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Revert formatting on Rowley ports (#884)
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Co-authored-by: Rahul Kar <118818625+kar-rahul-aws@users.noreply.github.com>
Co-authored-by: Gaurav-Aggarwal-AWS <33462878+aggarg@users.noreply.github.com>
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@Skptak @kar-rahul-aws @aggarg
3 people authored Nov 23, 2023
1 parent 8d1da77 commit 9a2ce91
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Showing 3 changed files with 131 additions and 130 deletions.
65 changes: 33 additions & 32 deletions portable/Rowley/MSP430F449/port.c
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Original file line number Diff line number Diff line change
Expand Up @@ -31,28 +31,28 @@
#include "task.h"

/*-----------------------------------------------------------
* Implementation of functions defined in portable.h for the MSP430 port.
*----------------------------------------------------------*/
* Implementation of functions defined in portable.h for the MSP430 port.
*----------------------------------------------------------*/

/* Constants required for hardware setup. The tick ISR runs off the ACLK,
* not the MCLK. */
not the MCLK. */
#define portACLK_FREQUENCY_HZ ( ( TickType_t ) 32768 )
#define portINITIAL_CRITICAL_NESTING ( ( uint16_t ) 10 )
#define portFLAGS_INT_ENABLED ( ( StackType_t ) 0x08 )

/* We require the address of the pxCurrentTCB variable, but don't want to know
* any details of its type. */
any details of its type. */
typedef void TCB_t;
extern volatile TCB_t * volatile pxCurrentTCB;

/* Each task maintains a count of the critical section nesting depth. Each
* time a critical section is entered the count is incremented. Each time a
* critical section is exited the count is decremented - with interrupts only
* being re-enabled if the count is zero.
*
* usCriticalNesting will get set to zero when the scheduler starts, but must
* not be initialised to zero as this will cause problems during the startup
* sequence. */
time a critical section is entered the count is incremented. Each time a
critical section is exited the count is decremented - with interrupts only
being re-enabled if the count is zero.
usCriticalNesting will get set to zero when the scheduler starts, but must
not be initialised to zero as this will cause problems during the startup
sequence. */
volatile uint16_t usCriticalNesting = portINITIAL_CRITICAL_NESTING;
/*-----------------------------------------------------------*/

Expand All @@ -70,26 +70,24 @@ void prvSetupTimerInterrupt( void );
*
* See the header file portable.h.
*/
StackType_t * pxPortInitialiseStack( StackType_t * pxTopOfStack,
TaskFunction_t pxCode,
void * pvParameters )
StackType_t *pxPortInitialiseStack( StackType_t *pxTopOfStack, TaskFunction_t pxCode, void *pvParameters )
{
/*
* Place a few bytes of known values on the bottom of the stack.
* This is just useful for debugging and can be included if required.
*
* pxTopOfStack = ( StackType_t ) 0x1111;
* pxTopOfStack--;
* pxTopOfStack = ( StackType_t ) 0x2222;
* pxTopOfStack--;
* pxTopOfStack = ( StackType_t ) 0x3333;
* pxTopOfStack--;
*/
Place a few bytes of known values on the bottom of the stack.
This is just useful for debugging and can be included if required.
*pxTopOfStack = ( StackType_t ) 0x1111;
pxTopOfStack--;
*pxTopOfStack = ( StackType_t ) 0x2222;
pxTopOfStack--;
*pxTopOfStack = ( StackType_t ) 0x3333;
pxTopOfStack--;
*/

/* The msp430 automatically pushes the PC then SR onto the stack before
* executing an ISR. We want the stack to look just as if this has happened
* so place a pointer to the start of the task on the stack first - followed
* by the flags we want the task to use when it starts up. */
executing an ISR. We want the stack to look just as if this has happened
so place a pointer to the start of the task on the stack first - followed
by the flags we want the task to use when it starts up. */
*pxTopOfStack = ( StackType_t ) pxCode;
pxTopOfStack--;
*pxTopOfStack = portFLAGS_INT_ENABLED;
Expand Down Expand Up @@ -120,25 +118,25 @@ StackType_t * pxPortInitialiseStack( StackType_t * pxTopOfStack,
pxTopOfStack--;

/* When the task starts is will expect to find the function parameter in
* R15. */
R15. */
*pxTopOfStack = ( StackType_t ) pvParameters;
pxTopOfStack--;

