github-forks
/
FreeRTOS
mirror of https://github.com/FreeRTOS/FreeRTOS.git
1
0
Fork 0
Code Issues Projects Releases Wiki Activity

Work in progress.

Browse Source
pull/1/head
Richard Barry 17 years ago
parent bdea62587e
commit 0faf33fbca
2 changed files with 294 additions and 245 deletions
Show Stats Download Patch File Download Diff File

503
Source/portable/Softune/MB96340/port.c
Unescape Escape View File

@ -48,18 +48,34 @@
* Implementation of functions defined in portable.h for the 16FX port. * Implementation of functions defined in portable.h for the 16FX port.
*----------------------------------------------------------*/ *----------------------------------------------------------*/
/* ------- Memory models --------- default address size */
/* data code */
#define SMALL 0 /* 16 Bit 16 Bit */
#define MEDIUM 1 /* 16 Bit 24 Bit */
#define COMPACT 2 /* 24 Bit 16 Bit */
#define LARGE 3 /* 24 Bit 24 Bit */
/* /*
* The below define should be same as the option selected by the Memory * The below define should be same as the option selected by the Memory
* Model (Project->Setup Project->C Compiler->Catagory->Target Depend ) * Model (Project->Setup Project->C Compiler->Catagory->Target Depend )
*/ */
#define MEMMODEL MEDIUM #define configMEMMODEL portMEDIUM
/*-----------------------------------------------------------*/
/*
* Get current value of DPR and ADB registers
*/
portSTACK_TYPE xGet_DPR_ADB_bank( void );
/*
* Get current value of DTB and PCB registers
*/
portSTACK_TYPE xGet_DTB_PCB_bank( void );
/*
* Get current register pointer
*/
portCHAR xGet_RP( void );
/*
* Sets up the periodic ISR used for the RTOS tick. This uses RLT0, but
* can be done using any given RLT.
*/
static void prvSetupRLT0Interrupt( void );
/*-----------------------------------------------------------*/ /*-----------------------------------------------------------*/
@ -70,16 +86,9 @@
typedef void tskTCB; typedef void tskTCB;
extern volatile tskTCB * volatile pxCurrentTCB; extern volatile tskTCB * volatile pxCurrentTCB;
/*-----------------------------------------------------------*/ /* Constants required to handle critical sections. */
#define portNO_CRITICAL_NESTING ( ( unsigned portBASE_TYPE ) 0x1234 )
/* Get current value of DPR and ADB registers */ volatile unsigned portBASE_TYPE uxCriticalNesting = 9999UL;
portSTACK_TYPE Get_DPR_ADB_bank(void);
/* Get current value of DTB and PCB registers */
portSTACK_TYPE Get_DTB_PCB_bank(void);
/* Get current register pointer */
portCHAR Get_RP(void);
/*-----------------------------------------------------------*/ /*-----------------------------------------------------------*/
@ -94,147 +103,156 @@ portCHAR Get_RP(void);
* executes. * executes.
