port.c File Reference

#include "FreeRTOS.h"
#include "task.h"

Include dependency graph for port.c:

Go to the source code of this file.

Macros
#define	portNVIC_SYSTICK_CTRL_REG   ( *( ( volatile uint32_t * ) 0xe000e010 ) )
#define	portNVIC_SYSTICK_LOAD_REG   ( *( ( volatile uint32_t * ) 0xe000e014 ) )
#define	portNVIC_SYSTICK_CURRENT_VALUE_REG   ( *( ( volatile uint32_t * ) 0xe000e018 ) )
#define	portNVIC_SHPR3_REG   ( *( ( volatile uint32_t * ) 0xe000ed20 ) )
#define	portNVIC_SYSTICK_CLK_BIT   ( 1UL << 2UL )
#define	portNVIC_SYSTICK_INT_BIT   ( 1UL << 1UL )
#define	portNVIC_SYSTICK_ENABLE_BIT   ( 1UL << 0UL )
#define	portNVIC_SYSTICK_COUNT_FLAG_BIT   ( 1UL << 16UL )
#define	portNVIC_PENDSVCLEAR_BIT   ( 1UL << 27UL )
#define	portNVIC_PEND_SYSTICK_SET_BIT   ( 1UL << 26UL )
#define	portNVIC_PEND_SYSTICK_CLEAR_BIT   ( 1UL << 25UL )
#define	portCPUID   ( *( ( volatile uint32_t * ) 0xE000ed00 ) )
#define	portCORTEX_M7_r0p1_ID   ( 0x410FC271UL )
#define	portCORTEX_M7_r0p0_ID   ( 0x410FC270UL )
#define	portMIN_INTERRUPT_PRIORITY   ( 255UL )
#define	portNVIC_PENDSV_PRI   ( ( ( uint32_t ) portMIN_INTERRUPT_PRIORITY ) << 16UL )
#define	portNVIC_SYSTICK_PRI   ( ( ( uint32_t ) portMIN_INTERRUPT_PRIORITY ) << 24UL )
#define	portFIRST_USER_INTERRUPT_NUMBER   ( 16 )
#define	portNVIC_IP_REGISTERS_OFFSET_16   ( 0xE000E3F0 )
#define	portAIRCR_REG   ( *( ( volatile uint32_t * ) 0xE000ED0C ) )
#define	portMAX_8_BIT_VALUE   ( ( uint8_t ) 0xff )
#define	portTOP_BIT_OF_BYTE   ( ( uint8_t ) 0x80 )
#define	portMAX_PRIGROUP_BITS   ( ( uint8_t ) 7 )
#define	portPRIORITY_GROUP_MASK   ( 0x07UL << 8UL )
#define	portPRIGROUP_SHIFT   ( 8UL )
#define	portVECTACTIVE_MASK   ( 0xFFUL )
#define	portFPCCR   ( ( volatile uint32_t * ) 0xe000ef34 ) /* Floating point context control register. */
#define	portASPEN_AND_LSPEN_BITS   ( 0x3UL << 30UL )
#define	portINITIAL_XPSR   ( 0x01000000 )
#define	portINITIAL_EXC_RETURN   ( 0xfffffffd )
#define	portMAX_24_BIT_NUMBER   ( 0xffffffUL )
#define	portSTART_ADDRESS_MASK   ( ( StackType_t ) 0xfffffffeUL )
#define	portMISSED_COUNTS_FACTOR   ( 94UL )
#define	configSYSTICK_CLOCK_HZ   ( configCPU_CLOCK_HZ )
#define	portNVIC_SYSTICK_CLK_BIT_CONFIG   ( portNVIC_SYSTICK_CLK_BIT )
#define	portTASK_RETURN_ADDRESS   prvTaskExitError

Functions
void	vPortSetupTimerInterrupt (void)
void	xPortPendSVHandler (void xPortSysTickHandler void)
static void	prvTaskExitError (void)
void	vPortSVCHandler (void)
static void	prvPortStartFirstTask (void)
BaseType_t	xPortStartScheduler (void)
void	vPortEndScheduler (void)
void	vPortEnterCritical (void)
void	vPortExitCritical (void)
void	xPortPendSVHandler (void)
void	xPortSysTickHandler (void)
	__attribute__ ((weak))
static void	vPortEnableVFP (void)

Macro Definition Documentation

configSYSTICK_CLOCK_HZ

#define configSYSTICK_CLOCK_HZ   ( configCPU_CLOCK_HZ )

Definition at line 102 of file port.c.

