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Update to V4.3.0 as described in http://www.FreeRTOS.org/History.txt

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Richard Barry 2007-06-05 09:53:14 +00:00
parent 67d0d1ec3b
commit 017740b75a
352 changed files with 71690 additions and 71398 deletions
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1486
Demo/lwIP_MCF5235_GCC/system/init.c
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File diff suppressed because it is too large Load diff

292
Demo/lwIP_MCF5235_GCC/system/newlib.c
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@ -1,149 +1,149 @@
/*
FreeRTOS MCF5235 port - Copyright (C) 2006 Christian Walter.
This file is part of the FreeRTOS distribution.
FreeRTOS is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
FreeRTOS is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with FreeRTOS; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
A special exception to the GPL can be applied should you wish to distribute
a combined work that includes FreeRTOS, without being obliged to provide
the source code for any proprietary components. See the licensing section
of http://www.FreeRTOS.org for full details of how and when the exception
can be applied.
***************************************************************************
See http://www.FreeRTOS.org for documentation, latest information, license
and contact details. Please ensure to read the configuration and relevant
/*
FreeRTOS MCF5235 port - Copyright (C) 2006 Christian Walter.
This file is part of the FreeRTOS distribution.
FreeRTOS is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
FreeRTOS is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with FreeRTOS; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
A special exception to the GPL can be applied should you wish to distribute
a combined work that includes FreeRTOS, without being obliged to provide
the source code for any proprietary components. See the licensing section
of http://www.FreeRTOS.org for full details of how and when the exception
can be applied.
***************************************************************************
See http://www.FreeRTOS.org for documentation, latest information, license
and contact details. Please ensure to read the configuration and relevant
port sections of the online documentation.
Also see http://www.SafeRTOS.com for an IEC 61508 compliant version along
with commercial development and support options.
***************************************************************************
*/
/* ------------------------ System includes ------------------------------- */
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <errno.h>
/* ------------------------ FreeRTOS includes ----------------------------- */
#include <FreeRTOS.h>
#include <serial.h>
/* ------------------------ Prototypes ------------------------------------ */
void vSerialPutStringNOISR( xComPortHandle pxPort,
const signed portCHAR * const pcString,
unsigned portSHORT usStringLength );
/* ------------------------ Start implementation -------------------------- */
void
_exit( int status )
{
asm volatile ( "halt" );
for( ;; );
}
pid_t
getpid( void )
{
return 0;
}
int
kill( pid_t pid, int sig )
{
_exit( 0 );
}
int
close( int fd )
{
return 0;
}
int
fstat( int fd, struct stat *buf )
{
buf->st_mode = S_IFCHR;
buf->st_blksize = 0;
return 0;
}
ssize_t
write( int fd, const void *buf, size_t nbytes )
{
ssize_t res = nbytes;
extern xComPortHandle xSTDComPort;
switch ( fd )
{
case STDERR_FILENO:
vSerialPutStringNOISR( xSTDComPort,
( const signed portCHAR * const )buf,
( unsigned portSHORT )nbytes );
break;
case STDOUT_FILENO:
vSerialPutString( xSTDComPort,
( const signed portCHAR * const)buf,
( unsigned portSHORT )nbytes );
break;
default:
errno = EIO;
res = -1;
break;
}
return res;
}
int
read( int fd, void *buf, size_t nbytes )
{
switch ( fd )
{
default:
errno = EIO;
return -1;
}
}
int
isatty( int fd )
{
return 0;
}
off_t
lseek( int fd, off_t offset, int whence )
{
errno = EIO;
return ( off_t ) - 1;
}
extern char _end[];
char *heap_ptr;
void *
sbrk( ptrdiff_t nbytes )
{
char *base;
if( !heap_ptr )
heap_ptr = ( char * )&_end;
base = heap_ptr;
heap_ptr += nbytes;
return base;
}
with commercial development and support options.
