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251
portable/IAR/AVR32_UC3/port.c
View file

@ -27,6 +27,7 @@
*/
/*This file has been prepared for Doxygen automatic documentation generation.*/
/*! \file *********************************************************************
*
* \brief FreeRTOS port source for AVR32 UC3.
@ -82,20 +83,20 @@
#include "usart.h"
#endif
#if( configTICK_USE_TC==1 )
#if ( configTICK_USE_TC == 1 )
#include "tc.h"
#endif
/* Constants required to setup the task context. */
#define portINITIAL_SR ( ( StackType_t ) 0x00400000 ) /* AVR32 : [M2:M0]=001 I1M=0 I0M=0, GM=0 */
#define portINSTRUCTION_SIZE ( ( StackType_t ) 0 )
#define portINITIAL_SR ( ( StackType_t ) 0x00400000 ) /* AVR32 : [M2:M0]=001 I1M=0 I0M=0, GM=0 */
#define portINSTRUCTION_SIZE ( ( StackType_t ) 0 )
/* Each task maintains its own critical nesting variable. */
#define portNO_CRITICAL_NESTING ( ( uint32_t ) 0 )
#define portNO_CRITICAL_NESTING ( ( uint32_t ) 0 )
volatile uint32_t ulCriticalNesting = 9999UL;
#if( configTICK_USE_TC==0 )
#if ( configTICK_USE_TC == 0 )
static void prvScheduleNextTick( void );
#else
static void prvClearTcInt( void );
@ -110,11 +111,11 @@ static void prvSetupTimerInterrupt( void );
* Low-level initialization routine called during startup, before the main
* function.
*/
int __low_level_init(void)
int __low_level_init( void )
{
#if configHEAP_INIT
#pragma segment = "HEAP"
BaseType_t *pxMem;
#pragma segment = "HEAP"
BaseType_t * pxMem;
#endif
/* Enable exceptions. */
@ -144,21 +145,21 @@ int __low_level_init(void)
static const usart_options_t DBG_USART_OPTIONS =
{
.baudrate = configDBG_USART_BAUDRATE,
.charlength = 8,
.paritytype = USART_NO_PARITY,
.stopbits = USART_1_STOPBIT,
.baudrate = configDBG_USART_BAUDRATE,
.charlength = 8,
.paritytype = USART_NO_PARITY,
.stopbits = USART_1_STOPBIT,
.channelmode = USART_NORMAL_CHMODE
};
/* Initialize the USART used for the debug trace with the configured parameters. */
extern volatile avr32_usart_t *volatile stdio_usart_base;
extern volatile avr32_usart_t * volatile stdio_usart_base;
stdio_usart_base = configDBG_USART;
gpio_enable_module( DBG_USART_GPIO_MAP,
sizeof( DBG_USART_GPIO_MAP ) / sizeof( DBG_USART_GPIO_MAP[0] ) );
usart_init_rs232(configDBG_USART, &DBG_USART_OPTIONS, configCPU_CLOCK_HZ);
sizeof( DBG_USART_GPIO_MAP ) / sizeof( DBG_USART_GPIO_MAP[ 0 ] ) );
usart_init_rs232( configDBG_USART, &DBG_USART_OPTIONS, configCPU_CLOCK_HZ );
}
#endif
#endif /* if configDBG */
/* Request initialization of data segments. */
return 1;
@ -166,9 +167,10 @@ int __low_level_init(void)
/*-----------------------------------------------------------*/
/* Added as there is no such function in FreeRTOS. */
void *pvPortRealloc( void *pv, size_t xWantedSize )
void * pvPortRealloc( void * pv,
size_t xWantedSize )
{
void *pvReturn;
void * pvReturn;
vTaskSuspendAll();
{
@ -181,28 +183,30 @@ void *pvReturn;
/*-----------------------------------------------------------*/
/* The cooperative scheduler requires a normal IRQ service routine to
simply increment the system tick. */
* simply increment the system tick. */
/* The preemptive scheduler is defined as "naked" as the full context is saved
on entry as part of the context switch. */
#pragma shadow_registers = full // Naked.