*/ */
#if (MEMMODEL == SMALL || MEMMODEL == MEDIUM) #if( ( configMEMMODEL == portSMALL ) || ( configMEMMODEL == portMEDIUM ) )
#define portSAVE_CONTEXT() \
{ __asm(" POPW A "); \ #define portSAVE_CONTEXT() \
__asm(" AND CCR,#H'DF "); \ { __asm(" POPW A "); \
__asm(" PUSHW A "); \ __asm(" AND CCR,#H'DF "); \
__asm(" OR CCR,#H'20 "); \ __asm(" PUSHW A "); \
__asm(" POPW A "); \ __asm(" OR CCR,#H'20 "); \
__asm(" AND CCR,#H'DF "); \ __asm(" POPW A "); \
__asm(" PUSHW A "); \ __asm(" AND CCR,#H'DF "); \
__asm(" OR CCR,#H'20 "); \ __asm(" PUSHW A "); \
__asm(" POPW A "); \ __asm(" OR CCR,#H'20 "); \
__asm(" AND CCR,#H'DF "); \ __asm(" POPW A "); \
__asm(" PUSHW A "); \ __asm(" AND CCR,#H'DF "); \
__asm(" OR CCR,#H'20 "); \ __asm(" PUSHW A "); \
__asm(" POPW A "); \ __asm(" OR CCR,#H'20 "); \
__asm(" AND CCR,#H'DF "); \ __asm(" POPW A "); \
__asm(" PUSHW A "); \ __asm(" AND CCR,#H'DF "); \
__asm(" OR CCR,#H'20 "); \ __asm(" PUSHW A "); \
__asm(" POPW A "); \ __asm(" OR CCR,#H'20 "); \
__asm(" AND CCR,#H'DF "); \ __asm(" POPW A "); \
__asm(" PUSHW A "); \ __asm(" AND CCR,#H'DF "); \
__asm(" OR CCR,#H'20 "); \ __asm(" PUSHW A "); \
__asm(" POPW A "); \ __asm(" OR CCR,#H'20 "); \
__asm(" AND CCR,#H'DF "); \ __asm(" POPW A "); \
__asm(" PUSHW A "); \ __asm(" AND CCR,#H'DF "); \
__asm(" PUSHW (RW0,RW1,RW2,RW3,RW4,RW5,RW6,RW7) "); \ __asm(" PUSHW A "); \
__asm(" MOVW A, _pxCurrentTCB "); \ __asm(" PUSHW (RW0,RW1,RW2,RW3,RW4,RW5,RW6,RW7) "); \
__asm(" MOVW A, SP "); \ __asm(" MOVW A, _pxCurrentTCB "); \
__asm(" SWAPW "); \ __asm(" MOVW A, SP "); \
__asm(" MOVW @AL, AH "); \ __asm(" SWAPW "); \
__asm(" OR CCR,#H'20 "); \ __asm(" MOVW @AL, AH "); \
} __asm(" OR CCR,#H'20 "); \
}
/*
* Macro to restore a task context from the task stack. This is effecti-
* vely the reverse of portSAVE_CONTEXT(). First the stack pointer value
* (USP for SMALL and MEDIUM memory model amd USB:USP for COMPACT and
* LARGE memory model ) is loaded from the task control block. Next the
* value of all the general purpose registers RW0-RW7 is retrieved. Fina-
* lly it copies of the context ( AH:AL, DPR:ADB, DTB:PCB, PC and PS) of
* the task to be executed upon RETI from user stack to system stack.
*/
#define portRESTORE_CONTEXT() \
{ __asm(" MOVW A, _pxCurrentTCB "); \
__asm(" MOVW A, @A "); \
__asm(" AND CCR,#H'DF "); \
__asm(" MOVW SP, A "); \
__asm(" POPW (RW0,RW1,RW2,RW3,RW4,RW5,RW6,RW7) "); \
__asm(" POPW A "); \
__asm(" OR CCR,#H'20 "); \
__asm(" PUSHW A "); \
__asm(" AND CCR,#H'DF "); \
__asm(" POPW A "); \
__asm(" OR CCR,#H'20 "); \
__asm(" PUSHW A "); \
__asm(" AND CCR,#H'DF "); \
__asm(" POPW A "); \
__asm(" OR CCR,#H'20 "); \
__asm(" PUSHW A "); \
__asm(" AND CCR,#H'DF "); \
__asm(" POPW A "); \
__asm(" OR CCR,#H'20 "); \
__asm(" PUSHW A "); \
__asm(" AND CCR,#H'DF "); \
__asm(" POPW A "); \
__asm(" OR CCR,#H'20 "); \
__asm(" PUSHW A "); \
__asm(" AND CCR,#H'DF "); \
__asm(" POPW A "); \
__asm(" OR CCR,#H'20 "); \
__asm(" PUSHW A "); \
}
#elif (MEMMODEL == COMPACT || MEMMODEL == LARGE) /*
#define portSAVE_CONTEXT() \ * Macro to restore a task context from the task stack. This is effecti-
{ __asm(" POPW A "); \ * vely the reverse of SAVE_CONTEXT(). First the stack pointer value
