3Putch( value );
break;
}
}
/** \brief Flush serial port buffers. */
void busFlush(
t_bus_devices device
)
{
switch( device )
{
case(BUS1):
uart2TxFlush( );
break;
case(BUS2):
uart3TxFlush( );
break;
}
}
/** \brief Check if receive buffers is empty.
\retval bool Returns true if recieve buffer is empty */
BOOLEAN busEmpty(
t_bus_devices device
)
{
switch( device )
{
case(BUS1):
return (uart2RxEmpty( ) != 0);
break;
case(BUS2):
return (uart3RxEmpty( ) != 0);
break;
}
return FALSE;
}
void onUart2TxFinished()
{
// After all characters are send, put back in Receiver mode
UB2_RX_MODE;
}
void onUart3TxFinished()
{
// After all characters are send, put back in Receiver mode
UB3_RX_MODE;
}
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