* on entry as part of the context switch. */
#pragma shadow_registers = full /* Naked. */
static void vTick( void )
{
/* Save the context of the interrupted task. */
portSAVE_CONTEXT_OS_INT();
#if( configTICK_USE_TC==1 )
#if ( configTICK_USE_TC == 1 )
/* Clear the interrupt flag. */
prvClearTcInt();
#else
/* Schedule the COUNT&COMPARE match interrupt in (configCPU_CLOCK_HZ/configTICK_RATE_HZ)
clock cycles from now. */
* clock cycles from now. */
prvScheduleNextTick();
#endif
/* Because FreeRTOS is not supposed to run with nested interrupts, put all OS
calls in a critical section . */
* calls in a critical section . */
portENTER_CRITICAL();
xTaskIncrementTick();
xTaskIncrementTick();
portEXIT_CRITICAL();
/* Restore the context of the "elected task". */
@ -210,7 +214,7 @@ static void vTick( void )
}
/*-----------------------------------------------------------*/
#pragma shadow_registers = full // Naked.
#pragma shadow_registers = full /* Naked. */
void SCALLYield( void )
{
/* Save the context of the interrupted task. */
@ -221,18 +225,18 @@ void SCALLYield( void )
/*-----------------------------------------------------------*/
/* The code generated by the GCC compiler uses the stack in different ways at
different optimisation levels. The interrupt flags can therefore not always
be saved to the stack. Instead the critical section nesting level is stored
in a variable, which is then saved as part of the stack context. */
* different optimisation levels. The interrupt flags can therefore not always
* be saved to the stack. Instead the critical section nesting level is stored
* in a variable, which is then saved as part of the stack context. */
#pragma optimize = no_inline
void vPortEnterCritical( void )
{
/* Disable interrupts */
portDISABLE_INTERRUPTS();
/* Now interrupts are disabled ulCriticalNesting can be accessed
directly. Increment ulCriticalNesting to keep a count of how many times
portENTER_CRITICAL() has been called. */
/* Now that interrupts are disabled, ulCriticalNesting can be accessed
* directly. Increment ulCriticalNesting to keep a count of how many times
* portENTER_CRITICAL() has been called. */
ulCriticalNesting++;
}
/*-----------------------------------------------------------*/
@ -240,9 +244,10 @@ void vPortEnterCritical( void )
#pragma optimize = no_inline
void vPortExitCritical( void )
{
if(ulCriticalNesting > portNO_CRITICAL_NESTING)
if( ulCriticalNesting > portNO_CRITICAL_NESTING )
{
ulCriticalNesting--;
if( ulCriticalNesting == portNO_CRITICAL_NESTING )
{
/* Enable all interrupt/exception. */
@ -258,30 +263,32 @@ void vPortExitCritical( void )
*
* See header file for description.
*/
StackType_t *pxPortInitialiseStack( StackType_t *pxTopOfStack, TaskFunction_t pxCode, void *pvParameters )
StackType_t * pxPortInitialiseStack( StackType_t * pxTopOfStack,
TaskFunction_t pxCode,
void * pvParameters )
{
/* Setup the initial stack of the task. The stack is set exactly as
expected by the portRESTORE_CONTEXT() macro. */
* expected by the portRESTORE_CONTEXT() macro. */
/* When the task starts, it will expect to find the function parameter in R12. */
pxTopOfStack--;
*pxTopOfStack-- = ( StackType_t ) 0x08080808; /* R8 */
*pxTopOfStack-- = ( StackType_t ) 0x09090909; /* R9 */
*pxTopOfStack-- = ( StackType_t ) 0x0A0A0A0A; /* R10 */
*pxTopOfStack-- = ( StackType_t ) 0x0B0B0B0B; /* R11 */
*pxTopOfStack-- = ( StackType_t ) pvParameters; /* R12 */
*pxTopOfStack-- = ( StackType_t ) 0xDEADBEEF; /* R14/LR */