***************************************************************************
*/
/* ------------------------ System includes ------------------------------- */
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <errno.h>
/* ------------------------ FreeRTOS includes ----------------------------- */
#include <FreeRTOS.h>
#include <serial.h>
/* ------------------------ Prototypes ------------------------------------ */
void vSerialPutStringNOISR( xComPortHandle pxPort,
const signed portCHAR * const pcString,
unsigned portSHORT usStringLength );
/* ------------------------ Start implementation -------------------------- */
void
_exit( int status )
{
asm volatile ( "halt" );
for( ;; );
}
pid_t
getpid( void )
{
return 0;
}
int
kill( pid_t pid, int sig )
{
_exit( 0 );
}
int
close( int fd )
{
return 0;
}
int
fstat( int fd, struct stat *buf )
{
buf->st_mode = S_IFCHR;
buf->st_blksize = 0;
return 0;
}
ssize_t
write( int fd, const void *buf, size_t nbytes )
{
ssize_t res = nbytes;
extern xComPortHandle xSTDComPort;
switch ( fd )
{
case STDERR_FILENO:
vSerialPutStringNOISR( xSTDComPort,
( const signed portCHAR * const )buf,
( unsigned portSHORT )nbytes );
break;
case STDOUT_FILENO:
vSerialPutString( xSTDComPort,
( const signed portCHAR * const)buf,
( unsigned portSHORT )nbytes );
break;
default:
errno = EIO;
res = -1;
break;
}
return res;
}
int
read( int fd, void *buf, size_t nbytes )
{
switch ( fd )
{
default:
errno = EIO;
return -1;
}
}
int
isatty( int fd )
{
return 0;
}
off_t
lseek( int fd, off_t offset, int whence )
{
errno = EIO;
return ( off_t ) - 1;
}
extern char _end[];
char *heap_ptr;
void *
sbrk( ptrdiff_t nbytes )
{
char *base;
if( !heap_ptr )
heap_ptr = ( char * )&_end;
base = heap_ptr;
heap_ptr += nbytes;
return base;
}

596
Demo/lwIP_MCF5235_GCC/system/serial.c
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@ -1,301 +1,301 @@
/*
FreeRTOS MCF5235 port - Copyright (C) 2006 Christian Walter.
This file is part of the FreeRTOS distribution.
FreeRTOS is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
FreeRTOS is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with FreeRTOS; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
A special exception to the GPL can be applied should you wish to distribute
a combined work that includes FreeRTOS, without being obliged to provide
the source code for any proprietary components. See the licensing section
of http://www.FreeRTOS.org for full details of how and when the exception
can be applied.
***************************************************************************
See http://www.FreeRTOS.org for documentation, latest information, license
and contact details. Please ensure to read the configuration and relevant
/*
FreeRTOS MCF5235 port - Copyright (C) 2006 Christian Walter.
This file is part of the FreeRTOS distribution.
FreeRTOS is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
FreeRTOS is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with FreeRTOS; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
A special exception to the GPL can be applied should you wish to distribute
a combined work that includes FreeRTOS, without being obliged to provide
the source code for any proprietary components. See the licensing section
of http://www.FreeRTOS.org for full details of how and when the exception
can be applied.
***************************************************************************
See http://www.FreeRTOS.org for documentation, latest information, license
and contact details. Please ensure to read the configuration and relevant
port sections of the online documentation.
Also see http://www.SafeRTOS.com for an IEC 61508 compliant version along
with commercial development and support options.