Referenced by __attribute__().

portAIRCR_REG

#define portAIRCR_REG   ( *( ( volatile uint32_t * ) 0xE000ED0C ) )

Definition at line 68 of file port.c.

portASPEN_AND_LSPEN_BITS

#define portASPEN_AND_LSPEN_BITS   ( 0x3UL << 30UL )

Definition at line 80 of file port.c.

Referenced by xPortStartScheduler().

portCORTEX_M7_r0p0_ID

#define portCORTEX_M7_r0p0_ID   ( 0x410FC270UL )

Definition at line 59 of file port.c.

Referenced by xPortStartScheduler().

portCORTEX_M7_r0p1_ID

#define portCORTEX_M7_r0p1_ID   ( 0x410FC271UL )

Definition at line 58 of file port.c.

Referenced by xPortStartScheduler().

portCPUID

#define portCPUID   ( *( ( volatile uint32_t * ) 0xE000ed00 ) )

Definition at line 57 of file port.c.

Referenced by xPortStartScheduler().

portFIRST_USER_INTERRUPT_NUMBER

#define portFIRST_USER_INTERRUPT_NUMBER   ( 16 )

Definition at line 66 of file port.c.

Referenced by xPortStartScheduler().

portFPCCR

#define portFPCCR   ( ( volatile uint32_t * ) 0xe000ef34 ) /* Floating point context control register. */

Definition at line 79 of file port.c.

Referenced by xPortStartScheduler().

portINITIAL_EXC_RETURN

#define portINITIAL_EXC_RETURN   ( 0xfffffffd )

Definition at line 84 of file port.c.

Referenced by xPortPendSVHandler().

portINITIAL_XPSR

#define portINITIAL_XPSR   ( 0x01000000 )

Definition at line 83 of file port.c.

Referenced by xPortPendSVHandler().

portMAX_24_BIT_NUMBER

#define portMAX_24_BIT_NUMBER   ( 0xffffffUL )

Definition at line 87 of file port.c.

Referenced by __attribute__().

portMAX_8_BIT_VALUE

#define portMAX_8_BIT_VALUE   ( ( uint8_t ) 0xff )

Definition at line 69 of file port.c.

Referenced by xPortStartScheduler().

portMAX_PRIGROUP_BITS

#define portMAX_PRIGROUP_BITS   ( ( uint8_t ) 7 )

Definition at line 71 of file port.c.

Referenced by xPortStartScheduler().

portMIN_INTERRUPT_PRIORITY

#define portMIN_INTERRUPT_PRIORITY   ( 255UL )

Definition at line 61 of file port.c.

portMISSED_COUNTS_FACTOR

#define portMISSED_COUNTS_FACTOR   ( 94UL )

Definition at line 96 of file port.c.

Referenced by __attribute__().

portNVIC_IP_REGISTERS_OFFSET_16

#define portNVIC_IP_REGISTERS_OFFSET_16   ( 0xE000E3F0 )

Definition at line 67 of file port.c.

Referenced by xPortPendSVHandler(), and xPortStartScheduler().

portNVIC_PEND_SYSTICK_CLEAR_BIT

#define portNVIC_PEND_SYSTICK_CLEAR_BIT   ( 1UL << 25UL )

Definition at line 53 of file port.c.

portNVIC_PEND_SYSTICK_SET_BIT

#define portNVIC_PEND_SYSTICK_SET_BIT   ( 1UL << 26UL )

Definition at line 52 of file port.c.

portNVIC_PENDSV_PRI

#define portNVIC_PENDSV_PRI   ( ( ( uint32_t ) portMIN_INTERRUPT_PRIORITY ) << 16UL )

Definition at line 62 of file port.c.