*pxTopOfStack-- = ( StackType_t ) 0x08080808; /* R8 */
*pxTopOfStack-- = ( StackType_t ) 0x09090909; /* R9 */
*pxTopOfStack-- = ( StackType_t ) 0x0A0A0A0A; /* R10 */
*pxTopOfStack-- = ( StackType_t ) 0x0B0B0B0B; /* R11 */
*pxTopOfStack-- = ( StackType_t ) pvParameters; /* R12 */
*pxTopOfStack-- = ( StackType_t ) 0xDEADBEEF; /* R14/LR */
*pxTopOfStack-- = ( StackType_t ) pxCode + portINSTRUCTION_SIZE; /* R15/PC */
*pxTopOfStack-- = ( StackType_t ) portINITIAL_SR; /* SR */
*pxTopOfStack-- = ( StackType_t ) 0xFF0000FF; /* R0 */
*pxTopOfStack-- = ( StackType_t ) 0x01010101; /* R1 */
*pxTopOfStack-- = ( StackType_t ) 0x02020202; /* R2 */
*pxTopOfStack-- = ( StackType_t ) 0x03030303; /* R3 */
*pxTopOfStack-- = ( StackType_t ) 0x04040404; /* R4 */
*pxTopOfStack-- = ( StackType_t ) 0x05050505; /* R5 */
*pxTopOfStack-- = ( StackType_t ) 0x06060606; /* R6 */
*pxTopOfStack-- = ( StackType_t ) 0x07070707; /* R7 */
*pxTopOfStack = ( StackType_t ) portNO_CRITICAL_NESTING; /* ulCriticalNesting */
*pxTopOfStack-- = ( StackType_t ) portINITIAL_SR; /* SR */
*pxTopOfStack-- = ( StackType_t ) 0xFF0000FF; /* R0 */
*pxTopOfStack-- = ( StackType_t ) 0x01010101; /* R1 */
*pxTopOfStack-- = ( StackType_t ) 0x02020202; /* R2 */
*pxTopOfStack-- = ( StackType_t ) 0x03030303; /* R3 */
*pxTopOfStack-- = ( StackType_t ) 0x04040404; /* R4 */
*pxTopOfStack-- = ( StackType_t ) 0x05050505; /* R5 */
*pxTopOfStack-- = ( StackType_t ) 0x06060606; /* R6 */
*pxTopOfStack-- = ( StackType_t ) 0x07070707; /* R7 */
*pxTopOfStack = ( StackType_t ) portNO_CRITICAL_NESTING; /* ulCriticalNesting */
return pxTopOfStack;
}
@ -290,7 +297,7 @@ StackType_t *pxPortInitialiseStack( StackType_t *pxTopOfStack, TaskFunction_t px
BaseType_t xPortStartScheduler( void )
{
/* Start the timer that generates the tick ISR. Interrupts are disabled
here already. */
* here already. */
prvSetupTimerInterrupt();
/* Start the first task. */
@ -304,132 +311,136 @@ BaseType_t xPortStartScheduler( void )
void vPortEndScheduler( void )
{
/* It is unlikely that the AVR32 port will require this function as there
is nothing to return to. */
* is nothing to return to. */
}
/*-----------------------------------------------------------*/
/* Schedule the COUNT&COMPARE match interrupt in (configCPU_CLOCK_HZ/configTICK_RATE_HZ)
clock cycles from now. */
#if( configTICK_USE_TC==0 )
static void prvScheduleFirstTick(void)
* clock cycles from now. */
#if ( configTICK_USE_TC == 0 )
static void prvScheduleFirstTick( void )
{
uint32_t lCycles;
lCycles = Get_system_register(AVR32_COUNT);
lCycles += (configCPU_CLOCK_HZ/configTICK_RATE_HZ);
// If lCycles ends up to be 0, make it 1 so that the COMPARE and exception
// generation feature does not get disabled.
if(0 == lCycles)
lCycles = Get_system_register( AVR32_COUNT );
lCycles += ( configCPU_CLOCK_HZ / configTICK_RATE_HZ );
/* If lCycles ends up to be 0, make it 1 so that the COMPARE and exception */
/* generation feature does not get disabled. */
if( 0 == lCycles )
{
lCycles++;
}
Set_system_register(AVR32_COMPARE, lCycles);
Set_system_register( AVR32_COMPARE, lCycles );
}
#pragma optimize = no_inline
static void prvScheduleNextTick(void)
static void prvScheduleNextTick( void )
{
uint32_t lCycles, lCount;
lCycles = Get_system_register(AVR32_COMPARE);
lCycles += (configCPU_CLOCK_HZ/configTICK_RATE_HZ);
// If lCycles ends up to be 0, make it 1 so that the COMPARE and exception
// generation feature does not get disabled.