***************************************************************************
*/
/* ------------------------ MCF523x includes ------------------------------ */
#include "mcf5xxx.h"
#include "mcf523x.h"
/* ------------------------ FreeRTOS includes ----------------------------- */
#include "FreeRTOS.h"
#include "queue.h"
#include "task.h"
#include "serial.h"
/* ----------------------- Defines ----------------------------------------- */
#define BAUDRATE_VALUE(fsys, baud) ( ( fsys )/(32UL * baud) )
#define MCF_UART_VECTOR ( 64 + 13 )
#define COM_NIFACE 1
#define COM_BLOCK_RETRYTIME 10
/* ------------------------ Static functions ------------------------------ */
static void prvSerialISR( void );
/* ------------------------ Static variables ------------------------------ */
typedef struct
{
portBASE_TYPE xInitialized;
xQueueHandle xRXChars;
xQueueHandle xTXChars;
} xComPortIF_t;
static xComPortIF_t xComPortIF[ COM_NIFACE ];
/* ------------------------ Begin implementation -------------------------- */
xComPortHandle
xSerialPortInitMinimal( unsigned portLONG ulWantedBaud,
unsigned portBASE_TYPE uxQueueLength )
{
extern void ( *__RAMVEC[] ) ( );
xComPortHandle xReturn;
portBASE_TYPE xOldIPL;
/* Create the queues used to hold Rx and Tx characters. */
xComPortIF[ 0 ].xRXChars =
xQueueCreate( uxQueueLength, ( unsigned portBASE_TYPE )sizeof( signed portCHAR ) );
xComPortIF[ 0 ].xTXChars =
xQueueCreate( uxQueueLength + 1, ( unsigned portBASE_TYPE )sizeof( signed portCHAR ) );
/* If the queues were created correctly then setup the serial port hardware. */
if( ( xComPortIF[ 0 ].xRXChars != 0 ) && ( xComPortIF[ 0 ].xTXChars != 0 ) )
{
xOldIPL = portSET_IPL( portIPL_MAX );
/* UART 0: Reset transmitter, receiver and mode register pointer */
MCF_UART_UCR0 = MCF_UART_UCR_MISC( 0x3 );
MCF_UART_UCR0 = MCF_UART_UCR_MISC( 0x2 );
MCF_UART_UCR0 = MCF_UART_UCR_MISC( 0x1 );
/* Enable receive interrupts. */
MCF_UART_UIMR0 = MCF_UART_UIMR_RXRDY_FU;
/* 8 Databits, 1 Stopbit and no parity */
MCF_UART_UMR0 = MCF_UART_UMR_PM( 0x3 ) | MCF_UART_UMR_SB( 0x7 ) | MCF_UART_UMR_BC( 0x3 );
/* UART 0 Clocking */
MCF_UART_UCSR0 = MCF_UART_UCSR_RCS( 0xd ) | MCF_UART_UCSR_TCS( 0xd );
MCF_UART_UBG10 = BAUDRATE_VALUE( FSYS_2, ulWantedBaud ) >> 8U;
MCF_UART_UBG20 = BAUDRATE_VALUE( FSYS_2, ulWantedBaud ) & 0xFFU;
/* UART 0: Enable interrupts */
__RAMVEC[MCF_UART_VECTOR] = prvSerialISR;
MCF_INTC0_ICR13 = MCF_INTC0_ICRn_IL( 0x2 ) | MCF_INTC0_ICRn_IP( 0x1 );
MCF_INTC0_IMRL &= ~MCF_INTC0_IMRL_INT_MASK13;
/* UART 0 Miscellaneous */
MCF_UART_UACR0 = 0;
/* UART 0: Enable pins */
MCF_GPIO_PAR_UART = MCF_GPIO_PAR_UART_PAR_U0RXD | MCF_GPIO_PAR_UART_PAR_U0TXD;
/* Enable the UART. */
MCF_UART_UCR0 = MCF_UART_UCR_RXC( 0x1 ) | MCF_UART_UCR_TXC( 0x1 );
xComPortIF[ 0 ].xInitialized = TRUE;
xReturn = ( xComPortHandle ) &xComPortIF[ 0 ];
( void )portSET_IPL( xOldIPL );
}
else
{
xReturn = ( xComPortHandle ) 0;
}
return xReturn;
}
signed portBASE_TYPE
xSerialGetChar( xComPortHandle pxPort, signed portCHAR * pcRxedChar,
portTickType xBlockTime )
{
int i;
portBASE_TYPE xResult = pdFALSE;
/* Lookup the correct interface. */
for( i = 0; i < COM_NIFACE; i++ )
{
if( pxPort == ( xComPortHandle ) &xComPortIF[ i ] )
{
break;
}
}
/* This COM port is available. */
if( ( i != COM_NIFACE ) && xComPortIF[ i ].xInitialized )
{
/* Get the next character from the buffer. Return false if no characters
* are available, or arrive before xBlockTime expires.