__asm(" AND CCR,#H'DF "); \ * (USP for SMALL and MEDIUM memory model amd USB:USP for COMPACT and
__asm(" PUSHW A "); \ * LARGE memory model ) is loaded from the task control block. Next the
__asm(" OR CCR,#H'20 "); \ * value of all the general purpose registers RW0-RW7 is retrieved. Fina-
__asm(" POPW A "); \ * lly it copies of the context ( AH:AL, DPR:ADB, DTB:PCB, PC and PS) of
__asm(" AND CCR,#H'DF "); \ * the task to be executed upon RETI from user stack to system stack.
__asm(" PUSHW A "); \ */
__asm(" OR CCR,#H'20 "); \
__asm(" POPW A "); \
__asm(" AND CCR,#H'DF "); \
__asm(" PUSHW A "); \
__asm(" OR CCR,#H'20 "); \
__asm(" POPW A "); \
__asm(" AND CCR,#H'DF "); \
__asm(" PUSHW A "); \
__asm(" OR CCR,#H'20 "); \
__asm(" POPW A "); \
__asm(" AND CCR,#H'DF "); \
__asm(" PUSHW A "); \
__asm(" OR CCR,#H'20 "); \
__asm(" POPW A "); \
__asm(" AND CCR,#H'DF "); \
__asm(" PUSHW A "); \
__asm(" PUSHW (RW0,RW1,RW2,RW3,RW4,RW5,RW6,RW7) "); \
__asm(" MOVL A, _pxCurrentTCB "); \
__asm(" MOVL RL2, A "); \
__asm(" MOVW A, SP "); \
__asm(" MOVW @RL2+0, A "); \
__asm(" MOV A, USB "); \
__asm(" MOV @RL2+2, A "); \
}
#define portRESTORE_CONTEXT() \ #define portRESTORE_CONTEXT() \
{ __asm(" MOVL A, _pxCurrentTCB "); \ { __asm(" MOVW A, _pxCurrentTCB "); \
__asm(" MOVL RL2, A "); \ __asm(" MOVW A, @A "); \
__asm(" MOVW A, @RL2+0 "); \ __asm(" AND CCR,#H'DF "); \
__asm(" AND CCR,#H'DF "); \ __asm(" MOVW SP, A "); \
__asm(" MOVW SP, A "); \ \
__asm(" MOV A, @RL2+2 "); \ /* Load the saves uxCriticalNesting value into RW0. */ \
__asm(" MOV USB, A "); \ __asm(" POPW (RW0) "); \
__asm(" POPW (RW0,RW1,RW2,RW3,RW4,RW5,RW6,RW7) "); \ \
__asm(" POPW A "); \ /* Save the loaded value into the uxCriticalNesting variable. */ \
__asm(" OR CCR,#H'20 "); \ __asm(" MOVW _uxCriticalNesting, RW0 "); \
__asm(" PUSHW A "); \ \
__asm(" AND CCR,#H'DF "); \ __asm(" POPW (RW0,RW1,RW2,RW3,RW4,RW5,RW6,RW7) "); \
__asm(" POPW A "); \ __asm(" POPW A "); \
__asm(" OR CCR,#H'20 "); \ __asm(" OR CCR,#H'20 "); \
__asm(" PUSHW A "); \ __asm(" PUSHW A "); \
__asm(" AND CCR,#H'DF "); \ __asm(" AND CCR,#H'DF "); \
__asm(" POPW A "); \ __asm(" POPW A "); \
__asm(" OR CCR,#H'20 "); \ __asm(" OR CCR,#H'20 "); \
__asm(" PUSHW A "); \ __asm(" PUSHW A "); \
__asm(" AND