if(0 == lCycles)
lCycles = Get_system_register( AVR32_COMPARE );
lCycles += ( configCPU_CLOCK_HZ / configTICK_RATE_HZ );
/* If lCycles ends up to be 0, make it 1 so that the COMPARE and exception */
/* generation feature does not get disabled. */
if( 0 == lCycles )
{
lCycles++;
}
lCount = Get_system_register(AVR32_COUNT);
lCount = Get_system_register( AVR32_COUNT );
if( lCycles < lCount )
{ // We missed a tick, recover for the next.
lCycles += (configCPU_CLOCK_HZ/configTICK_RATE_HZ);
{ /* We missed a tick, recover for the next. */
lCycles += ( configCPU_CLOCK_HZ / configTICK_RATE_HZ );
}
Set_system_register(AVR32_COMPARE, lCycles);
Set_system_register( AVR32_COMPARE, lCycles );
}
#else
#else /* if ( configTICK_USE_TC == 0 ) */
#pragma optimize = no_inline
static void prvClearTcInt(void)
static void prvClearTcInt( void )
{
AVR32_TC.channel[configTICK_TC_CHANNEL].sr;
AVR32_TC.channel[ configTICK_TC_CHANNEL ].sr;
}
#endif
#endif /* if ( configTICK_USE_TC == 0 ) */
/*-----------------------------------------------------------*/
/* Setup the timer to generate the tick interrupts. */
static void prvSetupTimerInterrupt(void)
static void prvSetupTimerInterrupt( void )
{
#if( configTICK_USE_TC==1 )
#if ( configTICK_USE_TC == 1 )
volatile avr32_tc_t * tc = &AVR32_TC;
volatile avr32_tc_t *tc = &AVR32_TC;
// Options for waveform genration.
/* Options for waveform genration. */
tc_waveform_opt_t waveform_opt =
{
.channel = configTICK_TC_CHANNEL, /* Channel selection. */
.channel = configTICK_TC_CHANNEL, /* Channel selection. */
.bswtrg = TC_EVT_EFFECT_NOOP, /* Software trigger effect on TIOB. */
.beevt = TC_EVT_EFFECT_NOOP, /* External event effect on TIOB. */
.bcpc = TC_EVT_EFFECT_NOOP, /* RC compare effect on TIOB. */
.bcpb = TC_EVT_EFFECT_NOOP, /* RB compare effect on TIOB. */
.bswtrg = TC_EVT_EFFECT_NOOP, /* Software trigger effect on TIOB. */
.beevt = TC_EVT_EFFECT_NOOP, /* External event effect on TIOB. */
.bcpc = TC_EVT_EFFECT_NOOP, /* RC compare effect on TIOB. */
.bcpb = TC_EVT_EFFECT_NOOP, /* RB compare effect on TIOB. */
.aswtrg = TC_EVT_EFFECT_NOOP, /* Software trigger effect on TIOA. */
.aeevt = TC_EVT_EFFECT_NOOP, /* External event effect on TIOA. */
.acpc = TC_EVT_EFFECT_NOOP, /* RC compare effect on TIOA: toggle. */
.acpa = TC_EVT_EFFECT_NOOP, /* RA compare effect on TIOA: toggle (other possibilities are none, set and clear). */
.aswtrg = TC_EVT_EFFECT_NOOP, /* Software trigger effect on TIOA. */
.aeevt = TC_EVT_EFFECT_NOOP, /* External event effect on TIOA. */
.acpc = TC_EVT_EFFECT_NOOP, /* RC compare effect on TIOA: toggle. */
.acpa = TC_EVT_EFFECT_NOOP, /* RA compare effect on TIOA: toggle (other possibilities are none, set and clear). */
.wavsel = TC_WAVEFORM_SEL_UP_MODE_RC_TRIGGER,/* Waveform selection: Up mode without automatic trigger on RC compare. */
.enetrg = FALSE, /* External event trigger enable. */
.eevt = 0, /* External event selection. */
.eevtedg = TC_SEL_NO_EDGE, /* External event edge selection. */
.cpcdis = FALSE, /* Counter disable when RC compare. */
.cpcstop = FALSE, /* Counter clock stopped with RC compare. */
.wavsel = TC_WAVEFORM_SEL_UP_MODE_RC_TRIGGER, /* Waveform selection: Up mode without automatic trigger on RC compare. */
.enetrg = FALSE, /* External event trigger enable. */
.eevt = 0, /* External event selection. */
.eevtedg = TC_SEL_NO_EDGE, /* External event edge selection. */