*/
if( xQueueReceive( xComPortIF[ i ].xRXChars, pcRxedChar, xBlockTime ) )
{
xResult = pdTRUE;
}
}
return xResult;
}
void
vSerialPutString( xComPortHandle pxPort, const signed portCHAR *
const pcString, unsigned portSHORT usStringLength )
{
int i;
signed portCHAR *pChNext;
/* Send each character in the string, one at a time. */
pChNext = ( signed portCHAR * )pcString;
for( i = 0; i < usStringLength; i++ )
{
/* Block until character has been transmitted. */
while( xSerialPutChar( pxPort, *pChNext, COM_BLOCK_RETRYTIME ) != pdTRUE ); pChNext++;
}
}
signed portBASE_TYPE
xSerialPutChar( xComPortHandle pxPort, signed portCHAR cOutChar,
portTickType xBlockTime )
{
int i;
portBASE_TYPE xResult = pdFALSE;
portBASE_TYPE xOldIPL;
/* Lookup the correct interface. */
for( i = 0; i < COM_NIFACE; i++ )
{
if( pxPort == ( xComPortHandle ) &xComPortIF[ i ] )
{
break;
}
}
/* This COM port is available. */
if( ( i != COM_NIFACE ) && xComPortIF[ i ].xInitialized )
{
/* Place the character in the queue of characters to be transmitted. */
if( xQueueSend( xComPortIF[ i ].xTXChars, &cOutChar, xBlockTime ) == pdPASS )
{
/* Turn on the Tx interrupt so the ISR will remove the character from the
* queue and send it. */
MCF_UART_UIMR0 = MCF_UART_UIMR_TXRDY | MCF_UART_UIMR_RXRDY_FU;
xResult = pdTRUE;
}
}
return xResult;
}
signed portBASE_TYPE
xSerialPutCharNOISR( xComPortHandle pxPort, signed portCHAR cOutChar )
{
int i;
portBASE_TYPE xResult = pdFALSE;
portBASE_TYPE xOldIPL = portSET_IPL( portIPL_MAX );
/* Lookup the correct interface. */
for( i = 0; i < COM_NIFACE; i++ )
{
if( pxPort == ( xComPortHandle ) &xComPortIF[ i ] )
{
break;
}
}
/* This COM port is available. Support for this only available for COM1 right now. */
if( ( i != COM_NIFACE ) && ( i == 0 ) )
{
/* Wait until the transmit buffer is ready. */
while( !( MCF_UART_USR0 & MCF_UART_USR_TXRDY ) );
/* Place the character in the transmit buffer. */
MCF_UART_UTB0 = cOutChar;
xResult = pdTRUE;
}
( void )portSET_IPL( xOldIPL );
return xResult;
}
void
vSerialPutStringNOISR( xComPortHandle pxPort, const signed portCHAR *
const pcString, unsigned portSHORT usStringLength )
{
int i;
signed portCHAR *pChNext;
portBASE_TYPE xOldIPL = portSET_IPL( portIPL_MAX );
/* Send each character in the string, one at a time. */
pChNext = ( signed portCHAR * )pcString;
for( i = 0; i < usStringLength; i++ )
{
/* Block until character has been transmitted. */
while( xSerialPutCharNOISR( pxPort, *pChNext ) != pdTRUE );
pChNext++;
}
( void )portSET_IPL( xOldIPL );
}
void
vSerialClose( xComPortHandle xPort )
{
/* Not supported as not required by the demo application. */
}
void
prvSerialISR( void )
{
static signed portCHAR cChar;
static portBASE_TYPE xTaskWokenByTx = pdFALSE, xTaskWokenByRx = pdFALSE;
/* We have to remvoe the effect of the GCC. Please note that the
* __attribute__ ((interrupt_handler)) does not work here because we
* have to do the storing of the registers ourself. Another problem
* is the usage of a frame pointer which is unlinked on entry.