CCR,#H'DF "); \ __asm(" AND CCR,#H'DF "); \
__asm(" POPW A "); \ __asm(" POPW A "); \
__asm(" OR CCR,#H'20 "); \ __asm(" OR CCR,#H'20 "); \
__asm(" PUSHW A "); \ __asm(" PUSHW A "); \
__asm(" AND CCR,#H'DF "); \ __asm(" AND CCR,#H'DF "); \
__asm(" POPW A "); \ __asm(" POPW A "); \
__asm(" OR CCR,#H'20 "); \ __asm(" OR CCR,#H'20 "); \
__asm(" PUSHW A "); \ __asm(" PUSHW A "); \
__asm(" AND CCR,#H'DF "); \ __asm(" AND CCR,#H'DF "); \
__asm(" POPW A "); \ __asm(" POPW A "); \
__asm(" OR CCR,#H'20 "); \ __asm(" OR CCR,#H'20 "); \
__asm(" PUSHW A "); \ __asm(" PUSHW A "); \
} __asm(" AND CCR,#H'DF "); \
__asm(" POPW A "); \
__asm(" OR CCR,#H'20 "); \
__asm(" PUSHW A "); \
}
#elif (configMEMMODEL == portCOMPACT || configMEMMODEL == portLARGE)
#define portSAVE_CONTEXT() \
{ __asm(" POPW A "); \
__asm(" AND CCR,#H'DF "); \
__asm(" PUSHW A "); \
__asm(" OR CCR,#H'20 "); \
__asm(" POPW A "); \
__asm(" AND CCR,#H'DF "); \
__asm(" PUSHW A "); \
__asm(" OR CCR,#H'20 "); \
__asm(" POPW A "); \
__asm(" AND CCR,#H'DF "); \
__asm(" PUSHW A "); \
__asm(" OR CCR,#H'20 "); \
__asm(" POPW A "); \
__asm(" AND CCR,#H'DF "); \
__asm(" PUSHW A "); \
__asm(" OR CCR,#H'20 "); \
__asm(" POPW A "); \
__asm(" AND CCR,#H'DF "); \
__asm(" PUSHW A "); \
__asm(" OR CCR,#H'20 "); \
__asm(" POPW A "); \
__asm(" AND CCR,#H'DF "); \
__asm(" PUSHW A "); \
__asm(" PUSHW (RW0,RW1,RW2,RW3,RW4,RW5,RW6,RW7) "); \
__asm(" MOVL A, _pxCurrentTCB "); \
__asm(" MOVL RL2, A "); \
__asm(" MOVW A, SP "); \
__asm(" MOVW @RL2+0, A "); \
__asm(" MOV A, USB "); \
__asm(" MOV @RL2+2, A "); \
}
#define portRESTORE_CONTEXT() \
{ __asm(" MOVL A, _pxCurrentTCB "); \
__asm(" MOVL RL2, A "); \
__asm(" MOVW A, @RL2+0 "); \
__asm(" AND CCR,#H'DF "); \
__asm(" MOVW SP, A "); \
__asm(" MOV A, @RL2+2 "); \
__asm(" MOV USB, A "); \
__asm(" POPW (RW0,RW1,RW2,RW3,RW4,RW5,RW6,RW7) "); \
__asm(" POPW A "); \
__asm(" OR CCR,#H'20 "); \
__asm(" PUSHW A "); \
__asm(" AND CCR,#H'DF "); \
__asm(" POPW A "); \
__asm(" OR CCR,#H'20 "); \
__asm(" PUSHW A "); \
__asm(" AND CCR,#H'DF "); \
__asm(" POPW A "); \
__asm(" OR CCR,#H'20 "); \
__asm(" PUSHW A "); \
__asm(" AND CCR,#H'DF "); \
__asm(" POPW A "); \
__asm(" OR CCR,#H'20 "); \
__asm(" PUSHW A "); \
__asm(" AND CCR,#H'DF "); \
__asm(" POPW A "); \
__asm(" OR CCR,#H'20 "); \
__asm(" PUSHW A "); \
__asm(" AND CCR,#H'DF "); \
__asm(" POPW A "); \
__asm(" OR CCR,#H'20 "); \
__asm(" PUSHW A "); \
}