/* A variable is used to keep track of the critical section nesting.
* This variable has to be stored as part of the task context and is
* initially set to zero. */
This variable has to be stored as part of the task context and is
initially set to zero. */
*pxTopOfStack = ( StackType_t ) portNO_CRITICAL_SECTION_NESTING;

/* Return a pointer to the top of the stack we have generated so this can
* be stored in the task control block for the task. */
be stored in the task control block for the task. */
return pxTopOfStack;
}
/*-----------------------------------------------------------*/

void vPortEndScheduler( void )
{
/* It is unlikely that the MSP430 port will get stopped. If required simply
* disable the tick interrupt here. */
disable the tick interrupt here. */
}
/*-----------------------------------------------------------*/

Expand Down Expand Up @@ -170,3 +168,6 @@ void prvSetupTimerInterrupt( void )
TACTL |= MC_1;
}
/*-----------------------------------------------------------*/



82 changes: 41 additions & 41 deletions portable/Rowley/MSP430F449/portasm.h
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Original file line number Diff line number Diff line change
Expand Up @@ -30,51 +30,51 @@
#define PORT_ASM_H

portSAVE_CONTEXT macro
/* Save the remaining registers. */
push r4
push r5
push r6
push r7
push r8
push r9
push r10
push r11
push r12
push r13
push r14
push r15
mov.w &_usCriticalNesting, r14
push r14
mov.w &_pxCurrentTCB, r12
mov.w r1, @r12
endm
/* Save the remaining registers. */
push r4
push r5
push r6
push r7
push r8
push r9
push r10
push r11
push r12
push r13
push r14
push r15
mov.w &_usCriticalNesting, r14
push r14
mov.w &_pxCurrentTCB, r12
mov.w r1, @r12
endm
/*-----------------------------------------------------------*/

portRESTORE_CONTEXT macro
mov.w &_pxCurrentTCB, r12
mov.w @r12, r1
pop r15
mov.w r15, &_usCriticalNesting
pop r15
pop r14
pop r13
pop r12
pop r11
pop r10
pop r9
pop r8
pop r7
pop r6
pop r5
pop r4
mov.w &_pxCurrentTCB, r12
mov.w @r12, r1
pop r15
mov.w r15, &_usCriticalNesting
pop r15
pop r14
pop r13
pop r12
pop r11
pop r10
pop r9
pop r8
pop r7
pop r6
pop r5
pop r4

/* The last thing on the stack will be the status register.
* Ensure the power down bits are clear ready for the next
* time this power down register is popped from the stack. */
bic.w # 0xf0, 0 ( SP )
/* The last thing on the stack will be the status register.
Ensure the power down bits are clear ready for the next
time this power down register is popped from the stack. */
bic.w #0xf0,0(SP)

reti
endm
reti
endm
/*-----------------------------------------------------------*/

#endif /* ifndef PORT_ASM_H */
#endif
114 changes: 57 additions & 57 deletions portable/Rowley/MSP430F449/portmacro.h
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Original file line number Diff line number Diff line change
Expand Up @@ -40,24 +40,24 @@
*/

/* Type definitions. */
#define portCHAR char
#define portFLOAT float
#define portDOUBLE double
#define portLONG long
#define portSHORT int
#define portSTACK_TYPE uint16_t
#define portBASE_TYPE short

typedef portSTACK_TYPE StackType_t;
typedef short BaseType_t;
typedef unsigned short UBaseType_t;


#if ( configTICK_TYPE_WIDTH_IN_BITS == TICK_TYPE_WIDTH_16_BITS )
typedef uint16_t TickType_t;
#define portMAX_DELAY ( TickType_t ) 0xffff
#elif ( configTICK_TYPE_WIDTH_IN_BITS == TICK_TYPE_WIDTH_32_BITS )
typedef uint32_t TickType_t;
#define portCHAR char
#define portFLOAT float
#define portDOUBLE double
#define portLONG long
#define portSHORT int
#define portSTACK_TYPE uint16_t
#define portBASE_TYPE short

typedef portSTACK_TYPE StackType_t;
typedef short BaseType_t;
typedef unsigned short UBaseType_t;