*/
#if _GCC_USES_FP == 1
asm volatile ( "unlk %fp\n\t" );
#endif
/* This ISR can cause a context switch, so the first statement must be
* a call to the portENTER_SWITCHING_ISR() macro. This must be BEFORE any
* variable declarations.
*/
portENTER_SWITCHING_ISR();
/* Ready to send a character from the buffer. */
if( MCF_UART_USR0 & MCF_UART_USR_TXRDY )
{
/* Transmit buffer is ready. Test if there are characters available. */
if( xQueueReceiveFromISR( xComPortIF[ 0 ].xTXChars, &cChar, &xTaskWokenByTx ) ==
pdTRUE )
{
/* A character was retrieved from the queue so can be sent. */
MCF_UART_UTB0 = cChar;
}
else
{
/* Leave only receiver enabled. */
MCF_UART_UIMR0 = MCF_UART_UIMR_RXRDY_FU;
}
}
if( MCF_UART_USR0 & MCF_UART_USR_RXRDY )
{
cChar = MCF_UART_URB0;
xTaskWokenByRx =
xQueueSendFromISR( xComPortIF[ 0].xRXChars, &cChar, xTaskWokenByRx );
}
/* Exit the ISR. If a task was woken by either a character being
* or transmitted then a context switch will occur.
*/
portEXIT_SWITCHING_ISR( ( xTaskWokenByTx || xTaskWokenByRx ) );
}
with commercial development and support options.
***************************************************************************
*/
/* ------------------------ MCF523x includes ------------------------------ */
#include "mcf5xxx.h"
#include "mcf523x.h"
/* ------------------------ FreeRTOS includes ----------------------------- */
#include "FreeRTOS.h"
#include "queue.h"
#include "task.h"
#include "serial.h"
/* ----------------------- Defines ----------------------------------------- */
#define BAUDRATE_VALUE(fsys, baud) ( ( fsys )/(32UL * baud) )
#define MCF_UART_VECTOR ( 64 + 13 )
#define COM_NIFACE 1
#define COM_BLOCK_RETRYTIME 10
/* ------------------------ Static functions ------------------------------ */
static void prvSerialISR( void );
/* ------------------------ Static variables ------------------------------ */
typedef struct
{
portBASE_TYPE xInitialized;
xQueueHandle xRXChars;
xQueueHandle xTXChars;
} xComPortIF_t;
static xComPortIF_t xComPortIF[ COM_NIFACE ];
/* ------------------------ Begin implementation -------------------------- */
xComPortHandle
xSerialPortInitMinimal( unsigned portLONG ulWantedBaud,
unsigned portBASE_TYPE uxQueueLength )
{
extern void ( *__RAMVEC[] ) ( );
xComPortHandle xReturn;
portBASE_TYPE xOldIPL;
/* Create the queues used to hold Rx and Tx characters. */
xComPortIF[ 0 ].xRXChars =
xQueueCreate( uxQueueLength, ( unsigned portBASE_TYPE )sizeof( signed portCHAR ) );
xComPortIF[ 0 ].xTXChars =
xQueueCreate( uxQueueLength + 1, ( unsigned portBASE_TYPE )sizeof( signed portCHAR ) );
/* If the queues were created correctly then setup the serial port hardware. */
if( ( xComPortIF[ 0 ].xRXChars != 0 ) && ( xComPortIF[ 0 ].xTXChars != 0 ) )
{
xOldIPL = portSET_IPL( portIPL_MAX );
/* UART 0: Reset transmitter, receiver and mode register pointer */