#endif #endif
/*-----------------------------------------------------------*/ /*-----------------------------------------------------------*/
@ -245,50 +263,52 @@ portCHAR Get_RP(void);
*/ */
#pragma asm #pragma asm
.GLOBAL _Get_DPR_ADB_bank
.GLOBAL _Get_DTB_PCB_bank .GLOBAL _xGet_DPR_ADB_bank
.GLOBAL _Get_RP .GLOBAL _xGet_DTB_PCB_bank
.GLOBAL _xGet_RP
.SECTION CODE, CODE, ALIGN=1 .SECTION CODE, CODE, ALIGN=1
_Get_DPR_ADB_bank:
_xGet_DPR_ADB_bank:
MOV A, DPR MOV A, DPR
SWAP SWAP
MOV A, ADB MOV A, ADB
ORW A ORW A
#if MEMMODEL == MEDIUM || MEMMODEL == LARGE #if configMEMMODEL == portMEDIUM || configMEMMODEL == portLARGE
RETP RETP
#elif MEMMODEL == SMALL || MEMMODEL == COMPACT #elif configMEMMODEL == portSMALL || configMEMMODEL == portCOMPACT
RET RET
#endif #endif
_xGet_DTB_PCB_bank:
_Get_DTB_PCB_bank:
MOV A, DTB MOV A, DTB
SWAP SWAP
MOV A, PCB MOV A, PCB
ORW A ORW A
#if MEMMODEL == MEDIUM || MEMMODEL == LARGE #if configMEMMODEL == portMEDIUM || configMEMMODEL == portLARGE
RETP RETP
#elif MEMMODEL == SMALL || MEMMODEL == COMPACT #elif configMEMMODEL == portSMALL || configMEMMODEL == portCOMPACT
RET RET
#endif #endif
_xGet_RP:
_Get_RP:
PUSHW PS PUSHW PS
POPW A POPW A
SWAP SWAP
ANDW A,#0x1f ANDW A,#0x1f
#if MEMMODEL == MEDIUM || MEMMODEL == LARGE #if configMEMMODEL == portMEDIUM || configMEMMODEL == portLARGE
RETP RETP
#elif MEMMODEL == SMALL || MEMMODEL == COMPACT #elif configMEMMODEL == portSMALL || configMEMMODEL == portCOMPACT
RET RET
#endif #endif
#pragma endasm
/*-----------------------------------------------------------*/
/*
* Sets up the periodic ISR used for the RTOS tick. This uses RLT0, but #pragma endasm
* can be done using any given RLT.
*/
static void prvSetupRLT0Interrupt( void );
/*-----------------------------------------------------------*/ /*-----------------------------------------------------------*/
/* /*
@ -301,7 +321,6 @@ portSTACK_TYPE *pxPortInitialiseStack( portSTACK_TYPE *pxTopOfStack, pdTASK_CODE
{ {
/* Place a few bytes of known values on the bottom of the stack. /* Place a few bytes of known values on the bottom of the stack.