Referenced by xPortStartScheduler().

portNVIC_PENDSVCLEAR_BIT

#define portNVIC_PENDSVCLEAR_BIT   ( 1UL << 27UL )

Definition at line 51 of file port.c.

portNVIC_SHPR3_REG

#define portNVIC_SHPR3_REG   ( *( ( volatile uint32_t * ) 0xe000ed20 ) )

Definition at line 45 of file port.c.

Referenced by xPortStartScheduler().

portNVIC_SYSTICK_CLK_BIT

#define portNVIC_SYSTICK_CLK_BIT   ( 1UL << 2UL )

Definition at line 47 of file port.c.

portNVIC_SYSTICK_CLK_BIT_CONFIG

#define portNVIC_SYSTICK_CLK_BIT_CONFIG   ( portNVIC_SYSTICK_CLK_BIT )

Definition at line 104 of file port.c.

Referenced by __attribute__().

portNVIC_SYSTICK_COUNT_FLAG_BIT

#define portNVIC_SYSTICK_COUNT_FLAG_BIT   ( 1UL << 16UL )

Definition at line 50 of file port.c.

portNVIC_SYSTICK_CTRL_REG

#define portNVIC_SYSTICK_CTRL_REG   ( *( ( volatile uint32_t * ) 0xe000e010 ) )

Definition at line 42 of file port.c.

Referenced by __attribute__().

portNVIC_SYSTICK_CURRENT_VALUE_REG

#define portNVIC_SYSTICK_CURRENT_VALUE_REG   ( *( ( volatile uint32_t * ) 0xe000e018 ) )

Definition at line 44 of file port.c.

Referenced by __attribute__().

portNVIC_SYSTICK_ENABLE_BIT

#define portNVIC_SYSTICK_ENABLE_BIT   ( 1UL << 0UL )

Definition at line 49 of file port.c.

Referenced by __attribute__().

portNVIC_SYSTICK_INT_BIT

#define portNVIC_SYSTICK_INT_BIT   ( 1UL << 1UL )

Definition at line 48 of file port.c.

Referenced by __attribute__().

portNVIC_SYSTICK_LOAD_REG

#define portNVIC_SYSTICK_LOAD_REG   ( *( ( volatile uint32_t * ) 0xe000e014 ) )

Definition at line 43 of file port.c.

Referenced by __attribute__().

portNVIC_SYSTICK_PRI

#define portNVIC_SYSTICK_PRI   ( ( ( uint32_t ) portMIN_INTERRUPT_PRIORITY ) << 24UL )

Definition at line 63 of file port.c.

Referenced by xPortStartScheduler().

portPRIGROUP_SHIFT

#define portPRIGROUP_SHIFT   ( 8UL )

Definition at line 73 of file port.c.

Referenced by xPortStartScheduler().

portPRIORITY_GROUP_MASK

#define portPRIORITY_GROUP_MASK   ( 0x07UL << 8UL )

Definition at line 72 of file port.c.

Referenced by xPortStartScheduler().

portSTART_ADDRESS_MASK

#define portSTART_ADDRESS_MASK   ( ( StackType_t ) 0xfffffffeUL )

Definition at line 91 of file port.c.

Referenced by xPortPendSVHandler().

portTASK_RETURN_ADDRESS

#define portTASK_RETURN_ADDRESS   prvTaskExitError

Definition at line 116 of file port.c.

Referenced by xPortPendSVHandler().

portTOP_BIT_OF_BYTE

#define portTOP_BIT_OF_BYTE   ( ( uint8_t ) 0x80 )

Definition at line 70 of file port.c.

Referenced by xPortStartScheduler().

portVECTACTIVE_MASK

#define portVECTACTIVE_MASK   ( 0xFFUL )

Definition at line 76 of file port.c.

