diff options
| author | richardbarry <richardbarry@1d2547de-c912-0410-9cb9-b8ca96c0e9e2> | 2012-08-11 21:34:11 +0000 |
|---|---|---|
| committer | richardbarry <richardbarry@1d2547de-c912-0410-9cb9-b8ca96c0e9e2> | 2012-08-11 21:34:11 +0000 |
| commit | f279ebee719fa6bda3f91061819e6b42051c7395 (patch) | |
| tree | c2ef3f908508343c26551949d5f947009cda3291 /FreeRTOS/Source/portable/Paradigm/Tern_EE/small | |
| parent | 24ce9d9c87e6b7b23f0915e1a91fb4a5bd2f7c3d (diff) | |
| download | freertos-f279ebee719fa6bda3f91061819e6b42051c7395.tar.gz | |
Add FreeRTOS-Plus directory.
git-svn-id: http://svn.code.sf.net/p/freertos/code/trunk@1765 1d2547de-c912-0410-9cb9-b8ca96c0e9e2
Diffstat (limited to 'FreeRTOS/Source/portable/Paradigm/Tern_EE/small')
3 files changed, 508 insertions, 0 deletions
diff --git a/FreeRTOS/Source/portable/Paradigm/Tern_EE/small/port.c b/FreeRTOS/Source/portable/Paradigm/Tern_EE/small/port.c new file mode 100644 index 000000000..b85a28c99 --- /dev/null +++ b/FreeRTOS/Source/portable/Paradigm/Tern_EE/small/port.c @@ -0,0 +1,256 @@ +/*
+ FreeRTOS V7.1.1 - Copyright (C) 2012 Real Time Engineers Ltd.
+
+
+ ***************************************************************************
+ * *
+ * FreeRTOS tutorial books are available in pdf and paperback. *
+ * Complete, revised, and edited pdf reference manuals are also *
+ * available. *
+ * *
+ * Purchasing FreeRTOS documentation will not only help you, by *
+ * ensuring you get running as quickly as possible and with an *
+ * in-depth knowledge of how to use FreeRTOS, it will also help *
+ * the FreeRTOS project to continue with its mission of providing *
+ * professional grade, cross platform, de facto standard solutions *
+ * for microcontrollers - completely free of charge! *
+ * *
+ * >>> See http://www.FreeRTOS.org/Documentation for details. <<< *
+ * *
+ * Thank you for using FreeRTOS, and thank you for your support! *
+ * *
+ ***************************************************************************
+
+
+ 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 (version 2) as published by the
+ Free Software Foundation AND MODIFIED BY the FreeRTOS exception.
+ >>>NOTE<<< The modification to the GPL is included to allow you to
+ distribute a combined work that includes FreeRTOS without being obliged to
+ provide the source code for proprietary components outside of the FreeRTOS
+ kernel. 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 and the FreeRTOS license exception along with FreeRTOS; if not it
+ can be viewed here: http://www.freertos.org/a00114.html and also obtained
+ by writing to Richard Barry, contact details for whom are available on the
+ FreeRTOS WEB site.
+
+ 1 tab == 4 spaces!
+
+ ***************************************************************************
+ * *
+ * Having a problem? Start by reading the FAQ "My application does *
+ * not run, what could be wrong? *
+ * *
+ * http://www.FreeRTOS.org/FAQHelp.html *
+ * *
+ ***************************************************************************
+
+
+ http://www.FreeRTOS.org - Documentation, training, latest information,
+ license and contact details.
+
+ http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,
+ including FreeRTOS+Trace - an indispensable productivity tool.
+
+ Real Time Engineers ltd license FreeRTOS to High Integrity Systems, who sell
+ the code with commercial support, indemnification, and middleware, under
+ the OpenRTOS brand: http://www.OpenRTOS.com. High Integrity Systems also
+ provide a safety engineered and independently SIL3 certified version under
+ the SafeRTOS brand: http://www.SafeRTOS.com.
+*/
+
+
+/*-----------------------------------------------------------
+ * Implementation of functions defined in portable.h for the Tern EE 186
+ * port.