This is just useful for debugging. */ This is just useful for debugging. */
*pxTopOfStack = 0x1111; *pxTopOfStack = 0x1111;
pxTopOfStack--; pxTopOfStack--;
*pxTopOfStack = 0x2222; *pxTopOfStack = 0x2222;
@ -309,69 +328,75 @@ portSTACK_TYPE *pxPortInitialiseStack( portSTACK_TYPE *pxTopOfStack, pdTASK_CODE
*pxTopOfStack = 0x3333; *pxTopOfStack = 0x3333;
pxTopOfStack--; pxTopOfStack--;
/* Once the task is called the called would push the pointer to the /* Once the task is called the task would push the pointer to the
parameter on to the stack. Hence here the pointer would be copied first parameter on to the stack. Hence here the pointer would be copied first
to the stack. In case of COMPACT or LARGE memory model such pointer to the stack. In case of COMPACT or LARGE memory model such pointer
would be 24 bit and in case of SMALL or MEDIUM memory model such pointer would be 24 bit and in case of SMALL or MEDIUM memory model such pointer
would be 16 bit */ would be 16 bit */
#if MEMMODEL == COMPACT || MEMMODEL == LARGE #if( ( configMEMMODEL == portCOMPACT ) || ( configMEMMODEL == portLARGE ) )
*pxTopOfStack = (portSTACK_TYPE)((portLONG)(pvParameters)>>16); {
pxTopOfStack--; *pxTopOfStack = ( portSTACK_TYPE ) ( ( unsigned portLONG ) ( pvParameters ) >> 16 );
#endif pxTopOfStack--;
}
#endif
*pxTopOfStack = (portSTACK_TYPE)(pvParameters); *pxTopOfStack = ( portSTACK_TYPE ) ( pvParameters );
pxTopOfStack--; pxTopOfStack--;
/* This is redundant push to the stack. This is required in order to introduce /* This is redundant push to the stack. This is required in order to introduce
an offset so that the task accesses a parameter correctly that is passed on to an offset so that the task accesses a parameter correctly that is passed on to
the task stack. */ the task stack. */
#if MEMMODEL == MEDIUM || MEMMODEL == LARGE #if( ( configMEMMODEL == portMEDIUM ) || ( configMEMMODEL == portLARGE ) )
*pxTopOfStack = (Get_DTB_PCB_bank() & 0xff00) | {
(((portLONG)(pxCode) >>16) & 0xff); *pxTopOfStack = ( xGet_DTB_PCB_bank() & 0xff00 ) | ( ( ( portLONG ) ( pxCode ) >> 16 ) & 0xff );
pxTopOfStack--; pxTopOfStack--;
#endif }
#endif
/* This is redundant push to the stack. This is required in order to introduce /* This is redundant push to the stack. This is required in order to introduce
an offset so that the task accesses a parameter correctly that is passed on to an offset so that the task accesses a parameter correctly that is passed on to
the task stack. */ the task stack. */
*pxTopOfStack = ( portSTACK_TYPE )(pxCode); *pxTopOfStack = ( portSTACK_TYPE ) ( pxCode );
pxTopOfStack--; pxTopOfStack--;
/* PS - User Mode, ILM=7, RB=0, Interrupts enabled,USP */ /* PS - User Mode, ILM=7, RB=0, Interrupts enabled,USP */
*pxTopOfStack = 0xE0C0; *pxTopOfStack = 0xE0C0;
pxTopOfStack--; pxTopOfStack--;
/* PC */ /* PC */
*pxTopOfStack = ( portSTACK_TYPE )(pxCode); *pxTopOfStack = ( portSTACK_TYPE ) ( pxCode );
pxTopOfStack--; pxTopOfStack--;
/* DTB | PCB */ /* DTB | PCB */
#if MEMMODEL == SMALL || MEMMODEL == COMPACT #if configMEMMODEL == portSMALL || configMEMMODEL == portCOMPACT
*pxTopOfStack = Get_DTB_PCB_bank(); {
pxTopOfStack--; *pxTopOfStack = xGet_DTB_PCB_bank();
#endif pxTopOfStack--;
}
#endif
/* DTB | PCB, in case of MEDIUM or LARGE memory model PCB would be used /* DTB | PCB, in case of portMEDIUM or portLARGE memory model PCB would be used
along with PC to indicate the start address of the functiom */ along with PC to indicate the start address of the functiom */