.cpcdis = FALSE, /* Counter disable when RC compare. */
.cpcstop = FALSE, /* Counter clock stopped with RC compare. */
.burst = FALSE, /* Burst signal selection. */
.clki = FALSE, /* Clock inversion. */
.tcclks = TC_CLOCK_SOURCE_TC2 /* Internal source clock 2. */
.burst = FALSE, /* Burst signal selection. */
.clki = FALSE, /* Clock inversion. */
.tcclks = TC_CLOCK_SOURCE_TC2 /* Internal source clock 2. */
};
tc_interrupt_t tc_interrupt =
{
.etrgs=0,
.ldrbs=0,
.ldras=0,
.cpcs =1,
.cpbs =0,
.cpas =0,
.lovrs=0,
.covfs=0,
.etrgs = 0,
.ldrbs = 0,
.ldras = 0,
.cpcs = 1,
.cpbs = 0,
.cpas = 0,
.lovrs = 0,
.covfs = 0,
};
#endif
#endif /* if ( configTICK_USE_TC == 1 ) */
/* Disable all interrupt/exception. */
portDISABLE_INTERRUPTS();
/* Register the compare interrupt handler to the interrupt controller and
enable the compare interrupt. */
* enable the compare interrupt. */
#if( configTICK_USE_TC==1 )
#if ( configTICK_USE_TC == 1 )
{
INTC_register_interrupt((__int_handler)&vTick, configTICK_TC_IRQ, INT0);
INTC_register_interrupt( ( __int_handler ) & vTick, configTICK_TC_IRQ, INT0 );
/* Initialize the timer/counter. */
tc_init_waveform(tc, &waveform_opt);
tc_init_waveform( tc, &waveform_opt );
/* Set the compare triggers.
Remember TC counter is 16-bits, so counting second is not possible!
That's why we configure it to count ms. */
tc_write_rc( tc, configTICK_TC_CHANNEL, ( configPBA_CLOCK_HZ / 4) / configTICK_RATE_HZ );
* Remember TC counter is 16-bits, so counting second is not possible!
* That's why we configure it to count ms. */
tc_write_rc( tc, configTICK_TC_CHANNEL, ( configPBA_CLOCK_HZ / 4 ) / configTICK_RATE_HZ );
tc_configure_interrupts( tc, configTICK_TC_CHANNEL, &tc_interrupt );
/* Start the timer/counter. */
tc_start(tc, configTICK_TC_CHANNEL);
tc_start( tc, configTICK_TC_CHANNEL );
}
#else
#else /* if ( configTICK_USE_TC == 1 ) */
{
INTC_register_interrupt((__int_handler)&vTick, AVR32_CORE_COMPARE_IRQ, INT0);
INTC_register_interrupt( ( __int_handler ) & vTick, AVR32_CORE_COMPARE_IRQ, INT0 );
prvScheduleFirstTick();
}
#endif
#endif /* if ( configTICK_USE_TC == 1 ) */
}

898
portable/IAR/AVR32_UC3/portmacro.h
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File diff suppressed because it is too large Load diff

68
portable/IAR/AVR32_UC3/read.c
View file

@ -27,20 +27,21 @@
*/
/*This file is prepared for Doxygen automatic documentation generation.*/
/*! \file *********************************************************************
*
* \brief System-specific implementation of the \ref __read function used by
the standard library.
*
* - Compiler: IAR EWAVR32
* - Supported devices: All AVR32 devices with a USART module can be used.
* - AppNote:
*
* \author Atmel Corporation (Now Microchip):
* https://www.microchip.com \n
* Support and FAQ: https://www.microchip.com/support/
*
******************************************************************************/
*
* \brief System-specific implementation of the \ref __read function used by
* the standard library.
*
* - Compiler: IAR EWAVR32
* - Supported devices: All AVR32 devices with a USART module can be used.
* - AppNote:
*
* \author Atmel Corporation (Now Microchip):
* https://www.microchip.com \n
* Support and FAQ: https://www.microchip.com/support/
*
******************************************************************************/
/*
* Copyright (c) 2007, Atmel Corporation All rights reserved.
