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Alfred Gedeon
alfred gedeon
parent
a5dbc2b1de
commit
718178c68a
406 changed files with 108795 additions and 106323 deletions
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@ -29,28 +29,28 @@
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#include "task.h"
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/*-----------------------------------------------------------
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* Implementation of functions defined in portable.h for the MSP430X port.
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*----------------------------------------------------------*/
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* Implementation of functions defined in portable.h for the MSP430X port.
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*----------------------------------------------------------*/
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/* Constants required for hardware setup. The tick ISR runs off the ACLK,
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not the MCLK. */
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#define portACLK_FREQUENCY_HZ ( ( TickType_t ) 32768 )
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#define portINITIAL_CRITICAL_NESTING ( ( uint16_t ) 10 )
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#define portFLAGS_INT_ENABLED ( ( StackType_t ) 0x08 )
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* not the MCLK. */
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#define portACLK_FREQUENCY_HZ ( ( TickType_t ) 32768 )
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#define portINITIAL_CRITICAL_NESTING ( ( uint16_t ) 10 )
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#define portFLAGS_INT_ENABLED ( ( StackType_t ) 0x08 )
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/* We require the address of the pxCurrentTCB variable, but don't want to know
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any details of its type. */
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* any details of its type. */
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typedef void TCB_t;
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extern volatile TCB_t * volatile pxCurrentTCB;
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/* Each task maintains a count of the critical section nesting depth. Each
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time a critical section is entered the count is incremented. Each time a
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critical section is exited the count is decremented - with interrupts only
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being re-enabled if the count is zero.
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usCriticalNesting will get set to zero when the scheduler starts, but must
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not be initialised to zero as this will cause problems during the startup
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sequence. */
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* time a critical section is entered the count is incremented. Each time a
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* critical section is exited the count is decremented - with interrupts only
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* being re-enabled if the count is zero.
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*
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* usCriticalNesting will get set to zero when the scheduler starts, but must
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* not be initialised to zero as this will cause problems during the startup
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* sequence. */
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volatile uint16_t usCriticalNesting = portINITIAL_CRITICAL_NESTING;
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/*-----------------------------------------------------------*/
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@ -68,94 +68,96 @@ void vPortSetupTimerInterrupt( void );
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*
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* See the header file portable.h.
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*/
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StackType_t *pxPortInitialiseStack( StackType_t *pxTopOfStack, TaskFunction_t pxCode, void *pvParameters )
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StackType_t * pxPortInitialiseStack( StackType_t * pxTopOfStack,
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TaskFunction_t pxCode,
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void * pvParameters )
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{
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uint16_t *pusTopOfStack;
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uint32_t *pulTopOfStack, ulTemp;
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uint16_t * pusTopOfStack;
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uint32_t * pulTopOfStack, ulTemp;
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/*
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Place a few bytes of known values on the bottom of the stack.
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This is just useful for debugging and can be included if required.
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/*
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* Place a few bytes of known values on the bottom of the stack.
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* This is just useful for debugging and can be included if required.
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*
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* pxTopOfStack = ( StackType_t ) 0x1111;
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* pxTopOfStack--;
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* pxTopOfStack = ( StackType_t ) 0x2222;
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* pxTopOfStack--;
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* pxTopOfStack = ( StackType_t ) 0x3333;
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* pxTopOfStack--;
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*/
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*pxTopOfStack = ( StackType_t ) 0x1111;
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pxTopOfStack--;
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*pxTopOfStack = ( StackType_t ) 0x2222;
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pxTopOfStack--;
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*pxTopOfStack = ( StackType_t ) 0x3333;
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pxTopOfStack--;
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*/
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/* Data types are need either 16 bits or 32 bits depending on the data
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* and code model used. */
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if( sizeof( pxCode ) == sizeof( uint16_t ) )
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{
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pusTopOfStack = ( uint16_t * ) pxTopOfStack;
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ulTemp = ( uint32_t ) pxCode;
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*pusTopOfStack = ( uint16_t ) ulTemp;
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}
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else
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{
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/* Make room for a 20 bit value stored as a 32 bit value. */
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pusTopOfStack = ( uint16_t * ) pxTopOfStack;
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pusTopOfStack--;
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pulTopOfStack = ( uint32_t * ) pusTopOfStack;
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*pulTopOfStack = ( uint32_t ) pxCode;
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}
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/* Data types are need either 16 bits or 32 bits depending on the data
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and code model used. */
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if( sizeof( pxCode ) == sizeof( uint16_t ) )
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{
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pusTopOfStack = ( uint16_t * ) pxTopOfStack;
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ulTemp = ( uint32_t ) pxCode;
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*pusTopOfStack = ( uint16_t ) ulTemp;
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}
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else
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{
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/* Make room for a 20 bit value stored as a 32 bit value. */
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pusTopOfStack = ( uint16_t * ) pxTopOfStack;
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pusTopOfStack--;
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pulTopOfStack = ( uint32_t * ) pusTopOfStack;
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*pulTopOfStack = ( uint32_t ) pxCode;
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}
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pusTopOfStack--;
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*pusTopOfStack = portFLAGS_INT_ENABLED;
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pusTopOfStack -= ( sizeof( StackType_t ) / 2 );
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pusTopOfStack--;
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*pusTopOfStack = portFLAGS_INT_ENABLED;
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pusTopOfStack -= ( sizeof( StackType_t ) / 2 );
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/* From here on the size of stacked items depends on the memory model. */