#if MEMMODEL == MEDIUM || MEMMODEL == LARGE #if( ( configMEMMODEL == portMEDIUM ) || ( configMEMMODEL == portLARGE ) )
*pxTopOfStack = (Get_DTB_PCB_bank() & 0xff00) | {
(((portLONG)(pxCode) >>16) & 0xff); *pxTopOfStack = ( xGet_DTB_PCB_bank() & 0xff00 ) | ( ( ( portLONG ) ( pxCode ) >> 16 ) & 0xff );
pxTopOfStack--; pxTopOfStack--;
#endif }
#endif
/* DPR | ADB */ /* DPR | ADB */
*pxTopOfStack = Get_DPR_ADB_bank(); *pxTopOfStack = xGet_DPR_ADB_bank();
pxTopOfStack--; pxTopOfStack--;
/* AL */ /* AL */
*pxTopOfStack = ( portSTACK_TYPE ) 0x9999; *pxTopOfStack = ( portSTACK_TYPE ) 0x9999;
pxTopOfStack--; pxTopOfStack--;
/* AH */ /* AH */
*pxTopOfStack = ( portSTACK_TYPE ) 0xAAAA; *pxTopOfStack = ( portSTACK_TYPE ) 0xAAAA;
pxTopOfStack--; pxTopOfStack--;
/* Next the general purpose registers. */ /* Next the general purpose registers. */
*pxTopOfStack = ( portSTACK_TYPE ) 0x7777; /* RW7 */ *pxTopOfStack = ( portSTACK_TYPE ) 0x7777; /* RW7 */
pxTopOfStack--; pxTopOfStack--;
*pxTopOfStack = ( portSTACK_TYPE ) 0x6666; /* RW6 */ *pxTopOfStack = ( portSTACK_TYPE ) 0x6666; /* RW6 */
@ -387,13 +412,16 @@ portSTACK_TYPE *pxPortInitialiseStack( portSTACK_TYPE *pxTopOfStack, pdTASK_CODE
*pxTopOfStack = ( portSTACK_TYPE ) 0x1111; /* RW1 */ *pxTopOfStack = ( portSTACK_TYPE ) 0x1111; /* RW1 */
pxTopOfStack--; pxTopOfStack--;
*pxTopOfStack = ( portSTACK_TYPE ) 0x8888; /* RW0 */ *pxTopOfStack = ( portSTACK_TYPE ) 0x8888; /* RW0 */
pxTopOfStack--;
/* The task starts with its uxCriticalNesting variable set to 0, interrupts
being enabled. */
*pxTopOfStack = portNO_CRITICAL_NESTING;
return pxTopOfStack; return pxTopOfStack;
} }
/*-----------------------------------------------------------*/ /*-----------------------------------------------------------*/
/*
* Setup RLT0 to generate a tick interrupt.
*/
static void prvSetupRLT0Interrupt( void ) static void prvSetupRLT0Interrupt( void )
{ {
/* set reload value = 34999+1, TICK Interrupt after 10 ms @ 56MHz of CLKP1 */ /* set reload value = 34999+1, TICK Interrupt after 10 ms @ 56MHz of CLKP1 */
@ -403,9 +431,7 @@ static void prvSetupRLT0Interrupt( void )
TMCSR0 = 0x041B; TMCSR0 = 0x041B;
} }
/*-----------------------------------------------------------*/ /*-----------------------------------------------------------*/
/*
* Start the scheduler.
*/
portBASE_TYPE xPortStartScheduler( void ) portBASE_TYPE xPortStartScheduler( void )
{ {
/* Setup the hardware to generate the tick. */ /* Setup the hardware to generate the tick. */
@ -427,8 +453,8 @@ portBASE_TYPE xPortStartScheduler( void )
void vPortEndScheduler( void ) void vPortEndScheduler( void )
{ {
/* It is unlikely that the AVR port will get stopped. If required simply /* Not implemented - unlikely to ever be required as there is nothing to
disable the tick interrupt here. */ return to. */
} }
/*-----------------------------------------------------------*/ /*-----------------------------------------------------------*/
@ -488,6 +514,7 @@ void vPortEndScheduler( void )
vTaskIncrementTick(); vTaskIncrementTick();
} }
#endif #endif
/*-----------------------------------------------------------*/ /*-----------------------------------------------------------*/
@ -508,6 +535,7 @@ __nosavereg __interrupt void vPortYield( void )
/* Restore the context of the new task. */ /* Restore the context of the new task. */
portRESTORE_CONTEXT(); portRESTORE_CONTEXT();
} }
/*-----------------------------------------------------------*/
__nosavereg __interrupt void vPortYieldDelayed( void ) __nosavereg __interrupt void vPortYieldDelayed( void )
{ {