#if( configTICK_TYPE_WIDTH_IN_BITS == TICK_TYPE_WIDTH_16_BITS )
typedef uint16_t TickType_t;
#define portMAX_DELAY ( TickType_t ) 0xffff
#elif ( configTICK_TYPE_WIDTH_IN_BITS == TICK_TYPE_WIDTH_32_BITS )
typedef uint32_t TickType_t;
#define portMAX_DELAY ( TickType_t ) 0xffffffffUL
#else
#error configTICK_TYPE_WIDTH_IN_BITS set to unsupported tick type width.
Expand All @@ -71,37 +71,37 @@ typedef unsigned short UBaseType_t;
/*-----------------------------------------------------------*/

/* Critical section control macros. */
#define portNO_CRITICAL_SECTION_NESTING ( ( uint16_t ) 0 )

#define portENTER_CRITICAL() \
{ \
extern volatile uint16_t usCriticalNesting; \
\
portDISABLE_INTERRUPTS(); \
\
/* Now interrupts are disabled usCriticalNesting can be accessed */ \
/* directly. Increment ulCriticalNesting to keep a count of how many */ \
/* times portENTER_CRITICAL() has been called. */ \
usCriticalNesting++; \
}

#define portEXIT_CRITICAL() \
{ \
extern volatile uint16_t usCriticalNesting; \
\
if( usCriticalNesting > portNO_CRITICAL_SECTION_NESTING ) \
{ \
/* Decrement the nesting count as we are leaving a critical section. */ \
usCriticalNesting--; \
\
/* If the nesting level has reached zero then interrupts should be */ \
/* re-enabled. */ \
if( usCriticalNesting == portNO_CRITICAL_SECTION_NESTING ) \
{ \
portENABLE_INTERRUPTS(); \
} \
} \
}
#define portNO_CRITICAL_SECTION_NESTING ( ( uint16_t ) 0 )

#define portENTER_CRITICAL() \
{ \
extern volatile uint16_t usCriticalNesting; \
\
portDISABLE_INTERRUPTS(); \
\
/* Now interrupts are disabled usCriticalNesting can be accessed */ \
/* directly. Increment ulCriticalNesting to keep a count of how many */ \
/* times portENTER_CRITICAL() has been called. */ \
usCriticalNesting++; \
}

#define portEXIT_CRITICAL() \
{ \
extern volatile uint16_t usCriticalNesting; \
\
if( usCriticalNesting > portNO_CRITICAL_SECTION_NESTING ) \
{ \
/* Decrement the nesting count as we are leaving a critical section. */ \
usCriticalNesting--; \
\
/* If the nesting level has reached zero then interrupts should be */ \
/* re-enabled. */ \
if( usCriticalNesting == portNO_CRITICAL_SECTION_NESTING ) \
{ \
portENABLE_INTERRUPTS(); \
} \
} \
}
/*-----------------------------------------------------------*/

/* Task utilities. */
Expand All @@ -110,24 +110,24 @@ typedef unsigned short UBaseType_t;
* Manual context switch called by portYIELD or taskYIELD.
*/
extern void vPortYield( void );
#define portYIELD() vPortYield()
#define portYIELD() vPortYield()
/*-----------------------------------------------------------*/

/* Hardware specifics. */
#define portBYTE_ALIGNMENT 2
#define portSTACK_GROWTH ( -1 )
#define portTICK_PERIOD_MS ( ( TickType_t ) 1000 / configTICK_RATE_HZ )
#define portBYTE_ALIGNMENT 2
#define portSTACK_GROWTH ( -1 )
#define portTICK_PERIOD_MS ( ( TickType_t ) 1000 / configTICK_RATE_HZ )
#define portNOP()
/*-----------------------------------------------------------*/

/* Task function macros as described on the FreeRTOS.org WEB site. */
#define portTASK_FUNCTION_PROTO( vFunction, pvParameters ) void vFunction( void * pvParameters )
#define portTASK_FUNCTION( vFunction, pvParameters ) void vFunction( void * pvParameters ) __toplevel
#define portTASK_FUNCTION_PROTO( vFunction, pvParameters ) void vFunction( void *pvParameters )
#define portTASK_FUNCTION( vFunction, pvParameters ) void vFunction( void *pvParameters ) __toplevel

#if configINTERRUPT_EXAMPLE_METHOD == 2

extern void vTaskSwitchContext( void );
#define portYIELD_FROM_ISR( x ) do { if( x ) vTaskSwitchContext( ); } while( 0 )
extern void vTaskSwitchContext( void );
#define portYIELD_FROM_ISR( x ) do { if( x ) vTaskSwitchContext(); } while( 0 )

#endif

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