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pxTopOfStack = ( StackType_t * ) pusTopOfStack;
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/* From here on the size of stacked items depends on the memory model. */
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pxTopOfStack = ( StackType_t * ) pusTopOfStack;
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/* Next the general purpose registers. */
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#ifdef PRELOAD_REGISTER_VALUES
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*pxTopOfStack = ( StackType_t ) 0xffff;
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pxTopOfStack--;
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*pxTopOfStack = ( StackType_t ) 0xeeee;
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pxTopOfStack--;
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*pxTopOfStack = ( StackType_t ) 0xdddd;
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pxTopOfStack--;
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*pxTopOfStack = ( StackType_t ) pvParameters;
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pxTopOfStack--;
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*pxTopOfStack = ( StackType_t ) 0xbbbb;
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pxTopOfStack--;
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*pxTopOfStack = ( StackType_t ) 0xaaaa;
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pxTopOfStack--;
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*pxTopOfStack = ( StackType_t ) 0x9999;
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pxTopOfStack--;
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*pxTopOfStack = ( StackType_t ) 0x8888;
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pxTopOfStack--;
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*pxTopOfStack = ( StackType_t ) 0x5555;
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pxTopOfStack--;
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*pxTopOfStack = ( StackType_t ) 0x6666;
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pxTopOfStack--;
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*pxTopOfStack = ( StackType_t ) 0x5555;
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pxTopOfStack--;
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*pxTopOfStack = ( StackType_t ) 0x4444;
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pxTopOfStack--;
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#else
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pxTopOfStack -= 3;
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*pxTopOfStack = ( StackType_t ) pvParameters;
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pxTopOfStack -= 9;
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#endif
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/* Next the general purpose registers. */
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#ifdef PRELOAD_REGISTER_VALUES
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*pxTopOfStack = ( StackType_t ) 0xffff;
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pxTopOfStack--;
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*pxTopOfStack = ( StackType_t ) 0xeeee;
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pxTopOfStack--;
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*pxTopOfStack = ( StackType_t ) 0xdddd;
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pxTopOfStack--;
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*pxTopOfStack = ( StackType_t ) pvParameters;
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pxTopOfStack--;
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*pxTopOfStack = ( StackType_t ) 0xbbbb;
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pxTopOfStack--;
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*pxTopOfStack = ( StackType_t ) 0xaaaa;
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pxTopOfStack--;
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*pxTopOfStack = ( StackType_t ) 0x9999;
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pxTopOfStack--;
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*pxTopOfStack = ( StackType_t ) 0x8888;
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pxTopOfStack--;
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*pxTopOfStack = ( StackType_t ) 0x5555;
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pxTopOfStack--;
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*pxTopOfStack = ( StackType_t ) 0x6666;
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pxTopOfStack--;
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*pxTopOfStack = ( StackType_t ) 0x5555;
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pxTopOfStack--;
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*pxTopOfStack = ( StackType_t ) 0x4444;
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pxTopOfStack--;
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#else /* ifdef PRELOAD_REGISTER_VALUES */
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pxTopOfStack -= 3;
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*pxTopOfStack = ( StackType_t ) pvParameters;
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pxTopOfStack -= 9;
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#endif /* ifdef PRELOAD_REGISTER_VALUES */
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/* A variable is used to keep track of the critical section nesting.
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This variable has to be stored as part of the task context and is
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initially set to zero. */
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*pxTopOfStack = ( StackType_t ) portNO_CRITICAL_SECTION_NESTING;
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/* A variable is used to keep track of the critical section nesting.
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* This variable has to be stored as part of the task context and is
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* initially set to zero. */
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*pxTopOfStack = ( StackType_t ) portNO_CRITICAL_SECTION_NESTING;
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/* Return a pointer to the top of the stack we have generated so this can
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be stored in the task control block for the task. */
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return pxTopOfStack;
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/* Return a pointer to the top of the stack we have generated so this can
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* be stored in the task control block for the task. */
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return pxTopOfStack;
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}
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/*-----------------------------------------------------------*/
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void vPortEndScheduler( void )
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{
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/* It is unlikely that the MSP430 port will get stopped. If required simply
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disable the tick interrupt here. */
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/* It is unlikely that the MSP430 port will get stopped. If required simply
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* disable the tick interrupt here. */
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}
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/*-----------------------------------------------------------*/
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@ -164,23 +166,21 @@ void vPortEndScheduler( void )
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*/
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void vPortSetupTimerInterrupt( void )
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{
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vApplicationSetupTimerInterrupt();
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vApplicationSetupTimerInterrupt();
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}
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/*-----------------------------------------------------------*/
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#pragma vector=configTICK_VECTOR
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interrupt void vTickISREntry( void )
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{
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extern void vPortTickISR( void );
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extern void vPortTickISR( void );
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__bic_SR_register_on_exit( SCG1 + SCG0 + OSCOFF + CPUOFF );
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#if configUSE_PREEMPTION == 1
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extern void vPortPreemptiveTickISR( void );
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vPortPreemptiveTickISR();
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#else
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extern void vPortCooperativeTickISR( void );
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vPortCooperativeTickISR();
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#endif
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__bic_SR_register_on_exit( SCG1 + SCG0 + OSCOFF + CPUOFF );
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#if configUSE_PREEMPTION == 1
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extern void vPortPreemptiveTickISR( void );
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vPortPreemptiveTickISR();
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#else
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extern void vPortCooperativeTickISR( void );
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vPortCooperativeTickISR();
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#endif
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}
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