Referenced by vPortEnterCritical().

Function Documentation

__attribute__()

__attribute__

(

(weak)

)

Definition at line 762 of file port.c.

References configCPU_CLOCK_HZ, configSYSTICK_CLOCK_HZ, configTICK_RATE_HZ, portMAX_24_BIT_NUMBER, portMISSED_COUNTS_FACTOR, portNVIC_SYSTICK_CLK_BIT_CONFIG, portNVIC_SYSTICK_CTRL_REG, portNVIC_SYSTICK_CURRENT_VALUE_REG, portNVIC_SYSTICK_ENABLE_BIT, portNVIC_SYSTICK_INT_BIT, and portNVIC_SYSTICK_LOAD_REG.

prvPortStartFirstTask()

void prvPortStartFirstTask ( void )

static

Definition at line 270 of file port.c.

Referenced by xPortStartScheduler().

prvTaskExitError()

void prvTaskExitError ( void )

static

Definition at line 225 of file port.c.

References configASSERT, and portDISABLE_INTERRUPTS.

Referenced by xPortStartScheduler().

vPortEnableVFP()

void vPortEnableVFP ( void )

static

Definition at line 784 of file port.c.

Referenced by xPortStartScheduler().

vPortEndScheduler()

void vPortEndScheduler

(

void

)

Definition at line 423 of file port.c.

References configASSERT.

Referenced by vTaskEndScheduler().

vPortEnterCritical()

void vPortEnterCritical

(

void

)

Definition at line 431 of file port.c.

References configASSERT, portDISABLE_INTERRUPTS, portNVIC_INT_CTRL_REG, and portVECTACTIVE_MASK.

vPortExitCritical()

void vPortExitCritical

(

void

)

Definition at line 448 of file port.c.

References configASSERT, and portENABLE_INTERRUPTS.

vPortSetupTimerInterrupt()

void vPortSetupTimerInterrupt

(

void

)

Referenced by xPortStartScheduler().

vPortSVCHandler()

void vPortSVCHandler

(

void

)

Definition at line 251 of file port.c.

xPortPendSVHandler() [1/2]

void xPortPendSVHandler

(

void xPortSysTickHandler

void

)

Definition at line 129 of file port.c.

References portINITIAL_EXC_RETURN, portINITIAL_XPSR, portNVIC_IP_REGISTERS_OFFSET_16, portSTART_ADDRESS_MASK, and portTASK_RETURN_ADDRESS.

xPortPendSVHandler() [2/2]

void xPortPendSVHandler

(

void

)

Definition at line 460 of file port.c.

References configMAX_SYSCALL_INTERRUPT_PRIORITY.

xPortStartScheduler()

BaseType_t xPortStartScheduler

(

void

)

Definition at line 297 of file port.c.

References configASSERT, configMAX_SYSCALL_INTERRUPT_PRIORITY, portASPEN_AND_LSPEN_BITS, portCORTEX_M7_r0p0_ID, portCORTEX_M7_r0p1_ID, portCPUID, portFIRST_USER_INTERRUPT_NUMBER, portFPCCR, portMAX_8_BIT_VALUE, portMAX_PRIGROUP_BITS, portNVIC_IP_REGISTERS_OFFSET_16, portNVIC_PENDSV_PRI, portNVIC_SHPR3_REG, portNVIC_SYSTICK_PRI, portPRIGROUP_SHIFT, portPRIORITY_GROUP_MASK, portTOP_BIT_OF_BYTE, prvPortStartFirstTask(), prvTaskExitError(), vPortEnableVFP(), vPortSetupTimerInterrupt(), and vTaskSwitchContext().

Referenced by vTaskStartScheduler().

xPortSysTickHandler()

void xPortSysTickHandler

(

void

)

Definition at line 517 of file port.c.

References pdFALSE, portDISABLE_INTERRUPTS, portENABLE_INTERRUPTS, portNVIC_INT_CTRL_REG, portNVIC_PENDSVSET_BIT, and xTaskIncrementTick().