+ *----------------------------------------------------------*/
+
+/* Library includes. */
+#include <embedded.h>
+#include <ae.h>
+
+/* Scheduler includes. */
+#include "FreeRTOS.h"
+#include "task.h"
+#include "portasm.h"
+
+/* The timer increments every four clocks, hence the divide by 4. */
+#define portPRESCALE_VALUE ( 16 )
+#define portTIMER_COMPARE ( configCPU_CLOCK_HZ / ( configTICK_RATE_HZ * 4UL ) )
+
+/* From the RDC data sheet. */
+#define portENABLE_TIMER_AND_INTERRUPT ( unsigned short ) 0xe00b
+#define portENABLE_TIMER ( unsigned short ) 0xC001
+
+/* Interrupt control. */
+#define portEIO_REGISTER 0xff22
+#define portCLEAR_INTERRUPT 0x0008
+
+/* Setup the hardware to generate the required tick frequency. */
+static void prvSetupTimerInterrupt( void );
+
+/* The ISR used depends on whether the preemptive or cooperative scheduler
+is being used. */
+#if( configUSE_PREEMPTION == 1 )
+ /* Tick service routine used by the scheduler when preemptive scheduling is
+ being used. */
+ static void __interrupt __far prvPreemptiveTick( void );
+#else
+ /* Tick service routine used by the scheduler when cooperative scheduling is
+ being used. */
+ static void __interrupt __far prvNonPreemptiveTick( void );
+#endif
+
+/* Trap routine used by taskYIELD() to manually cause a context switch. */
+static void __interrupt __far prvYieldProcessor( void );
+
+/*-----------------------------------------------------------*/
+/* See header file for description. */
+portSTACK_TYPE *pxPortInitialiseStack( portSTACK_TYPE *pxTopOfStack, pdTASK_CODE pxCode, void *pvParameters )
+{
+portSTACK_TYPE DS_Reg = 0;
+
+ /* We need the true data segment. */
+ __asm{ MOV DS_Reg, DS };
+
+ /* Place a few bytes of known values on the bottom of the stack.
+ This is just useful for debugging. */
+
+ *pxTopOfStack = 0x1111;
+ pxTopOfStack--;
+ *pxTopOfStack = 0x2222;
+ pxTopOfStack--;
+ *pxTopOfStack = 0x3333;
+ pxTopOfStack--;
+
+ /* We are going to start the scheduler using a return from interrupt
+ instruction to load the program counter, so first there would be the
+ function call with parameters preamble. */
+
+ *pxTopOfStack = FP_OFF( pvParameters );
+ pxTopOfStack--;
+ *pxTopOfStack = FP_OFF( pxCode );
+ pxTopOfStack--;
+
+ /* Next the status register and interrupt return address. */
+ *pxTopOfStack = portINITIAL_SW;
+ pxTopOfStack--;
+ *pxTopOfStack = FP_SEG( pxCode );
+ pxTopOfStack--;
+ *pxTopOfStack = FP_OFF( pxCode );
+ pxTopOfStack--;
+
+ /* The remaining registers would be pushed on the stack by our context
+ switch function. These are loaded with values simply to make debugging
+ easier. */
+ *pxTopOfStack = ( portSTACK_TYPE ) 0xAAAA; /* AX */
+ pxTopOfStack--;
+ *pxTopOfStack = ( portSTACK_TYPE ) 0xBBBB; /* BX */
+ pxTopOfStack--;
+ *pxTopOfStack = ( portSTACK_TYPE ) 0xCCCC; /* CX */
+ pxTopOfStack--;
+ *pxTopOfStack = ( portSTACK_TYPE ) 0xDDDD; /* DX */
+ pxTopOfStack--;
+ *pxTopOfStack = ( portSTACK_TYPE ) 0xEEEE; /* ES */
+ pxTopOfStack--;
+
+ *pxTopOfStack = DS_Reg; /* DS */
+ pxTopOfStack--;
+ *pxTopOfStack = ( portSTACK_TYPE ) 0x0123; /* SI */
+ pxTopOfStack--;
+ *pxTopOfStack = ( portSTACK_TYPE ) 0xDDDD; /* DI */
+ pxTopOfStack--;
+ *pxTopOfStack = ( portSTACK_TYPE ) 0xBBBB; /* BP */
+
+ return pxTopOfStack;
+}
+/*-----------------------------------------------------------*/
+
+portBASE_TYPE xPortStartScheduler( void )
+{
+ /* This is called with interrupts already disabled. */
+
+ /* Put our manual switch (yield) function on a known
+ vector. */
+ setvect( portSWITCH_INT_NUMBER, prvYieldProcessor );
+