@ -82,7 +83,7 @@ _STD_BEGIN
#pragma module_name = "?__read"
extern volatile avr32_usart_t *volatile stdio_usart_base;
extern volatile avr32_usart_t * volatile stdio_usart_base;
/*! \brief Reads a number of bytes, at most \a size, into the memory area
@ -95,28 +96,33 @@ extern volatile avr32_usart_t *volatile stdio_usart_base;
* \return The number of bytes read, \c 0 at the end of the file, or
* \c _LLIO_ERROR on failure.
*/
size_t __read(int handle, uint8_t *buffer, size_t size)
size_t __read( int handle,
uint8_t * buffer,
size_t size )
{
int nChars = 0;
int nChars = 0;
// This implementation only reads from stdin.
// For all other file handles, it returns failure.
if (handle != _LLIO_STDIN)
{
return _LLIO_ERROR;
}
/* This implementation only reads from stdin. */
/* For all other file handles, it returns failure. */
if( handle != _LLIO_STDIN )
{
return _LLIO_ERROR;
}
for (; size > 0; --size)
{
int c = usart_getchar(stdio_usart_base);
if (c < 0)
break;
for( ; size > 0; --size )
{
int c = usart_getchar( stdio_usart_base );
*buffer++ = c;
++nChars;
}
if( c < 0 )
{
break;
}
return nChars;
*buffer++ = c;
++nChars;
}
return nChars;
}

77
portable/IAR/AVR32_UC3/write.c
View file

@ -27,20 +27,21 @@
*/
/*This file is prepared for Doxygen automatic documentation generation.*/
/*! \file *********************************************************************
*
* \brief System-specific implementation of the \ref __write function used by
the standard library.
*
* - Compiler: IAR EWAVR32
* - Supported devices: All AVR32 devices with a USART module can be used.
* - AppNote:
*
* \author Atmel Corporation (Now Microchip):
* https://www.microchip.com \n
* Support and FAQ: https://www.microchip.com/support
*
******************************************************************************/
*
* \brief System-specific implementation of the \ref __write function used by
* the standard library.
*
* - Compiler: IAR EWAVR32
* - Supported devices: All AVR32 devices with a USART module can be used.
* - AppNote:
*
* \author Atmel Corporation (Now Microchip):
* https://www.microchip.com \n
* Support and FAQ: https://www.microchip.com/support
*
******************************************************************************/
/*
* Copyright (c) 2007, Atmel Corporation All rights reserved.
@ -82,8 +83,8 @@ _STD_BEGIN
#pragma module_name = "?__write"
//! Pointer to the base of the USART module instance to use for stdio.
__no_init volatile avr32_usart_t *volatile stdio_usart_base;
/*! Pointer to the base of the USART module instance to use for stdio. */
__no_init volatile avr32_usart_t * volatile stdio_usart_base;
/*! \brief Writes a number of bytes, at most \a size, from the memory area
@ -99,34 +100,36 @@ __no_init volatile avr32_usart_t *volatile stdio_usart_base;
*
* \return The number of bytes written, or \c _LLIO_ERROR on failure.
*/
size_t __write(int handle, const uint8_t *buffer, size_t size)
size_t __write( int handle,
const uint8_t * buffer,
size_t size )
{
size_t nChars = 0;
size_t nChars = 0;
if (buffer == 0)
{
// This means that we should flush internal buffers.
return 0;
}
// This implementation only writes to stdout and stderr.
// For all other file handles, it returns failure.
if (handle != _LLIO_STDOUT && handle != _LLIO_STDERR)
{
return _LLIO_ERROR;
}
for (; size != 0; --size)
{
if (usart_putchar(stdio_usart_base, *buffer++) < 0)
if( buffer == 0 )
{
return _LLIO_ERROR;
/* This means that we should flush internal buffers. */
return 0;
}
++nChars;
}
/* This implementation only writes to stdout and stderr. */
/* For all other file handles, it returns failure. */
if( ( handle != _LLIO_STDOUT ) && ( handle != _LLIO_STDERR ) )
{
return _LLIO_ERROR;
}
return nChars;
for( ; size != 0; --size )
{
if( usart_putchar( stdio_usart_base, *buffer++ ) < 0 )
{
return _LLIO_ERROR;
}
++nChars;
}
return nChars;
}