MCF_UART_UCR0 = MCF_UART_UCR_MISC( 0x3 );
MCF_UART_UCR0 = MCF_UART_UCR_MISC( 0x2 );
MCF_UART_UCR0 = MCF_UART_UCR_MISC( 0x1 );
/* Enable receive interrupts. */
MCF_UART_UIMR0 = MCF_UART_UIMR_RXRDY_FU;
/* 8 Databits, 1 Stopbit and no parity */
MCF_UART_UMR0 = MCF_UART_UMR_PM( 0x3 ) | MCF_UART_UMR_SB( 0x7 ) | MCF_UART_UMR_BC( 0x3 );
/* UART 0 Clocking */
MCF_UART_UCSR0 = MCF_UART_UCSR_RCS( 0xd ) | MCF_UART_UCSR_TCS( 0xd );
MCF_UART_UBG10 = BAUDRATE_VALUE( FSYS_2, ulWantedBaud ) >> 8U;
MCF_UART_UBG20 = BAUDRATE_VALUE( FSYS_2, ulWantedBaud ) & 0xFFU;
/* UART 0: Enable interrupts */
__RAMVEC[MCF_UART_VECTOR] = prvSerialISR;
MCF_INTC0_ICR13 = MCF_INTC0_ICRn_IL( 0x2 ) | MCF_INTC0_ICRn_IP( 0x1 );
MCF_INTC0_IMRL &= ~MCF_INTC0_IMRL_INT_MASK13;
/* UART 0 Miscellaneous */
MCF_UART_UACR0 = 0;
/* UART 0: Enable pins */
MCF_GPIO_PAR_UART = MCF_GPIO_PAR_UART_PAR_U0RXD | MCF_GPIO_PAR_UART_PAR_U0TXD;
/* Enable the UART. */
MCF_UART_UCR0 = MCF_UART_UCR_RXC( 0x1 ) | MCF_UART_UCR_TXC( 0x1 );
xComPortIF[ 0 ].xInitialized = TRUE;
xReturn = ( xComPortHandle ) &xComPortIF[ 0 ];
( void )portSET_IPL( xOldIPL );
}
else
{
xReturn = ( xComPortHandle ) 0;
}
return xReturn;
}
signed portBASE_TYPE
xSerialGetChar( xComPortHandle pxPort, signed portCHAR * pcRxedChar,
portTickType xBlockTime )
{
int i;
portBASE_TYPE xResult = pdFALSE;
/* Lookup the correct interface. */
for( i = 0; i < COM_NIFACE; i++ )
{
if( pxPort == ( xComPortHandle ) &xComPortIF[ i ] )
{
break;
}
}
/* This COM port is available. */
if( ( i != COM_NIFACE ) && xComPortIF[ i ].xInitialized )
{
/* Get the next character from the buffer. Return false if no characters
* are available, or arrive before xBlockTime expires.
*/
if( xQueueReceive( xComPortIF[ i ].xRXChars, pcRxedChar, xBlockTime ) )
{
xResult = pdTRUE;
}
}
return xResult;
}
void
vSerialPutString( xComPortHandle pxPort, const signed portCHAR *
const pcString, unsigned portSHORT usStringLength )
{
int i;
signed portCHAR *pChNext;
/* Send each character in the string, one at a time. */
pChNext = ( signed portCHAR * )pcString;
for( i = 0; i < usStringLength; i++ )
{
/* Block until character has been transmitted. */
while( xSerialPutChar( pxPort, *pChNext, COM_BLOCK_RETRYTIME ) != pdTRUE ); pChNext++;
}
}
signed portBASE_TYPE
xSerialPutChar( xComPortHandle pxPort, signed portCHAR cOutChar,
portTickType xBlockTime )
{
int i;
portBASE_TYPE xResult = pdFALSE;
portBASE_TYPE xOldIPL;
/* Lookup the correct interface. */
for( i = 0; i < COM_NIFACE; i++ )
{
if( pxPort == ( xComPortHandle ) &xComPortIF[ i ] )
{
break;
}
}
/* This COM port is available. */
if( ( i != COM_NIFACE ) && xComPortIF[ i ].xInitialized )
{
/* Place the character in the queue of characters to be transmitted. */
if( xQueueSend( xComPortIF[ i ].xTXChars, &cOutChar, xBlockTime ) == pdPASS )
{
/* Turn on the Tx interrupt so the ISR will remove the character from the