+ /* Setup the tick interrupt. */
+ prvSetupTimerInterrupt();
+
+ /* Kick off the scheduler by setting up the context of the first task. */
+ portFIRST_CONTEXT();
+
+ /* Should not get here! */
+ return pdFALSE;
+}
+/*-----------------------------------------------------------*/
+
+/* The ISR used depends on whether the preemptive or cooperative scheduler
+is being used. */
+#if( configUSE_PREEMPTION == 1 )
+ static void __interrupt __far prvPreemptiveTick( void )
+ {
+ /* Get the scheduler to update the task states following the tick. */
+ vTaskIncrementTick();
+
+ /* Switch in the context of the next task to be run. */
+ portEND_SWITCHING_ISR();
+
+ /* Reset interrupt. */
+ outport( portEIO_REGISTER, portCLEAR_INTERRUPT );
+ }
+#else
+ static void __interrupt __far prvNonPreemptiveTick( void )
+ {
+ /* Same as preemptive tick, but the cooperative scheduler is being used
+ so we don't have to switch in the context of the next task. */
+ vTaskIncrementTick();
+ /* Reset interrupt. */
+ outport( portEIO_REGISTER, portCLEAR_INTERRUPT );
+ }
+#endif
+/*-----------------------------------------------------------*/
+
+static void __interrupt __far prvYieldProcessor( void )
+{
+ /* Switch in the context of the next task to be run. */
+ portEND_SWITCHING_ISR();
+}
+/*-----------------------------------------------------------*/
+
+void vPortEndScheduler( void )
+{
+ /* Not implemented. */
+}
+/*-----------------------------------------------------------*/
+
+static void prvSetupTimerInterrupt( void )
+{
+const unsigned long ulCompareValue = portTIMER_COMPARE;
+unsigned short usTimerCompare;
+
+ usTimerCompare = ( unsigned short ) ( ulCompareValue >> 4 );
+ t2_init( portENABLE_TIMER, portPRESCALE_VALUE, NULL );
+
+ #if( configUSE_PREEMPTION == 1 )
+ /* Tick service routine used by the scheduler when preemptive scheduling is
+ being used. */
+ t1_init( portENABLE_TIMER_AND_INTERRUPT, usTimerCompare, usTimerCompare, prvPreemptiveTick );
+ #else
+ /* Tick service routine used by the scheduler when cooperative scheduling is
+ being used. */
+ t1_init( portENABLE_TIMER_AND_INTERRUPT, usTimerCompare, usTimerCompare, prvNonPreemptiveTick );
+ #endif
+}
+
+
+
+
+
+
+
diff --git a/FreeRTOS/Source/portable/Paradigm/Tern_EE/small/portasm.h b/FreeRTOS/Source/portable/Paradigm/Tern_EE/small/portasm.h new file mode 100644 index 000000000..4db979e0d --- /dev/null +++ b/FreeRTOS/Source/portable/Paradigm/Tern_EE/small/portasm.h @@ -0,0 +1,111 @@ +/*
+ FreeRTOS V7.1.1 - Copyright (C) 2012 Real Time Engineers Ltd.
+
+
+ ***************************************************************************
+ * *
+ * FreeRTOS tutorial books are available in pdf and paperback. *
+ * Complete, revised, and edited pdf reference manuals are also *
+ * available. *
+ * *
+ * Purchasing FreeRTOS documentation will not only help you, by *
+ * ensuring you get running as quickly as possible and with an *
+ * in-depth knowledge of how to use FreeRTOS, it will also help *
+ * the FreeRTOS project to continue with its mission of providing *
+ * professional grade, cross platform, de facto standard solutions *
+ * for microcontrollers - completely free of charge! *
+ * *
+ * >>> See http://www.FreeRTOS.org/Documentation for details. <<< *
+ * *
+ * Thank you for using FreeRTOS, and thank you for your support! *
+ * *
+ ***************************************************************************
+
+
+ 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 (version 2) as published by the
+ Free Software Foundation AND MODIFIED BY the FreeRTOS exception.