@ -535,3 +563,30 @@ __nosavereg __interrupt void vPortYieldDelayed( void )
/* Enable interrupts */ /* Enable interrupts */
__EI(); __EI();
} }
/*-----------------------------------------------------------*/
void vPortEnterCritical( void )
{
/* Disable interrupts */
portDISABLE_INTERRUPTS();
/* Now interrupts are disabled uxCriticalNesting can be accessed
directly. Increment uxCriticalNesting to keep a count of how many times
portENTER_CRITICAL() has been called. */
uxCriticalNesting++;
}
/*-----------------------------------------------------------*/
void vPortExitCritical( void )
{
if( uxCriticalNesting > portNO_CRITICAL_NESTING )
{
uxCriticalNesting--;
if( uxCriticalNesting == portNO_CRITICAL_NESTING )
{
/* Enable all interrupt/exception. */
portENABLE_INTERRUPTS();
}
}
}
/*-----------------------------------------------------------*/

38
Source/portable/Softune/MB96340/portmacro.h
Unescape Escape View File

@ -44,6 +44,10 @@
#ifndef PORTMACRO_H #ifndef PORTMACRO_H
#define PORTMACRO_H #define PORTMACRO_H
#include "mb96348hs.h"
#include <stddef.h>
/*----------------------------------------------------------- /*-----------------------------------------------------------
* Port specific definitions. * Port specific definitions.
* *
@ -59,12 +63,9 @@
#define portFLOAT float #define portFLOAT float
#define portDOUBLE double #define portDOUBLE double
#define portLONG long #define portLONG long
#define portSHORT int #define portSHORT short
#define portSTACK_TYPE unsigned portSHORT #define portSTACK_TYPE unsigned portSHORT
#define portBASE_TYPE char #define portBASE_TYPE portSHORT
/* This is required since SOFTUNE doesn't support inline directive as is. */
#define inline
#if( configUSE_16_BIT_TICKS == 1 ) #if( configUSE_16_BIT_TICKS == 1 )
typedef unsigned portSHORT portTickType; typedef unsigned portSHORT portTickType;
@ -75,21 +76,11 @@
#endif #endif
/*-----------------------------------------------------------*/ /*-----------------------------------------------------------*/
#define portDISABLE_INTERRUPTS() __DI(); /* Critical section handling. */
#define portDISABLE_INTERRUPTS() __DI();
#define portENABLE_INTERRUPTS() __EI(); #define portENABLE_INTERRUPTS() __EI();
#define portENTER_CRITICAL() vPortEnterCritical()
/*-----------------------------------------------------------*/ #define portEXIT_CRITICAL() vPortExitCritical()
#define portENTER_CRITICAL() \
{ __asm(" PUSHW PS "); \
portDISABLE_INTERRUPTS(); \
}
#define portEXIT_CRITICAL() \
{ __asm(" POPW PS "); \
}
/*-----------------------------------------------------------*/ /*-----------------------------------------------------------*/
@ -103,8 +94,8 @@
/* portYIELD() uses SW interrupt */ /* portYIELD() uses SW interrupt */
#define portYIELD() __asm( " INT #122 " ); #define portYIELD() __asm( " INT #122 " );
/* portYIELD() uses delayed interrupt */ /* portYIELD_FROM_ISR() uses delayed interrupt */
#define portYIELDFromISR() __asm (" SETB 03A4H:0 "); #define portYIELD_FROM_ISR() __asm( " SETB 03A4H:0 " );
/*-----------------------------------------------------------*/ /*-----------------------------------------------------------*/
/* Task function macros as described on the FreeRTOS.org WEB site. */ /* Task function macros as described on the FreeRTOS.org WEB site. */
@ -113,5 +104,8 @@
#define portMINIMAL_STACK_SIZE configMINIMAL_STACK_SIZE #define portMINIMAL_STACK_SIZE configMINIMAL_STACK_SIZE
/* Remove the inline declaration from within the kernel code. */
#define inline
#endif /* PORTMACRO_H */ #endif /* PORTMACRO_H */

Write Preview
Loading…
Cancel
Save