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Alfred Gedeon 2020-07-01 22:27:40 -07:00 • committed by alfred gedeon
parent a5dbc2b1de
commit 718178c68a
406 changed files with 108795 additions and 106323 deletions
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112
portable/GCC/CORTUS_APS3/port.c
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@ -37,7 +37,7 @@
/*-----------------------------------------------------------*/
/* The initial PSR has the Previous Interrupt Enabled (PIEN) flag set. */
#define portINITIAL_PSR ( 0x00020000 )
#define portINITIAL_PSR ( 0x00020000 )
/*-----------------------------------------------------------*/
@ -47,98 +47,100 @@
static void prvSetupTimerInterrupt( void );
/*-----------------------------------------------------------*/
StackType_t *pxPortInitialiseStack( StackType_t * pxTopOfStack, TaskFunction_t pxCode, void *pvParameters )
StackType_t * pxPortInitialiseStack( StackType_t * pxTopOfStack,
TaskFunction_t pxCode,
void * pvParameters )
{
/* Make space on the stack for the context - this leaves a couple of spaces
empty. */
pxTopOfStack -= 20;
/* Make space on the stack for the context - this leaves a couple of spaces
* empty. */
pxTopOfStack -= 20;
/* Fill the registers with known values to assist debugging. */
pxTopOfStack[ 16 ] = 0;
pxTopOfStack[ 15 ] = portINITIAL_PSR;
pxTopOfStack[ 14 ] = ( uint32_t ) pxCode;
pxTopOfStack[ 13 ] = 0x00000000UL; /* R15. */
pxTopOfStack[ 12 ] = 0x00000000UL; /* R14. */
pxTopOfStack[ 11 ] = 0x0d0d0d0dUL;
pxTopOfStack[ 10 ] = 0x0c0c0c0cUL;
pxTopOfStack[ 9 ] = 0x0b0b0b0bUL;
pxTopOfStack[ 8 ] = 0x0a0a0a0aUL;
pxTopOfStack[ 7 ] = 0x09090909UL;
pxTopOfStack[ 6 ] = 0x08080808UL;
pxTopOfStack[ 5 ] = 0x07070707UL;
pxTopOfStack[ 4 ] = 0x06060606UL;
pxTopOfStack[ 3 ] = 0x05050505UL;
pxTopOfStack[ 2 ] = 0x04040404UL;
pxTopOfStack[ 1 ] = 0x03030303UL;
pxTopOfStack[ 0 ] = ( uint32_t ) pvParameters;
/* Fill the registers with known values to assist debugging. */
pxTopOfStack[ 16 ] = 0;
pxTopOfStack[ 15 ] = portINITIAL_PSR;
pxTopOfStack[ 14 ] = ( uint32_t ) pxCode;
pxTopOfStack[ 13 ] = 0x00000000UL; /* R15. */
pxTopOfStack[ 12 ] = 0x00000000UL; /* R14. */
pxTopOfStack[ 11 ] = 0x0d0d0d0dUL;
pxTopOfStack[ 10 ] = 0x0c0c0c0cUL;
pxTopOfStack[ 9 ] = 0x0b0b0b0bUL;
pxTopOfStack[ 8 ] = 0x0a0a0a0aUL;
pxTopOfStack[ 7 ] = 0x09090909UL;
pxTopOfStack[ 6 ] = 0x08080808UL;
pxTopOfStack[ 5 ] = 0x07070707UL;
pxTopOfStack[ 4 ] = 0x06060606UL;
pxTopOfStack[ 3 ] = 0x05050505UL;
pxTopOfStack[ 2 ] = 0x04040404UL;
pxTopOfStack[ 1 ] = 0x03030303UL;
pxTopOfStack[ 0 ] = ( uint32_t ) pvParameters;
return pxTopOfStack;
return pxTopOfStack;
}
/*-----------------------------------------------------------*/
BaseType_t xPortStartScheduler( void )
{
/* Set-up the timer interrupt. */
prvSetupTimerInterrupt();
/* Set-up the timer interrupt. */
prvSetupTimerInterrupt();
/* Integrated Interrupt Controller: Enable all interrupts. */
ic->ien = 1;
/* Integrated Interrupt Controller: Enable all interrupts. */
ic->ien = 1;
/* Restore callee saved registers. */
portRESTORE_CONTEXT();
/* Restore callee saved registers. */
portRESTORE_CONTEXT();
/* Should not get here. */
return 0;
/* Should not get here. */
return 0;
}
/*-----------------------------------------------------------*/
static void prvSetupTimerInterrupt( void )
{
/* Enable timer interrupts */
counter1->reload = ( configCPU_CLOCK_HZ / configTICK_RATE_HZ ) - 1;
counter1->value = counter1->reload;
counter1->mask = 1;
/* Enable timer interrupts */
counter1->reload = ( configCPU_CLOCK_HZ / configTICK_RATE_HZ ) - 1;
counter1->value = counter1->reload;
counter1->mask = 1;
/* Set the IRQ Handler priority and enable it. */
irq[ IRQ_COUNTER1 ].ien = 1;
/* Set the IRQ Handler priority and enable it. */
irq[ IRQ_COUNTER1 ].ien = 1;
}
/*-----------------------------------------------------------*/
/* Trap 31 handler. */
void interrupt31_handler( void ) __attribute__((naked));
void interrupt31_handler( void ) __attribute__( ( naked ) );
void interrupt31_handler( void )
{
portSAVE_CONTEXT();
__asm volatile ( "call vTaskSwitchContext" );
portRESTORE_CONTEXT();
portSAVE_CONTEXT();
__asm volatile ( "call vTaskSwitchContext" );
portRESTORE_CONTEXT();
}
/*-----------------------------------------------------------*/
static void prvProcessTick( void ) __attribute__((noinline));
static void prvProcessTick( void ) __attribute__( ( noinline ) );
static void prvProcessTick( void )
{
if( xTaskIncrementTick() != pdFALSE )
{
vTaskSwitchContext();
}
/* Clear the Tick Interrupt. */
counter1->expired = 0;
if( xTaskIncrementTick() != pdFALSE )
{
vTaskSwitchContext();
}
/* Clear the Tick Interrupt. */
counter1->expired = 0;
}
/*-----------------------------------------------------------*/
/* Timer 1 interrupt handler, used for tick interrupt. */
void interrupt7_handler( void ) __attribute__((naked));
void interrupt7_handler( void ) __attribute__( ( naked ) );
void interrupt7_handler( void )
{
portSAVE_CONTEXT();
prvProcessTick();
portRESTORE_CONTEXT();
portSAVE_CONTEXT();
prvProcessTick();
portRESTORE_CONTEXT();
}
/*-----------------------------------------------------------*/
void vPortEndScheduler( void )
{
/* Nothing to do. Unlikely to want to end. */
/* Nothing to do. Unlikely to want to end. */
}
/*-----------------------------------------------------------*/