+ >>>NOTE<<< The modification to the GPL is included to allow you to
+ distribute a combined work that includes FreeRTOS without being obliged to
+ provide the source code for proprietary components outside of the FreeRTOS
+ kernel. 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 and the FreeRTOS license exception along with FreeRTOS; if not it
+ can be viewed here: http://www.freertos.org/a00114.html and also obtained
+ by writing to Richard Barry, contact details for whom are available on the
+ FreeRTOS WEB site.
+
+ 1 tab == 4 spaces!
+
+ ***************************************************************************
+ * *
+ * Having a problem? Start by reading the FAQ "My application does *
+ * not run, what could be wrong? *
+ * *
+ * http://www.FreeRTOS.org/FAQHelp.html *
+ * *
+ ***************************************************************************
+
+
+ http://www.FreeRTOS.org - Documentation, training, latest information,
+ license and contact details.
+
+ http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,
+ including FreeRTOS+Trace - an indispensable productivity tool.
+
+ Real Time Engineers ltd license FreeRTOS to High Integrity Systems, who sell
+ the code with commercial support, indemnification, and middleware, under
+ the OpenRTOS brand: http://www.OpenRTOS.com. High Integrity Systems also
+ provide a safety engineered and independently SIL3 certified version under
+ the SafeRTOS brand: http://www.SafeRTOS.com.
+*/
+
+#ifndef PORT_ASM_H
+#define PORT_ASM_H
+
+typedef void tskTCB;
+extern volatile tskTCB * volatile pxCurrentTCB;
+extern void vTaskSwitchContext( void );
+
+/*
+ * Saves the stack pointer for one task into its TCB, calls
+ * vTaskSwitchContext() to update the TCB being used, then restores the stack
+ * from the new TCB read to run the task.
+ */
+void portEND_SWITCHING_ISR( void );
+
+/*
+ * Load the stack pointer from the TCB of the task which is going to be first
+ * to execute. Then force an IRET so the registers and IP are popped off the
+ * stack.
+ */
+void portFIRST_CONTEXT( void );
+
+#define portEND_SWITCHING_ISR() \
+ asm { mov bx, [pxCurrentTCB] } \
+ asm { mov word ptr [bx], sp } \
+ asm { call far ptr vTaskSwitchContext } \
+ asm { mov bx, [pxCurrentTCB] } \
+ asm { mov sp, [bx] }
+
+#define portFIRST_CONTEXT() \
+ asm { mov bx, [pxCurrentTCB] } \
+ asm { mov sp, [bx] } \
+ asm { pop bp } \
+ asm { pop di } \
+ asm { pop si } \
+ asm { pop ds } \
+ asm { pop es } \
+ asm { pop dx } \
+ asm { pop cx } \
+ asm { pop bx } \
+ asm { pop ax } \
+ asm { iret }
+
+
+#endif
+
diff --git a/FreeRTOS/Source/portable/Paradigm/Tern_EE/small/portmacro.h b/FreeRTOS/Source/portable/Paradigm/Tern_EE/small/portmacro.h new file mode 100644 index 000000000..5ec51f367 --- /dev/null +++ b/FreeRTOS/Source/portable/Paradigm/Tern_EE/small/portmacro.h @@ -0,0 +1,141 @@ +/*
+ FreeRTOS V7.1.1 - Copyright (C) 2012 Real Time Engineers Ltd.
+
+
+ ***************************************************************************
+ * *
+ * FreeRTOS tutorial books are available in pdf and paperback. *
+ * Complete, revised, and edited pdf reference manuals are also *
+ * available. *
+ * *
+ * Purchasing FreeRTOS documentation will not only help you, by *
+ * ensuring you get running as quickly as possible and with an *
+ * in-depth knowledge of how to use FreeRTOS, it will also help *
+ * the FreeRTOS project to continue with its mission of providing *
+ * professional grade, cross platform, de facto standard solutions *
+ * for microcontrollers - completely free of charge! *
+ * *
+ * >>> See http://www.FreeRTOS.org/Documentation for details. <<< *
+ * *
+ * Thank you for using FreeRTOS, and thank you for your support! *
+ * *
+ ***************************************************************************
+
+
+ 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 (version 2) as published by the
+ Free Software Foundation AND MODIFIED BY the FreeRTOS exception.