* queue and send it. */
MCF_UART_UIMR0 = MCF_UART_UIMR_TXRDY | MCF_UART_UIMR_RXRDY_FU;
xResult = pdTRUE;
}
}
return xResult;
}
signed portBASE_TYPE
xSerialPutCharNOISR( xComPortHandle pxPort, signed portCHAR cOutChar )
{
int i;
portBASE_TYPE xResult = pdFALSE;
portBASE_TYPE xOldIPL = portSET_IPL( portIPL_MAX );
/* Lookup the correct interface. */
for( i = 0; i < COM_NIFACE; i++ )
{
if( pxPort == ( xComPortHandle ) &xComPortIF[ i ] )
{
break;
}
}
/* This COM port is available. Support for this only available for COM1 right now. */
if( ( i != COM_NIFACE ) && ( i == 0 ) )
{
/* Wait until the transmit buffer is ready. */
while( !( MCF_UART_USR0 & MCF_UART_USR_TXRDY ) );
/* Place the character in the transmit buffer. */
MCF_UART_UTB0 = cOutChar;
xResult = pdTRUE;
}
( void )portSET_IPL( xOldIPL );
return xResult;
}
void
vSerialPutStringNOISR( xComPortHandle pxPort, const signed portCHAR *
const pcString, unsigned portSHORT usStringLength )
{
int i;
signed portCHAR *pChNext;
portBASE_TYPE xOldIPL = portSET_IPL( portIPL_MAX );
/* Send each character in the string, one at a time. */
pChNext = ( signed portCHAR * )pcString;
for( i = 0; i < usStringLength; i++ )
{
/* Block until character has been transmitted. */
while( xSerialPutCharNOISR( pxPort, *pChNext ) != pdTRUE );
pChNext++;
}
( void )portSET_IPL( xOldIPL );
}
void
vSerialClose( xComPortHandle xPort )
{
/* Not supported as not required by the demo application. */
}
void
prvSerialISR( void )
{
static signed portCHAR cChar;
static portBASE_TYPE xTaskWokenByTx = pdFALSE, xTaskWokenByRx = pdFALSE;
/* We have to remvoe the effect of the GCC. Please note that the
* __attribute__ ((interrupt_handler)) does not work here because we
* have to do the storing of the registers ourself. Another problem
* is the usage of a frame pointer which is unlinked on entry.
*/
#if _GCC_USES_FP == 1
asm volatile ( "unlk %fp\n\t" );
#endif
/* This ISR can cause a context switch, so the first statement must be
* a call to the portENTER_SWITCHING_ISR() macro. This must be BEFORE any
* variable declarations.
*/
portENTER_SWITCHING_ISR();
/* Ready to send a character from the buffer. */
if( MCF_UART_USR0 & MCF_UART_USR_TXRDY )
{
/* Transmit buffer is ready. Test if there are characters available. */
if( xQueueReceiveFromISR( xComPortIF[ 0 ].xTXChars, &cChar, &xTaskWokenByTx ) ==
pdTRUE )
{
/* A character was retrieved from the queue so can be sent. */
MCF_UART_UTB0 = cChar;
}
else
{
/* Leave only receiver enabled. */
MCF_UART_UIMR0 = MCF_UART_UIMR_RXRDY_FU;
}
}
if( MCF_UART_USR0 & MCF_UART_USR_RXRDY )
{
cChar = MCF_UART_URB0;
xTaskWokenByRx =
xQueueSendFromISR( xComPortIF[ 0].xRXChars, &cChar, xTaskWokenByRx );
}
/* Exit the ISR. If a task was woken by either a character being
* or transmitted then a context switch will occur.
*/
portEXIT_SWITCHING_ISR( ( xTaskWokenByTx || xTaskWokenByRx ) );
}