+ >>>NOTE<<< The modification to the GPL is included to allow you to
+ distribute a combined work that includes FreeRTOS without being obliged to
+ provide the source code for proprietary components outside of the FreeRTOS
+ kernel. 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 and the FreeRTOS license exception along with FreeRTOS; if not it
+ can be viewed here: http://www.freertos.org/a00114.html and also obtained
+ by writing to Richard Barry, contact details for whom are available on the
+ FreeRTOS WEB site.
+
+ 1 tab == 4 spaces!
+
+ ***************************************************************************
+ * *
+ * Having a problem? Start by reading the FAQ "My application does *
+ * not run, what could be wrong? *
+ * *
+ * http://www.FreeRTOS.org/FAQHelp.html *
+ * *
+ ***************************************************************************
+
+
+ http://www.FreeRTOS.org - Documentation, training, latest information,
+ license and contact details.
+
+ http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,
+ including FreeRTOS+Trace - an indispensable productivity tool.
+
+ Real Time Engineers ltd license FreeRTOS to High Integrity Systems, who sell
+ the code with commercial support, indemnification, and middleware, under
+ the OpenRTOS brand: http://www.OpenRTOS.com. High Integrity Systems also
+ provide a safety engineered and independently SIL3 certified version under
+ the SafeRTOS brand: http://www.SafeRTOS.com.
+*/
+
+#ifndef PORTMACRO_H
+#define PORTMACRO_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*-----------------------------------------------------------
+ * Port specific definitions.
+ *
+ * The settings in this file configure FreeRTOS correctly for the
+ * given hardware and compiler.
+ *
+ * These settings should not be altered.
+ *-----------------------------------------------------------
+ */
+
+/* Type definitions. */
+#define portCHAR char
+#define portFLOAT float
+#define portDOUBLE long
+#define portLONG long
+#define portSHORT int
+#define portSTACK_TYPE unsigned portSHORT
+#define portBASE_TYPE portSHORT
+
+typedef void ( __interrupt __far *pxISR )();
+
+#if( configUSE_16_BIT_TICKS == 1 )
+ typedef unsigned portSHORT portTickType;
+ #define portMAX_DELAY ( portTickType ) 0xffff
+#else
+ typedef unsigned portLONG portTickType;
+ #define portMAX_DELAY ( portTickType ) 0xffffffff
+#endif
+/*-----------------------------------------------------------*/
+
+/* Critical section handling. */
+#define portENTER_CRITICAL() __asm{ pushf } \
+ __asm{ cli } \
+
+#define portEXIT_CRITICAL() __asm{ popf }
+
+#define portDISABLE_INTERRUPTS() __asm{ cli }
+
+#define portENABLE_INTERRUPTS() __asm{ sti }
+/*-----------------------------------------------------------*/
+
+/* Hardware specifics. */
+#define portNOP() __asm{ nop }
+#define portSTACK_GROWTH ( -1 )
+#define portSWITCH_INT_NUMBER 0x80
+#define portYIELD() __asm{ int portSWITCH_INT_NUMBER }
+#define portTICK_RATE_MS ( ( portTickType ) 1000 / configTICK_RATE_HZ )
+#define portBYTE_ALIGNMENT 2
+#define portINITIAL_SW ( ( portSTACK_TYPE ) 0x0202 ) /* Start the tasks with interrupts enabled. */
+/*-----------------------------------------------------------*/
+
+/* Compiler specifics. */
+#define portINPUT_BYTE( xAddr ) inp( xAddr )
+#define portOUTPUT_BYTE( xAddr, ucValue ) outp( xAddr, ucValue )
+#define portINPUT_WORD( xAddr ) inpw( xAddr )
+#define portOUTPUT_WORD( xAddr, usValue ) outpw( xAddr, usValue )
+/*-----------------------------------------------------------*/
+
+/* Task function macros as described on the FreeRTOS.org WEB site. */
+#define portTASK_FUNCTION_PROTO( vTaskFunction, vParameters ) void vTaskFunction( void *pvParameters )
+#define portTASK_FUNCTION( vTaskFunction, vParameters ) void vTaskFunction( void *pvParameters )
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* PORTMACRO_H */
+
|